DIY eGPU experiences

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

  1. Slagatron Prime

    Slagatron Prime Notebook Enthusiast

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    Ah, you may be onto the problem. Would the card not be recognized at all, even at idle, if the psu wasn't strong enough? I have a Cooler Master Extreme Power 460W with 18A across 12v+ rails one and two. But I couldn't get that one to jump using a paper clip. The fan will twitch when you flip the switch, but then it stops and the thing won't turn on. It WILL turn on as soon as you hook the 20pin into a mobo, so apparently some pin besides PS ON and a COM need to be connected to jump that PSU. So I've had to use a PSU pulled from an old Gateway desktop, which will put out 256W across the +12v rails combined (two of them), which should be sufficient though not ideal...now that I think of it though, I don't know which of its connections are on which rail, since I obviously don't have a spec sheet for it. The Cooler Master PSU as is would be carrying 150W on one rail and 75W on the other since I have two 6 pins on rail 1 and the pcie slot on rail 2. I can't remember the Amperage rating for the old PSU. I will check when i get home and edit this post. I will try to find an adequate PSU to test with before I give up on the PE3A. Thanks for the help Kizwan.
     
  2. kizwan

    kizwan Lord Pringles

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    Actually, eGPU will only draw power from +12V1, not both. +12V2 is only for CPU (4-pin power connector). Other connectors are connected to +12V1.

    GTX560Ti power requirement is minimum 170W & can consume up to 205W when at peak 3D. So, PSU must have at least 19A of max current on +12V1 or +12V (12V * 19A = 228W, calculated with 10% margin).
     
  3. Slagatron Prime

    Slagatron Prime Notebook Enthusiast

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    I have the PE3A wired to the +12V2 4 pin, using a 4 pin adapter that I cut the yellow and black leads from the male end I,m not using. So those power and gnd wires are soldered directly to the PE3A's 12v terminal posts, and the PE3A's internal power regulation system has been cut in such a way that it only allows a 12V connection to the PE3A and not a 5v or 3.3v connection Wouldn't that work? Giving me 75W at 6.25A on +12v2? Also, I tested the PE3A and gateway PSU (made by HIPRO, it's 18A across both rails. combined, that should be much greater than 19A) with the old gateway GPU, an ATI pcie card that has only a pcie connection - meaning its power requirements are pretty low - obviously, if the HIPRO was running the whole gateway system before, it should be able to do just the card, but I couldn't get it to pick up. Unless, of course, the 4 pin thing doesn't work - it does send at least some power though, because both gpu's i've tested warm up a little, and the 560's fan starts even while plugged in only to the PE3A, with no 6 pin connection. It will not turn on under 6 pin power with no PCIE power.
     
  4. zodiark1234

    zodiark1234 Notebook Enthusiast

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    Are there any brick and mortar retailer that sells the PE4H adapters, or are they such a niche item that they must be purchased online?

    Anywho, despite using the older Arrendale Core i5, the PE4 setup with the GTX 460 would still be somewhat more practical than building a desktop just for gaming, and more enjoyable than a similarly priced console for myself. I really appreciate the information this thread has provided. Before, the only such solution I've heard of was ViDock, and that would be ludicrously expensive.
     
  5. Slagatron Prime

    Slagatron Prime Notebook Enthusiast

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    Pretty positive you have to get them through HIT or Bplus, otherwise we would all be buying them from somewhere else and not paying $20 shipping :)
     
  6. vivekm85

    vivekm85 Newbie

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    @kizwan
    thank you very much for your reply. Can i use this tutorial to use with GT430?(There was a post whcih used it for GTS450 not GT430) i want to get the maximum out of GT430. So would you recommend the PE4L or PE4H to use with GT430?
    My device manager looks like this
     
  7. zodiark1234

    zodiark1234 Notebook Enthusiast

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    I just opened up my laptop and the wireless card is half length. I might have trouble fitting the adaptor. :(
     
  8. Khenglish

    Khenglish Notebook Evangelist

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    It's random. SWTOR runs very well on a PCI-E 2.0 link, however on PCI-E 1.1 it microstutters around 30% of the time. I do not know about tera.
     
  9. kizwan

    kizwan Lord Pringles

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    You also need to make sure the two 6-pin PCIe power connector able to supply enough power to drive GTX560Ti. Unless the graphic card is faulty, I'm sure your PSU unable to deliver enough power. I bet it unable to deliver 18A on +12V1 at all. Must be less than that.
    Yes, you can follow that tutorial. GT430 power requirement is only 49W. You can use either PE4L-EC2C or PE4H-EC2C. They both deliver the same performance.

    According to screenshot, PCI bus with 8 digits memory address is 0xBDE00000, which means TOLUD is 2.97GB. Please compare it with TOLUD table at Pre-Purchase FAQ (2. How can I check if my notebook is compatible with an eGPU?). As long as TOLUD is equal or lower than 0xD0000000 (3.25GB) your notebook will have enough 32-bit PCI space for a eGPU to work with 4GB or more of system RAM.

    If you buy PE4L/PE4H from HIT, you will get Setup 1.x for free. Setup 1.x might be needed to fixed, for example, if you get Error 12 in Device Manager.
     
    Last edited by a moderator: Feb 6, 2015
  10. hlgr

    hlgr Notebook Enthusiast

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    GTS450-to-go is complete! :D

    [​IMG] [​IMG] [​IMG] [​IMG]

    Plastic toolbox that cost €15 for 3 (13", 16", 19", I used the 16" one), a couple of holes and screws later...

    The little knob on the outside is a fan regulator for the GPU fan. The GPU fan is an 80mm case fan that I had lying around. Had to do the mod because I managed to fry the fan the GPU came with :rolleyes:
     
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