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should i reseat my h70?

post #1 of 2
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I started overclocking my new 2600k today. i easily reached 4ghz with 1.35 on the vcore. However, i can't tell if my temps are too high. my temps for realtemp 3.6 at load are 63,70,69,67 and in the mid 30s at idle. are these temps good? it seems odd that there is 7 degrees difference between different cores. will reseating and reapplying thermal paste help, or is it normal to have such a big temp difference between cores?

also, even though my vcore is set at 1.35 in bios, cpuz reads it as 1.37 idle and 1.4 at load. is this ok/normal?
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W.O.P.R.
(15 items)
 
HAL 9000
(9 items)
 
 
CPUMotherboardGraphicsRAM
i7 2600k P67A-UD4 palit gtx 570 sonic platinum 2x4gb g.skill ripjaws 1600 7-8-7-24 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 samsung spinpoint f3 one that works h70 
OSMonitorKeyboardPower
Windows 7 BSOD edition sony fw900 $10 at walmart xfx black edition 850w 
CaseMouseMouse Pad
antec lanboy air blue razer SWTOR MMO mouse razer kabuto 
CPUMotherboardGraphicsRAM
Core 2 Quad Q9450 Asus P5K Deluxe Sapphire 5850 Corsair/Crucial DDR2 800 
Hard DriveCoolingOSPower
Western Digital Blue Cooler Master Hyper 212 EVO Windows 7 BSOD edition Rosewill Green 530w 
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NZXT Gamma 
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post #2 of 2
Those voltages are extremely high for 4 GHz considering every chip on the market can hit 4 GHz at stock volts. You need to turn spread spectrum off and turn LLC to the second highest setting.

Try 4.6 GHz/1.35v, it will most likely be stable.

Also, a 7C core temperature difference is completely normal. It's because your thermal monitors are not actually measuring the temperature of the CPU but rather how close the chip is to overheating, or TJMax. Since every CPU core has a different TJMax the temperatures could appear different.

For example, assume every core in your CPU is at 65C:


Core 1 as a TJ Max of 104C
Core 2 as a TJ Max of 97C
Core 3 as a TJ Max of 99C
Core 4 as a TJ Max of 101C

Now since they are all 65C, their distance to TJMax is:

Core 1: 39
Core 2: 32
Core 3: 34
Core 4: 36

But, since there is no real way to figure out what the actual TJMax of each core is the temperature monitor has to assume each chip has a TJMax of 100C. This causes different temperatures to be displayed as the TJMax is now the same whereas the different to TJmax are all different.

I have an 8C core temperature difference, 7C is fine. Most people have within a 6-10C range between their cores.
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Labor of Love
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CPUMotherboardGraphicsRAM
2600k @ 5.0 GHz/1.42v ASUS P8P67 Pro MSI GTX 670 OC 20 GB/1600/7-7-7-24 
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120GB Vertex SSD Western Digital 1TB None! Ubuntu 12.04/Win8/OSX 10.8.2 
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27" 1440p X-Star OCN Mechanical - MX Browns Seasonic X-560 800D w/RX480 top mounted 
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Logitech USB Generic 
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