crazym0dz Posted January 30, 2005 Posted January 30, 2005 Does turning of Hyper Threading help in single prgram performance? As in gaming. Share this post Link to post Share on other sites More sharing options...
r_target Posted January 30, 2005 Posted January 30, 2005 Nah, doesn't really make any difference. Share this post Link to post Share on other sites More sharing options...
gravy Posted January 30, 2005 Posted January 30, 2005 i dont think so as when a program is run on an HT cpu with an HT supported OS it assigns the software thread to one affinity or the other, or am i wrong ? Share this post Link to post Share on other sites More sharing options...
Pent uP Rage Posted January 30, 2005 Posted January 30, 2005 (edited) No, it doesnt work that way. You'll only be using half your cpu. Try this, run a game (or whatever program you KNOW would use 100%) w/ HT on and open Task manager. You'll see it runs at 100%. Now exit and go turn HT off. Go back to Windows, open Task manager and run the same program. You'll see you're only using 50% cpu. I tried it when I first built this system when HT came out. I doesn't work quite the way you're thinking. Edited January 30, 2005 by Pent uP Rage Share this post Link to post Share on other sites More sharing options...
Vampire Posted January 30, 2005 Posted January 30, 2005 I find HT actually improves it slightly, at least in benchmaking. In real world gaming you wont see a difference. Share this post Link to post Share on other sites More sharing options...
BabyBalrog Posted January 30, 2005 Posted January 30, 2005 No, it doesnt work that way. You'll only be using half your cpu. Try this, run a game (or whatever program you KNOW would use 100%) w/ HT on and open Task manager. You'll see it runs at 100%. Now exit and go turn HT off. Go back to Windows, open Task manager and run the same program. You'll see you're only using 50% cpu. I tried it when I first built this system when HT came out. I doesn't work quite the way you're thinking. 407651[/snapback] Even if that is how it is displayed, that is not how it is really working. Ok I didn't mean to imply that it magically frees up 50% of the CPU power. Hyperthreading is a psudo SMP method that allows the ALU of the core to be constantly fed by work to do. So there are two "lines" going into the Units to be done and it feeds of those as fast as it can. So with HT OFF one of those lines is not being utilized, but if the otherone is keeping the ALU working at full past then everything is still running smoothly I hope that helps. Now the question is "Will you get better performance without HT?" While my explination doesn't addres that directly let me say this, Windows has many services running in the background, so having HT on can likly smooth out their interfearence with your beenchmark / gaming etc My advice leave it on. Share this post Link to post Share on other sites More sharing options...
Pent uP Rage Posted January 31, 2005 Posted January 31, 2005 QUOTEOk I didn't mean to imply that it magically frees up 50% of the CPU power. Hyperthreading is a psudo SMP method that allows the ALU of the core to be constantly fed by work to do. So there are two "lines" going into the Units to be done and it feeds of those as fast as it can. So with HT OFF one of those lines is not being utilized, but if the otherone is keeping the ALU working at full past then everything is still running smoothly I could never have said it better than this. Share this post Link to post Share on other sites More sharing options...
lt_navvara Posted February 1, 2005 Posted February 1, 2005 early on i had the same questions so i've tried turning ht on/off (mainly because of long UT2k4 load ti times). in ALL benchmarks the score was slightly lower (about 10-15%) but my loading times got better and windows seemed to load faster but in that case loading times varied too much since the results are limited i decided to keep ht on (duuuH!) Share this post Link to post Share on other sites More sharing options...
HoLoDreaM Posted February 1, 2005 Posted February 1, 2005 I find HT actually improves it slightly, at least in benchmaking. 407682[/snapback] hmm.. ive never made a bench before.. so HT helps when im making benches (benchmaking) ? Share this post Link to post Share on other sites More sharing options...
lt_navvara Posted February 1, 2005 Posted February 1, 2005 hmm.. ive never made a bench before.. so HT helps when im making benches (benchmaking) ? 409150[/snapback] using HT on your computer will help u ALLOT, u'll get a huge boost in all benchmarks and in gaming your rig will run smooth butt pie Share this post Link to post Share on other sites More sharing options...
HoLoDreaM Posted February 1, 2005 Posted February 1, 2005 lol i was making a joke on what vamp said about benchmaking (his typo).. (like the things you sit on) i dunno.. i guess u didnt catch on Share this post Link to post Share on other sites More sharing options...
lt_navvara Posted February 1, 2005 Posted February 1, 2005 sorry you seemed so noobish, hope i don't get banned for it Share this post Link to post Share on other sites More sharing options...
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