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2048 MB Corsair TwinX XMS2-6400 DDRII 800 MHz

post #1 of 5
Thread Starter 
Hi guys. I just bought new Corsair TwinX XMS2-6400, inserted in Asus P5WD2-E Premium motherboard with D930 CPU. I am looking for limits of these modules. They are designed for 5-5-5-12-1T timings (also on their label), but my motherboard detected them as 5-5-5-18 (so I set it manualy to 5-5-5-12 in bios, right?). I did some tests without OC and I got these results (200 FSB, 1:2): Sandra RAM 5133/5128 MB/s, PCMark05 RAM 4063.

I would like to ask u where I can set 1T (or 2T) in bios, because I dont see there any settings. And another thing, what is "Write recovery Time" ? I can define the number of clocks for it in bios... I noticed some guys overclocked these modules to 925MHz with 5-5-5-12 timings. I wanted to find best timings possible by memtest56, but when I want to configure timings there, I got a message my chipset is not supported (yes I have the latest version).

When I did decent overclock to FSB 260, 1.40V, 870MHz memory with 5-5-5-12, my score is: Sandra RAM 6591/6592 and PCMark05 RAM 5123.

Does anyone have these modules and could tell me its limits, so I can set there some better timings, or so? CPU seems to be stable on 4.05GHz and 1.45V, so I can increase FSB to 270. Thanks a lot. Lukke
post #2 of 5
Set ratio to 3:5 and timings at 4-4-4-8 and 2.2v or 4-4-4-12 and 2.2v
Corsair RAM is excellent for overclocking.

Those 5-5-5-15 timings are bad.

I have the Corsair 8000UL a.k.a. DDR2 1000 and run my system with a 1:2 ratio but with the fallowing timings:

post #3 of 5
Thread Starter 
And dont you know where I can check if it isnt runing with 2T? Because I noticed when 2T command is disabled, bandwidth is better. I already have 3:5 divider set. The last option in bios I dont know what to set is "Write recovery Time"... I can check it from 2 to 6 or so. Its default on 4.
post #4 of 5
Quote:
Originally Posted by Lukke

When I did decent overclock to FSB 260, 1.40V

whoa, my 920 only needs 1.3 to run at 275FSB stable, and 1.32 for 287FSB

Was your's unstable and needed the voltage? If not, you can probably back it down.
post #5 of 5
Thread Starter 
Quote:
Originally Posted by Thumper
Was your's unstable and needed the voltage? If not, you can probably back it down.
Yup, it was unstable in Prime95, so I had to increase voltage to 1.4. For 287 FSB I would need at least 1.5V and its become tooo hot. So I am now on 270 FSB and 1.45V... Memories are running on 2.1V and it seems no problem with 4-4-4-4 timings, but does anyone has better results?
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