"D. SHAW" wrote in message
news:9VNoi.621$...
> Abit KR7A-RAID mobo. Currently have 2 x 256Mb Crucial CL2.5 PC2100
> 166/233Mhz DDR sticks. Just added a 1Gb Samsung CL3 PC3200 400Mhz DDR
> but only a total of 1Gb is showing up. Took out the Crucials and it
> now shows 512Mb, so the Samsung is only registering as 512Mb whatever
> the combination. Tried the Samsung in another (more modern) mobo and
> the full 1Gb shows up. The KR7A-RAID should support 1Gb modules up to
> 3Gb unbuffered in total. Any clues anyone?
There is a reason why the high-density modules are cheap: few
motherboards can use them. You only get half of the total capacity with
high-density modules so double the price you paid to see if the
effective price was cheaper than buying the same low-density memory at
the same effective capacity.
Sellers, like at eBay, like to lure uneducated users into buying the
high-density modules because of their lower cost (due to low demand).
Sometimes they will put a small tiny-sized blurb in their ad about your
mobo having to support high-density modules, sometimes they don't.
Read the following articles:
http://homepage.hispeed.ch/rscheideg...ome_256MB_high
http://www.overclock.net/faqs/113885...w-density.html
You motherboard won't support the geometry (128x4) for high-density
memory. It supports the geometry (64x8) for low-density memory. Since
your mobo doesn't have the extra address line for 128-bit addressing and
because the bit depth is only 4 (instead of 8) on each chip, you see
only half the memory capacity.
Also, high-density modules are SLOWER than low-density ones. You got
ripped.
Linear Mode
