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 Post subject: Centrino vs P4 on FPU?
PostPosted: Wed Mar 02, 2005 12:21 pm 
8086
8086

Joined: Fri Aug 27, 2004 10:58 am
Posts: 43
Hey guys... considering getting myself a Centrino based Laptop since I like the portability of it more. Lots of places claim that the 2.0ghz centrino performance is equivilant to a 3.0ghz P4... not sure if this is true. I do a lot of 3D rendering (I work in VFX) which involves a lot of raytracing, and may do some of that on my laptop. Raytracing tends to be very heavy on floating point, and I was told (but can't confirm) that the centrino tends to have a poor floating point performance. Is that true? Tried to find some specific benchmarks (FPUMark benchmarks, etc..) but can't really find any. Anyone know of any good sites that do a complete breakdown of benchmarks of Centrino (hopefully newer ones like 2.0ghz or better), versus P4s?


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PostPosted: Wed Mar 02, 2005 12:27 pm 
Coppermine
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Joined: Wed Nov 17, 2004 12:12 pm
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Location: In the Pyro-Gx
If you are looking for battery life, Centrino is the only way to go. If you are looking for preformance, then a P4 may be the way to go, but you are taking a major cut in battery life. While most Centrino notebooks sport 4-5 hour batteries, most of the P4 notebooks have 1-2 hour batteries.


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 Post subject:
PostPosted: Wed Mar 02, 2005 1:23 pm 
8086
8086

Joined: Fri Aug 27, 2004 10:58 am
Posts: 43
Actually, I'm very familair with the battery life on the centrino, which is why I was considering it in the first place. I am simply wondering more specifically about the loss in performance I would experience... specifically, floating point performance.


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 Post subject:
PostPosted: Wed Mar 02, 2005 2:57 pm 
King of All Voodoo2 Cards
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Is Raytracing bandwidth intensive?

If so the Pentium M would suffer against a Pentium 4 because of the lower bus speed and slower memory.

Read here for a few more performance specs:

http://techreport.com/reviews/2005q1/df ... dex.x?pg=1


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 Post subject:
PostPosted: Wed Mar 02, 2005 3:52 pm 
8086
8086

Joined: Fri Aug 27, 2004 10:58 am
Posts: 43
Thanks flytrap... that is exactly what I needed to know...

Check this out:

http://techreport.com/reviews/2005q1/df ... ex.x?pg=16

POV is a pure raytracer, so it proved to be a perfect FPU benchmark.


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