MinerAl
Well-known member
On eBay right now there are many RAM cards for Duos. Most of them are in the <$20 range for 8M cards. The 40M cards are in the $150 range and the one 48M card available is listed at $300. (This is in no way a criticism of the prices; if they can get that for their RAM, then God bless em.)
So naturally I wondered if I could get one of the cheap 8M cards and (have someone) solder higher capacity chips onto it. It looks like the 8M cards have 16 x 28-pin individual RAM (TMS44800DZ 70-ns, for example) chips on them. Are there larger RAM chips in the same form factor with which these could be replaced? The pictures of the 40M and 48M cards show the same general configuration and pin count.
Here's an auction with a good pair of images of what I'm talking about: http://www.ebay.com/itm/APPLE-8MB-POWERBOOK-DUO-210-230-270-280-8MB-MEMORY-/221737632350
RAM is voodoo to me, so if this is a stupid idea, please be gentle. If it'd work, and people will pay hundreds for high capacity cards... seems like it might be a business opportunity for a blister-fingered solder-jockey.
So naturally I wondered if I could get one of the cheap 8M cards and (have someone) solder higher capacity chips onto it. It looks like the 8M cards have 16 x 28-pin individual RAM (TMS44800DZ 70-ns, for example) chips on them. Are there larger RAM chips in the same form factor with which these could be replaced? The pictures of the 40M and 48M cards show the same general configuration and pin count.
Here's an auction with a good pair of images of what I'm talking about: http://www.ebay.com/itm/APPLE-8MB-POWERBOOK-DUO-210-230-270-280-8MB-MEMORY-/221737632350
RAM is voodoo to me, so if this is a stupid idea, please be gentle. If it'd work, and people will pay hundreds for high capacity cards... seems like it might be a business opportunity for a blister-fingered solder-jockey.