# Newbie Question

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my setup

asus p4p800

p4 2.8c

geil ddr 400 ram

is it true that I can not overclock my system becasue my ram is not any faster than pc 3200?

I had though it was as simple as going into the bios and pressing the plus key to overclock 10%-20% etc....

This is what I read that confuses me.

"Let's first take a look at the different models of pentium 4's.

A - 400 MHz FSB 100 (CPU Frequency) X 4 (Quad Pumping) = 400 MHz FSB

B - 533 MHz FSB 133 (CPU Frequency) X 4 (Quad Pumping) = 533 MHz FSB

C - 800 MHz FSB 200 (CPU Frequency) X 4 (Quad Pumping) = 800 MHz FSB

So in order to run a Pentium 4 A (Before Overclocking) your DDR must be able to run at 200 MHz, respectively (100 (CPU Frequency x 2 (DDR)). In order to run a Pentium 4 B (Again, before Overclocking) your DDR must be able to run at 266 MHz, and with a Pentium 4 C, 400 MHz.

PC2100 = 266 MHz DDR

PC2400 = 300 MHz DDR

PC2700 = 333 MHz DDR

PC3000 = 366 MHz DDR

PC3200 = 400 MHz DDR

PC3500 = 433 MHz DDR

PC3700 = 466 MHz DDR

PC4000 = 500 MHz DDR

For instance if you wanted to overclock your Pentium 4 2.8 C Chip, you must know that you need DDR above PC3200 because PC3200 only (without counting overclocking) supports 400 MHz (200FSB x 2)

14 x 200 = 2800 MHz

4 x 200 = 800 FSB

2 x 200 = 400 MHz DDR "

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First off...Welcome.

Now...

is it true that I can not overclock my system becasue my ram is not any faster than pc 3200?

No. Your RAM is running 400MHz right now. You could OC your system on a divider that would "under-clock" your RAM, that allows you to run higher FSB speeds.

had though it was as simple as going into the bios and pressing the plus key to overclock 10%-20% etc....

OC'ing is alot more involved than that. You can't just go in and start jacking your FSB up, it has to be done in steps and with care. Vdimm voltages, AGP/PCI freq, ram timings...they all come into play when OC'ing, and you need to know what each one does.

You may wanna do a little more research before you start OC'ing, a good understanding will go a long way.

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You can also OC your Mem, but Geil aint gonna get any higer then 220mhz, i got same as u...

Or you can raise your Multiplier from 14 to 15 x200 = 3000mhz

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yes I understand you can't just start messing with stuff as I already had to replace my MB once.

When I get it back I want to make sure I do things right.

Do you guys suggest overclocking from the BIOS or within Windows.

Also the person told me to read more any specific sites or links that you would suggest reading?

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Stricktly BIOS for me ^_^

As for readings... check out the guides and pinned topics here in the forum.

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Or you can raise your Multiplier from 14 to 15 x200 = 3000mhz

P4 = locked multi

I would read the OC guide here, it has some very good info. If you have any specific questions, or something doesn't go right...just let us know. We're all here to help.

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stick to BIOS for your overclocking goodness i don't think there's any one on this site that uses windows for overclocking their CPU

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stick to BIOS for your overclocking goodness i don't think there's any one on this site that uses windows for overclocking their CPU

actually, i read that nuclear used clockgen to finish off his newest oc.. which is friggin awesome

so its not entirly true

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yes I am back chillin

I would love it if someone with the same setup showed me there numbers.

IF you are using Geil Ram and an Asus board I would love some recomendations for some settings.

pm me?

Edited by u-ray

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no geil ram, but I am running the p4p800, a 2.8c and pc3200. Check out my sig for all the data. Oh, and that 5:4 is the FSB:RAM ratio. So my ram is effffectively running at the stock 200mhz. You'll prolly need to do that above 210fsb. Feel free to ask any questions you have about my rig.

most important BIOS setting for OCing = Lock agp/pci bus to 66/33!!!

Edited by xtry51

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3DMark03 - 6563

that is awesome I wont have my replacement board for another week so Ill have to wait to try out those settings but dang 6563 that is awesome. I was hitting only 4100 with a 9700 pro ocd using VGA cooler and turning up FSB by 15% on my processor.

Edited by u-ray