GKX or GMH

[stetser]

Which is better? It seems to me that all the higher end (read: expensive) ram uses GKX. Is there a reason for this?

For instance:

This OCZ uses GMH http://www.newegg.com/Product/Product.asp?Item=N82E16820227181 whereas this Buffalo uses GKX http://www.newegg.com/Product/Product.aspx?Item=N82E16820150043

Ignoring price (I only used newegg for reference) which is the better ram?

 

[fusionpit]

GKX is a 2.5ns chip and the GMH is a 3ns chip. They're both B6 die, but depending on the date they were made the GMH (at least in our testing here) is the better one.

 

[(cf)Eclipse]

B6 die.. revD silicon

and it really comes down to binning. out of micron's fab, GKX is 400mhz, cas5, GMH is 333mhz, cas5, however, micron may put some better chips into the GMH bin to satisfy demand

 

[luihed]

GKX will generally be better..... I wonder how they compare on handpicked sticks

 

[(cf)Eclipse]

i'd guess they're roughly the same..

 

[Mike Clements]

GKX will generally be better..... I wonder how they compare on handpicked sticks

If the ICs were individually screened at the IC level in addition to DIMM screening after assembly, you would have an exceptional DIMM. GKX screened in this manner (we screen every IC we build our XMS with at the IC level, not just spot screening or DIMM screening) is VERY fast and will do well at low latencies, high speeds, or a good combination of both.