HOW do PSU rails and RAM TIMING;s work? - Techist - Tech Forum

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Old 07-13-2005, 02:47 PM   #1 (permalink)
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Join Date: Apr 2005
Posts: 156
Default HOW do PSU rails and RAM TIMING;s work?

Okay these have been annoying me for ages!

What are the rails on a PSU ... I haven't a clue! (in english)

Also I see RAM with timings like 2.5, 3, 7!

I know the first is 2.5 which is CAS Lanency (lower the better)

Please explane! .... thanks!

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Old 07-13-2005, 03:46 PM   #2 (permalink)
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Join Date: Dec 2004
Location: Canada
Posts: 3,790

This has been covered and therefore I shall close this since a simple search could have answered your questions, but I will give you a brief synopnis.

Briefly, rails are sources of power your computer draws at rated a voltage (3.3v 5v or 12v) with a specific output and current rating for specific components. Read this for a more extensive explanation.

In short, timings refer to nanaseconds memory takes to refresh from a cycle. I cannot stress enough that timings effect stability, not bandwidth, and therefore are only important if one intends to overclock. For anything you could possibly want to know about timings you should read this.

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