Asus P6T Deluxe Discussion Thread

[Amurtigress]

@amurtigress
I dunno, i never had GA's mobo before. Maybe you should ask mr. Bluntsmoker for this..
But we human, tend to be greedy,don't we? So it would be nice to have those two option in our beloved p6t series....do you agree?

Oh,btw..since you mention it. Will you tell me what is the optimal number of B2B CAS for 8-8-8-21@1600mhz..is there any formula for this option? Or maybe "auto" is good enough?

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@all
Anyone care to tell me, the absent of <1.8v (on cpu pll) is caused by hardware limitation or it's only matter of time for us to have it in the future.

Hi E-crush

I found out that B2B CAS delay is commonly used by the few who know about it to increase stability on their RAM. Rule of Thumb: The higher the value, the more stability you usually get. My Corsair XMS3 modules have it programmed to 0.

Some testing showed me that along with the increased stability, if notable at all, you will lose bandwidth.

0-4: No decrease, hardly measurable.
6-8: Minor decrease
12: Memory bandwidth decreases to what you'd expect of a dual channel system. About 6-8 GB/sec

I am using a value of 4 these days.

I read some newer ASUS S1366 board has the value set to 12 fixed. I think it was in an article on the Rampage II Gene or so...I seriously wonder if that board loses bandwidth just as dramatically.

CPU PLL voltage:
There are two possible scenarios: The voltage controller chip for the PLL uses Voltage ID pins controlled by the BIOS. However, I cannot tell if 1.8V is the lowest that it can be programmed to, or if only the BIOS alone is preventing us from setting lower levels.

Second possibility, the analog part "Behind" the chip can be manipulated by adding a resistor to decrease the voltage by 0.2V or so, so 1.8V would refer to 1.6V on the board.

Either way, we are left guessing.