DIY eGPU experiences

Discussion in 'e-GPU (External Graphics) Discussion' started by master blaster, Sep 18, 2009.

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  1. ffejeff224

    ffejeff224 Newbie

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    You say that my current GPU isn't x1.Opt capable but I am not sure why that matters if I am going to be disabling it in the Setup 1.x. Honestly Most of the time I keep my laptop at my desk anyway so I wouldn't even need to use the internal GPU at all. So even if I got an optimization compatible card like the GTX 560ti I wouldn't be able to run a x2.opt setup? Please explain. Also I want to make sure I understand correctly. To do the x2 setup I would have to get a PM3N and hijack the WLAN slot? Or is this possible though just the express card slot.

    Sorry if my questions seem simplistic but I am new to this and am trying to understand.

    Thanks for your help.
     
  2. kizwan

    kizwan Lord Pringles

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    Optimus compression technology only available if your notebook have Intel GMA 4500MHD or Intel HD Graphics or Intel HD 3000 iGPU. Combination with any of these iGPU & Nvidia Fermi graphic card, you can do x1.Opt setup (Opt = Optimus compression). However, your notebook only have NVIDIA NVS 160m dGPU, so you can't do x1.Opt setup (this is what nando means by "isn't x1.Opt capable"). Your eGPU will only running at PCIe x1 link with whatever graphic card you choose. With only x1 link, you will experience lagging & stuttering when playing games.

    If your notebook support x2 link setup, you will be able to get batter performance. So, need to confirm whether your notebook does support x2 link or not. Please refer to Pre-Purchase FAQ >> "6. (Performance) Can my system do a PE4H x2 or x4 link as shown in PCIe Scaling Analysis?".
     
  3. LoneNF

    LoneNF Notebook Consultant

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    You should carefully read the first post:
    "If the system has a dGPU then ensure it's switchable with the Intel 4500MHD/HD/HD3000/HD4000 providing primary video if you want to do a higher performance Optimus x1.Opt setup with allows accelerated graphics to the internal LCD as well as an external LCD."

    Soooo, if your laptop has ONLY the dedicated NVIDIA NVS 160m GPU, and no 4500MHD/HD/HD3000/HD4000, switchable with it, than you won`t have Optimus. And this is the case, because the Intel Core 2 Duo don`t have a built in graphic adapter.
     
  4. ffejeff224

    ffejeff224 Newbie

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    So I am starting to see that for my system the eGPU is impractical without Optimus. At the very least I would have to do a x2 setup which would require me to alter my E6400 to gain access to another port. Maybe I'll just hold out until I convince work to buy me a desktop :). Thanks for the replies everyone.
     
  5. chimmeister

    chimmeister Newbie

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    Hello. I have been reading a bit about eGPU's but I'm not very computer-savvy so I really don't know what to say to ask for help (in reference to system specs). I have an MSI GX620 laptop with Vista (is this even possible with Vista?). I was also wondering if an external monitor is necessary. Thanks for any help!
     
  6. Racer1

    Racer1 Notebook Consultant

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    Hi. Which performance I can get with a PCI Express 1.0 1x link? The port is empty on my 8735G. Is there a better performance in games too like BF3 if the CPU is the bottleneck. My T9600 is the most time at 100%.
     
  7. xxlukexx

    xxlukexx Notebook Enthusiast

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  8. darkcond0

    darkcond0 Notebook Evangelist

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    My friend is willing to sell me a GTX 460 for a pretty good price. My question is, how important is it to get the 256-bit version over the 192-bit one for the eGPU?
     
  9. timohour

    timohour Notebook Consultant

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    [​IMG]
    ATI vs Nvidia
    Virtu vs Optimus

    ATI or NVidia?
    Well a week before I got a very good deal on a GTX460 and this was what made to swap boats. I have been using a HD5850 Extreme for a while and since internal screen mode with Virtu was a pain (*) I decided to go with Nvidia. This little writeup is aimed to compare two GPUs that when compared on a Desktop they perform similar and can be both purchased used nowadays for less than $100 with performance comparable with other cards that would cost over $200.

    The cards
    ATI Sapphire Radeon HD5850 Extreme

    [​IMG]

    Specifications:
    • Graphics processor: AMD Radeon HD 5850, Cypress
    • Pipeline: 1,440 stream processors (@ 725MHz)
    • Memory: 1GB GDDR5, @ 4GHz effective
    • Bandwidth: 128GB/sec, 256-bit interface
    • Compatibility: DirectX 11, OpenGL 4.1
    • Outputs/Inputs: DVI, HDMI, DisplayPort,
    • Size: 215mm long, dual-slot
    • OC: @820/1050

    NVidia Palit GTX460 Sonic OC

    [​IMG]

    Specifications:
    • Graphics processor: NVidia GTX 460, GF104
    • Pipeline: 336 cuda cores (@700MHz),
    • Memory: 1GB GDDR5, @ 3.6GHz effective
    • Bandwidth: 128GB/sec, 256-bit interface
    • Compatibility: DirectX 11, OpenGL 4.1
    • Outputs/Inputs: 2xDVI, HDMI, VGA,
    • Size: 200mm long, dual-slot
    • OC: @820/920

    Both cards have similar clocks with the HD5850 clocking very little higher.
    Here you can find a small comparison of those cards tested @ x16 2.0 on a desktop motherboard: 3DMark06, 3DMark Vantage and 3DMark11. Don't be impressed that my results @ x1 2.0 are better than @x16.

    Testing rig.
    Once again my testing rig will be my HP Probook 4530s.

    • CPU: i7-2630QM 2.0GHz-2.9GHz (4C/8T)
    • MEM: 8GB 1333MHz (2x4GB)
    • iGPU: Intel HD3000
    • SCREEN: LED 1920x1080 matte finish display
    • HDD: 320GB 7200rpm

    Benchmarking implementations @ x1 1.0 & x1 2.0
    Following table show the results on both Internal & External Screen for both HD5850 and GTX460, setting it at generation 1 or 2 speed from the bios. For Internal Screen tests VIrtu Driver was used for the HD5850 (along with Catalyst 11.4) while for the GTX460 Optimus Internal Screen mode was used along with 295.53 Beta. (296.10 WHQL which were the only available by the time this writeup started didn't offer Optimus Internal screen mode). Intel HD3000 results will be added just for reference.

    </tr >
    Screen
    RAM
    GPU
    Direct X 9
    Direct X 10
    Direct X 11
    Ports
    3D06​
    RE5​
    3DVG​
    DMC4​
    3D11​
    HEAV​
    External
    8GB​
    HD5850/GTX460
    x1 2.0
    EC H65​
    HD5850/GTX460
    x1 1.0​
    696/830
    EC H65​
    Internal
    HD5850/GTX460
    x1 2.0
    59.4 52 .
    EC H65​
    HD5850/GTX460
    x1 1.0​
    423/830
    EC H65​
    HD3000​
    4139​
    30.1
    1318​



    .= All GTX460 x1 2.0 benchmarks were rerun @ default clocks for reference



    Laptop specs : i7-2630QM | Intel HD3000 | 8GB 1333MHz | 15' 1080p

    GPU specs : Sapphire HD5850 Exteme 1GB GDDR5 | Palit GTX 460 1GB GDDR5

    eGPU : PE3A-R x1 2.0


    Conclusion
    The results speak for themselves... Except for some 3DMark Vantage tests (@x1 2.0) GTX460 rules with sometimes twice as much FPS as the HD5850. The reason for that could be that or more likely it is the so called Optimus Compression. The compression saws its true power especially with Internal Screen Gaming. Also almost every Fermi card now is compatible with OS X Lion, so unless you are working with 4 external screens simultaneously you won't need a AMD card but you should rather grab a used GTX460, GTX560 or GTX560ti, or wait for the new 6XX Keplar series.
    I won't recommend though the Palit GTX460 Sonic OC edition since it is a bad overclocker and very noisy, especially under load.
     
    Last edited by a moderator: May 8, 2015
  10. tortureduck

    tortureduck Newbie

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    Does definetely not work with a Dell Latitude 6500.
    After "iasl -g" I could not find any DwordMemory in the .dsl file.
    Works out-of-the-box with 2G Ram.
    My workaoround is to buy a 20,-- 1G sim and reduce my 4G Ram to 3G.
     
    Last edited by a moderator: May 7, 2015
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