Adam wrote:
>
> the customer reviews led me to the following ...
>
> G.SKILL Ripjaws Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3
> 12800) Desktop Memory Model
> F3-12800CL9Q-16GBRL [$95]
> http://www.newegg.com/Product/Produc...82E16820231315
>
> G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3
> 12800) Desktop Memory Model F3-12800CL9Q-16GBXL [$95]
> http://www.newegg.com/Product/Produc...82E16820231429
>
> But, they are not listed in the approved list suggested by the board maker
> Asus.
> Are these models okay or not?
>
> What is the difference between the two models above?
> And, how is G.SKILL vs Crucial vs Corsair?
Corsair, G.Skill, Geil, Patriot, Mushkin, OCZ, Kingston are nothing
special. Most of those companies (actually probably all but one of
them) don't even test their products extensively but simply use PC-
based testers, rather than the million-dollar machines that chip
manufacturers use. One of those module companies even said it was OK
for a module to show 2 errors during testing (except for their 2133
MHz/PC17000 modules, which had to show 0 errors).
Crucial is always good as long as you avoid anything with heatsinks on
it. Another brand that's always good is Samsung, and their 1.35V DDR3
modules will work in 1.5V motherboards.
In general you should avoid any memory with heatsinks on it because
they don't help at all and are actually a sign of low quality -- the
manufacturer can hide no-name or overclocked chips under the
heatsinks, and it's cheaper to slap on highly decorated heatsinks than
to use better quality or faster chips. Also before buying modules
with tall heatsinks, check the clearance between the DIMMs and the CPU
heatsink.
That's not to say everything without heatsinks is high quality. It's
necessary to check the individual chips, and you want chips where the
chip maker or their part number is clearly visible. Chip makers
include Samsung/SEC, Elpida/RexChip, ProMOS, Hynix, Micron, Nanya/
Inotera, and PowerChip.
As for RipJaws specifically, APHnetworks reviewed a PC17000 model
(2133 MHz) and found it was made with Hynix H5TQ2G83BFR-H9C chips.
"H9C" means 1333 MHz:
http://aphnetworks.com/reviews/g_ski...8gbxld_2x4gb/2
I don't think G.Skill is worse in this respect than the vast majority
of its competitors, but the use of overclocked chips could explain why
plain-looking, no-heatsink Samsung PC12800 modules (1600 MHz) are so
well known for being able to run faster than many heatsinked modules
that are "rated" for 2133 MHz.