View Full Version : strange speed issues

02 February 2009, 03:14 PM
I have XSI 7.01 on a MacBookPro (2,33 GHZ / 2GB / 1 Dual Core / Windows XP 32bit SP2-Boot Camp) and on a Mac Pro (2,8 GHZ / 4 GB / 2 Quad Core / Windows XP 32bit SP3-Boot Camp).

For my testrender I used a simple scene with a room, a spotlight which shoots out 750.000 photons for global illumination rendering.

The MacBook Pro rendering time is 7.43 sec
The Mac Pro rendering time is 1.65 sec

That's not surprising isn't it :-)

But now the strange thing:

The MacBook Pro is using 10 sec for shooting out the 750.000 photons but
the Mac Pro is using 52 sec for shooting out the photons.

So, why is this happen?


02 February 2009, 09:50 PM
Much like the thread you posted at ( about the speed differences between Maya and XSI, there's just not enough info to offer much advice or reason for this. It is not consistent with my experiences with XSI, so there must be either Scene settings, XSI configuration or something to do with the OS config/hardware to blame.

Based on what info you've provided:
- it could be XP SP3 vs SP2 (though my experience with both showed no notable difference between the two)
- it could be a slower harddrive in the MacPro, or some other hardware issue

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02 February 2009, 09:50 PM
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