G400 DRAM

[Chuck94509]

Today I purchase an OEM G400 32meg. After
I got home an installed it, I discovered that
it had SDRAM and not SGRAM. How big of a
performance hit is the difference? Wouldn't
a 16meg SGRAM be faster than this, only with
less refresh options?
(I got it from a computer show.)
Thanks,
Chuck

[This message has been edited by Chuck94509 (edited 04 June 2000).]

[MadCat]

Depends. SGRAM is supposed to have slightly faster performance clock for clock, but ive never noticed any difference. SGRAM is also supposed to be more overclockable, but my own personal experience has at times shown the opposite. In any case, you should get decent performance out of it. I see no reason to take it back, unless they overcharged you.

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[impact]

Hi.

About the SGRAM/SDRAM thingie. I checked a lot of computer magazines and found out that:

SDRAM (Synchronous DRAM) is a memory designed to run at high frequencies (~200MHz) with better internal architecture compared to regular EDO RAM. It is about 20% faster than regular EDO RAM.

SGRAM (Synchronous Graphics RAM) is a SDRAM enhanced with some functions (Block Write, Masked Write) that help it to work better in an accelerator. These functions allow for faster framebuffer clearing and faster pixel modifications. It is not as good as the SDRAM when it comes to overclocking, because its internal structure is more complicated.