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Need some advice on i7 3770k Overclocking temps and voltages

post #1 of 4
Thread Starter 
Hi guys,

I have some questions about overclocking my rig:

My specs:


CPU Cooler: Corsair H80

Firstly, I have been able to overclock my CPU and keep it STABLE at what I have above, which is a 4.8ghz overclock (Bus 100mhz x 48 multiplier) with a Vcore voltage of 1.355V (1.356V). Temperatures reach a maximum of very low 70 degress C. The ONLY two things I have changed is the multiplier and the Vcore.

Now the question I wish to ask is, how much more can I push this baby? At the moment I don't wish to overclock the memory or anything else, just the CPU for now. I have tried a multiplier of 49 and Vcore at 1.4V but when I go to stress test it with Prime95, I get a message "Prime95 has stopped working" error, however my computer doesn't freeze thank god. I'm sure this is another indication that somethings not right though. I have been using another guide in this forum (http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end) which has been really helpful but its suggesting I shouldn't push the Vcore past 1.4V. So, Have I pushed the CPU as far as It can safely go?? Also are there any people out there that have managed a STABLE overclock of 5ghz? As this is what I'm aiming for.

Cheers in advance tongue.gif
Edited by XGLX - 8/22/12 at 2:29am
post #2 of 4
This is from the guide you have in your post (if you want to keep it simple):

-
When overclocking on air the only two voltages you should need to touch on an Ivy Bridge setup are the Vcore (which you increase) and the CPU PLL( which can be decreased to help temperatures).

With Ivy Bridge, you want to slowly increase the VCore as temperatures will hurt your max OC much more than voltage can stabilize it. I would go one multiplier at a time sticking to my voltage ranges in the graph below. If you end up with too much heat then the logical thing would be to decrease the voltage, however at this point you can try to decrease the CPU PLL, and if that doesn’t help much you can always decrease the VTT and System Agent (IMC) to levels where they are lower but still remain stable. When I was messing around with LN2 I could validate 5 GHz with less volts than my CPU needed at stock frequency, that is how much heat has an impact on frequency. However I do not want to show that shot as people might not always read stuff, but 5 GHz at 1.2v isn’t impossible at -190C
-
Edited by eXXon - 8/23/12 at 1:54pm
TheSadFlute
(16 items)
 
DyingHeart
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CPUMotherboardGraphicsRAM
i7-6700K TUF Sabertooth MSI 1080 Ti 16GB 2400MHz C15 
Hard DriveHard DriveHard DriveCooling
Corsair 480GB LE 3TB WD Green Sammy 500GB 850 EVO H100i 
OSMonitorKeyboardPower
Windows 7 Pro  BenQ XR3501 Logitech G710+ EVGA G2 750W 
CaseMouseAudioAudio
Cooler Master Stryker Logitech G602 Asus Strix Nakamichi 5.1 
CPUMotherboardGraphicsRAM
Phenom II X4 965BE  Sapphire 790X Zotac GTX650  4GB Corsair 1066 DDR2 (1GBx4) 
Hard DriveHard DriveCoolingCooling
G.Skill Phoenix Pro 120GB WD 2TB Green Stock 3x120mm UQ fans 
OSMonitorKeyboardPower
W7 Pro SP1 x64 LG 21' 1680x1050 Genius  Corsair CX600 
CaseMouseMouse PadAudio
Gigabyte  E-Blue Mazer XFX WarPad On-board 
Audio
Logitech G35 
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TheSadFlute
(16 items)
 
DyingHeart
(17 items)
 
 
CPUMotherboardGraphicsRAM
i7-6700K TUF Sabertooth MSI 1080 Ti 16GB 2400MHz C15 
Hard DriveHard DriveHard DriveCooling
Corsair 480GB LE 3TB WD Green Sammy 500GB 850 EVO H100i 
OSMonitorKeyboardPower
Windows 7 Pro  BenQ XR3501 Logitech G710+ EVGA G2 750W 
CaseMouseAudioAudio
Cooler Master Stryker Logitech G602 Asus Strix Nakamichi 5.1 
CPUMotherboardGraphicsRAM
Phenom II X4 965BE  Sapphire 790X Zotac GTX650  4GB Corsair 1066 DDR2 (1GBx4) 
Hard DriveHard DriveCoolingCooling
G.Skill Phoenix Pro 120GB WD 2TB Green Stock 3x120mm UQ fans 
OSMonitorKeyboardPower
W7 Pro SP1 x64 LG 21' 1680x1050 Genius  Corsair CX600 
CaseMouseMouse PadAudio
Gigabyte  E-Blue Mazer XFX WarPad On-board 
Audio
Logitech G35 
  hide details  
Reply
post #3 of 4
Thread Starter 
Umm ok right, thanks for that... wha-smiley.png
post #4 of 4
Pushing the v core past 1.3 probably isn't the best idea would kill your cpu pretty quick then again your temps are very decent.
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