[SMumps1]

Hey all -

I got my new 12" powerbook from apple a few weeks ago...1.5ghz, 512mb ram, etc. Standard stuff. The second day or so I got it I did an xbench test.

I recently purchased a gig stick of RAM from OWC and installed it. So now I'm at 1.25gig ram instead of 512gig. I ran the Xbench test again (after running system optimizer)

the results were strange. The first test performed better overall (only by .4, so i'm not worried). But here's the weird thing. In the MEMORY test, my powerbook before the RAM install blew away the upgraded one. Here's my results. The SECOND number is the older powerbook (without the ram install). I'm hoping someone could let me know or posit reasons why this happened. I'm really confused!

Memory Test
124.72
137.64

System
133.80
143.18

Allocate
691.02—>
688.67—>

450.75 Kalloc/sec
449.22 Kalloc/sec

Fill
148.21
150.29

1179.71 MB/sec
1196.27 MB/sec

Copy
70.29
77.84

351.46 MB/sec
389.19 MB/sec

Stream
116.78
132.51

Copy
110.01
132.01

804.20 MB/sec [altivec]
965.01 MB/sec [altivec]

Scale
116.51
129.11

859.85 MB/sec [altivec]
952.80 MB/sec [altivec]

Add
122.18
133.96

781.96 MB/sec [altivec]
857.34 MB/sec [altivec]

[spiff72]

Exactly which test are you saying shows the old PB being "blown away"?

I don't put much trust in the ability of X-bench to show differences very well. You can get a different result every time you run it...

[Pierre B.]

Xbench is generally considered as quite unreliable as a benchmark. And its last update was two years ago.