G200 sodimm upgrade specs?

[LemonJelly]

I need to know the specs of those 8meg sodimm memory cards for matrox cards!

i have seen some cards for sale but i dont know much about these sodimm things! here is whats on the 4 ram chips:

0118165BT3D
70 28H5041
IBM 5352
551076404 PQ

the chips look almost the same as the one's on my g200 marvel but they seem to have a pin missing on both sides of the memory chip itself?

anyone have any clues to what size these are?

[rylan]

The G200 marvel uses an 8MB SDRAM sodimm upgrade. Note that there are differant models of the G200s, and some use SGRAM, but from whats on matrox's site, the marvel was SDRAM only.
I looked at IBM's chip marking guide and their part numbering doesn't exactly match any of the markings on that you posted, but taking an educated guess, here is what I come up with:
Data Width: x18
Density: 16Mb
Function: Burst Pipeline Mode (Power PC)
Vdd/Vddq/Logic: 2.5v/1.8v/HSTL
Package Type: TQFP (I think)
Width: .400 pitch
Die Revision: D
Access time: 7ns

This makse sense if there with 4 chips, since the total memory size works out to 8MB then (16Mb *4 / 8bits per byte). And the speed makes sense since I think the card has a 125MHz memory.

[LemonJelly]

would these work m8?

[Wombat]

Why do you want it? Unless you need the memory for certain high resolutions, it will just slow the card down.

[Pace]

Before you question it, G200s slow down their clock rate when the memory addons are utilised...

[capt. marvel]

why is that???

[LemonJelly]

thats sounds bad

[rylan]

Yeah, I remember hearing about that. Something that the memory add on card uses slower memory than the stuff on the board, or because of the additional trace length and loading they had to run it slower to avoid errors.

[LemonJelly]

would that effect the capture side on this card?

[rylan]

Hrm, not entirely sure about that. sorry

[LemonJelly]

I dont use the g200 to play games... well tell a lie! i do but only emulation stuff that doesn't touch 3d! my other machines have better spec matrox cards in them if i fancy playing quake3 or summin!

the g200 is just for the tv-out and video capture! if the 8meg upgrade doesnt effect the speed of capture then i willing to try one!

[Marshmallowman]

I think at default speed, adding the extra memory will speed the g200 up a bit, also allow better res/colour depths.

But as soon as you add the memory upgrade you will not be able to overclock as much anymore.

I considered upgrading mine years ago, but it was to expensive...cost the same as a new card!!!