VOGONS


First post, by alexparr

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I'm not sure what type of RAM I need for this card... it has 1MB of memory currently so I assume each chip is 512K in size. I mostly just don't know what terms to use when searching for RAM; and typing the longer strings on the chips themselves certainly doesn't help in my search.
What kind of RAM is it specifically that I need?

Gateway 500S:
OEM Intel D845PT
Pentium 4 @ 1.80 GHz
256MB RAM
GeForce4 MX 440
SoundBlaster Live! CT4780
NEEDS MAINTENANCE

Pentimatum:
Gemlight GMB-P56IPS
Pentium MMX @ 166 MHz
32MB RAM
S3 Virge/DX
SoundBlaster 16 CT2230

Reply 1 of 6, by kixs

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Check what is installed now and search for the same specs.

GM71C4260AJ70: 256K X 16 FAST PAGE DRAM, 70 ns, SOJ40

Visit my AmiBay items for sale (updated: 2025-03-14). I also take requests 😉
https://www.amibay.com/members/kixs.977/#sales-threads

Reply 2 of 6, by myne

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Cheap enough to gamble
https://www.alibaba.com/product-detail/GM71C4 … 0108400950.html

I built:
Convert old ASUS ASC boardviews to KICAD PCB!
Re: A comprehensive guide to install and play MechWarrior 2 on new versions on Windows.
Dos+Windows 3.11+tcp+vbe_svga auto-install iso template
Script to backup Win9x\ME drivers from a working install
Re: The thing no one asked for: KICAD 440bx reference schematic

Reply 3 of 6, by alexparr

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myne wrote on 2025-02-01, 08:43:

Eh, maybe? The site seems somewhat fishy overall.

kixs wrote on 2025-02-01, 08:38:

GM71C4260AJ70: 256K X 16 FAST PAGE DRAM, 70 ns, SOJ40

I found some NEC brand chips (UPD424260-70) with the same general specs. Will these work despite the difference in brand name?

Gateway 500S:
OEM Intel D845PT
Pentium 4 @ 1.80 GHz
256MB RAM
GeForce4 MX 440
SoundBlaster Live! CT4780
NEEDS MAINTENANCE

Pentimatum:
Gemlight GMB-P56IPS
Pentium MMX @ 166 MHz
32MB RAM
S3 Virge/DX
SoundBlaster 16 CT2230

Reply 5 of 6, by alexparr

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DEAT wrote on 2025-02-02, 00:11:

Yes, there will be no problems there.

Alright, I placed an order for these chips. While I'm waiting for them however, I should ask which way they're supposed to go in the card once I get them. I noticed a slant on the chips themselves while looking at some images (which I assume is NEC's version of the typical notch) and a cut corner on the sockets; am I supposed to match these up?

Gateway 500S:
OEM Intel D845PT
Pentium 4 @ 1.80 GHz
256MB RAM
GeForce4 MX 440
SoundBlaster Live! CT4780
NEEDS MAINTENANCE

Pentimatum:
Gemlight GMB-P56IPS
Pentium MMX @ 166 MHz
32MB RAM
S3 Virge/DX
SoundBlaster 16 CT2230

Reply 6 of 6, by DEAT

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Correct - I'm not aware of any 256K x16 SOJ-44 DRAM ICs that have text facing the wrong orientation.

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