Let's figure out how to make a DIY eGPU (previously DIY ViDock)

[moral hazard]

yes.

To get the full power out of a card you need it running at around x4 or x8.
Which you can possibly do with the DIY vidock (if your chipset supports PCI2.0).

[mbarry]

Just wondering about the necessary bandwith thing.
Do we know what are the real bandwidth requirements for the new PCIe cards?

As far as I know the PCIe x1 standard is talking about 2.5Gbps -> around 2500Mbps -> 250MB/sec. For me this sounds like pretty much.

Do the nowadays cards really consume much more bandwidth?

Just to point out, thats Gigabits, not bytes. So divide 250 by 8 to get the speed in megabytes.

And if you are only going with the x1 solution, save some money and get the PE4L instead (Unless if you are using 2 PM3Ns).

[Max_Headroom]

Just to point out, thats Gigabits, not bytes. So divide 250 by 8 to get the speed in megabytes.

Usually that's correct, but PCI express encodes each byte of payload data as a 10 bit symbol. In other words, a 2.5 Gbit/s raw data rate = 250 Mbyte/s of payload data. To avoid confusion you may instead call the raw data rate 2.5 GT/s (gigatransfers per second). [Source]

[mbarry]

Sorry, my bad.

Any ideas of how to get a RMA or replacement from HWTools?

[rl2e]

Hi guys, excuse my ignorance if what I'm saying is totally incorrect or what not, but since USB 3.0 will have comparable speeds w/ pci express is it possible to utilize this technology somehow to help in this project?

[User Retired 2]

Hi guys, excuse my ignorance if what I'm saying is totally incorrect or what not, but since USB 3.0 will have comparable speeds w/ pci express is it possible to utilize this technology somehow to help in this project?

USB 3.0 framegrabbers could be useful to redirect video back to the LCD.
USB 3.0 systems likely having expresscard 2.0. Double the bandwidth, so will deliver x1 2.0 performance. Eg: i7 desktop cpu + HD5870 at x1 2.0 delivered ~22k 3dmark06.

[Malumake]

USB 3.0 is part of the the Expresscard 2.0 specification.

[roosta]

i found this on the subject of GPU scaling. thought i would add it on.

http://www.tomshardware.com/reviews/...is,1572-8.html

[nerdyfred07]

anyone here selling pe4L or H? I mean no longer needs so selling? the P&H and price at hwtools is quite horrid

[papsza]

Hi,

Just got confused again with the external PSU thing. Will the cable from the PN3M to the PE4L transport power as well or not? Do I need to feed the PE4L with power separately or it can have the power from the mPCIe port via the cable?? I have a 180W
PSU for my laptop and it is plugged in into the laptop so I can't feed the PE4L separately.

Shall I install Win7 or stay with XP? Do you think I will encounter issues during ati driver install or my windows will see the PCIe card right away?