OESF Portables Forum

General Forums => General Discussion => Topic started by: suchs on March 06, 2004, 11:16:48 pm

Title: pxa250 versus pxa255
Post by: suchs on March 06, 2004, 11:16:48 pm

:?:
Anybody have both the zaurus 5600 pxa250 and the 5600 pxa255 ??

I\'ve been considering trading up, and debating the cost ... or heh, just buying both.

It would be interesting to find out speed and perfomance characteristics.
Any obvious crashes with the pxa250?  

More of a newbie question:
Anybody try the special kernel for the pxa250??
How do I know I loaded it correctly?
 :?:

Title: pxa250 versus pxa255
Post by: yeswarchief on March 07, 2004, 12:08:14 am

you can use dhry21 to do some performance tests - search the forums for dhry21

Title: pxa250 versus pxa255
Post by: tumnus on March 07, 2004, 09:32:08 am

A PXA250 with the Special kernel is actually faster than a PXA255 5600 with the kernel it ships with.

Search the forums and you will find several threads about it.

If you load the special kernel from the ZUG downloads, doing \'cat /proc/version\' will show that colin@paravel compiled it (that\'s me on my home PC)

Unless you know someone with a PXA255 5600, you cannot guarentee what you will get from any retailer as most seem to have lots of PXA250 5600s still and they cannot guarentee which one you will get.

Title: pxa250 versus pxa255
Post by: Anonymous on March 07, 2004, 10:22:02 am

Hi, all
this is a dhry 2.1 test on mly sl5500
seems resault is not bad when compared with pxa250? right?

Dhrystone Benchmark, Version 2.1 (Language: C)
Register option not selected.
Microseconds for one loop:     3.9
Dhrystones per second:   256937.3
VAX MIPS rating:    146.236

Title: pxa250 versus pxa255
Post by: tumnus on March 07, 2004, 11:01:28 am

While the Dhrystone benchmark isn\'t great for comparing devices, on my PXA250 5600 with the special kernel, but no overclocking I get:

Dhrystone Benchmark, Version 2.1 (Language:
C)
Register option not selected.
Microseconds for one loop:     2.5
Dhrystones per second:   406702.5
VAX MIPS rating:    231.476

Which is quite an improvement over the 5500.