MEMORY UP GRADE TROUBLES

**BAD.IRON** · February 19th, 2001, 08:12 PM

I'm doing a simple memory upgrade on a socket 7 motherboard, bios #'s 10/18/96-i430vx-10031996c-00 award. Going from 16 Megs of simm's to 32 Megs of dimm.

When I put the dimm memory in the 32 meg show as 8 meg, 64 megs shows as 16 megs, and 128 shows as 32 megs. What gives?

I tried to enter the correct memory size manually through Trouble Shooter. Any help would be appreciated.

Darren Wilson · February 19th, 2001, 08:23 PM

Some boards using the i430VX chipset didn't support SDRAM, in fact I am sure that the earliest Intel chipset to support SDRAM was the i430TX. Some VX boards had a DIMM slot or 2 on them but these were for EDO DIMM's.

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The Carpers Lodge.net
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**Damned Angel** · February 19th, 2001, 08:46 PM

While I believe Darren is correct, I seem to remember having to use double heighted sdram for some older boards. May not be easy to get ahold of these days though.

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If it aint broke......use a bigger hammer

Darren Wilson · February 19th, 2001, 09:11 PM

Taken from the Intel Developers Website :-

<font face="Verdana, Arial" size="2">
Do 430VX chipsets work with 4M x4 SDRAMs?

430VX does not support x4 SDRAM configuration.
The SDRAMs, due to their synchronous nature, put extra pressure on meeting timing specifications. Specifically at 66MHz (15ns clock period), the clock skew and Hclk signal integrity become major issues. Consequently, it is purely a loading/timing reason why we cannot support x4 SDRAMs. We do support x8 or x16 SDRAMs because now loading is halved. Future chipsets are heading for higher speeds and will be even harder to meet the timings. In summary, 430VX can drive 8 loads per row. This sets our lower limit at x8.
</font>

Unless you can obtain older SDRAM DIMMS you are going to struggle, i.e. 66Mhz 15ns rated

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Darren Wilson
Webmaster
The Carpers Lodge.net
The Webs Number One Resource for Today's Carp Angler.

FLAMERS

sly69 · February 20th, 2001, 01:00 AM

<font face="Verdana, Arial" size="2">Originally posted by Darren Wilson:
Taken from the Intel Developers Website :-

Unless you can obtain older SDRAM DIMMS you are going to struggle, i.e. 66Mhz 15ns rated

</font>

For once I look at the end of a post, almost posted the same site info...oops

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Ain't Life A Byte."