02-11-2014 05:54 AM
I recently bought an IdeaPad Z500 which features a Nvidia GT 740M 2GB video card.
Even if the card is 64 bit the results I'm getting with it on 1366x768 resolution are quite poor compared with others with the same video card.
The score I get in Windows 7 64bit WEI is only 4.8 on Graphics (compared with 5.9 with a GT 420M built 3 years ago)
In the Nvidia control panel settings is the GT 740M card set as default card for applications.
The driver is the latest for both Nvidia (332.21) and Intel HD4000 (18.104.22.16812).
Any ideas on what could be the problem ?
02-11-2014 10:04 AM
Welcome to the Lenovo Forums.
As you have both Intel and Nvidia GPU, the system utilizies the Nvidia Optimus Technology to switch between Intel and Nvidia GPU. The Graphics score of 4.8 on the screenshot is most likely due to the Intel GPU that the system is utilizing and the 3D Business and Gaming Graphics score of 6.7 is due to the Nvidia GPU kicking in.
From the above results, is the unit with a GT 420M GPU that's getting a 5.9 score on WEI running on Nvidia Optimus too?
Other things that you can try to maximize the use of the Nvidia GPU:
2. Configure Nvidia Control Panel's "Power management mode" from Adaptive to Maximum Performance
3. Follow this guide on how to add an app to use with the Nvidia Optimus Technology and observe
As an alternative to Windows Experience Index, consider running Passmark's Performance Test on the Ideapad Z500 and run a 2D/3D Graphics benchmark then compare the results to unit running a GT420M GPU.
02-12-2014 12:16 AM
Hi and thank you for the quick answer.
I tried everything you mentioned. I even uninstalled Lenovo Energy Management and managed the performance via Windows.
I still get 4.8 in WEI with all the above settings done
The other notebook with GT 420M uses the intel i5 460M and I don't think it has Nvidia Optimus....
02-12-2014 05:08 PM
Don't worry about WEI. It usually uses integrated GPU for those tests.
To check if your system is actually using Nvidia GPU in WEI and other apps/games just go to Nvidia Control Panel-> Desktop-> Enable GPU activity icon in notification area. When the icon turns colorful it means dedicated GPU is in use. When you click at it a list of apps using it will pop up.
02-12-2014 11:25 PM
02-12-2014 11:43 PM
02-13-2014 12:57 AM
Those results seem to be correct. Unfortunately you have a GT740m based on GK208 GPU, which means you have DDR3 memory and 64 bit bus width, which limits the performance. On the other hand on 1366 x 768 it should run most of the things you throw at it, but often on lower settings.