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View Full Version : CAS Latency

whubbard
10-09-2006, 07:40 PM
Why is it that two of the pretty much same sticks of RAM, one sells for more? The only difference is the CAS Latency, Stick A) 4-4-4-12 , Stick B) 5-5-5-12. I would assume stick a would be pricier but insted stick b is. They are made by the same company and are the SAME stick, other than the latency. Why does the slower one, cost more?
blue60007
10-09-2006, 07:57 PM
What particular brand?

A lot probably has to do with supply and demand. If there's a demand spike for Stick B and not A, the prices will go up for B... Check prices in a month and the story will be different.
whubbard
10-09-2006, 08:27 PM
The Corsair EPP chips 800mhz, dual 1gb (total 2048)
glc
10-10-2006, 01:23 PM
SPECIFIC links, please.
12twelve12
10-10-2006, 02:17 PM
Edit: nevermind
whubbard
10-11-2006, 06:21 PM
Cheaper but better CAS:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2285155&CatId=2264

More expensive but worse CAS:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2285165&CatId=2264
mojo
10-11-2006, 07:40 PM
"Better" CAS would mean a lower number. Lower is always better in terms of latency. In this case it is the number of cycles it has to wait between operations. It is much more complicated than that and frankly over my head, but a lower number is better, not a higher one.
blue60007
10-11-2006, 08:56 PM
Check again...the cheaper one is the lower CAS.

Want an even cheaper alternative?

http://www.newegg.com/Product/Product.asp?Item=N82E16820145590

Doesn't have the useless LEDs of the PRO series...same thing, no extra lights.
mojo
10-12-2006, 06:33 AM
Yeah, I thought he was confused from the initial posts, but then I checked the links and saw that my first post was pointless, but then the phone rang and I said "Thank you for calling technical support..." Then I forgot to edit my post to keep my from looking dumb.
whubbard
10-12-2006, 07:56 AM
The cheaper one is 4-4-4-12, isn't that better than 5-5-5-12???
rwest
10-12-2006, 08:15 AM
Makes ya Kinda' scared to go for the chaper one, doesn't it.;) Loos like the better value is one with the lower Latency. Maybe an oversite on thier part.

Is it possible the higher latency may allow the memory to actually run faster? By the books the lower latency should run faster(right?) but actual speeds may vary. But then again you would have to physically put the one set up against the other, to know that.
mojo
10-12-2006, 08:34 AM
The cheaper one is 4-4-4-12, isn't that better than 5-5-5-12???

Yes, yes it is. I misread your initial posts and then didn't check the links before I fired off a response.
whubbard
10-12-2006, 01:39 PM
ok, np...I'm definietly going to buy the cheaper on then!