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Desktop benchmarks vs mobile benchmarks the same?

Last response: in CPUs
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January 23, 2011 3:07:28 PM

It seems all the benchmarks for GPU's and CPU's on this site are all for desktops.

I am looking at an alienware MX17 R3 and the processor is the 2820 QM and the GPU is the GTX 460M. Are the benchmarks on this site the same for mobile?
a b à CPUs
January 23, 2011 3:37:10 PM

The laptop parts are usually either:

A) A lower clocked desktop part, like the 2820QM. It is a quad core downclocked to 2.3Ghz to use less power.

or

B) A weaker part due to a naming scheme, like the GTX 460M. It is basically the same as the desktop GTS 450, instead of the desktop 460.

This site is for enthusiasts, and any good enthusiast knows a laptop can't replace a desktop. ;) 
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a c 479 à CPUs
January 23, 2011 4:42:46 PM

Laptop GPUs are slower than their desktop counterparts sometimes a lot slower.

While doing some research I've found out that the Mobility HD 5870 is about as powerful as the desktop version of the HD 5770. If you compare the desktop version of the HD 5870 and HD 5770 you will notice the huge difference between those two models.

You need to remember that laptops have to use lower powered components otherwise they would draw too much power (unless you don't mind your laptop to last for less than 2 hours on battery) and there's heat to consider. You wouldn't want your laptop to melt while playing Crysis right?
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January 23, 2011 5:07:44 PM

Whats the best source for easily seeing the difference in performance between the mobile and desktop parts?
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a b à CPUs
January 23, 2011 6:11:41 PM

It's tough, as most sites don't review mobile parts.

The best I could find was a review with the GTX 460M in SLI, and they compare it to other mobile parts.

http://www.tomshardware.com/reviews/geforce-gtx-460m-av...

The 460M should be slightly slower than a GTS 450. They both have 192 cuda cores, but the mobile part is clocked a little lower.

http://www.tomshardware.com/reviews/geforce-gts-450-gf1...

If you want to see how the 450 compares to other cards.
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January 24, 2011 2:48:19 AM

Haserath said:
It's tough, as most sites don't review mobile parts.

The best I could find was a review with the GTX 460M in SLI, and they compare it to other mobile parts.

http://www.tomshardware.com/reviews/geforce-gtx-460m-av...

The 460M should be slightly slower than a GTS 450. They both have 192 cuda cores, but the mobile part is clocked a little lower.

http://www.tomshardware.com/reviews/geforce-gts-450-gf1...

If you want to see how the 450 compares to other cards.


Im showing the 460m to have more cuda cores than the gts 450 but with a slower clock speed according to the nvidia website. How can we expect benchmarks to change knowing this?

Nevermind... I was looking at an OEM version of the gts 450 that was apparently different...
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