[ELDK] DDR vs SDR SDRAM speed

Wolfgang Denk wd at denx.de
Mon Nov 17 00:59:31 CET 2008


Dear Chris,

In message <E192DE55D4494F82BE3507C22CD72D50 at kos> you wrote:
> 
> Has anyone got an approximate improvement of DDR over SDR on the 5200? 
> For example, something like a bogomips output.

Memory speed and bogomips have nothing to do with each other. Bogomips
is just a virtual CPU clocking number and can only be used to compare
CPUs of the same family (not even architecture).

As a ballpark number, you can expect some 50% better performance with
DDR on the 5200, compared to using SDRAM.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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