for the assumed case u really want to have a comparison, load urban terror, open console, type "/timedemo 1", hit enter and play a demo... it will replay very fast, and after its finished open the console: it will show an average frames-per-second value.
do that before disabling the second core, and after u did it. replay the same demo after.
now u should have a higher fps value.
(in rare cases it doesnt, so... see the yellow stuff)
if you want to disable the second core for opengl, you sometimes can do that via the nvidia control panel (if u got a ati grapics adapter or if u got the german version it wont, at least i did not find out how)
but in general you gotta use regedit.......
(START -> Run -> type "regedit", hit enter ... if u do this, you should know at least a bit what you are doing... fucking up ur registry could mean ur operating system is going to be unstable/freezes/reboots/whatever, if you know what ur doing i guess u arent even reading this line...
)save ur registry before u fuck with it, in case you need to have the multi threading enable again... so u can just reload it then!
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Page 15 of 120.
There may be intermittent application compatibility issues with dual
core CPUs.
If you experience this issue, you can work around it by toggling off multithread
optimizations using the following instructions:
1 Launch regedit and determine the current primary display card by
looking in
HKey_Local_MachineHardwareDeviceMapVideo
and note the GUID (global unique identifier assigned by Windows),
which is the long string in brackets { } at the end of the entry
?devicevideo0?.
2 Look in
HKey_Local_MachineSYSTEMCurrentControlSetControlVideo
{GUID}\0000
where {GUID} is the number derived from the previous step.
3 Open the ?0000? directory and create a new DWORD called
OGL_ThreadControl and give it a value of 2.
This will disable multithreading in the driver for all OpenGL applications.
4 If you want to disable driver multithreading for all Direct3D applications?
In the same ?0000? directory, create a new DWORD called
WTD_EXECMODEL and give it a value of 0.
source:
http://forums.nvidia.com/lofiversion/index.php?t17646.html
