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OCing my i7-2600k

post #1 of 3
Thread Starter 
Hi all,

I managed to use Asus AI Suite II to AutoTune to almost 4.9GHZ...did not boot as it told me OC failed. I then changed the CPU voltage at 1.375 and my PC is now working.

I am not done with this PC OC, but I will try to get this running at 5.0 at low voltage as I can before I do stress tests.

But here is the thing:


AutoTune (if I set it) just over 4.83 with 1.45v it will work just fine, but my temps will jump well over 80 in less than 10 minutes in Prime95
Now, forget about p95 and any other stress test or benchmarking tools, and focus on winRAR bench for a moment.

If I run WinRAR bench with this setup I will get the score over 6.2k
However, if I lower the volts it will run just over 4.2k...now 4.2k will be the same if I run at stock 3.4 or turbo with it at 3.8...it will be the same bench.

So I guess my question is:

What makes the difference in benchmarking? Does it have to do with voltage or speed it is running at?


P.S. I am running RAM at stock and it is at 1066 (but it is 2k ram).




COOLER MASTER HAF 932


ASUS MAXIMUS IV EXTREME (REV 3.0) LGA 1155



CORSAIR HX Series CMPSU-1000HX 1000W



EVGA 01G-P3-1373-TR GeForce GTX 460



Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost)



CORSAIR XMS 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) Desktop Memory Model CMX8GX3M2A2000C9



Seagate Barracuda XT ST32000641AS 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive



Noctua NH-D14 120mm & 140mm SSO CPU Cooler



Thank you!


P.S.S. Also CPU-Z can read changes on my CPU speeds, but CoreTemp nor SpeedFan nor RealTemp can. For instance, if I am at 4.8 it will show, but when CPU-Z shows that is at 1.6 (low) the rest of the programs will be 3.4, 3.5, and something like 4.2. Not sure if this is because of the new chip and programs not updating properly?

Edited by n00bieNation - 5/27/11 at 11:05am
HAF Intel
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CPUMotherboardGraphicsRAM
i7-2600k ASUS ROG Maximus IV Extreme B3 GeForce 460 CMX8GX3M2A2000C9 
Hard DriveCoolingOSMonitor
ST32000641AS (x2-Raid 0) NH-D14 Windows 7 64bit Home Premium SAMSUNG SyncMaster 2243swx 
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Razer Lycosa CMPSU-1000HX HAF 932 DeathAdder 3500dpi 3G 
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HAF Intel
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7-2600k ASUS ROG Maximus IV Extreme B3 GeForce 460 CMX8GX3M2A2000C9 
Hard DriveCoolingOSMonitor
ST32000641AS (x2-Raid 0) NH-D14 Windows 7 64bit Home Premium SAMSUNG SyncMaster 2243swx 
KeyboardPowerCaseMouse
Razer Lycosa CMPSU-1000HX HAF 932 DeathAdder 3500dpi 3G 
Mouse Pad
Razer Destructor 
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post #2 of 3
Do not use AutoTune for overclocking. While it's a nice feature, it's not nice for people who will want to be running their system to its fullest capabilities, learn how to successfully overclock, and keep their voltages at a decent amount to maintain proper temperatures. I recommend resetting the CMOS so you can start over with your overclock, and do everything manually this time.

To answer your question, when the 2600k is idle, the chip clocks down to 1600Mhz. The reason is does that is to save power, reduce heat, and all of that in one basically increases the life span of your chip. This is a feature Intel calls "SpeedStep". Do NOT disable it. There is no point, and it does nothing but HELP improve the life span of your CPU. Disabling it will provide NO benefit.

And I know we don't have the same motherboard, but here's the guide I followed on overclocking my 2600k. I followed it to the letter for overclocking to 4.5, and I have had fantastic results.

Best of luck!
post #3 of 3
good luck!
Snow Giant
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Snow Giant
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AMD FX-8120 Crosshair V Formula NVIDIA GeForce 9800 GT (Microsoft Corporation -... Corsair  
RAMRAMRAMHard Drive
Corsair  Corsair  Corsair  SSD 
Hard DriveOptical DriveOSMonitor
HDD sony dvd cd rw drive and sony blu ray drive Win 7 Pro Gamers edition 27 LED ASUS 
KeyboardPowerCaseMouse
RAZER BLACK WIDOW 1050 watt corsair tHERMALTAKE LVL 10 GT SNOW EDITION razer mamba 
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