Which RAM is right?

  • Thread starter Thread starter Gary McQueen
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Gary McQueen

I have decided to get an AS Rock Socket A SiS 746FX ATX A L
motherboard and an AMD Athlon XP 1700+ 1.47Ghz CPU, but how do I know
which RAM to get? I know the motherboard needs DDR SDRAM, and I know
that getting RAM that is too slow will slow down the system and
getting RAM that is "faster" than the rest of the system will have no
effect (I don't plan on overclocking) but how do I know what is the
right speed? And what's this "parity" and "CL2 / CL2.5" business?
Somebody please help!
 
Gary said:
I have decided to get an AS Rock Socket A SiS 746FX ATX A L
motherboard and an AMD Athlon XP 1700+ 1.47Ghz CPU, but how do I know
which RAM to get? I know the motherboard needs DDR SDRAM, and I know
that getting RAM that is too slow will slow down the system and
getting RAM that is "faster" than the rest of the system will have no
effect (I don't plan on overclocking) but how do I know what is the
right speed? And what's this "parity" and "CL2 / CL2.5" business?
Somebody please help!
Click to expand...

Use PC133 SDRAM in your system, it's the fastest available non-ECC SDRAM.
Parity memory adds an extra bit for every eight bits of data. It is used
for error detection and correction. ECC ram is parity ram.

More info:
http://www.pcguide.com/ref/ram/err.htm

An in-depth explaination of CAS Latency:

http://www.sysopt.com/articles/latency/
 
-
/Graf GT/ stood up at show-n-tell, in (e-mail address removed), and
said:
Use PC133 SDRAM in your system, it's the fastest available non-ECC
SDRAM. Parity memory adds an extra bit for every eight bits of data.
It is used for error detection and correction. ECC ram is parity ram.
Click to expand...

And, just how will this person be able to use SDRAM on a DDR motherboard?
DDR has 184 pins.
 
Go to www.crucial.com

Gary McQueen said:
I have decided to get an AS Rock Socket A SiS 746FX ATX A L
motherboard and an AMD Athlon XP 1700+ 1.47Ghz CPU, but how do I know
which RAM to get? I know the motherboard needs DDR SDRAM, and I know
that getting RAM that is too slow will slow down the system and
getting RAM that is "faster" than the rest of the system will have no
effect (I don't plan on overclocking) but how do I know what is the
right speed? And what's this "parity" and "CL2 / CL2.5" business?
Somebody please help!
Click to expand...
 
Gary said:
I have decided to get an AS Rock Socket A SiS 746FX ATX A L
motherboard and an AMD Athlon XP 1700+ 1.47Ghz CPU, but how do I know
which RAM to get? I know the motherboard needs DDR SDRAM, and I know
that getting RAM that is too slow will slow down the system and
getting RAM that is "faster" than the rest of the system will have no
effect (I don't plan on overclocking) but how do I know what is the
right speed? And what's this "parity" and "CL2 / CL2.5" business?
Somebody please help!
Click to expand...

The Asrock K7S8X supports 184 pin PC3200(200MHz) DDR RAM. You want
Unregistered and non-parity PC3200. CL or CAS refers to CAS latency, which
is a measure of the delay time, in clock cycles, before data is sent. Memory
rated for CAS2.5 has at slight performance advantage over CAS3 RAM at the
same speed. Since you won't be overclocking, either will do fine.Crucial
brand PC3200 is probably a good bet.
 
The Asrock K7S8X supports 184 pin PC3200(200MHz) DDR RAM. You want
Unregistered and non-parity PC3200. CL or CAS refers to CAS latency, which
is a measure of the delay time, in clock cycles, before data is sent. Memory
rated for CAS2.5 has at slight performance advantage over CAS3 RAM at the
same speed. Since you won't be overclocking, either will do fine.Crucial
brand PC3200 is probably a good bet.
Click to expand...

Thanks.
 
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