What does 555 mean in PC2-5300u 555 - Techist - Tech Forum

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Old 02-27-2011, 12:52 AM   #1 (permalink)
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Default What does 555 mean in PC2-5300u 555

Okay, I'm not a newbie to computers, but I've always been the kinda guy who does things without knowing the technical terms for things.

I know that the pc2-5300 means the memory has a speed of 667MHZ. But I think this memory was actually labeled as 555MHz. Does anybody know what is up with that?

I have seen this a lot in memory I have ordered to put in computers. It will have a u after the pc2-####, and then have a number a little lower than the ram's speed after that.

What does this number mean, and does it mean that the memory will perform slower than memory labeled pc2-5300 667MHz?

I feel like an a-- for asking this considering I used to be so big in computers that I was upgrading my Windows 3.1 computer to 4MB (back when that was A TON of memory) by myself at age 13. I guess around then I became more interested in curves than computers.

Thanks for anyone who can help.

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Old 02-27-2011, 01:16 AM   #2 (permalink)
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Default Re: What does 555 mean in PC2-5300u 555

The "u" should mean Unbuffered memory.

The 555 is the timing, 5-5-5-12 etc.
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