Core i7 Hyperthreading ON/OFF VISTA performance????

You already have 4 physical core. Unless you are using those all the way up then there really isnt any reason to have it. Hyperthreading is mainly there to benefit from multithreaded applications. If you only game then I would turn it off. If you do video encoding, Video editing, 3d modeling/annimation/rendering or anything engineering related then I would leave it on. Most of those apps are multithreaded but games can barely use 2 cores much less 8. Its all about what you do.

If you dont do much more than game, I recomend turning it off mainly because windows does not distinguish the difference between a physical core with one thread and a physical core with 2 threads. It only knows threads and sees a core i7 as an 8 core processor. This can hurt you because if you have a dual threaded application, windows may allocate the threads to the same core and therefore using one core to allocate two threads when you have 3 others sitting around doing nothing. Granted, this only happens for a split second because the load gets split up but that would cause maybe 5-10% decrease in performance I would think. Multithreaded apps DEFINATELY benefit from it. I leave it on all the time. I do alot of 3d rendering. It really helps alot.

Ok Here's the pictures.

HT OFF- 3DMark06 Score & WPrime 32 Score



HT ON- 3DMark06 Score & WPrime 32 Score



As you can see 3Dmark06 is sensitive to HT & I want to try games to confirm real life application situation.

PS:BTW how about my 3DMark06 score. It's OK or Low compared to others?