Which P4 for overclocking?

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OC_GORK

Limp Gawd
Joined
Oct 19, 2002
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148
Im torn between a 2.6GHz Northwood for a high FSB, or a 3.0GHz NW for high MHz, or maybe a prescott would be better? Ill be watercooling whichever i get...

Should i get an Abit IC7, or pay the extra $$$ and get an ASUS P4C800-E Deluxe?
 
Either the abit or the asus will do just fine. If you have good ram then I would be gunning for the 2.6. If you don't have good ram then I'd say go with the 3.0
 
okay... i do feel like saving, so if both boards OC as good as the other i guess IC7 i sthe way to go... but im still not sure about the CPU, how high do you think each of them will OC?
 
as you see in my sig, i have the 3.0, running it at 3.3 on air, doesn't reach above 46C on heavy loads, so watercooling u can notch that off and save some money and then go with the 3.0 and use air and get 3.5 no problem with air and save the money that way, i also spent an ass load on memory so that could be something to consider, just trial and error and RMA
 
Originally posted by OC_GORK
judging from the OC database @ overclockers.com it looks like i could hit [email protected] or [email protected] DO you think theese numbers are realistic?
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On average i wouldn't expect more then [email protected] and 3.0 @ 3.5-3.6. If you get higher then great. Not many people get 3.8Ghz on aircooling.

I would actually get the 2.8GHz Northwood myself. It has the best price/performance ratio and you should be able to net 3.5Ghz or higher.
 
Originally posted by subscience
I recommend the 2.4, 2.6 or 2.8.

But the best P4 for overclocking? The 1.6A. :)
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My 1.6a still hums along 24/7 at 2.4ghz, 2.7ghz was good enough for a screenshot. On a pos gigabyte 8iexp board even. :eek:
 
yeah I had a 1.6a that did 2.4 easy too... but mobo maxed out at 150FSB.

ANyway, back to the point... go for the 2.8C kinda in between. You should get a decent clock and FSB hopefully.

The price is so close between the 2.4, 2.6 & 2.8's now. just go for the highest and see what it will do. Plus I've seen quite a few people with nice clocks like 3.5 out of their 2.8C's
 
When overclocking the P4s (2.4C, 2.6C, 2.8C), how much of a boast can one get on air if using some standard PC3200 memory like from Samsung? I have read that Samsung makes good memory for overclocking video cards, but what about their PC3200 memory?
 
Well, the best thing out there for overclocking is Bh-5 ram. I think the highest quality Bh-5 that you'll find is that off of mushkin's. Good luck finding it and you'll also pay a boat load.
 
you can OC fine with generic 3200... just use the ratios as you go up. I'm using the 3:2 ratio at 300FSB = 200Mhz ram perfect for 3200.
 
Originally posted by chrisf6969
you can OC fine with generic 3200... just use the ratios as you go up. I'm using the 3:2 ratio at 300FSB = 200Mhz ram perfect for 3200.
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So, with a 5:4 ratio for a P2.4C, that would be 3.0Ghz, correct? If I have researched correctly, doing this would require locking the AGP bus speed in the BIOS. But there must some tradeoffs using the ratios with the memory, aren't there?
 
Originally posted by mfm
So, with a 5:4 ratio for a P2.4C, that would be 3.0Ghz, correct? If I have researched correctly, doing this would require locking the AGP bus speed in the BIOS. But there must some tradeoffs using the ratios with the memory, aren't there?
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2.4c @ 250fsb = 12 *250 = 3000MHz

250fsb * 5/4 = 200MHz = DDR400

Set AGP/PCI to FIXED 66/33
 
mfm if you're wondering what the speeds are they are all math equations. I spent a night figuring out all of the possible solutions along with dividers when I was thinking about purchasing a p4 system.
 
About the MEM Dividers you need to multiply 200 by the divider to see how high you can put the FSB with that divider.

Example: 200*(5/4)=250 fsb
200*(3/2)=300 fsb
or if you had PC2700 RAM
Example: 166*(5/4)= 207.5
166*(3/2)=249

So if you had PC3200 RAM you need the divider to be set at 5:4 in order to push the FSB to 250 or if you had PC2700 RAM you need to set the divider to get you 250 FSB. Of course benchmarking shows that a P4 2.4c with PC3200 using the 5:4 ratio get beat by a P4c3.0 with PC3200 using the 1:1 ratio. Moral is you want to run your MEM the same mhz as your fsb using the 1:1 ratio. If you haven't gotton memory yet I suggest you look into getting memory that is rated at least PC4000. With a P4 2.4c and PC4000, you will be able to run your mem the samer speed as the FSB using the 1:1 divider. Plus this will give you more bandwidth which in theory should outpace a P4c 3.0 using PC3200. I hopes this helps. Also the stock HSF should do the trick but I suggest getting a better HSF if you want to keep things cool but in case you dont have the cash the stock HSF should get you like 48c idle and 60c load.
 
Originally posted by Arkanian
Of course benchmarking shows that a P4 2.4c with PC3200 using the 5:4 ratio get beat by a P4c3.0 with PC3200 using the 1:1 ratio. Moral is you want to run your MEM the same mhz as your fsb using the 1:1 ratio.
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I think this is sort of the information I was looking for. I understand, given a specific ratio and processor, what the resulting output will be. The math isn't the problem. I was mostly curious if there were situations where a 2.4C @ 5:4 (3.0Ghz) would actually be worse than just running the 2.4C stock @ 1:1 (2.4Ghz).
 
No I was just saying that a P4 2.4 o/c with PC3200 using 5:4 gets outpaced by a P43.0 DDR3200 using 1:1. A P4 2.4 o/c with PC3200 using 5:4 will still beat a P4 2.4.
 
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