SDRAM Cas Latency
 

I Have Award Bios with my MSI Board and Cas Latency is set To Auto- To set it with out auto I have to disable "DRAM Timeing by SPD - Do I need the DRAM Timeing by SPD or can I disable it and Set my CAS Latency to #2 - Which My Crucial Ram Will Run with out a Problem

Do you Agree with this ???

SPD And CAS Latency Values
Every memory module has a limit that is predetermined at the factory. The type is usually marked on the module's label. The information is also stored inside a "SPD" chip, a small 6mm chip mounted on one corner of the memory module. You will see this as a setting option in the BIOS to determine your memory's speed automatically. CAS Latency is measured in CPU clock cycles with the lower number being the fastest and the highest being the slowest.

The CAS Latency value can usually be changed to the following settings: "1", "2", "2.5", or "3" depending on your available BIOS options.

If using different CAS latency memory in your configuration such as one chip being CAS 2 the other CAS 3 do not set the memory to the lower CAS 2 setting as this can cause stability errors.

The preferred setting choice is to have the BIOS use the SPD chip on the RAM module to determine CAS value. If this option exists in your BIOS for stability this setting should be used. Overclockers have pushed the limits of memory far beyond spec to achieve higher frequencies by altering these settings.

Duzmor:D :D

Duz !!

If your chips all support cas 2 then you should be able to set it manually. They may already be running at cas 2 if that is what the SPD info says. I have heard that some chip manufacturers will have there spd read cas 3 regardless just so there is no problems. My Dimms will run cas 2 at 100 but only cas 3 at 133. I tried setting my cas to 2 and then couldn't post. I had to clear my CMOS and set up my BIOS setting again. You can get a utility to read your spd here.
http://www.podien.onlinehome.de/ctspd.htm

with my kt3 ultra i was able to run cas2 but not with my Albatron Kx400+pro. Think it has to do with the motherboard too. I still cant figure that one out.

run the ram at CAS 2 manually

I Disable DRAM Timeing by SPD

and I am running the ram at CAS 2

Thanks for your help

Duzmor !!

Duz !!

DRAM timing by SPD is for n00bs:D