[geeks] Difference between Athlon64 and Opteron?

[Phil Brutsche]

Bill Bradford wrote:
> Is the only difference between an Athlon64 and Opteron 1xx the amount of
> cache?

The dual-core Opteron 1xx chips are Socket-939 while the single-core
Opteron 1xx chips are Socket-940.  Athlon64 is Socket-939.

L2 cache differences are secondary; while the Opteron has 1MB L2, so do
certain Athlon64 models.

Additionally the Socket-939 Opterons aren't as picky about the memory
they work with - IIRC the S940 single-core Opteron 1xx series require
registered memory while the S939 dual-core Opteron 1xx series do not.

-- 

Phil Brutsche
phil at tux.obix.com