There is a common issue with Samsung flagship notebook, NP880Z5E.
CPU: Core i7 3635QM (2,4-3,1Ghz)
VGA: HD8870M 2GB RAM.
First of all problem exist in all OS, and all drivers, updates etc. There are a few owner including me who tried a bunch of things.
The problem is that suddenly 3D perfomance drops regulary. For example WOT 40 fps down to 15fps.
ANALISYS: I've monitored GPU and CPU temps and usage as well. GPU and CPU doesn't beetween 60-70C, there is no thermal thorttling. When FPS is good, GPU usage is between 64 and 100%, 1 CPU core i up to 90-100%. When frame drops occur, CPU falls down to 50% usage ( please note that CPU speed still remains 3,1GHZ), and GPU uase up to 98% constant.
1.If i change Powerplay setting in power templates of windows to battery maximize, than back to maximum performance, all good for a while.. Please note if i change powerplay setting within CCC, nothing happens.
2.Pull out power cord, and than back sometimes makes it good again.
Looks like it is some kind of power related issue. Any suggestions?