Maik Fischer

Why need to disable iGPU, would it in theoty increase the performance?

You won't disable the iGPU, but the dGPU (NVS3100M) because this card uses the ressources needed for your eGPU setup to have enough performance.

As I said, it works, but with only 30% of the performance of the iGPU + eGPU in x1.1Opt mode.

1. See if x2 is possible on your system. That means combining expresscard+mPCIe or mPCIe+mPCIe. You need to have those devices as being [port1+2], [port3+4], [port5+6] or [port7+8]. x2 mode requires additional eGPU hardware and would require a less convenience 2 cable configuration via underside panels.

2. Swap your systemboard out for one with the iGPU or iGPU+NVS3100M model.

3. Use an ATI HD7xxx video card instead. It will outperform a NVidia card in lower bandwidth scenarios. Note: older chipsets show only half-duplex performance with AMD cards. Not sure if yours is or isn't affected.

4. [recommended] offload the T410 for a Sandy/Ivy Bridge system with an iGPU + expresscard. Then you can get Optimus pci-e compression AND doubling of bandwidth due to the expresscard being pci-e 2.0. You will need the EC060A cable to get reliable pci-e data transmission. See PE4H (PCIe passive adapter ver2.4) . Budget systems being a Lenovo E420/E520, Dell Vostro 3450/3550, HP Probook 4530s/6560b. A s/h 12.5" HP 2560P offering a great mix of portability and performance potential (socketted/upgradeable CPU) at a low price.

Thanks for answering!

1) would mean getting another PM3N and cable.. no time and money for that.

2) would have to swap it myself, additional costs and my warranty would expire - nope

3) also no, because I use for rendering with the CUDA Kernels only present in NVIDIA cards

4) I tried swapping my T410 in the marketplace in the german thinkpad forum and my account nearly got deleted. So no sympathy there...

So I am at the start again. Maybe I wait for a PM3N adaptor available through ebay, or could I get one in this forum?

Hey guys, I'm new to this forum, but came a long way through NBR and Computerbase forums.

I have a Lenovo T410 with NVS3100M graphics and a PE4H + GTX460 eGPU running. Only Problem is I can't turn off the dGPU, not within the BIOS, nor with Setup 1.x.

What I've done already:

• setup the eGPU with the laptop
  
• eGPU works alongside the dGPU with 30% Performance of other GTX460 eGPU setups (3DMark 5300)
  
• tried to turn off dGPU with Setup 1.x - result is system hangup every time
  
• tried to turn off dGPU within Windows device manager - only iGPU is recocnized when rebooting into Windows, eGPU present but not active in device manager
  
• tried to use "dGPU demoted-on" mode, without any performance difference
  
• all compact methods won't change anything
  

So I need your help please.

I got a clue in the computerbase forum, that my system T410 with NVS3100M is popular for making problems with getting eGPU to work, but I really want it to work

Here's a screenshot of my system specifications.

https://www.dropbox.com/sh/yyxt81ixagktl17/vF8AdlJyUj/t410_systemspecs.jpg