[comp.sys.mac.hardware] How fast is my RAM?

peter@wam.umd.edu (Peter Arensburger) (04/03/91)

I've been trying to find out the speed of the 1 Mb. of RAM in my Mac IIcx.
It's the RAM the Mac was sold originaly with. Two of the four 256 Kb. SIMMs 
have the following cryptic inscription on it:

		MCM514256AJ10
		UIQAF8926

The other two SIMMs have the same inscription except that they have an "H"
instead of the "F".
Is anyone able to decipher this and tell me what the speed of these SIMMs 
are ? Or, could someone tell me where to get an appropriate benchmark 
program ? Thank you.

						-Pete 
 
-- 
In real life: Peter Arensburger, biology weenie
peter@cscwam.umd.edu
..!uunet!mimsy!cscwam!peter

cavalier@alchemy.tcnet.ithaca.ny.us (Scott Mandell) (04/03/91)

Look on the back of your SIMMs.  There should be a - and a # there, like
-8 or -10 or -12.  Multiply that by 10 and there's your speed in ns.  (ie 
a -8 is 80ns SIMMs).  If yours doesnt have that, they may be 100ns 
because of the 'J10' you said was on the chip itself...

Hope it helps...

Scott