Hi everyone,

I’m working on a Windows 95 build with a Soyo SY-5VD / 5VD5 Socket 7 motherboard using the Intel 430VX chipset.

System:

Soyo SY-5VD / 5VD5
Award BIOS VD-1BA1, 11/19/98
Pentium MMX 233
Windows 95 OSR2.x
Goal: 64MB total RAM, ideally 2 × 32MB SDRAM

The issue:

I first tried 2 × 64MB Compaq PC100 SDRAM, P/N 323012-001. The board detected them as 16MB each, which I assume is a chip-density issue.

Then I tried two supposedly 32MB PC100 SDRAM DIMMs, both 16-chip modules with 8 chips per side. These also only detect as 16MB each, so the system still shows 32MB total.

The chip markings I can read:

Samsung KM48S2020CT-GH
Hyundai/Hynix HY57V168010A TC-10

From what I understand, those should be 16Mbit x8 chips, so I expected 16 chips to equal 32MB per module. But this board seems to only detect half of each stick.

Questions:

Has anyone successfully run 64MB SDRAM on a Soyo SY-5VD / Intel 430VX board?
If yes, what exact RAM part numbers worked?
Is this board known to only detect one bank/side of certain 32MB SDRAM DIMMs?
Should I give up on SDRAM and use 72-pin EDO SIMMs instead?

I’m not trying to chase 128MB anymore. I just want a stable 64MB setup for Windows 95 / DOS / early 3Dfx gaming.

Any known-working RAM part numbers would be appreciated.