DIY eGPU experiences

[atticus182]

I have a question about PE4H :

Does the v2.4 will work with Expressport 2.0 and will a v2.5 be release soon?

Also, Do the geforce gtx 560 ti worth the wait or I buy the gtx 460 now?

Thanks

[acer47ok]

Okay I've been messing around with my vidock.

460 gtx SE stock 650mhz optimum internal display

3dmark 06 stock
SM2 2938 HDR 3731

748mhz core + 25mhz memory overclock
SM2 3026 HDR 3843

800 mhz core + 50mhz memory
SM2 3044 HDR 3833

825 mhz core + 75mz memory overclock
SM2 3051 HDR 3826

UNDERCLOCKED as low as possible (425-448mhz cant remember)
SM2 3025 HDR 3746

So...with my vidock set up....overclocking the card I may be able to gain a mere 50-70pts per test. I don't think it justifies the extra heat/wattage...I see no difference in FPS in benchmarks, cssource....in sc2 the thing that mainly affects framerate is anything that takes up CPU resources not the GPU.

So my bottleneck is the CPU........but is there any benefit to overclocking a vidock card since we are limited to x1 speed? If one had to choose, is it better get a 450 gts vs a 460 gtx as long as you can do optimus?

When I use the external display, I can see that there is a slight performance boost when overclocking, but not when I use the optimus internal.

[masterjumong2012]

hi everyone
i just recieved my video card, psu and resistors. my PE4L EC2C + ATX Power Switch will arrive tomorrow afternoon according to my tracking #




i also bought a 4GB USB Flash Drive just incase i need to do the DiY Setup

i also pre-installed a handful of programs and stuff


i also upgraded my RAM from 2.5GB to 4GB


then i read something that makes me worried

i know that desktop motherboard can give juice of up to 75w of power on PCI-Express slot on the mobo.

then i saw this article saying that floppy power connector can only provide up to 36w of power


All about the various PC power supply cables and connectors

according to the article, even if i use a 4pin molex connector, i am still short of 15w of power because it has only a maximum power of 60w

i don't have any extra laptop power brick to use

what do i do now? should i use the floppy power cable on the psu or use the included floppy to molex

[acer47ok]

What kind of power supply is that? It should have at least one pci-e cable.
Then just use the 2x 4-pin molex to 1x pci-e adapter that should come with the video card....u should be fine. And you do not need a atx power switch. Just get a paper clip and connect the green wire to any blackwire.

[User Retired 2]

I have a question about PE4H :

Does the v2.4 will work with Expressport 2.0 and will a v2.5 be release soon?

Also, Do the geforce gtx 560 ti worth the wait or I buy the gtx 460 now?

Thanks

See the details I have posted here about pci-e 2.0 compliance of the hwtools gear. Summary: the mini HDMI cable they use is not pci-e 2.0 compliant. They are doing further tests.

If you can do x1 2.0 Optimus, which we haven't had a confirmed result for as yet, then I'd get the fastest card possible. Optimus looks to approximate double bandwidth so x1 2.0 Optimus is equivalent to x4 1.0 or x2 2.0.

If looking to use just x1.Opt then there's US$93AR deals on a Galaxy GTX460-768MB as masterjumong2012 invested in above. That's three times less than the ~$280 GTX560 release price with likely less than 15% performance separating the two in the DIY ViDock setup.

then i saw this article saying that floppy power connector can only provide up to 36w of power
according to the article, even if i use a 4pin molex connector, i am still short of 15w of power because it has only a maximum power of 60w

The floppy molex uses a 12V, GND and GND lead to transmit power. Each lead is rated for 25W, so there's your 75W slot total. The floppy molex lead gave zero problems with any of the cards I tested: HD4670, HD5750, GTX470.

So my bottleneck is the CPU........but is there any benefit to overclocking a vidock card since we are limited to x1 speed? If one had to choose, is it better get a 450 gts vs a 460 gtx as long as you can do optimus?

When I use the external display, I can see that there is a slight performance boost when overclocking, but not when I use the optimus internal.

A GTS450 would make more sense for internal LCD usage only for (1) it's cheaper price and (2) it can be made to work with a 12V/120W adapter.

You can see the bandwidth limitations means a powerful GPU is spending more time waiting for data than it is processing it.

[Mjolner]

So is there any chance we will be able to do x2 optimus at some point?

[acer47ok]

Summary: the mini HDMI cable they use is not pci-e 2.0 compliant. They are doing further tests.
.

So does that mean all our PE4L boards will soon become obsolete? Would we have to upgrade the cable, the pci adapter, and the board?

[User Retired 2]

So is there any chance we will be able to do x2 optimus at some point?

I had a x2 1.0 setup with the DV4-2000 + GTX470. Unfortunately the NVidia driver didn't engage the x1.Opt tweak, which I believe is end-to-end compression. I've asked NVidia to unlock the driver here but they haven't been warm to the idea as yet. Which means would need a skilled hacker to try to unlock it for us instead.

The other option is to wait and see if the same tweak applies on x1 2.0 links. x1.Opt gives quite impressive benchmark results. x1 2.0 Opt would have doulbe the bandwidth to play with so could really deliver a new level of performance altogether.

Which then leads to the question of pci-e 2.0 compliance of the hwtools gear...

So does that mean all our PE4L boards will soon become obsolete? Would we have to upgrade the cable, the pci adapter, and the board?

I've asked that question to which hwtools have done testing and identified the mini HDMI cable as not being pci-e 2.0 compliant. I've update this thread as more news/progress is made.

[Angry]

Has anybody tried this on a Dell Studio 1535?

[Wajper]

Hi All

I have Asus a8js:
* core2duo T7200 (chipset intel 945PM, ICH7-m)
* 2 GB ram
* geforce go 7700 (dedicated mxm)

I just bought Galaxy geforce GTX 460 for Diy Vidock and my configuration is:
* PE4L
* EC2C
* PSU Corsair CX430

Now I have a error (code 43) on GTX 460 but go 7700 works fine. What should I do?? How to disable dedicated go7700 ? Which drivers should I install and how to do it? Now i have installed 266.58 notebook version (mod INF) for go7700 and desktop version 266.58 for GTX 460.

PLEASE HELP !!!