deadlee690 :
i have a q6600 running prime 95 stable at 3400mhz with a cpu fsb 377 and a cpu voltage of 1.58750v
1.58 volts is too high.
deadlee690 :
after looking closer at your cpuz i noticed that you underclocked your cpu! im sorry but its all wrong, you have your multiplier at 6 with a bus speed of 267 which gives you a cpu speed of 1603mhz. your going to burn out your cpu if you keep giving it the normal 1.35v at that low of a speed, thats why its running so hot. try a multiplier of 9 and a bus speed of 333 which will give you a speed of 3ghz. good luck!
:lol: :lol: :lol:
That is SpeedStep automatically reducing your internal multiplier during low CPU loads. It also reduces your CPU voltage.
I see a lot of wrong answers in this thread.
The stock cooler is good for 3.0 GHz. Anything higher will require better cooling. The Hyper 212+ EVO is a great choice for around $40.
Suggests for appling thermal compound:
http://benchmarkreviews.com/index. [...] mitstart=0
Run your internal multiplier at max (X 9). That will minimize the load on your memory. After the CPU, memory and bad memory settings in the BIOS will be the second limiting factor in your overclock. Third will be your motherboard. Fourth will be your case and cooler.
This should be your first stop.
Core2 Overclocking Guide (generic guide based on an Asus motherboard)
http://www.tomshardware.co.uk/forum/259899-11-core-overclocking-guide
Next stop should be a guide for your particular motherboard. Google is your friend.
Go through the guides. Then take your core voltage off Auto and set your memory voltage to 2.2 volts. Change the System Memory Multiplier (or whatever your BIOS calls it) from AUTO to 2.00 - whatever you need to do to set the Memory Frequency to twice the FSB. Then when you increase the FSB, the memory clock will rise in in proportion with it. At an FSB of 266 MHz, your memory clock should be at 533 MHz. A 2:3 ratio means that your FSB freq is 266 MHz and your memory
clock is at 800 MHz.
This is important because if you leave your memory settings on Auto, DDR2-800 RAM will be running at DDR2-1000 speeds (or trying to) when you increase your FSB frequency to 333 MHz. You also want to keep the FSB:RAM ratio at 1:1. There are no practical gains to overclocking RAM in a Core2 systemand the improved stability is worth it.
Overclocking RAM:
http://www.tomshardware.com/forum/251715-29-ratio-myth
I am unfamiliar with the Asus X48 BIOS (I use G'byte boards) so I cannot give you any advice on what settings to use. Learning to use the BIOS will enable you to overclock both farther and better.
Intel's max recommented voltage for the Q6600 is 1.50 volts. Max recommennded load temps is about 70 C.
Turn off Speed Step while you are working out your BIOS settings. Once you have finished testing, reenable it. There is no point to running at full speed when you do not need to.
I have a Q6600 in a G'byte EP45-UD3L, TRUE cooler, Antec 900 case running at 3.6 GHz. Stock voltage 1.2625 volts increased to 1.425 volts. Load temps are 61 C - 66 C, Prime95 stable after 24 hours.
There's a lot of discussion about how long you need to run P95. Consensus is 4 - 8 hours is adequate. I am just a little fanatical about stability. Start with the small fft's test. 15 minutes will maximize the core temps. Run it for about an hour. Then change to the blend tests. This will do a better job testing the memory settings. When they both run for an hour, you can start the final testing for as long as you see fit.
Keep in mind that these are guides, not cookbooks. YMMV. Because of all the variables, you may not do as well as someone else with a similar system. Or you might do better.
----------
Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz 
Facebook
Twitter
Instagram