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What is this? A RAM chip?

Author	Topic
thequietman Junior Member Canada 127 Posts	Posted - 21 Jul 2003 : 12:23:29 I just got a hold of the RAM from my 5200 motherboard. One is a normal 8MB 72-pin SIMM, the other is a strange looking chip. It it the same size as a SIMM with 72-pins and all the grooves and notches, but it doesn't have the normal DRAM chips positioned vertically along the side of it, it only has 2 small chips positioned horizontally on each side. It's not labeled at all like the 8MB is. I assume it's a different kind of RAM, but I have no clue what kind or what size. Anyone have an idea what this is? --------------------------------------------- I want to be unique just like everybody else.
cory5412 68KMLA Comrade-in-Arms USA 4679 Posts	Posted - 21 Jul 2003 : 12:25:30 It's probably a 4 or 8 MB chip... Maybe 1 or 2 now that I think of it... I have loads just like you describe.... Official 68k videographer Official MLA TourGuide "I'm just a normal computer geek who somehow landed a social life" I have alot of posts... if you don't like it than I don't know what to say.
thequietman Junior Member Canada 127 Posts	Posted - 21 Jul 2003 : 14:26:59 Well if I were to make an educated guess I would probably say 2MB. Since the 8MB chip has 8 chips along both sides, then 2 chips on both sides would be 2MB. Just tryin to get an idea of how much RAM it adds up to so I can put the most accurate specs on my ads . --------------------------------------------- I want to be unique just like everybody else.
G4from128k Full Member USA 873 Posts	Posted - 21 Jul 2003 : 15:24:36 Actually, I'd bet that cory is right. I have some 72-pin SIMMs with two horizontal chips that are 8 MB (that's what they say on the label, and what they provide in the Mac). I also have some 30-pin 2 MB simms with 4 chips. As chip capacities grow, they just make small capacity SIMMs with a few large capacity chips. Sometimes you can google the chip part number that is printed on the individual chips to figure out the chip capacity. You can also figure out when the chip was made -- most chips have a four digit number with the year and the week of the year of manufacture. G4From128k by Day: Mild-Mannered Engineer and Trapeze(tm) Artist by Night: Colonel of Truth, Justice, and the Macintosh Way Reserve Officer in 68kMLA Cantankerous Coot Contingent
cory5412 68KMLA Comrade-in-Arms USA 4679 Posts	Posted - 21 Jul 2003 : 15:24:40 the computer works or no? You can probably use Apple System Profiler to tell you what kinds and sizes of RAM chips are in what slots... Official 68k videographer Official MLA TourGuide "I'm just a normal computer geek who somehow landed a social life" I have alot of posts... if you don't like it than I don't know what to say.
thequietman Junior Member Canada 127 Posts	Posted - 21 Jul 2003 : 16:58:29 It's RAM for a 5200 motherboard that I have no use for any mroe since I sold my LC 580. I can't test it or the RAM until I can find a machine to put it in . --------------------------------------------- I want to be unique just like everybody else.
maclover5 LC Doctor/Hot Rodder Australia 5830 Posts	Posted - 21 Jul 2003 : 17:00:19 Get like an LCIII or LC475 or something to test it in. Shouldn't be too expensive. "**** em" - Jobs in regards to customers Warrior maclover5 68kMLA Official 68kMLA Detective Number of 68ks Liberated: 7 Number of Contraband (PPC) Liberated from the Dumpster: 1
thequietman Junior Member Canada 127 Posts	Posted - 21 Jul 2003 : 17:06:25 Anything is too expensive now, I'm just trying to sell it so I don't think I'll go buy a computer to test it in. Here's the result of my goole search: HY5118160, DRAM, 1M16 DRAM 1K/16ms ref, dual* CAS Does this mean that each chip is 1MB for a total of 4MB? or is it 1MB total? --------------------------------------------- I want to be unique just like everybody else.
G4from128k Full Member USA 873 Posts	Posted - 21 Jul 2003 : 17:36:05 quote: HY5118160, DRAM, 1M16 DRAM 1K/16ms ref, dual* CAS AFAIK, 1M * 16 means that the chip has 16 bits of data at each of a million locations (actualy it will be 1024^2 = 1048576 locations). So each chip provides 16 megabits or 2 megabytes of storage. With two chips on the SIMM, you have a 4MB SIMM. G4From128k by Day: Mild-Mannered Engineer and Trapeze(tm) Artist by Night: Colonel of Truth, Justice, and the Macintosh Way Reserve Officer in 68kMLA Cantankerous Coot Contingent
maclover5 LC Doctor/Hot Rodder Australia 5830 Posts	Posted - 21 Jul 2003 : 18:46:48 Jeez you're good, G4. I thought that 161 would've meant that it was 16 megs, on 1 meg chips. Maybe THATS why i end up with so many "16 meggers" that end up being 4 meggers. "*** em" - Jobs in regards to customers Warrior maclover5 68kMLA Official 68kMLA Detective Number of 68ks Liberated: 7 Number of Contraband (PPC) Liberated from the Dumpster: 1
thequietman Junior Member Canada 127 Posts	Posted - 21 Jul 2003 : 18:51:56 Well there are 4 chips on the chip, 2 on each side. --------------------------------------------- I want to be unique just like everybody else.
G4from128k Full Member USA 873 Posts	Posted - 22 Jul 2003 : 05:01:05 quote: Well there are 4 chips on the chip, 2 on each side. OOPs. I'm not too observant, am I. OK, so they are 8 MB SIMMs. The confusing thing with memory chips is that the individual chips are always defined in term of the number of bits as a product of the number of addressable locations and the number of bits read out from each location. G4From128k by Day: Mild-Mannered Engineer and Trapeze(tm) Artist by Night: Colonel of Truth, Justice, and the Macintosh Way Reserve Officer in 68kMLA Cantankerous Coot Contingent
thequietman Junior Member Canada 127 Posts	Posted - 22 Jul 2003 : 06:32:54 Ok thanks. At least now I know how much RAM is on the board . --------------------------------------------- I want to be unique just like everybody else.

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