Ram chips

[melott]

Hi..
 Am I having a senior moment or what ??
 I bought a Retina Z2 card from a resaler
 in Canada. He said it had 2megs memory installed.
 The card has 16 chip slots with "16" 256x4 chips.
 It seems that adds up to 4 megs ram?
 Also I bought on EBay "8" 1mx4 s.c. zips which
 the seller said is 4megs. I checked the numbers
 on the chips and they are TOSHIBA TC514402
 which my A3k book says are 1mx4 chips.
 So if I'm not losing it, 8 chips add up to 8 megs.
 
 So am I wrong, or are they wrong?
 Mel Ott
 :-?

[Xand]

IIRC the X4 part means 4 bits. In order to get 1M by a byte you need two chips. You have to divide the number of chips by 2 to get MB. So 8 1X4's would be 4MB.
16 256X4's would be 16/2 to get bytes = 8 /4 again for only being 256K = 2MB.

I hope that makes sense.

OOOOOOOOOOOOOO. I'm a Technoid now.