I don't know where some people are getting 2x512 SP kits, but I cannot find them. I also cannot find the pc3500 model, but I guess those ones are all overseas?
Anyways, I just spent about 2 hours on my TwinMOS. I decided to test them individually, and I did this at the 3.5v setting, which my DMM says is 3.56v. One stick did 260fsb at 2-2-6-2-9-12 etc, but would error LOTS at 265... it took me a while to tweak it to 260, so I didn't bother to try to push 261-262. The other stick was erroring at 260, so I set it to 257 and it was fine (maybe it could have hit 258). I didn't feel like spending TOO MUCH time, so considering I knew which stick was better I tried the better stick in dimm2, and the other one in dimm4. It turns out I get less errors when I reverse them, where the better stick is in dimm4, and the worse one in dimm2 (both orange).
Okay, so I have a bios savior and it has 510-2 bios and 510-3 bios. In all honesty, I'm not sure which one I'm on, and have NO CLUE how to know which is which (is there a way?). I am 80% sure that I'm on 510-2. Alright, so I set my fsb to the lesser value of 257 (since the weaker ram did that memtest #5 and #8 stable). I kept getting errors, and so I kept changing values in the BIOS.
I finally got it MEMTEST stable at 257fsb. How? Simple... all I had to do was change Trwt from the default value of 03 to 02. I was so dumbfounded. I thought that 03 would be easier on the ram, and that 02 may have been too tight, but WOW what a difference!!
Here are my current settings on ORANGE dimms, although I'm still tweaking as we speak (remember, I put the better stick in dimm 4 (closest CPU) and the other in dimm 2):
257fsb 1:1 @ 3.5v setting with +.03 OFF (DMM reads 3.56v at checkpoint above dimms)
**Re-editted**
CPC On
2
2
6
2
9
12
2
2
2
2
3120
1
Enabled
Increase (was Auto)
0
Level 7 (was 8)
Level 3 (was Auto)
Auto
Fast
Auto
256
Disable
16x
7x
Disable (8 Bursts)
I think that changing the strenghts (level 7 and level 3 now) is what helped out with test #8. I think that MAYBE those are critical in order to pass test 8. In any case, I could not get super PI stable. Memtest was clear, but Super PI wouldn't run. I have gotten my cpu to do 299x9 memtest/prime stable before with TCCD at 1.55v. I tried out 257x9 at that same voltage and super PI still couldn't pass. I'm assuming that it's the memory controller, unless the ram just can't pass in windows. For some reason I actually want to blame the memory controller for once. All UTT hit a wall around 255ish... this one I spent a lotta time on to get memtest stable at 257. My TCCD couldn't do more than 275 2.5.3-3-7, even though individually they could hit 290s. You guys think it's the mem controller?
**Still tweaking btw...**
Going to bed now... got work in the morning, but before that I have to change my brakes on my car, AS WELL AS THE MUFFLER!
Gonna be a long day... wish me luck.