I'm looking for DDR SDRAM Non-ECC at PC2100 or above in 512mb sticks.
As a student, I have a limited budget, and I've tried looking up ebay,
newegg, fry's, and everywhere else, but I can't seem to find a stick
anywhere below $30 that passes memtest86+. Any websites that have cheap and
reliable RAM?
There is nothing "unreliable" about most memory sold by
those listed above.
You have a specific problem unique to your motherboard or
it's bios. Does your motherboard allow manually setting
memory timings? If so, the answer is probably easier than
you think - buy the cheapest PC3200 CAS2.5 you can find from
a reputible seller, name-brand product if possible, then set
the timings to remain at CAS2.5 or 3, instead of letting the
bios use the SPD which often tends to cause CAS2 at PC2100
speed.
What do you mean "I've tried lookup up ebay,", etc?
Do you mean you have bought all modules below $30 at each
seller? I find this doubtful, your post reads more like
someone who is stretching truth some trying to get others to
do work to save you $. If you can't find memory you want at
$30.00, work an extra hour to make a couple bucks and pay
$35 or $38 or whatever. Being arbitrarily cheap/greedy is
as you are finding out, quickly going to have diminishing
returns.
Everyone would like to just claim "but I want it to work
perfectly at lower cost". Duh. The whole reason why some
parts are especially low in cost is they aren't WORTH as
much for the very real world use. Thus you either play
odds, spend a lot of time and money fiddling with it to save
a small amount of money or know how to put the margins in
your favor a bit more as suggested above with relaxed memory
timings, or raising memory voltage some.
You didn't even bother to mention your motherboard though,
for all we know it just isn't going to be stable populated
with multiple 512MB modules. No motherboard is perfect,
some have memory problems and others just some other problem
instead.