desktop GPU vs. Laptop GPU

[Dani360c]

Just a Quick Question i was wondering about, how does mobile GPU's compare to Desktop GPU, especially GTX660 vs. GTX660m?

I have a GTX660m in my laptop and it seems to be lacking alot compared to the desktop equivalent from what i have seen and experienced

[Godlygamer23]

The desktop version is more powerful than the mobile version. It has to do with the constraints that NVIDIA and AMD have to work around.

[I'm Batman]

Desktop GPU's fly on top of their mobile versions

[s3ns3]

I have a GTX660m in my laptop and it seems to be lacking alot compared to the desktop equivalent from what i have seen and experienced

a lot indeed. equivelent by name maybe

http://www.geforce.com/hardware/notebook-gpus/geforce-gtx-660m/specifications

 

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-660/specifications

[Mooshi]

Your uber leet top of the line mobile GPU is completely destroyed by a mid-range desktop graphics card.

[Glenwing]

The mobile GPUs are not at all related to the desktop cards that use the same number.  The number only notes their relative position in the lineup.  They are all based on the Kepler architecture together (Actually that's not even true lol), but there is no special relationship between the GT 650M and the GTX 650 for example.  The GT 650M is an underclocked GT 640 sometimes with GDDR5.  The GTX 680M is an underclocked GTX 670.  The GTX 670M isn't even part of the 600 series in reality, it is based on the Fermi architecture 500 series.  It's basically the GTX 580M renamed, if I remember correctly.  The "desktop equivalent" of the GTX 660M isn't the GTX 660, it's the GT 640 still (but less underclocked than the 650M, and always with GDDR5).

 

In short, they don't name the GTX 670M because it is specially related to the GTX 670.  They name it that because it is next weakest card after the GTX 680M.