I happen to have two identical X201 Lenovo laptops, both with Windows 7 installed, latest drivers, etc. However, only one manages to run 3D computer games with decent performance.
I have gone through every configuration setting I can think of to find out why one is performing so much better than the other, without success. The only thing I can find (from Process Explorer) is that on the poor performance machine, the "GPU Usage" never seems to go above about 40%, whereas the other reaches above 90%. All other metrics are similar on both machines (CPU usage, RAM usage, dedicated/system GPU memory, etc).
So my question is: What might be limiting the GPU usage on one of the machines? I guessed it may be to do with power options to keep the machine cool, but all power options are similar on both machines. I have tried to force everything to "performance" on the low performance machine, with no change. I have also tried running GPU stress test tools but still the usage never goes above 40%.
Thanks for any ideas!