Tightening timings on Corsair XMS2

I just ordered it from newegg yesterday. It comes at 5-5-5-15.

With those timings I assume it's the PC8500 memory (1066 MHz). I have those modules and have been able to run them completely stable with 4-4-4-12-2T @ 956 MHz (with Oblivion max settings 1280x1024)

Er woops...5-5-5-12. It's PC6400, but hopefully the same holds true for both sets of memory.

Is a tRas of 12 really that much better than a tRas of 15?

Personally I'd choose the 6400C4 over the 6400C5 as the price difference isn't that big...
1GB x 2 (2GB) PC6400 DDR2 CL4 (Corsair, TWIN2X2048-6400C4PRO) € 299,-
1GB x 2 (2GB) PC6400 DDR2 CL5 (Corsair, TWIN2X2048-6400PRO) € 262,60


Ignore the above, since you already ordered. In which case you'll have to experiment with the timings and see how far it goes.

I wouldn't suggest either of those..

I would go with OCZ Platinum Revision 2 ddr2-800 for $190 after rebate on newegg.

It has timings of 4-4-4-15, which gives better performance than the Corsair 5-5-5-12 for only 10 bucks more! Also it looks freaking sweet.

I just bought the Corsair PC6400 Pro from Tiger last week for my new Conroe build. No problem changing timing to 4-4-4-15. The MB auto set it at 5-5-5-15. For some reason, the Intel D075XBXLRK won't allow me to bring the 15 down to 12. I also ask, how much difference does this make?

I haven't started to OC yet so I don't know about that. The system is already lightning fast. My addiction is BF2 and I now spawn in a minute before anyone else. I have to wait for someone to frag. Sure beats my old AMD3200+Barton...

These were the specs on Tiger. ($298.99 plus shipping)
Corsair TWINX PRO Dual Channel 2048MB PC6400 DDR2 800MHz E.P.P. Memory (2 x 1024MB)
Memory Size 2 x 1024MB
Memory Speed 800MHz PC6400
Memory CAS Latency 4-4-4-12
Memory Type Dual Channel DDR2
Pins 240
Corsair Dual Channel 2048MB PC6400 DDR2 Memory
The TWIN2X2048-6400C4PRO is a 2048 MByte matched pair of DDR2 SDRAM DIMMs. This part delivers outstanding performance in the latest generation of DDR2-based motherboards. It has been tested extensively in multiple DDR2 platforms to ensure compatibility and performance at its rated speed. This memory has been verified to operate at 800MHz at the latencies of 4-4-4-12. As part of Corsair's XMS ProSeries, each module includes the high-efficiency aluminum XMS heatsink, and 24 activity LED's that show the level of memory activity

My Rig:
Core 2 Duo X6800 Conroe (Stock Clock for now)
Intel D975XBXLRK - 304
Thermaltake Big Typhoon HSF
2 GB Corsair Pro PC6400 4-4-4-15
ATI X1900XTX
74GB 10K Raptor HD
Soundblaster Audigy 2 SZ
NEC OEM DVD Burners (x2)
Gigabyte 3D Aurora Case
Ultra X-Finity 600W SLi Certified PSU

My Asus M2N might have problems with that memory. That's the main reason I bought the Corsair. I have to go off to college soon I don't really have that much time to be RMA'ing.

P.S. Hey RedRaider isn't it Audigy ZS, not SZ? Correct me if I'm wrong. I just got an Audigy 2 too, but not the ZS/SZ. How does it sound?