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First post, by Intel486dx33

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I have a Cirrus Logic 5428 and 5429 video card that I would like to add more ram to to turn it into a 2mb card.
My question is will these ram chips work in these card ?
Toshiba TC528257J-70 CMOS FP DRAM, 2 M-bit (256 k x 😎 70ns

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Last edited by Intel486dx33 on 2020-01-24, 14:20. Edited 1 time in total.

Reply 2 of 17, by Intel486dx33

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What about these ?

2 PCs of KM416C256-7 or 2 PCs of HY514264-70 256Kx4 DRAM (SEC/HYNIX)

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Reply 3 of 17, by GigAHerZ

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I found a while ago some 4Mb Elpida chips rated for 25ns/100MHz from ebay. While overkill in speed, they work perfectly with my VLB and PCI video cards, that take such memory.

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 5 of 17, by mpe

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You need two 256Kx16bit FPM chips to upgrade this. The one you have is 256Kx8

That's being said this is a pointless upgrade on CL-GD542x series as it only enables two extra interlaced resolution modes and no other benefits.

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Reply 8 of 17, by The Serpent Rider

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found a while ago some 4Mb Elpida chips rated for 25ns/100MHz from ebay. While overkill in speed, they work perfectly with my VLB and PCI video cards, that take such memory.

EDO chips won't work on old VLB cards.

I must be some kind of standard: the anonymous gangbanger of the 21st century.

Reply 9 of 17, by GigAHerZ

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The Serpent Rider wrote on 2020-01-24, 15:40:

found a while ago some 4Mb Elpida chips rated for 25ns/100MHz from ebay. While overkill in speed, they work perfectly with my VLB and PCI video cards, that take such memory.

EDO chips won't work on old VLB cards.

Well, on my S3 805 card, they do work...

mpe wrote on 2020-01-24, 14:44:

That's being said this is a pointless upgrade on CL-GD542x series as it only enables two extra interlaced resolution modes and no other benefits.

You can always create a ramdisk into video memory. 🤣

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 10 of 17, by dionb

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One step back: *why* do you want to upgrade this particular card?

GD5428 can accept 2MB, but are very limited in what you can do with it, it just gives you a few extra interlaced modes and no extra resolution or colour depth 😮

I've been trying to upgrade a 5428 purely for the soldering challenge of doing so - but don't expect any tangible benefit. If you want to run 1024x768x16b or 80x600x24b, you need a different card/chip.

Reply 11 of 17, by Intel486dx33

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dionb wrote on 2020-01-24, 18:22:

One step back: *why* do you want to upgrade this particular card?

GD5428 can accept 2MB, but are very limited in what you can do with it, it just gives you a few extra interlaced modes and no extra resolution or colour depth 😮

I've been trying to upgrade a 5428 purely for the soldering challenge of doing so - but don't expect any tangible benefit. If you want to run 1024x768x16b or 80x600x24b, you need a different card/chip.

What is a good VLB card for lots of ram ?

Reply 13 of 17, by cyclone3d

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I wish I could find a 4MB VLB video card for a good price. I certainly haven't seen any if the past few years for a good price... besides maybe a Weitek card and those are horrible in DOS.

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Reply 14 of 17, by Anonymous Coward

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4MB VLB cards were always pretty rare, because they mostly came out at around the time people were buying PCI Pentiums, and they were crazy expensive. At one point the Diamond Stealth64 Video VRAM 4MB was the easiest one to get, but the memory upgrade modules usually had to be scavenged off the PCI version. The ATi Graphics Pro Turbo used to be slightly more available as well, but those also never came with they extra memory. ATi's cards had several different versions of the memory upgrade, and often times swapping them off PCI cards didn't work (the connectors were the same but had different pinouts).

Most other brands also had 4MB models, but they were less common. 4MB cards that weren't from ATi almost always used S3 chips. 928, 964 or 968. I am aware of models from Orchid, Hercules, Number Nine, ELSA, SPEA, Miro and Metheus. I suppose one of the Diamond Viper's with the Weitek P9100 also have 4MB models. Matrox had a 4MB model. Then there's that Spider Graphics card that uses the Cirrus Logic CL-GD5434 chip. That's a really odd one, because the integrated RAMDAC wasn't really up to the task of handling resolutions that could benefit from 4MB, plus it uses DRAM (the only one I know of at the moment). I think the S3 864 might have supported 4MB DRAM as well, but I am not aware of any VLB cards that have that combo.

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Reply 15 of 17, by mpe

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Anonymous Coward wrote on 2020-01-25, 05:18:

I think the S3 864 might have supported 4MB DRAM as well, but I am not aware of any VLB cards that have that combo.

I actually own one. Although it currently only has 2MB it could be upgraded to 4. Question is how useful is that at it has no better DAC than other 864's.

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Reply 16 of 17, by Anonymous Coward

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That card looks like it was built for a special purpose judging by those huge connectors. Video editing?

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