Pentium 4 2.6C overclock with an Asus P4P800 Deluxe now getting low benchmarks.

[Intelman07]

I overclocked this to 216 mhz front side bus to take it to 2.8Ghz roughly. It is at a 1:1 ratio. I have Kingston PC3200 value ram. When I overclock the memory acceleration mode (MAM) is disabled. Will I still see a better performance increase with a faster bus cpu and memory over having mam enabled?

 

[wicktron]

Having MAM enabled helps, however, faster CPU & faster memory will always be better. MAM will be disabled regardless at over 200MHz FSB on the P4P800. There is a workaround that can be found here

 

[Intelman07]

Work around looks complicated

 

[Camofrog]

You may also want to check this out to become a little more familar with PAT, etc.
toms hardware guide here

 

[jhites]

Will I still see a better performance increase with a faster bus cpu and memory over having mam enabled?

The bus speed will impact your total performance even if you have to go with a 5:4 memory ratio.

 

[Intelman07]

Oh well I think I have decided to go with no PAT and a faster FSB and memory at a 1:1 ratio over standard 200Mhz front side bus with PAT.

 

[Intelman07]

One thing that i notice disturbing is even while overclocked..when i bench my memory bandwidth in sisoft sandra against a 865PE (Same chipset as what I have) I get lower scores than what they have it as. Now is this something to worry about or nothing at all?

I get 4468 MB/s bandwidth and 4486 float buffered
They get 4888/4884

 

[Camofrog]

Is that 512mb of Kingston Ram you are using 2x256 sticks ? running dual channel?

If you are using this rig for gaming? i can't believe you are not using 1gb of ram esp with WinXP, otherwise you are forcing it to use your HD swap file and there is now way you HD is going to be faster than your RAM

 

[Intelman07]

It is 2x256MB

 

[Duvie]

Originally posted by: Intelman07
One thing that i notice disturbing is even while overclocked..when i bench my memory bandwidth in sisoft sandra against a 865PE (Same chipset as what I have) I get lower scores than what they have it as. Now is this something to worry about or nothing at all?

I get 4468 MB/s bandwidth and 4486 float buffered
They get 4888/4884

NO!!! They likely are scoring theirs with PAT on and it scores quite well in these synthetic benches you put far too much faith in.....

I mean I can change a few cas timings and turn GAT off on my mobo and drop 300 pretty fast....

 

[Duvie]

400 in sandra may mean nothing in real world apps.....

Have you tried to OC more??? Don't feel compelled to stay with 1:1 when you could likely clock the cpu higher but use a 5:4 ratio...yes those synthetic benches you trust too much may even go lower or not change much but trust me cpu speed far out weighs sandra bandwidth numbers....

 

[Intelman07]

I might do 3Ghz with 5:4. Well I dont really care about synthetic benches, I just had to compare myselft with something. One thing about this 5:4 ratio though is my memory is below 200mhz bus

*Edit* I am at 3Ghz 5:4

 

[jhites]

Originally posted by: Intelman07
I might do 3Ghz with 5:4. Well I dont really care about synthetic benches, I just had to compare myselft with something. One thing about this 5:4 ratio though is my memory is below 200mhz bus

*Edit* I am at 3Ghz 5:4

You should try to set the vcore @ 1.575-1.60v and the memory voltage to 2.75v with a fsb of 247Mhz. This would give you a 3.2Ghz with DDR400 and is quit common overclock for a 2.6C cpu.