228 x 8.5, Air cooled, no mods, and a question

[mluckey]

This is the deal...

First off, my setup is air cooled (the second setup in my sig).

After a Windows reload without APIC enabled. I stabilized the system at a couple of different points. It can now run stable at 228 x 8.5 without mods, to include gaming in UT2004. I can use higher multipliers, but the vCore needed to stabilize is insane (2.2 vCore at 228 x 9.5). The room is non-air conditioned, so this may play as an issue, but temps never went over 54 C. at any time for the CPU, and chipset temps never went above 30 C. The accuracy of motherboard monitored temps is never good, so 56 C. was my pre-set limit.

The Power supply reads 11.83, 4.91, and 3.47 volts under max load with few fluctuations. The vCore after the first second or so doesn't fluctuate under max load hardly at all.

All this time I though that my non-matched RAM was the issue, but apparently it's cooling, or something that I'm missing. What gives? Is the Barton die that much smaller? Is this normal for those with a setup like mine?

[$0m#0n#]

lol, U r giving it 2.2V at 2166Mhz, even the worst 2500+ will make it under 1.9-2.0V, did u try 2 give it first 1.5-1.6V?

[mluckey]

Yeah, but no post under that voltage at all:(

At 200 x 13, I can stabilize the CPU at 1.85 volts actual, for all-day gaming. At 200 x 12.5, I can stabilize at 1.78 volts actual.

I have run SANDRA and Super PI at 2.7 GHZ with this same CPU at 200 x 13.5 at 2.10 volts. I never Prime95, or 3D tested it at this level (too hot).

It's odd to me that a CPU that can run at 2.5 GHZ without a hitch at 1.78 volts, can't run over stock speed at 228 Mhz FSB without serious juice:confused:

[$0m#0n#]

I would try 220*11@1.7-1.8V, if u dont have a Prommy dont give it over 1.9-2.0V! U ll kill it.

[Kinsy]

You HAVE done the L12 mod havent you?

[$0m#0n#]

and I forgot try some modded bioses, it ll help U!

[mluckey]

No mods to this board or the CPU (removed L-12 mod), I can run at 215 x 11 @ 1.93 vCore in BIOS without a hitch. It just seems that the voltage required goes up exponentially after 213 Mhz FSB.

As for the L-12 mod. It gave me nothing to set it at 200 Mhz FSB. Nada, zip, squat. All it did was make me reset the BIOS, reapply HS compound, and make me a new set-in time of two hours. more importantly, all that time was taken away from summer hammock sleeping and beer drinking:D

Does anyone know if increased RAM frequency feedback (it's double-sided 2 x 512mb modules) would require more RAM/CPU juice to stabilize? Although the RAM is Memtest86 error free all the way to 225 Mhz FSB at 2-2-2-11, it is NOT matched. Perhaps feedback is causing noise.....Is there a way to boost signal strength, like on my Kr7A-133? At this point it couldn't hurt. My goal is simple....set and forget at 218-220 Mhz FSB at a reasonable multiplier (over 2.3 Ghz) and a resonable vCore and temperature.