Originally posted by: fritzfield
So...
Running a 2GB DDR2-800 in 1st DDR2 slot, only 1 stick: BIOS recognizes 2048MB in slot and 2048MB of memory.
Running a 2GB stick in DDR2-slot-1 and a 1GB stick in DDR2-slot-2: BIOS recognizes 2048MB in slot 1 and 1024MB in slot 2, but a TOTAL memory of, again, 2816MB (as with 2x2GB sticks).
Running DDR-2 667 or Memory voltage on low, has NO effect.
Running at stock FSB, i.e NO OC, has NO effect.
I would say that, for now, without a BIOS update (if it is even possible) 2816MB of RAM is the MAX. The best configuration, to max out RAM, is 1 x2GB and 1x1GB. In order to run more RAM under 64 bit OS, you would need a different board.
Yep, thats basically what I read before IIRC, except that part with the extra 816mb of ram. (maybe thats an increase in the later bios releases)
What kind of scores are you getting in Sandra memory bandwidth benchmark ? I'd be interested in 1 2gb stick installed and with 2 2gig sticks installed.
I have 2 of the Adata pc6400 (the cheapest $18.99 a gig, 1.8v w/ no heatsinks, I love them) 1gb sticks. With 1 stick installed, my best scores were using 4-4-4-12, 4:5, at ddr2667, with about 4700mb/s. (1 stick installed, ddr2 533, 3-3-3-9 2T score is about 4100mb/s) Now with 2 sticks installed, my best scores are at ddr2 533, 3-3-3-9, 1:1, with about 5700mb/s. This is e2180 at 280 X 10. (2 sticks installed, ddr2 667, 4-4-4-12 2T score is about 5100mb/s)
Thats why before I couldnt duplicate the Anand tech scores at ddr2 533, I had only 1 stick at the time. (I bought 1 at a time instead of the the pair, just to test)
So in conclusion, with just a 1 gig stick installed, ddr2 667, 4-4-4-12 2T, 4:5 is best.
With (2) 1gig sticks installed, ddr2 533, 3-3-3-9 2T, 1:1 is best.
The performance figures reverse with 2 sticks installed, go figure.