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i7 920 3.8ghz vs 4.ghz

post #1 of 7
Thread Starter 
hi guys
is there any big difference in gaming performance between i7 920 3.8ghz and 4.2 ghz?
5-10 fps or more?
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post #2 of 7
Not noticeable for me. I get ~53 GFLOPS at 3.8 and ~56 GF at 4.0. Plus an increase of 0.04v vcore increase and 6C rise in temps.

Worth it for folding imo, though.
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Aeschylus View Post
Not noticeable for me. I get ~53 GFLOPS at 3.8 and ~56 GF at 4.0. Plus an increase of 0.04v vcore increase and 6C rise in temps.

Worth it for folding imo, though.
ok. thank you!
could you tell me your bios settings to reach 4ghz?
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My System
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Intel Core i7 920 D0 Rev ASUS P6T SE Sapphire HD5870 1GB Corsair XMS3 (3*2) 6GB 1600MHz DDR3 Triple Kit 
Hard DriveOptical DriveOSMonitor
Seagate 1TB 7200RPM SATA-II 32MB NCQ LG 22X SATA DVD LAYER Windows 7 Professional 64-Bit Samsung SyncMaster 2494HS 
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post #4 of 7
depends on the game but if the voltage from 3.8ghz to 4ghz would be a large margin..then its worth sacrificing your temps for a higher clock/voltage settings..

normally an i7 920 D0 chip can do 4ghz on 1.3v on vcore..
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post #5 of 7
Well, each chip system is different, so I'd recommend reading this guide to get you started on the whole ordeal.

I'm running 21x191, QPI @ 1.2125v, vcore @ 1.25625, everything else left at stock.

Again, all systems are different, so if you're new to overclocking or if this is the first time OCing your system, I strongly recommend beginning slowly and learning about your hardware before making any drastic changes. I started at 2.66 GHz and 1.1vcore and bumped bclk by 2 MHz at a time.

Slow and steady wins the race, and fries no hardware.
Rosemari
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Rosemari
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post #6 of 7
Quote:
Originally Posted by Aeschylus View Post
Not noticeable for me. I get ~53 GFLOPS at 3.8 and ~56 GF at 4.0. Plus an increase of 0.04v vcore increase and 6C rise in temps.

Worth it for folding imo, though.
Just an FYI FLOPS is calculated based on the Floating-Point performance of your CPU which pretty much has nothing to do with gaming.

Integer core performance should be your concern when measuring the gains for gaming.

Edit: In your case the only way to increase fps is to increase gpu usage, if the usage is at or nearly always at 99% then overclocking the cpu won't give you anything back as far as fps.
Edited by BallaTheFeared - 4/17/11 at 10:05am
    
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post #7 of 7
Quote:
Originally Posted by kopekbaligi View Post
hi guys
is there any big difference in gaming performance between i7 920 3.8ghz and 4.2 ghz?
5-10 fps or more?
1fps at the very most if your realy lucky. From 3.6Ghz to 4Ghz i don;t see any increase. Only in CPU intensive applications.
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