Guild Wars 2

i7920@4ghz
2x(4890)
6gbddr3@1600
ssd

I don’t know if I should leave hyperthreading on or off. With HT off, windows is telling me all 4 cores are being used extensively. With HT on, windows is telling me 2 to 3 cores as well as 2 HT cores are being used. I can’t notice any discernible fps difference with it on or off. Does anyone have any insight into this question?

Some claim HT could slightly hurt game performance. I doubt it matters much either way. If it makes no difference, leave it on I think?

Let the temps decide if there’s no FPS gains? Check the temps with HT on/off.

Makes zero difference, tested it a couple of times. Leave it on.

My vote is on off.

Im no intelboy but i think you may want to read this bit,or better yet just gogle it..

http://semiaccurate.com/2012/04/25/does-disabling-hyper-threading-increase-performance/

“As you can see their are a few applications that perform marginally better, to the tune of one to two percent, with Hyper-Threading disabled. But at the same time there is far more to be gained in terms of performance from leaving Hyper-Threading enabled than there is to be gained from disabling it.”

“On average the 3770K with Hyper-Threading disabled offers only 90 percent of the performance of the same chip with this feature enabled. Thus it stands to reason that leaving Hyper-Threading enabled is the best choice for consumers.”

Caedmon.6798:

Im no intelboy but i think you may want to read this bit,or better yet just gogle it..

http://semiaccurate.com/2012/04/25/does-disabling-hyper-threading-increase-performance/

“As you can see their are a few applications that perform marginally better, to the tune of one to two percent, with Hyper-Threading disabled. But at the same time there is far more to be gained in terms of performance from leaving Hyper-Threading enabled than there is to be gained from disabling it.”

“On average the 3770K with Hyper-Threading disabled offers only 90 percent of the performance of the same chip with this feature enabled. Thus it stands to reason that leaving Hyper-Threading enabled is the best choice for consumers.”

Keep in mind though, they are talking about desktop usage where you have a large number of light threads, not compute intensive threads.

Hyperthreading is a clever “hack”, and is not an actual extra core. Its just attempting to use the processor’s internal parallelism to simulate an extra execution thread. It works if the work to be done is relatively uncomplicated.

That said… it may still be wise to leave it on. I asked in another thread because I was curious if anyone had observed anything interesting by testing it on or off.

If you have a lot of desktop background noise, I would think HT helps a good bit.

I’m just curious if anyone has had time to methodically test this. Its more curiosity than the idea I think it would solve performance issues.