Does this seem right? (p4 2.4c OC question)

[Junin]

I just built a new computer, and I'm wondering if this is right.
The system is as follows: P4 2.4c @ 2.88ghz, Corsair Value series PC3200 ram, Asus P4P800 Deluxe motherboard.

CPU-Z reports my RAM frequency as 160mhz when I overclock to 2.88ghz. But the guy here shows 440 at 3.3ghz also with PC3200 ram.

Also, is it normal for my cpu/mobo/ram combination to be unable to hit the 30% Overclock that the Asus bios offers?

 

[Junin]

bump

 

[Lyfer]

You're milage may very.


Try doing this: make sure your pci/agi are lock of course, set the fsb/ram ratio to 5:4, set your FSB to 250MHZ. This will allow your cpu to run at 3ghz with a 1ghz fsb and having your ram running in spec at DDR400.

 

[Junin]

Is it safe to run at 3ghz on stock cooling?

 

[GtPrOjEcTX]

oc is never truly "safe", but then that all depends on your definition of safe.

 

[boyz]

When you OC you need maxmium cooling, Besides OC is a waste of time and it only shorten the life span of your pc unless you don't give a damn

 

[oldfart]

Originally posted by: Junin
I just built a new computer, and I'm wondering if this is right.
The system is as follows: P4 2.4c @ 2.88ghz, Corsair Value series PC3200 ram, Asus P4P800 Deluxe motherboard.

CPU-Z reports my RAM frequency as 160mhz when I overclock to 2.88ghz. But the guy here shows 440 at 3.3ghz also with PC3200 ram.

Also, is it normal for my cpu/mobo/ram combination to be unable to hit the 30% Overclock that the Asus bios offers?

If CPUz shows 160 MHz mem speed, you are running a 3:2 mem ratio.

12 x 240 = 2.88 GHz
240 1:1 = 240 (DDR480)
240 5:4 = 192 (DDR384)
240 3:2 = 160 (DDR320)

Change your mem ratio to 5:4 on that setup.

 

[awolkoff]

12 x 240 = 2.88 GHz
240 1:1 = 240 (DDR480)
240 5:4 = 192 (DDR384)
240 3:2 = 160 (DDR320)

Change your mem ratio to 5:4 on that setup.

Oldfart, can you tell me the formula used to run these calcs?

TIA!

ASW

 

[sman789]

Originally posted by: awolkoff

12 x 240 = 2.88 GHz
240 1:1 = 240 (DDR480)
240 5:4 = 192 (DDR384)
240 3:2 = 160 (DDR320)

Change your mem ratio to 5:4 on that setup.

Oldfart, can you tell me the formula used to run these calcs?

TIA!

ASW

i'm guessing the asus board automatically changed the ratios for him but
the memory ratios used with the new p4c's and at least pc3200 is 1:1, 3:2, 5:4
the stock p4c is 12 x 200 fsb. thats running sync with ddr400.
its cpu fsb speed multiplied by the ratio (1:1=1) (5:4=.8) (3:2=.667)

so for i.e. cpu 250 fsb X .8 = 200 for ram (ddr400)

 

[GtPrOjEcTX]

Originally posted by: awolkoff

12 x 240 = 2.88 GHz
240 1:1 = 240 (DDR480)
240 5:4 = 192 (DDR384)
240 3:2 = 160 (DDR320)

Change your mem ratio to 5:4 on that setup.

Oldfart, can you tell me the formula used to run these calcs?

TIA!

ASW

240 1:1 = 240 (DDR480) 240 / 1 * 1 = 240
240 5:4 = 192 (DDR384) 240 / 5 * 4 = 192
240 3:2 = 160 (DDR320) 240 / 3 * 2 = 160

 

[Tom]

Originally posted by: Junin
Is it safe to run at 3ghz on stock cooling?

It's pretty safe. Have you adusted the vcore setting in your attempts to overclock ? Sometimes an extra .025 or .050 volts will get you to the 30% you are looking for. Just be careful not to overdo it. And the more vcore you need to use the more important cooling is.