What performance impact if I'm use 2T DRAM Command Rate instead of 1T DRAM Command Rate in BIOS settings? I'm use Athlon XP 2800+ CPU and VIA KT333 chipset based motherboard and 1.25GB of DRAM.

I'll answer this question yet again (doesn't anyone search the forums first?). Read this.

Interesting article, I have CORSAIR D400 512MX2 VS1GBKIT400 Value Ram (3-3-3-8 T2) set at 2.5-3-3-7 T2 w/448Mhz HT, completely stable on Prime95 and Memtest86 for 24hrs each. I think I will give 2-3-3-7 or 6 a try and then go for a T1 just to see if it will work. Because we all know trying is half the fun

Not as much as A64. It's more of a relative than a performance thing for SocketA.

The general rule for SocketA is for every 5Mhz increase you make up the difference between 1T vs. 2T while the rest of timings are same.

Alright, I read the article, but still, I'm a little lost... T1 and T2 are features of the RAM, or are they settings you configure on the BIOS?

If it is a propiety of the RAM, how can I tell if it's T1 or T2?

You set it through BIOS.

It's decided by the chip used on your RAM.

Say I buy this RAM kit:

http://www.newegg.com/Product/Prod [...] 6820145450

Is that T1 or T2?

At DDR400 you can until around 215Mhz before you have to switch to 2T.

I didn't understand that =/

I'm really noobish when it comes to RAM, please explain yourself a bit better

I meant you can use 1T at DDR400 or below. Once you reach about 215Mhz on RAM you'll have to drop it to 2T to keep things stable.

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