Overclocking P4 2.6 (800)

greenjizz

Distinguished
Aug 15, 2003
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When I buy my P4 2.6 (800) I want to OC it ti 3.2ghz. Now someone told me that they have the same setup as me but only run PC3500 RAM at like 1025FSB. When I posted this question on some other forums people are telling me in need PC4000 at 1000FSB. My question is who is right or are they both right. And what are the advantages/disadvantages of both and is it worth it to fork out $150 more for PC4000 RAM.
 

scottchen

Splendid
Jun 3, 2003
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Just use 5:4 memory ratio.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Gold 2x256 3700EL memory @ 256mhz 2.5-3-3-7 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU
 

Crashman

Polypheme
Former Staff
You can run your 2.6 at 3250MHz using a 250MHz bus. Now, that requires you to EITHER use a 5:4 CPU:RAM ratio (resulting in PC3200 speed of 200MHz for the RAM), OR use PC4000 at full speed.

You'd get better performance from the system using the memory at full speed, but I doubt your PC3500 will overclock that high. So now you're back to running it asychronous, 200MHz (DDR400), using the 5:4 ratio.

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scottchen

Splendid
Jun 3, 2003
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25,780
PC3500 rams which brand is it?

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Gold 2x256 3700EL memory @ 256mhz 2.5-3-3-7 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU