pieguy

Hi guys, I am having trouble identifying my Tolud size. I see 4x PCI bus, three have 5-digit address, one says 7F000000. None are A/B/C/D/E0000000. I have Lenovo Thinkpad T500, which I am hoping to upgrade to from 2gb to 4gb RAM, so I need to know if my eGPU will still work with 4gb. Thanks

Sorry if I was unclear, I have a monitor connected to the 750 through DVI. So I edited the nvam.inf of driver 285.62, seeing how Nando used that with a 4500mhd and 560 Ti http://forum.techinferno.com/diy-e-gpu-projects/2905-[guide]-13-dell-latitude-e4300-gtx560ti-%40x1-opt-pe4h-2-4-a.html#post40077 However, after successfully installing 285.62, I get error 43 in Device Manager and no video output to monitor. Edit: decided against trying with 270.61; no reason an even older driver will work Is error 43 fixable in my situation? My 750 is recognized as such and there were no errors when installing the driver, even though 750 is not supported by this version.

I downloaded the driver and inf file. I was able to install the driver, but I don't think Optimus is enabled. I made sure to uninstall previous driver. In Nvidia Control Panel, there is no option for "preferred graphics card" and I have no option to run programs with a different gpu. Maybe driver 335.23 doesn't support Intel 4500mhd? Do you know a driver that can support 4500mhd and GTX 750? Edit: This 335.23 notebook driver fixed my sleep/hibernation problem, so it's an improvement over desktop driver.

@Snakecharmed: Just wanted to see if there was more performance to be gained, especially since my game is DX9. Playing competitively, every frame is important. A non-critical bug: My laptop cannot resume from sleep or hibernation if I turn off or unplug the PE4L. Sometimes there is a blue error screen about display driver, other times just black screen. Either way, my computer reboots itself and windows complains it was not shut down correctly. I also must have eGPU plugged in before powering on my computer. Switching the order also causes reboot.

To the OP: did you ever get optimus to work? I have Lenovo T500 (same Intel card) with GTX 750 and I also want to enable Optimus. I am currently using driver 335.23

I bought an Asus Nvidia GTX 750 (not TI) from my local electronics store and now my performance is much better in GTR2, as well as Wings of Prey, which I believe is a DX9 game. In same settings in GTR2, I can get 40+ fps now, compared to 8 with 7770. I am using 335.23 drivers, the latest from the website. How should I try to enable Optimus? The links here to older drivers no longer work. DIY eGPU experiences - Page 122 I wish I had gotten the GTX to start with now. In my opinion, AMD cards are awful for eGPU + older games.

Thanks for your reply. Unfortunately, I don't have access to any other graphics cards for testing. Can you specify the performance of the 5750? I believe the 5750 is already a bit slower than the 460. My gut feeling is that the single-digit fps is because of a software error. I thought maybe the driver would be the problem, but I installed Catalyst 12.3 and 13.6 in addition to 13.12 which I originally used, and there was no difference in-game.

I have some bad news. I can get video output and run games, but performance is terrible in Simbin's GTR2 (2006), the game I bought the eGPU to play. GTR2 is a DX9 racing game and in situations where there are several cars on the screen, even my Intel GMA 4500mhd outperforms the eGPU. For example, on low settings, vs 10 AI cars, Intel = 25fps, eGPU = 5 fps. This means with eGPU online racing is impossible. The eGPU is good at stuff like high textures/resolution, and some newer games like Bioshock 2 and Starcraft 2 have good performance, but its GTR2 performance is unacceptable to me. Does the eGPU hog CPU resources? That is my guess because in GTR2, changing resolution/AA/textures has little impact on framerate. I am using latest AMD drivers. Whats your experience with older games guys?

Hi everyone. I received my PE4L v2.1 EC060A yesterday and am expecting delivery of Sapphire Radeon 7770 and Corsair CX430M (modular psu) in a few hours. I have no desktop building experience so I am hoping one of you can confirm I have the correct steps in attaching all the cables: My laptop: Thinkpad T500, W7 Pro 64 bit dual boot with Ubuntu, Core 2 Duo p8700 2.53 ghz, 2gb ram, Intel integrated 4500mhd. Originally, my laptop had switchable graphics with Radeon 3650, but that is now broken and I disabled it in bios, and I believe I uninstalled the 3650 drivers. How I plan to connect everything: Since I have Intel C2D ICH9M chipset, I will put the PE4L on x1 SW2 setting and no delay SW1. Connect 5v/12v power supply cable to PE4L, and find suitable 4 pin plug on CX430M Plug in 7770 to PE4L, plug 6pin power connector from CX430M to 7770 Plug 24 pin plug from CX430M to SWEX power supply switch Connect monitor to 7770 Unused: Dupont 2 pin cable (red and black) Powering on and 1st startup: Turn on CX430M, turn on SWEX switch Begin booting W7, press F8 to pause boot Plug in PE4L express card adapter Resume booting W7 After booting, I am hoping my external monitor will become primary display and W7 will begin searching for 7770 drivers. I have a final question. If I am done using 7770 and I want to revert to integrated graphics, what is the procedure? Do I need to standby windows or restart computer before unplugging PE4L? Thanks for your help

Update: I have ordered PE4L v2.1, Sapphire Radeon 7770, and Corsair CX430M I'll try to do another write-up when everything arrives.

Hello everyone, I saw user Snakecharmed post#2709 in the "DIY eGPU experiences" thread about having problems getting the Lenovo Thinkpad T500 to work. Does anyone here have a successful story with this laptop? Does Snakecharmed have an update on his/her build? I am a new member and cannot send PM yet. My specs T500 W7 Pro 64-bit/ dual boot Ubuntu 13.10 Core 2 Duo p8700 2.53 ghz 2 gb Ram Intel 4500hd graphics *broken - Mobility Radeon 3650, I have this disabled in BIOS, laptop was previously switchable I was considering the PE4L EC060A (v2.1) with Nvdia 750 Ti Edit: eventually got Radeon 7770 I don't think I get a benefit from PE4L "gen 2", but it is the same price as PE4L v1.5 This would be a big investment for me, so I am really want to make sure it works. Thanks for reading