Need memory timings....Motherboard won't run memory on auto SPD

[Techno]

I just got a Asus A7V880 and another 512MB of RAM. Now my problem is I have 3 512MB PC2700 and 1 512MB PC3200. The motherboard will not let me boot w/ the memory timings on auto detech spd. The only way I can boot w/ SPD is if I take the PC3200 Dimm out.. Then it boots fine. But I want 2GB of RAM so I have to mess around w/ the stuff manually... Can someone tell me what the best timings are so I can try then and go backwards untill its stable?

SDRAM Bank Interleave.. Disabled, 2-Way, 4Way
Precharge to Active (trp).. 2T, 3T, 4T, 5T
Active to Precharge (tras).. 6T, 7T, 8T, 9T
Active to CMD (trcd).. 2T, 3T, 4T, 5T
REF to ACT/REF to REF (trcrfc).. 12T, 13T, 14T, 15
DRAM Command Rage.. 2T Command, 1T Command

V-Link 8X Supported.. Enabled, Disabled
V-Link Data 2X Supported.. Enabled, Disabled

AGP Read Synchronization.. Enabled, Disabled
AGP Fast Write.. Enabled, Disabled

AGP Master 1 W/S Read.. Enabled, Disabled
AGP Master 1 W/S Write.. Enabled, Disabled


Thank you!!

 

[Fern]

Might try putting in the PC2700 sticks, choose SPD and then see what those timings are. Then go into BIOS, select Expert/manual timings. Plug in the same values the SPD did. Power down, add in the PC3200 and see if it works.

We could prolly make a good guess if you listed what the various ram was spec'd for (in terms of timings).

Fern

 

[Viper96720]

Get cpu-z and see what the memory timings are with just the pc-2700's. Then use those settings with the PC-3200. You'll probably have to set command rate to 2T. Since your filling up all the slots.

 

[Techno]

Thanks guys... I figured out the problem. 3 of my 512MB dims are PC2700 cas 2.5 wile the newest stick of memory is a 512MB PC3200 cas 3.0. I've tried everything to get all of them to play nice and they refused. So I'll send the PC3200 back and get another one that has cas 2.5.

Thanks again!