AMD Phenom II X4 Quad Core 940 Black Edition 3.0GHz Overclocking

atmax1

atmax1

atmax1

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ok i have the AMD Phenom II X4 Quad Core 940 Black Edition 3.0GHz does anybody know what voltages i need to get it to 4ghz? I have the cooling that i need i jsut cant get it to work, well i get it to find the 4ghz 0'clock buy when your sopost to see the windows loading screen it's just a black screen. I did get working at 3.60ghz tho.

also i open cpuz and my multiplayer and core speed goes up and down is it sopost to? and when processors maxed out it does show the overclock speed.

I have this motherboard http://www.overclockers.co.uk/showproduct.php?prodid=MB-002-BS and coolmaster 1000w psu if it matters.
 
I have heard of it being done.

how comes disable cool and quiet? and i will try now thanks.
 
not all cpus are the same some will do 4ghz some will do 3.8ghz and some 3.6ghz if you can get to 3.6 run prime95 for 8 hours to see if its stable and then go from there.

can you tell us what vcore your using and whats your temps like?
 
atmax1 said:
I have heard of it being done.

how comes disable cool and quiet? and i will try now thanks.
Click to expand...

its very rare and you need good cooling, cant get mine stable at 3.8ghz.

cool and quiet makes your cpu use less volts when not doing anything.
 
Some have had great success with the Biostar mb, it is very important that you provide a heatsink for the voltage regulator area between the cpu and the rear connectors.
 
It CAN be done, 3.4 is pretty much guaranteed with that chip - 3.6 is common and plenty get 3.8 - 4+ is a case of getting a particularly good chip. What can you get it running at?

1.5v is a generally accepted maximum for pII chips if you want to be fairly safe, you could risk 1.55 which may well get you 4ghz and will almost certainly get you 0.2 above what you get at 1.5. You may well blow your board or chip (/both) though.

Does your board allow increments of 0.5 on the multiplier? If you can get 3.6 or 3.8 you may be able to get 3.7 or 3.9, but not 3.8 or 4.0 (respectively)

After you hit the max you can get on the multiplier, don't forget to eep out the last little bit from the chip with the HTT link :-)
 
ok well im going to try n hit 4ghz again in a min but at mo its 3.61ghz tep ia each core is 28c cpu temp is 37c i have the Thermalright Ultra-120 Extreme CPU Cooler with a 120mm fan on it and a haf 932 case
 
The TRUE is a decent cooler... but what are your load temperatures? At idle 28 is an okay temp, but it's what you get when you're actually using it that matters.

65c is the recommended max for the cores, slightly higher for the chip overall.

What voltages?
 
You want 8 hours at least of prime95 without an error for decent stability, with temps 60c or under.

The temperatures you show are fine for idle - but if it crashes within 2 minutes of prime95, it's not a lot of use. That's your problem up to now - you're just increasing the speed as high as it will go without actually testing if it will work.

Drop the HTT link and up the multiplier to 18x, leave the voltage on 1.45 - if it passes 8 hours of prime 95, try for higher speeds, but you should test if you can even get 3.6 before busting its backside trying to get 3.8+
 
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