advice on listing a 'vintage' mb..

**grouchyolddude** · 11-30-2013, 06:14 AM

I wouldn't pretend to know how to hook it up n test it... If it were still in the machine, maybe

So the only way to determine what the memory sticks are, would be to check the system info once I have the board hooked up??

**ryanw** · 11-30-2013, 08:37 AM

Originally Posted by grouchyolddude

I wouldn't pretend to know how to hook it up n test it... If it were still in the machine, maybe

So the only way to determine what the memory sticks are, would be to check the system info once I have the board hooked up??

No, you can still figure out what size the chips are. I agree with JKBINDY, that it's probably a total of 8 MB for all the sticks together. I am not super well informed about these 30 pin sticks, but this is how I have determined them in the past before I had a RAM checking device:

In picture 4747, there are two different chips. I search for those part numbers, and you can usually find the memory size in them. It's usually listed in bits, not bytes. There are 8 bits in one byte. So, megabyte size is 1/8 what is shown.

bp41c1000a-6 size - 1Mx4
4c4001jdj-6 size - 1Mx1

First two chips are 1Mx4 which is one megabit four bits wide. So, 512kilobytes, or 0.5megabytes. Two chips = 1 megabyte.
The third chip works out to 0.125megabytes.

This is where I get confused with my lack of knowledge because the total size doesn't make sense. But it would work out to 1.125MB ram chip.

**grouchyolddude** · 11-30-2013, 12:50 PM

Originally Posted by ryanw

No, you can still figure out what size the chips are. I agree with JKBINDY, that it's probably a total of 8 MB for all the sticks together. I am not super well informed about these 30 pin sticks, but this is how I have determined them in the past before I had a RAM checking device:

In picture 4747, there are two different chips. I search for those part numbers, and you can usually find the memory size in them. It's usually listed in bits, not bytes. There are 8 bits in one byte. So, megabyte size is 1/8 what is shown.

bp41c1000a-6 size - 1Mx4
4c4001jdj-6 size - 1Mx1

First two chips are 1Mx4 which is one megabit four bits wide. So, 512kilobytes, or 0.5megabytes. Two chips = 1 megabyte.
The third chip works out to 0.125megabytes.

This is where I get confused with my lack of knowledge because the total size doesn't make sense. But it would work out to 1.125MB ram chip.

WoW! thanks fer the math lesson too