1T Memory timing on A8N deluxe - Overclock.net

rustynator · 01-22-06

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?

*muffin* · 01-22-06

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

rustynator · 01-22-06

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?

*muffin* · 01-22-06

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).

**The Duke** · 01-22-06

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!

busa · 01-22-06

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.

rustynator · 01-22-06

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?

01-22-06	#2 (permalink)
muffin plain lazy Join Date: Jul 2004 Location: l'Angleterre Posts: 5,170 FAQs Submitted: 2 Hardware Reviews: 3 Trader Rating: 10	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 __________________ Nikon D90 + D40x / 18-55mm DX / 18-105 DX VR / 55-200mm DX VR / 50mm AF f1.8 / 70-210mm AF f4-5.6

01-22-06	#4 (permalink)
muffin plain lazy Join Date: Jul 2004 Location: l'Angleterre Posts: 5,170 FAQs Submitted: 2 Hardware Reviews: 3 Trader Rating: 10	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). __________________ Nikon D90 + D40x / 18-55mm DX / 18-105 DX VR / 55-200mm DX VR / 50mm AF f1.8 / 70-210mm AF f4-5.6 Last edited by muffin : 01-22-06 at 08:10 AM

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1T Memory timing on A8N deluxe

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