T2 to T1, system won't boot

[ferzan]

Hi,

I just checked AMD 3800+ overclocking guide. I'm fairly new to whole OC thing but I managed to get a good performance out of my system. But while I was strugling with bios options I realized that setting my Ram to 1T as recommended on the guide locks the system up and I had to remove the battery from mainboard to return to old bios and boot the system.

I don't know much the difference between 1T and 2T but from what I understand 1T improves systems performance while 2T impoves stability.

Can anyone point me in the direction on what has to be done?

I have 4 gig of ram, 3800+cpu and msi motherboard

thanks

[DMB2000uk]

You'll have to leave the setting at T2 im afraid.

The T1 setting decreases the amount of time the CPU waits to access the RAM, but with that much RAM the CPU memory controller cant handle it that fast. You shouldnt be losing out on that much performance with that much RAM anyway.

Dan

[Apoptosis]

Running 4GB of memory and hitting 1T is nearly impossible to do. I tried to run 4GB of memory at 1T in this article without luck: http://www.legitreviews.com/article/347/1/

With no overclocking on the system and running 4GB of memory on our AMD AM2 4800+ processor we were able to get over 9GB/second of throughput on the test system. We were unable to run anthing tighter than 3-4-3-9 2T and even went up to 2.5 Volts on the memory trying to get the Command Rate down to 1T instead of 2T without success. With 2GB of memory we are able to hit 3-3-3-8 1T, while with 4GB we were limited to 3-4-3-9 2T. Still impressive that 4GB of memory at agressive CL3 timings is possible.

So to anwer the question about 4GB of low latency memory on an AMD AM2 memory controller -- It is possible, but more than 2.4V is required and a command rate of 1T seems to be out of the question.

[ferzan]

thaks guys, your answers are very informative. I'll play with memory timings a bit see if I can increase my systems performance a bit