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1T Memory timing on A8N deluxe

post #1 of 7
Thread Starter 
When I raise the clock speed of my PC4000 memory to around 250Mhz the 1T timing seems to make the system unstable. Is there a way to make it stable, as 1T is quite a bit quicker than 2T?
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post #2 of 7
Unfortunatley not. The Asus A8N dosen't like 1T over ~240MHz. The only way you can run a high HTT overclock and keep 1T is to run a divider and force the RAM to 200 or so
post #3 of 7
Thread Starter 
Thanks for the reply. That is what i thought. Do you think it would be better to drop the clock speed to around 230-240 and keep 1T or OC the memory to 250-270 and use 2T??? How important is 1T?
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post #4 of 7
Some people say 1T is important, some say it doesn't matter. I'd say its not that important. If you want to squeeze the very last ms from a Super Pi run, then 1T may make a little difference but for everyday use it won't show. I like to stay 1:1 than use a divider, so I use 2T. It varys, you have to test your system to see what difference things make. Its generally a toss up between high HTT @ 1:1 and looser timings (and 2T on the A8N) or high HTT with a divider and tighter timings (and 1T).
post #5 of 7
Command of 2T won't effect real world apps much... the loss in synthetic benchmarks don't relate to the actuall effect in real applications so I wouldn't woory about it!
    
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post #6 of 7
On every test I have ever done, Bandwidth wins out over tighter timings. If you can only get a small increase in mhz with 2t(you will have to test it) then stick with 1t. If it lets you get a bigger increase in speed then it will out perform the tighter timings.
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post #7 of 7
Thread Starter 
At the moment I have the CPU at 2.86Mhz (10x286) and the RAM at 239.4 (3-4-4-8 and 1T). This performs well on the benchmarks and at relatively low voltages (1.44 and 2.7). I tried changing the CPU to 2.84(11x255) with no divider to give the RAM a speed of 260MHz (3-4-4-8 and 2T) and at the same voltages the whole system became a lot less stable. How would I make this more stable? Should I increase Vcore or Vram or both?

Also, if I stuck with the stable setup and changed the timings to 3-3-3-6 and 1T, would increasing the voltages make the system more stable?
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