The subject line pretty well says it all. Any way to visually id if RAM is
high or low density?
In a word: No.
The first problem is that "high density" and "low density" are rather
meaningless terms unless they are being referenced to something.
Chips that are "low density" today were "high density" two years ago
and flat out didn't exist 3 or 4 years ago. Similarly back in the
Pentium days, "high density" memory meant 64Mbit chips that wouldn't
work with many chipsets of the day, but not 64Mbit chips are not just
"low density" but rather "extremely obsolete density".
Really what you need is the ACTUAL type of chips being used, ie
128Mbit vs. 256Mbit, vs. 512Mbit chips (all of which are reasonably
common on memory modules being sold these days). Next you need to
figure out HOW they are being arrange, ie in a *PROPER* x8 or x16
configuration or in a x4 configuration that violates all JEDEC memory
specifications. Probably 90%+ of all "high density" memory being sold
by eBay vendors and Pricewatch bottom-feeders falls into the latter
category. How it is that they decided on the term "high density" to
mean "total piece of crap that intentionally violates all principles
of memory module design" is beyond me, but then again, buying ANY new
computer parts from eBay is beyond me as well.
Of course, the real solution is MUCH simpler, just go to:
www.crucial.com
You'll end up with something that just WORKS and get a warranty to
boot!