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I7 950 4 GHZ HT ON vs 4.2 GHZ HT OFF ?

post #1 of 15
Thread Starter 
Hello guys.
Which one would you choose performance wise ?
I mean , especially in games, which would you prefer ?
Edited by madroller - 5/18/11 at 4:23am
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Night Crawler
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post #2 of 15
You mean the other way around? 4.2Ghz without HT. Anyway I'd always pick HT on.
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post #3 of 15
Thread Starter 
AHH yeah sorry for the mixed up.
But can you really tell the performance difference or is it a placebo effect ?
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i7 950 4.2GHZ (21*200 & 1,36V HT Off) Rampage III Formula GTX680 6 GB / 8-8-8-20 KINGSTON 
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Night Crawler
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post #4 of 15
I will take the 4.2 GHz with HT off if most of the programs that you are using does not support it.
    
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post #5 of 15
Performance wise in multi-threaded apps is HT-on no-brainer.

Gaming. HT-off gives a slight bump. But if you're going to run a 950 with HT-off you may as well have saved some coin and gotten an i5 700 CPU instead.
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post #6 of 15
If only gaming that you'll always prefer MHz over HT, so basically 4.2 GHz HT off > 4 GHz HT on if gaming. If encoding, programming ect. you should choose the HT over 200 MHz higher clock.
post #7 of 15
Thread Starter 
Yeah thank you guys , i better keep the 4.2 ghz HT OFF setting because I play games much more.
PS: Are these 45 40 45 40 idle degrees on that 4.2 HT off machine good ? (%100 load=78C)
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Night Crawler
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i7 950 4.2GHZ (21*200 & 1,36V HT Off) Rampage III Formula GTX680 6 GB / 8-8-8-20 KINGSTON 
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Thermaltake Frio win 7 x64 ACER H235H thermaltake element g 
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post #8 of 15
Quote:
Originally Posted by madroller;13548102 
AHH yeah sorry for the mixed up.
But can you really tell the performance difference or is it a placebo effect ?

It depends on the application, software is becoming increasingly capable of utalizing more threads.

Though there are exceptions, like Starcraft II that would probably run better at 4.2Ghz without HT. Had my 920 up to 4.74GHz with HT off, and the difference was definitely noticable.
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CPUMotherboardGraphicsRAM
i7 920 (3930A226) 4.4 GHz | Lapped | 1.36v | HT on Gigabyte EX58-UD3R | Rev 1.6 | FJ18 Asus GTX470 | 900c 1878m | 1.15v 3x2GB Corsair XMS3 | 1680 MHz 
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Stainless Stance
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CPUMotherboardGraphicsRAM
i7 920 (3930A226) 4.4 GHz | Lapped | 1.36v | HT on Gigabyte EX58-UD3R | Rev 1.6 | FJ18 Asus GTX470 | 900c 1878m | 1.15v 3x2GB Corsair XMS3 | 1680 MHz 
Hard DriveOSMonitorKeyboard
Samsung Spinpoint F1 1TB Windows 7 Ultimate x64 SP1 LG Flatron W2252TQ Microsoft Sidewinder X6 
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post #9 of 15
Quote:
Originally Posted by madroller;13548142 
Yeah thank you guys , i better keep the 4.2 ghz HT OFF setting because I play games much more.
PS: Are these 45 40 45 40 idle degrees on that 4.2 HT off machine good ? (%100 load=78C)

SHould be fine as long as you are not getting any lock-ups while gaming or becnhmarking. Always be aware that any oveclock will shorten the life of your CPU.

HAving said that, nowadays, most overclokers change their system anyway every year so it doesn't really matter at all.
    
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
OCZ VERTEX 2 - 120GB PANASONIC BD WINDOWS 7 PROFESSIONAL x64 Retail SONY BRAVIA 40" 
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post #10 of 15
The fps difference is what 2-3fps? If you have a bunch of other apps open while gaming like browsers, music, etc. you'll probably be better off with HT on. The second you close the game you'll be worse off without HT. HT off is usually for benchmarking which requires you to close almost everything down including system services. You probably don't use your computer like that normally though.
Edited by PoopaScoopa - 5/18/11 at 4:49am
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