Originally posted by: Duvie
I found that tweaking cas timing was key....cas 2 is great, but often times to run tight cas 2,2,2, or 2,3,3, timings you have to be between pc3000 to pc3500 levels only....So if you can get cas 2.5 to run at pc3800-pc4000 levels you may actually do better cause the bandwidth will be much higher....
I was testing 9x296 for 2664mhz....I was at cas 2.5,3,3,6 and though I had found my ultimate stability and score...
time: 28:12 seconds.....
Then I downgraded my bios from 1.51beta to 1.41mod (seeing a comment about it being the best for TCCD ocing....
Time: 28:05 bandwidth in the 7200-7100 range
Now while I couldn't get 2.53,3,5 stable before this time it was.....with the 1.41mod bios that is...
http://home.comcast.net/~duvie23/A64-superpi-9296-2664-166-2.5335.JPG
Time: 27:54 bandwidth hasn't changed.....
Then I said well that is the lowest timings I can go...no 2.5,2,2,x will work....So I am think to myself I am at a 166 divider now...I know I can't do 200 but It would be nice to have the memory go faster...In comes a nice app called A64 tweaker and the very nice 183 divider!!!! Now I noticed the app didn't like a whole lot of tweaking the already pretty low cas trcd, and others....
I switched to 183 which should raise memory speed....it did but obviously 2.5,3,3,5 may not be stable...I actually found no go on 5....6 finished but didn't seem that fast and memtest confirmed errors....7 finished no errors...
http://home.comcast.net/~duvie23/A64-superpi-9296-2664-183-2.5337.JPG
This is where conventional wisdom goes out the door I guess...I actually tested 2.5,3,3,8 with all other settings the same...
http://home.comcast.net/~duvie23/A64-superpi-9296-2664-183-2.5338-141mod.JPG
record time 27:28.....I tried 9 and got better then 7 still but not better then 8....