8K7A Revision Questions

Ok. I currently am in possession of an 8K7A Rev1.0 and an 8K7A Rev1.1. There is only one difference that I can tell. While the heat sink for the north bridge remains the same, the fan has changed. The Rev1.0 has an AAVID fan, while the 1.1 has a Coolermaster fan.

Other than that, I'm noticing some differences in my overclocking abilities. I assume the difference can be attributed to one of three things. The differences are as follows:

The Rev1.0 had the July BIOS installed, where the 1.1 has the August BIOS.

I have a different processor -
Before
A1400AMS3C
AYHJA0123MPMW
K0073650175

Now
A1400AMS3C
AYHJA0125FPCW
Y6497930349

And also - the difference of the fans.

For some reason (although I have not changed RAM), my system is running stable with a 145mhz front-side bus now. (I've run Sandra CPU, CPU MM, and the memory benchmark. Then I ran the burn-in wizard with CPU, CPUMM, and Memory for 10 loops. Then I ran 3dMark2000 and 3dMark2001) Perfectly stable throughout these tests.

Before (With the Rev1.0) I could not even achieve a fsb of 140mhz reliably. I would experience a crash in Sandra's memory benchmark.

Does anyone have an ideas why this would be so? I'll post my full specs.

AMD Athlon T-Bird AYHJA (K before, Y now) @ 1.85v
512MB (2 x 256mb) Crucial PC2100 @ 2.5v
Toshiba 16x DVD-ROM
TEAC 1.44mb 3.5" floppy drive
Fong Kai 320ATX case (with their standard 300W PS)
SBLive! X-Gamer 5.1
ASUS V8200 "Pure" GeForce3
Western Digital WD800BB (80gig, 7200 RPM, ATA100)
Samsung SyncMaster955DF
Klipsch ProMedia 5.1 500w Speakers

Any ideas? I have no idea why it would change so suddenly, and so drastically. I'm talking about a 10mhz SOLID increase in fsb.

Probably some little changes, a resistor here, a capacitor there. I know one thing, therei is a little resistor at the QA6 location, I think its around the AGP slot, that should be removed on the 1.1 rev. This supposedly caused problems with the board with a printer was connected to the parallel port.