Schwa83 Posted November 27, 2006 Share Posted November 27, 2006 Since HT seems like a concept that has fizzled out with Intel, Does vista benefit from HT or would it have more benefit out of disabling it. I ask because it seems like a gimmick and how the only real benefit is if the software is threaded to take advantage of the "Technology". Since Intel no longer has this with their newer processors, does Vista perform better with HT vs. without? Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/ Share on other sites More sharing options...
:: Lyon :: Posted November 27, 2006 Share Posted November 27, 2006 Hyperthreading == dual core (well multiple cores) right? Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588084787 Share on other sites More sharing options...
shthead Posted November 27, 2006 Share Posted November 27, 2006 In a sense, but its 1 logical and 1 physical core, the operating system is tricked into thinking it has two. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588084796 Share on other sites More sharing options...
Tantawi Posted November 27, 2006 Share Posted November 27, 2006 I say leave it enabled, Windows still sees the additional logical core, and it makes multitasking a lot better. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588085146 Share on other sites More sharing options...
Septimus Posted November 27, 2006 Share Posted November 27, 2006 Vista still takes advantage of HT. It actually does it better than XP or course. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588085157 Share on other sites More sharing options...
null_ Posted November 27, 2006 Share Posted November 27, 2006 Windows Vista does take advantage of HyperThreading technology, without a doubt. Leave it turned on. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588085357 Share on other sites More sharing options...
chrispinto Posted November 27, 2006 Share Posted November 27, 2006 i agree with icefusion - tried it disable and enabled. The CPU sidebar monitor app also detects it as two cpu's and you can see the bar's operating at different %'s so yes, leave it on :) Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588085976 Share on other sites More sharing options...
Schwa83 Posted November 27, 2006 Author Share Posted November 27, 2006 Thanks for the replys guys, always trying to get optimal performance so I just wanted to ask. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588086113 Share on other sites More sharing options...
_kane81 Posted September 11, 2007 Share Posted September 11, 2007 I know this is a bit of a bump, but hey there is some useful info I collected below.... basically it shows that hyperthreading doesnt have any major impact on 3dmarks Quote Some 3DMark03 benchmarks using larry's drivers on Vista 5150 - the 97.34 vista drivers are really slow when compared with 67.66.... wonder if the later vista drivers run any better.... is there anyway to get aero to run on XP drivers?also hyperthreading doesnt seem to play any major role in the benchmarks 67.66 Windows Classic 1280, 1280 (Hyperthreading) 1260, 1280 (Single) 67.66 Windows Basic 1279, 1280 (Hyperthreading) 1281, 1278 (Single) 67.66 Windows Aero (N/A) --------------------------------- 97.34 Windows Classic 737,729 (Hyperthreading) 722, 721 (Single) 97.34 Windows Basic 737,732 (Hyperthreading) 716,722 (Single) 97.34 Windows Aero 728,731 (Hyperthreading) 723,719 (Single) Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841063 Share on other sites More sharing options...
HeartsOfWar Posted September 11, 2007 Share Posted September 11, 2007 Actually, HyperThreading performance is a "hit or miss" kind of thing. It makes the system think it has two logical cores when it really has one, and because of this the OS queues two threads to be processed; however, the second thread isn't processed except in the event that the first thread is stalled. Once the first thread is ready to go, though, it interrupts the second thread which becomes dormant until the first thread stalls again. As you can see, HTT can cause application performance to deteriorate or marginally improve, so I would say unless you have a single core CPU you should disable it. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841115 Share on other sites More sharing options...
SnowRanger13 Posted September 11, 2007 Share Posted September 11, 2007 HeartsOfWar said: Actually, HyperThreading performance is a "hit or miss" kind of thing. It makes the system think it has two logical cores when it really has one, and because of this the OS queues two threads to be processed; however, the second thread isn't processed except in the event that the first thread is stalled. Once the first thread is ready to go, though, it interrupts the second thread which becomes dormant until the first thread stalls again.As you can see, HTT can cause application performance to deteriorate or marginally improve, so I would say unless you have a single core CPU you should disable it. Exactly what I was going to say, well probably better worded. Sometimes it helps by a small percent but in the situations it hurts the % loss are greater then the %'s when it helps. Intel easily could of had Hyper Threading on Core 2 but the performance boost just isn't worth it. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841140 Share on other sites More sharing options...
raskren Posted September 11, 2007 Share Posted September 11, 2007 _kane81 said: I know this is a bit of a bump, but hey there is some useful info I collected below.... basically it shows that hyperthreading doesnt have any major impact on 3dmarks This is a pretty useless benchmark for multithreading. Try running something like Cinebench, Lightwave or the LAME encoder. You'll see a marked increase in performance well outside of the margin of error. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841150 Share on other sites More sharing options...
salterbomb Posted September 11, 2007 Share Posted September 11, 2007 _kane81 said: I know this is a bit of a bump, but hey there is some useful info I collected below.... basically it shows that hyperthreading doesnt have any major impact on 3dmarks that's on a beta version of vista, btw. we're almost at vista sp1 now. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841484 Share on other sites More sharing options...
Nathanael Posted September 11, 2007 Share Posted September 11, 2007 Hyperthreading is about multitasking. C2D already is multi-task friendly and it's also got a HT-unfriendly pipeline. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841695 Share on other sites More sharing options...
Linkinfamous Posted September 11, 2007 Share Posted September 11, 2007 Quote Since Intel no longer has this with their newer processors Hyperthreading made sense with the Pentium 4 pipeline, it was very long, and it made sense to be able to do more than one thing at a time. With the newer processors, they're more efficient, and at the same time, trying to implement Hyperthreading would be pointless. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588841803 Share on other sites More sharing options...
Brandon Live Veteran Posted September 11, 2007 Veteran Share Posted September 11, 2007 If your CPU has HyperThreading, just leave it enabled. The benefits outway any negatives (and I'm not even sure there really are any). Obviously, a multi-core CPU is far more desirable, and I'm pretty sure Intel doesn't even bother with HT in newer chips, though I could be wrong. The idea behind HT is still useful, though - IBM makes good use of a similar technique (SMT) all the time. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588842444 Share on other sites More sharing options...
Linkinfamous Posted September 11, 2007 Share Posted September 11, 2007 Oh. Just found this: http://arstechnica.com/news.ars/post/20070...roller-smt.html Quote Gelsinger says that Nehalem cores will support up to two threads, and that the implementation will be "like Hyperthreading." There aren't a lot of details yet, but Gelsinger did say that Nehalem parts would max out at eight cores and 16 threads. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588842471 Share on other sites More sharing options...
ViperAFK Posted September 12, 2007 Share Posted September 12, 2007 Definitely enable it, Works great with vista, amkes multitasking better, should help a bit with newer games that can take advantage of multithreading. (Hopefully when HL2 Episode 2 comes out hybrid threading will give me a couple fps boost) Makes multitasking better. For some reason when I enabled it in XP it would make apps randomly just "Stop responding" so much that many programs were completely unusable. But in vista it works great and my PC just feels so much more responsive with it on. I can easily Run PS CS3, Firefox with like 40 tabs open, windows media player, and other programs great. Link to comment https://www.neowin.net/forum/topic/516280-vista-hyperthreading/#findComment-588842545 Share on other sites More sharing options...
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