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General discussion

PC100 RAM value

Aug 20, 2004 12:06PM PDT

Pulled two sticks from old Dell machine. Can anyone tell me the value of this RAM? Two sticks marked
PC100-322-620. Thought they came in 64,128,256......

Discussion is locked

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Re: PC100 RAM value
Aug 20, 2004 12:11PM PDT
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Re: PC100 RAM value
Oct 8, 2004 12:04PM PDT

Obviously the PC100 is the speed, some were PC133, 10ns vs. 8ns. The 322 is the quality of the stick, that's a cheap one, 222 is better, 211 even better, the 620 is just the configuration of the memory. Look at each module closely and count them, that'll give you the ram value of each stick.

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(NT) (NT) E-Bay
Oct 8, 2004 11:02PM PDT
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Re: PC100 RAM value
Oct 9, 2004 2:27AM PDT

Some memory boards have stickers or labels in it, check it out.
One way for finding out is to install it to your computer (if it will be compatible), remove current memory boards first, then check how much memory will be counted during start-up, or go to start, control panel, system, then system information, there the operating system will measure your memory board capacity.

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Re: PC100 RAM value
Oct 15, 2004 2:54PM PDT

Wow, you got a lot of weird answers to your question!!

Let's straighten it out.
Let's talk about the numbers 322-620

322 pertains to the CAS latency of the module
CAS stands for Column Address Strobe -OR- Column-Address Select. CAS latency refers to the number of processor cycles from when a Read command is registered to when the data from that Read command becomes available. The 322 on your sticks mean:
3=CAS Latency
2=tRCD
2=tRP
This is long lingo for saying that your have CL3 memory. The reason? tRCD and rTP speeds carry a default value of 2 and 2 with PC100 memory.
Example:
PC100-322-620 is 100MHz, CL3, trcd=2, trp=2, tac=6, 2= spd rev 1.2 with the last digit reserved.
You have no indication as to the MB of th emodules. Are they 64MB, 128MB or 256MB? Obviously, without this final info you can't get the answer.