My P4 1.6A results, Air cooled

aarona · Feb 28, 2002

<A HREF="http://aarona.50megs.com/photo.html" target="_new">http://aarona.50megs.com/photo.html</A>

I put up some jpegs of my project. It is air cooled using a modded Alpha 8045 to fit the Intel 478 mounting mechanism.

Edited by aarona on 03/01/02 10:51 AM.

FatBurger · Mar 1, 2002

What motherboard?

Quarter Pounder Inside
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aarona · Mar 1, 2002

It's an Abit TH7II-Raid. It has A "K" sticker on the last PCI slot and an "AC2001" sound chip. It also came with the "38" version BIOS. RDRAM clock generators are ICS9212-03. The RDRAM is two 8 piece single sided 256Mb Samsung Modules.

FatBurger · Mar 1, 2002

Damn you! I've got a better BIOS and RAM than you, and I haven't been able to get that high yet.
Email me if you want the other BIOS, gives you up to 1.85v for your Northwood.

Quarter Pounder Inside
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aarona · Mar 1, 2002

well, don't give up.
Did you downgrade your bios from 38. There is a special note on that for a procedure at the Abit web site.

FatBurger · Mar 1, 2002

Why would I downgrade my BIOS? Mine is dated 12/4, just like 38.

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aarona · Mar 1, 2002

I heard the bios was a mod, just not the date so I guess that's not your problem overclocking.

FatBurger · Mar 1, 2002

No, it's an actual BIOS from Abit, just not a publicly released one.

Quarter Pounder Inside
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Grizely1 · Mar 3, 2002

is your pci/agp bus 39/78mhz? or does the abit board cut it again at 150MHZ? if not how are your cards doing at those speeds, is it perfectly stable??

DO NOT LIGHT YOURSELF ON FIRE

FatBurger · Mar 3, 2002

The TH7II-RAID can lock the AGP and PCI busses so you don't go out of spec (or at least not too much).

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aarona · Mar 3, 2002

Yes It's stable at 150 FSB but the memory scores are worse than 133FSB because the memory is at PC1066 at 133FSB.
Now I may do a voltage mod for the vmem. I have read somewhere that an increase to 2.7v vmem will give a chance to hit beyond 135FSB with the mem at full speed, which seems to be my current limit. I already know this processor can run upto 156FSB so I would like to try for PC1200mem at FSB 150.

Grizely1 · Mar 3, 2002

how much worse? not too bad i would imagine.

also , if i put a 150/155 MHz FSB on a 1.6 (give me around 2.5GHz with my watercooler), what would the PCI/AGP bus run at??

DO NOT LIGHT YOURSELF ON FIRE

aarona · Mar 3, 2002

It'll be locked at 33/66. No worries.
Mem scores:

@2.4=......3215/3211
@2.5=......3328/3314
@2.133=...3353/3349
@2.167=...3431/3422

Grizely1 · Mar 3, 2002

so all in all 2.5 would provide the most performance....

DO NOT LIGHT YOURSELF ON FIRE

aarona · Mar 3, 2002

Yes, but I needed to go to 1.9v vcore. With watercooling you may reach it at a little lower vcore. Also I'm looking into upping my vmem to go higher with max memory settings. From my research so far 2.7vmem is what to shoot for.

AMD_Man · Mar 3, 2002

I'm curious as to what Power supply you are using. I would imagine that you would need a beefy PSU to be able to reach these ultra-high clock speeds. This might be something to consider for people who want to buy a P4 and overclock it. I have a 430W Enermax myself, so I think I'll be fine if I decide to go the P4 route.

AMD technology + Intel technology = Intel/AMD Pentathlon IV; the ULTIMATE PC processor

aarona · Mar 3, 2002

Yes, I have an Enermax 450 which is an actual 431 watts. I have actually read a lot of bad things of the 3 and 5 volt rails dropping on these, but I haven't experienced that at all.

AMD_Man · Mar 3, 2002

Yes, I have an Enermax 450 which is an actual 431 watts. I have actually read a lot of bad things of the 3 and 5 volt rails dropping on these, but I haven't experienced that at all.

That only happens with the Athlon. The P4 uses the 12V rail, but the Athlon uses the 5V rail.

AMD technology + Intel technology = Intel/AMD Pentathlon IV; the ULTIMATE PC processor

My P4 1.6A results, Air cooled

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