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rage10
05-14-07, 12:10 AM
Will someone please explain what the timming and cas latency numbers mean?
I'm stumped in getting new ram.

thanks,
rage10

mojoman0
05-14-07, 01:35 AM
hah I'd like someone to give a good explanation about this too. All I know is that the lower the latencies the better. This sounds logical as high latency is bad. I just don't know what all the timing numbers mean.

DMx
05-14-07, 01:39 AM
Timings are how many clocks until it does that action again.

E.g. a CAS of 2 will wait 2 clocks before doing it's task again. So a CAS of 2 and a frequency of 400MHz will do 200,000,000 operations per second (theoretically) in the CAS area (but you have to consider other timings etc)...

I think that is how it works, don't quote me on it though.

john19055
05-14-07, 03:33 AM
If you are running a AMD 939 then Cas timeing was more important,you wanted the lowest you could get like 2-2-2-5-1T for it to be the fastest
But with a Core 2 Duo it hardly manners..On my Core 2 Duo E6600 I have ran mine as fast as 1200mhz at 5-5-5-15-2T 2.3v and as low as 600mhz at 3-3-3-6-2T 2.1v and with 1:1 ratio at 800mhz at 4-4-4-7-2T 2.2 and the difference in games was very small..

t3hl33td4rg0n
05-17-07, 04:58 AM
They are just basically "timing" settings used to tell the computer when to transfer and/or process data in RAM measured in clock cycles if i remember correctly.

This exaplains it better: http://en.wikipedia.org/wiki/CAS_Latency

rage10
05-20-07, 09:57 PM
wich is better?
linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820178090) x2

linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820227190)

hirantha
05-20-07, 11:30 PM
wich is better?
linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820178090) x2


linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820227190)

Go for the DDR2 800 and if you have extra cash it doesnt hurt to go with over 1000Mhz RAM(good if you are overclocking) with 4.4.4.12 timing( lower the timing the better)

rage10
05-25-07, 02:27 PM
linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820145043)
how about this?

hirantha
05-25-07, 06:00 PM
linky (http://www.newegg.com/Product/Product.aspx?Item=N82E16820145043)
how about this?

yeah thats a good one you can run that RAM at 1Ghz with 4.4.4.12 timing

rage10
05-27-07, 01:05 AM
how much can you lower the timings? And can you lower the cas latency?

EDIT: linky (http://nvnews.pricegrabber.com/search_techspecs_full.php/masterid=26254097) and why does it say the cas latency is 4 here?