DDR memory CAS latency question

I bought two 1 gig sticks of OCZ ram locally that also sells at Newegg.com.
It is identified as CAS2 latency ram, yet when I investigated the ram after installation by running CPU-Z it showed the latency as 2.5-3-2-5, not the 2-3-2-5 that is advertised. My motherboard is an ASUS A8N-e. Is this a fault of the CPU-Z program, or is it something else?
CPU-Z identifies everything else correctly, including the model number of the ram, which corresponds to what Newegg calls it.
Am I fretting over nothing?

 

CPU-Z reports my Corsair Platinum CAS 2.5 RAM as CAS 3. I just say "meh" and run it at CAS 2.5.

 

Chiles4, Rockster2U or one of the others may know more about it than I do, but I think you will find that if you reduce the FSB a notch or two it will be able to run at the rated CAS.

My main computer is getting upgraded (more like fully rebuilt ) and I don't have access to Everest or Sandra. One of those will tell you the CAS/FSB relationship of your RAM, example 2.5-3-2-5 at standard FSB setting, 2-3-2-5 at a reduced FSB.

It may be a "safety margin" type of arrangement.

The free version of Everest in my signature is getting a little old, it may or may not work with your motherboard.

Matt

 

skaler2K:

If you go into your BIOS and set your memory manually, you'll find it performs quite nicely at 2-3-2-5. You don't need to change any bus speeds and you want to be cautious about making other changes that you may not be familiar with. Some of the more advanced BIOS settings require a technical manual to understand - ARP - Adrian's Rojak Pot is about the best single source BIOS guide on the web.

You should also verify that you are running 1T timings with this memory configuration.

Lastly, there are several different flavors of OCZ memory, even among the PC3200 modules (I think) you are running. Some users report success with (what I think you have) running at 2-2-2-5 on ASUS A8N boards. You can nose around some motherboard forums to find more information on your specific configuration and with that memory (what I think you have) you will find 3-3-3-8 should give you your most stable overclock if and when you wander into that realm.

 

Mattman, we're not referring to what the RAM can run at, it's about how CPU-Z is identifying the RAM. Apparently, it is mis-identifying both mine and Skaler's memory.

I use two of these sticks and the info actually lists them as CAS2 but I don't think they get that friendly at that setting. I'm pretty sure they're CAS2.5.