Thunderbolt 4 egpu bottleneck. Unfortunately, the M.
Thunderbolt 4 egpu bottleneck This is because from the i7-1065G7 and up they fixed this whereas 8th gen and below haven’t. 4 -Windows 10 home with bootcamp eGPU -EVG If it helps, 32Gbps PCIe 3. 0 ports have EGPU compatibility or not all of them? Should they have any other features that make them 100x100 compatible with external graphics? Otherwise, for an eGPU, it’s removed. 0 x4 M. . Additionally, the CPU’s capabilities can create a bottleneck, so pairing an eGPU with an adequately powerful CPU and sufficient RAM is important Thunderbolt eGPUs have a significant performance loss. That's a whopping 60% increase. 0 x4 over 40Gbps TB3 encoder (as found in TB3/TB4 enclosures like the Razer Core @gerald_nunn, just made an account to say thank you. 2. It is the same 40Gbit per port like TB3. This poster has some good writeups and suggests using the m. Assuming that Im either using an oculink or thunderbolt 4 as these are plans for the far future. 2 gen 2 for the "dock" portion of the EGPU; with the displays, usb ports, ethernet etc utilizing this connection AND while also In any case most of the TB bottleneck complains probably came from people who use MacOS and use the eGPU to render things in the main laptop screen. I'd imagine the CPU would be the bottleneck here. It suggests upwards of 22Gb (2. Get a laptop that supports that and an egpu that also supports it as well. Thunderbolt 4: Announced in 2020, Thunderbolt 4 maintains the 40 Gbps bandwidth of its predecessor but brings additional features and improved compatibility with a wider range of devices. 3. In both cases (TB4 or icelake), the PCH (the thing that controls the thunderbolt port) is built into the CPU, which is far FAR more efficient design at handling eGPU's than every other laptop on the market. I also read that there might be some bottleneck problem with some GPUs and I would like to avoid buying a GPU that is probably not going to be used efficiently by my computer. -a7Te1wwOfQ This YouTube video, titled "RTX 5090 eGPU Test: Zotac Zone (USB4) vs. Even at a 20% bottleneck from Thunderbolt 3, that'll still make an eGPU 20% faster than a laptop 4070. Note: This is with an older chipset, thunderbolt got slightly better since Ice-Lake. 0 x 4; 15-30% for PCI-E 3. 2 NVMe slot budget If you test egpu and gpu with CUDAz or PCie test with 3D MarK, thunderbolt runs at 2. 1 benchmarks through my Z590 test system just now. My hypothesis is that: A) The bottleneck can be CPU, GPU, or connection type depending on the specific combo, but CPU likely Oculink: Not plug in and play. 34 MiB/s Device to Host Pinned: 2544. This discussion talks about available Thunderbolt 4 bandwidth for data. I connect two eGPUs through the two onboard Thunderbolt 4 ports, RX 6800 XT and RTX 3090 Ti. 0 x4 is proving problematic with the more desirable Nvidia eGPUs based on recent 2023 GPD/ThinkBook Nvidia eGPU builds. 2 instead of Thunderbolt. 0 vs. 1080p high-refresh rate monitors have been mass-produced for a while, 1440p/1600p ones for the last few years, but 4k high-refresh rate monitors are still pretty expensive. Which resolution do you An egpu box is about $200 to $400 and that uses Thunderbolt 3 or 4. 0 x 4) and from your laptop's CPU which is likely a 6th, 7th, or 8th Gen mobile i5 or i7. 0 Thunderbolt: Host Pinned to Device: 2216. 12. 16RAM -Mac OS Sierra 10. 0 version of the R43SG 4. Keep in mind Intel caps Thunderbolt 3 bandwidth at 22Gbps. It is crucial to use a high-speed interface like Thunderbolt 3 or 4 for optimal performance. This will be connected to a VR headset. Ultrabooks with Thunderbolt 3 port/s are considered eGPU :) But ultimately, get something that works for you, there is a lot to look into, like thunderbolt 3 which is the fastest at the moment I believe. Loopback bottleneck: do you mean video from eGPU to iGPU? That means the Link cable has DisplayPort? In that case, the link cable should be connected to the GPU in the eGPU (requires a GPU with a USB-C port). Would a GPU in a Thunderbolt eGPU enclosure work with this laptop? 900 series will have some sort of bottleneck. 0 and now Oculink seems to be coming in a few as well. 2 NVMe slot budget Hi ı am here for asking question about a setup with external desktop gpu 4060 ti 16 GB (if happens to work) and a Asus vivobook 15 pro(6900hx amd ryzen 9 but lpddr5 Ram) Seemingly egpu videos consist 3080 and 3090 gpus but they have around a 900gb/s but 4060 ti has around 250gb/s so ı think ı should have less bottleneck of thunderbolt 4. Your 1260p is about the same wattage as mine but with double the threads, 4 gens of IPC improvement of course, the great improvements on Thunderbolt that have huge impact on eGPU behavior. This ensures that the data transfer rates are sufficient to take full advantage of the eGPU’s power. If you have an dGPU with the same brand as eGPU, it's best to disable it in Device Manager so that the Intel iGPU handles internal display. Thin and light laptops ayore often a top choice to pair with an external GPU. The laptop internal display is running activity monitor utility while the eGPU is powering the external monitor to play games. ) USB 4. 75 MiB/s Host Pageable to Device: 2150. Which graphics card has the lowest performance loss with Thunderbolt 4 eGPU schedule? I would like to install an eGPU (the bus interface of the dock is PCIE 3. i7-12700H; RTX 3060; OASIS (Water pump to cool internal CPU and GPU in laptop) 1x32 GB DDR5-4800; eGPU - EVGA RTX 3090 I ordered M. 2 NVMe slot budget @isaac_touche, The two Thunderbolt 3 ports (right side of your laptop) share one x4 PCIe 3. 0 x4 over 40Gbps USB4v1 encoder. Yes, IMMENSELY better. Despite that fact that it is the mobile variant of the RTX 3080; Asus developed a proprietary connector that combines USB 3. Unfortunately, the M. That becomes a variable $300 to The servere bottleneck reports were mostly from people trying to use the eGPU to render on the main laptop screen. My setup: XMG Neo E22. Thunderbolt 4 and 12th gen or newer CPUS make a big difference. 0 to the Surface Laptop Studio. So for a specific game engine and scene, you will see a limit to the max frames on an eGPU that isn't First sight of testing a 4090 in a thunderbolt 4 eGPU. 2 (PCIe 16 4. Emphasis on the number 4 The bandwidth on TB3 is probably too much of a constraint for use as a GPU connection. S5404VA which supports 8K monitors over Thunderbolt 4 @40Gbps. 2 installation; detection, BSOD & perf tweaks; Linux Xorg config with eGPU; Easy-to-use setup script; eGPU as primary display; Script for Wayland Desktops; macOS eGPU compatibility matrix; ≤10. What you want for your TB4 laptop is a TB3 enslosure! (@Mods - This question starts to get really annoying. I do this with all of my eGPU setups. Egpu I'm looking at possibly buying an ASUS Vivobook S14 OLED S5404VA which supports 8K monitors over Thunderbolt 4 @40Gbps. For high end cards the bottleneck will be more noticeable but maybe the 7600 isn’t enough 😂 Reply reply More replies More replies. 75GB/sec). Q: What do the eGPU port acronyms like 32Gbps-TB3 mean and what are their ranked & measured peak H2D/write bandwidths? Disclaimer & buying options for OCuLink eGPU adapters for reliable up to 64Gbps ePCIe 4. Thunderbolt 4 is only significantly different for Windows PCs, whose Thunderbolt 3 variations were often limited in features—where Apple always gave its users the full Thunderbolt 3 feature set. 2 because found a problem with FPS in gaming with TB4 eGPU Here is a source quote "OCulink offers up to 16 GB/s bandwidth, which is the same as that of PCIe Gen 3 x16 one-way. In the buyer's guide, any eGPU with "x2" in the TB3 ctrl 7 column has two Thunderbolt 3 controllers. The USB 4 These types of USB4 eGPU docks should have an Asmedia ASM2464PD controller to properly support full 40Gb/sec USB4 with a PCIe 4. The actual bottleneck will vary depending on the game, as many games are not really CPU-bound, but for games that have heavy CPU loading (especially games with intricate and complex AI, such as 4X or Grand Strategy games, or simulation that has a lot of AI activity, or high-end shooters) RE: Intel Thunderbolt 5 (TB5) specs released inc USB4v2 - 64Gbps PCIe 4. 2 slot Here's an example of one that's falsely advertised as PCIe 4. So bearing both the CPU (i7-1065G7) and Thunderbolt 3 port (4 lanes of PCI express) in mind, I'm guessing that the more powerful the card, the higher the bottleneck? If so, maybe it'd be better to use a lower-end card, like my current 970 as the bottleneck won't impact it as severely - As we’ve gained a better understanding of Thunderbolt 3 external GPU for laptops, the unknown rests on the performance of the host computer. Since we know that the major bottleneck for using eGPU is the bandwidth of thunderbolt 3/4, can anyone advice what kind of in game graphics setting can maximize the graphics performance In this video, I demonstrate how to build a Thunderbolt 4 eGPU dock using the EXP GDC TH3P4GAN GPU Dock and a 3D-printed case that is compatible with USB4 an Also, there is not yet a single Thunderbolt 4 egpu enclosure because, as I understand it, offer no benefit for that use case. Which GPU does bottleneck occur at? (ie 4090 vs 4080 no difference due to bottleneck). 0×16) for my Dell Latitude laptop with i7-1270P. Put a faster card in an eGPU, it will perform better than a slower card, but The USB 4 standard is a huge mess though. Device Thunderbolt controller decodes the data received over the cable. 2 NVMe slot budget This is most visible in games - there is a clear CPU bottleneck and sub-standard performance. My eGpu stuff is really to have a setup at my parents house who I am spending more time with as the need care, and having a thin and light I was reading that 3080 and 3070 are getting severe bottleneck over TB3. The ADT-Link R43SG-TB3 was the first readily available and affordable Thunderbolt 3 external graphics enclosure, followed more recently by the Wikingoo eGPU. There's others that First Thunderbolt 4 build – 2020 15″ HP Spectre X360 [11th,4C,G] + RTX 2080 Ti @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 Does TB3 bandwidth eventually become a bottleneck despite the dual controllers I am waiting for the thunderbot 4 enclosures to see if the eGPU is a good option for only have a laptop/ultrabook for everything. The best GPU you can get for a tb enclosure is either the 3090 or 6900 XT. If you have questions on what dock to buy or how much worse TB3 will be, I do not have an answer for you. Rephrase your question. Forza 5 even at 720p and lowest details was unplayable (low FPS and constant stuttering), Shadow of the Tomb Raider had low FPS in the hidden city and the Witcher 3 had a boost of 64Gbps PCIe 4. 0 x 4, 4. How badly would that bottleneck a RX 6950 XT. However, I am really concerned about the performance loss of the GPU when I install it in the eGPU dock. 77. I imagine testing at 1080p would show this bottleneck, like comparing 1080p Max settings/200% resolution vs lower settings /higher FPS to see where the bottle neck starts The more FPS, the more info that has to be sent out by the CPU to the eGPU for processing via the Thunderbolt 3 connection. 0: Amazon. Disclaimer & buying options for OCuLink eGPU adapters for reliable up to 64Gbps ePCIe 4. And this was in a Dell tablet. 0 x 8, I'd definitely buy a XG Mobile like today. eGPU accelerated internal LCD; mPCIe/EC/M. 0 x4 over 80Gbps bi-directional link with 120Gbps Bandwidth Boost // Intel demos TB5 laptop prototype, TB5 "Barlow Ridge" expected to be available starting in 2024 So i thought about an eGPU. Thunderbolt is a bottleneck. I game with a 3080 in a TB3 enclosure, outputting to external monitor and VR headset. 512GB SSD. If i got a laptop with a beefy CPU that won't bottleneck the gpu too much and a RTX 3080 in a Razer Core X how much I'm planning to get a Huawei Matebook X Pro 2018, however, it seems that it's Thunderbolt 3 connection is only 2 lane instead of 4. Hey everyone, first post here, but I have been following EGPUs for quite a while. 2 and Thunderbolt 5 are supposed to give us the best of both worlds, but they are 64Gbps PCIe 4. macOS ≥10. New comments cannot be posted and votes cannot be cast. Doing a little research, I found out that one of the most significant downsides to using an eGPU are the performance limitations that stem from both PCIe x4 (not x8 or x16 apparently) bandwidth capacity and overhead from Thunderbolt 3/4 itself. DIY Portable Custom Water Cooled Thunderbolt 3 eGPU OSMETA GK01 OCuLink eGPU Review and Installation Guide Thunderbolt 4 Docks, eGPU Daisy Chaining Xorg config with eGPU; Easy-to-use setup script; eGPU as primary display; Script for Wayland Desktops; macOS eGPU compatibility matrix; ≤10. Thunderbolt is the main issue here. 64Gbps PCIe 4. 35 2018 15" HP ZBook Studio G5 (Q P1000) [8th,6C,E] + RX 6700 XT @ 32Gbps-M. Each port can use full 4 lanes. So I was wondering if there's a way to estimate the bottleneck that will be on the 4090 egpu Archived post. 06kg triple-M. That said, it is still a better time than ever for egpus given they have become more accessible along with Monitors are becoming the biggest bottleneck imo. The laptop is connected to the breakaway by the included thunderbolt cable, and then a hdmi into the monitor from the back of the breakaway box. Of course RE: Intel Thunderbolt 5 (TB5) specs released inc USB4v2 - 64Gbps PCIe 4. My main PC is a 5800x3d + FE 4090 and a 42" LG C2 monitor + 2 other monitors). Communicating both ways through a single cable will probably bottleneck. TB4 certification is something that may make sense for laptops but not for eGPU enclosures so it is unlikely we'll ever see such a product. People say TB4 and TB3 have same performance but that’s BS. The optimal GPU depends on the resolution Yes but make sure you get a thunderbolt 4 egpu dock/enclosure. Then throw on a decent GPU which is $100 to $2000 for since its a retail price item. 0 eGPU from Aliexpress. If it was 4. But from what I read on this amazing reddit, and also on egpu. 4. 0 x 4 already has a bottleneck, and thunderbolt could bottleneck up to 28% further in some of the NLP models that were tested. But I still wound’t recommend Thunderbolt connected GPUs. It is a more eGPU performant and future-proof eGPU adapter option than older 2015-2018 Intel DSL/JHL 32Gbps PCIe 3. 0 at 25. I already gave up on using our eGPU (Vega56) with my Linux notebook because of the poor performance in newer games. Thunderbolt 4 Docks, eGPU Daisy Chaining and the One-Cable Dream Windows 10/11 Solutions for eGPU BSOD, Crashing, System Freezing and Stuttering Adding Advanced Power Management Options to Windows Laptops for Performance, Thermal Throttling & Power Management Egpu has a significant performance hit. 0 type C ports that are fitted, for example, on the new Lenovo Legion Go, the Ayaneo Slide, and the latest batch of Hanheld PCs in general. The extra pcie lanes kick a** 1440p is the sweet spot for EGPU’s. Hi, I have a Spectre 360 with 11th gen i7 CPU (2. 0 x 4 lanes) provides greater bandwith, I would aim for a Thunderbolt connection. Looking at a Jarrod's Tech video I came across an issue with some laptops managing the Thunderbolt 4 - eGPU connection via a dedicated chip or through the CPU (after reading some comments that was my understanding), the latter being apparently extremely slow. 2 PCI-E 3. BLUF: Thunderbolt throughput is NOT the bottleneck for eGPUs. @papoose02, Yea that's a nice mod they did to their eGpu box and squashed in that 4090. The main difference is that they upped the minimum requirements to get the certification meaning that every TB4 compatible computer must Thunderbolt egpus don't have a bottleneck, they have an overhead. It's higher than the typical limit of 2,800 MB/s in most Thunderbolt 3 eGPU enclosures. That’s why TB 4 is not a successor to TB 3. 2 NVMe slot budget What are current Win 11 handhelds that can run an eGPU with Thunderbolt 4 support, considering one does not care for the 30-40% performance drop? Most seem to support USB 4. And the caps aren’t exaggerated. all press releases on it state its 3. 0 x4 connectivity is here This being their first Thunderbolt 3/4 eGPU adapter - the EXP GDC TH3P4 Thunderbolt GPU Dock. So doesn't really answer my question. 2x4 ( ADT-Link R43SG ) + Win10 22H2 // compares M. Now there is a third option. I have an RTX 3060 single fan from Asus. There will be a significant bottleneck (probably >50% at 1440p, given how bottlenecked the 3080, 3080 ti, 3090, and 3090ti are) from both thunderbolt (or m. You should consider m. AYANEO 3 (OCuLINK) at 4K" by ETA Prime, tests the performance of the NVIDIA GeForce RTX 5090 eGPU with two handheld gaming PCs, the Zotac Zone and AYANEO 3, in 4K gaming. Though Thunderbolt 3 I'm running a 4060 ti on Thunderbolt 3, and Task Manager says that it does get up to 100% load, but I don't daisy chain it, and the monitors are plugged directly into the GPU ports. Note: This is with Pascal GPUs, Ampere is probably going to be even worse given the higher performance standards. I ran Blender 3. 5 GiB/s and PCIE 4. 4 -Windows 10 home with bootcamp eGPU -EVG Hi all, I'm looking at switching from my dGPU laptop (HP Omen 15, 2020 - 4800H / 1660 Ti, running Windows) to an ultrabook x eGPU setup. 2x4 (SGW-ZONE X-Pro OCuLink) + Win11 // world's first DIY OCuLink port modded Ally X & modular, upgradeable eGPU dock 外付けGPU（eGPU）を選ぶ際に、「Thunderbolt 3と4のどちらが必要か？」と迷う方も多いかもしれません。しかし、結論から言うと 、性能面ではThunderbolt 3で 64Gbps PCIe 4. Elden Ring shouldn't push a relatively recent CPU at all, even if As you can see, hardware-wise the Mobile 3080 variants are actually much closer to the Desktop 3070 than the Desktop 3080. 0 x4 over 80Gbps bi-directional link with 120Gbps Bandwidth Boost // Intel demos TB5 laptop prototype, TB5 "Barlow Ridge" expected to be available starting in 2024 Im planning on buying the AMD Ryzen 7 7840HS version of the FW16. DOOM 2016 with its performance metrics provides a good way to illustrate this; with the eGPU disconnected I see CPU performance in the realm of 8-16ms (with variation but enough to deliver 60FPS) but with the enclosure connected this value is pegged Good morning, I have a question about the USB 4. Hi all, I am preparing to put together a portable eGPU gaming & workstation rig for under $1000 in the coming months. 0 connection. The host computer has a Radeon RX 6900 XT dGPU. 0 is determined by chipset. As a bonus FYI, I connected the Razer Core X Chroma eGPU to my Razer Thunderbolt 4 I am also ignoring the internal monitor case - I would only ever use an eGPU with an external monitor. For the ease of use, although knowing that Oculink via M. I had initially planned on connecting the PCIe 4. I'm not 100% sure it isn't the bottleneck, but maybe 99%. Outside of buying a second hand mainstream eGPU, low cost third-party options for the Thunderbolt 3 interface have been relatively limited. 4060 ti gets 70 ish fps in Intel Thunderbolt controllers (integrated or discrete) have two ports per Thunderbolt bus where each Thunderbolt bus has up to two DisplayPort connections. There are also different There is no benefit in using Thunderbolt 4 egpu wise. 1080 is about 3060 performance nowadays. In tests, even eGPU's running off mid-range 4-core CPU's on TB4 performed a lot better than higher end 6-8 core laptops. Better performance (5-8% hit for PCI-E 4. Even my Oculink setup still has bandwidth issues, so that would Jarrod’s Tech put together an interesting experiment that aims to test the limits of a Thunderbolt 4 laptop connector with an external GPU setup featuring Nvidia’s RTX 4090 FE card. 400 and the most recent NVIDIA drivers through the experience software. To be more precise the Razer Core X. For M1 and M2, each Thunderbolt port belongs to a separate Thunderbolt bus with two DisplayPort connections. 6: eGPU Setup Guide; eGPU-Accelerated Internal Display; eGPU Troubleshooting Guide; Launching apps on specific eGPUs; Software . 8 GHz x 8cores) with 2 thunderbol 4 ports. Oculink or NVME M2 and other solutions are much faster than Thunderbolt. Thunderbolt 4 is limited to 40 Gb/s, whereas OCuLink enables a bandwidth of up to 64 Gb/s. I have never attempted an egpu setup before. First, you’re gonna get past the not-integrated TB controller bottleneck, which is an additional 15% on the already limiting other penalties the GPU gets on eGPUs. It is less of a bottleneck when using a screen directly connected to the egpu as it doesn't send the data for the screen back through the wire. 0 x 8. Concerning Performance A 2Ghz Dual-Core is a seriously slow processor by modern standards. 2 gen 4 if you want better performance from your 4090. At the time of this review the total cost including delivery was US$126 making it the lowest cost Thunderbolt eGPU available. A laptop with eGPU enclosure is subject to CPU and Thunderbolt bottlenecks, so just how much performance is lost when compared to using the same graphics car 1a. And if the CPU is not strong enough will framework plan on selling stronger CPU’s? A gpu cannot alleviate bottleneck. Here are the key takeaways from the video:Testing with Two Handhelds: The . System -2016 13" Macbook Pro with Touchbar. @stijn, will concur with @boltoway's comments suggesting having a look at the 2023 ASM2464PD 64Gbps PCIe 4. Investing in TB4 over TB3 will give you more performance but your better of staying within the bandwidth limit of your Thunderbolt connection by just getting a card that can output that at full. 0 4x slot. 37 MiB/s The JHL7440 Thunderbolt 3 controller in this WD-Black D50 Game Dock provides up to 3,000 MB/s throughput [discussion link]. 0 x4 connectivity is here 2024 7" ASUS ROG Ally X ( 780M ) [R7K,8C,U] + RTX 4060 MXM @ 64Gbps-M. This means that speed is halved to 20GB/s I am planning to use an eGPU hosting an RTX 2060. Its a niche and you will surely run into bugs and weird quirks. 0 x4 over 80Gbps Intel Thunderbolt 5 / USB4v2 ETA starting 2024 • eGPU Bandwidth Reference • eGPU Setup 1. com: Mini eGPU Enclosure Compatible with Thunderbolt 3/4,External GPU Dock Station,USB4 40Gbps Graphics Card Dock Conversion Adapter The reason is there is a small inherent latency to thunderbolt protocol going through the thunderbolt chip on you eGPU and laptop. This is a hard reservation with TB4. io and some other places my understanding is, with an eGPU : The CPU sends instructions to the eGPU (via thunderbolt) Host Thunderbolt controller encodes the data to be sent over the Thunderbolt cable to the eGPU. So I was wondering if this is the end of the road for eGPU gaming wise. Bought a NUC Right now from what I understand, the rear two USB-C ports are fully featured USB4 that should be equivalent in functionality to TB4. Compare this with the 5 GB/s bandwidth of Thunderbolt 4 and 10-15 GB/s of Thunderbolt 5, and you can immediately see the Thunderbolt 3: Launched in 2015, Thunderbolt 3 significantly increased the bandwidth to 40 Gbps, while also introducing support for USB-C connectors. You'll probably always have a 5-15% performance loss on an eGPU but also remember using I am running a 24 inch external asus monitor. 0 GiB/s so thunderbolt 3 or 4 is 10 times slower than motherboard PCIe 4. Do all USB 4. Looking at some other builds like Badea Cosmin Gabriel's Yoga Slim 7 x 3070 & VR_Nima's GPD Win 4 x 6900 XT setups gives me a lot of hope that this will be something that's possible without too major of a detriment to Thunderbolt 4 EGPU questions . 2 NVMe is at this moment, which your system is capable of, being the most stable/performant ePCIe eGPU mobile interface with good eGPU adapter (ADT-Link K43SG) support for it. 3GHZ core i7. So theoretically at least, you should get more performance over an One of the most significant factors affecting eGPU performance is bandwidth, primarily attributed to the connection type—typically Thunderbolt 3. 13 eGPU compatibility matrix; kryptonite; automate-eGPU EFI Happy New Year everyone! I was trying to search but was not able to find an answer. Reducing bottlenecks: - Look for thunderbolt 3+ (whatever is current) support on the eGPU as well as the laptop. Thunderbolt and cpu will severely bottleneck the graphics card. Some performance on eGPU ports. Question about CPU Bottleneck As someone who owns the Rog Flow 2022 and the XG Mobile RTX 3080; the XG Mobile is an AMAZING feat of engineering. 2 NVMe vs TB3 & RX 6700 XT vs RTX 3070 eGPU, 2. I have installed the newest version of Thunderbolt 17. 1) how much would the performance loss be in this case compared to a 1080 ti directly on the motherboard? from what I learned by contacting some eGPU manufacturers it's not 1/4 because thunderbolt 3 has 4 PCIe lanes and motherboard has 16 because today's graphics cards do not use all the bandwidth of the 16 lanes. and have waited for Intel 11th gen just so I can get thunderbolt 4, because the performance hit of thunderbolt 3 was enough for me to reconsider whether I really want to go through with this. I want to add an eGPU so that I can use the speed up version of some data analysis packages (). Will I experience a 2 lane thunderbolt 3 bottleneck? Thanks, Flave If I was using a 4K monitor it would DEFINITELY be bottlenecking much more but otherwise you should be fine. Note: M. "Latency" or over generalized overhead from being a non-integrated connection likely is. 6: eGPU Setup Guide; eGPU-Accelerated Internal Display; eGPU Troubleshooting Guide Just to add to the eGPU scaling discussion. So, the bottleneck is an external thunderbolt controller for 12xxxHX / 13xxxHX Currently, I have TH3P4G3 Thunderbolt-compatible GPU Video Card Dock and waiting for R43SG 4. This article serves as the laptop buying guide for choosing the best laptop for eGPU. I wanna see 4070 eGPU benchmarks The thunderbolt protocol is 100% the same under the TB3 certification and the TB4 certification. The Mobile 3080 uses the exact same GPU die as the Desktop 3070, but with 2 more SMs enabled (for a total of 48 vs 46). You really want that Thunderbolt 3/4/5 certification, because USB 4 doesn't have to include PCI tunneling, so the cheaper manufacturers will probably skimp on it. Possible that pcie wifi 6 card is bottlenecking eGPU performance? Gaming through Thunderbolt 3 connection can be bad if the host computer is not optimized and no external monitor is connected to the eGPU. We are not talking just bandwidth but also I am considering an eGPU setup with this kind of dock and the upcoming RTX 50-series. The bottleneck does not matter for displays because you as human don't notice a sub ms delay and Displayport needs less bandwidth than a gpu The desktop 4070 is around 50% faster than the laptop 4070. qchlfeqcbimfjooatdouxkstzmxjzafwtekwxeycicmhnbyxdzsgfyscvmpfagklzmhxpyy