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I have a Asus P5N-E SLi with an E5200 cpu I am having problms over clocking the CPU. It seems that the CPU multiplier is locked at 12.5 and I can't make it go any higher
Problem overclocking Asus P5N-E SLi
- Thread starter didgemaster
- Start date
Hi there
The multiplier is 12.5 thats the highest it will go,don't know about your board but you maybe have a option to lower the multiplier
use the 12.5 with a 300 fsb and you`ve got 3.7gig
Thats what i`ve managed on my gigabyte p31
Hope that helps
Steve
The multiplier is 12.5 thats the highest it will go,don't know about your board but you maybe have a option to lower the multiplier
use the 12.5 with a 300 fsb and you`ve got 3.7gig
Thats what i`ve managed on my gigabyte p31
Hope that helps
Steve
Yes as above the multi is locked and cant be changed upwards. You need to do it via the FSB.
If you have 800Mhz RAM you could run the FSB all the way up to 400 assuming your chip would take it. Take a look in the motherboard section at the official P5N thread theres loads of useful info in there
If you have 800Mhz RAM you could run the FSB all the way up to 400 assuming your chip would take it. Take a look in the motherboard section at the official P5N thread theres loads of useful info in there
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I am confused as the manual clearly states that the cpu multiplier goes from 6 to 50
It does, nut only if your CPU supports it. The multis on most CPUs are locked meaning you can move downwards but not up.
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Forgive me for being a little slow on the uptake but when I used to over clock computers in the good old days the memory set the fsb speed - I relise today that this doesn't have to be the case as the two can be unlinked and the speeds for each can be set independently. The fsb as far as new was resposible for setting the CPU's speed via a multiplier e.g. fsb 900MHz multiplier of 4 gave CPU clock speed of 3.6 GHz
I only ask as the BIOS reports that I currently have RAM running at 900MHz and FSB of 900MHz and a CPU multiplier of 12.5!
my maths would tell me that 12.5 x 900 = 11.25GHz (an imposibility) but the speed is 2.81 GHz? how is this figure achived?
I only ask as the BIOS reports that I currently have RAM running at 900MHz and FSB of 900MHz and a CPU multiplier of 12.5!
my maths would tell me that 12.5 x 900 = 11.25GHz (an imposibility) but the speed is 2.81 GHz? how is this figure achived?
Well the RAM is actually running at 450Mhz, its DDR2 so its doubled up to get your 900Mhz.
The FSB is quad pumped, for instance a 266Mhz FSB cpu like a E6400 runs at 1066Mhz FSB.
So 266 x multi = cpu speed, in this case 266x8 = 2.13Ghz
The FSB is quad pumped, for instance a 266Mhz FSB cpu like a E6400 runs at 1066Mhz FSB.
So 266 x multi = cpu speed, in this case 266x8 = 2.13Ghz