GTX 260m and GTS 360m=what for desktop?

Try this http://www.notebookcheck.net/Comparison-of-Graphic-Card...

The GTX 260M should perform similarly to a slightly underclocked desktop 9800 GT. The GTS 360M would perform like a slightly overclocked GT 240 GDDR5.

So the GTX 260m is better, but not by a huge amount, right?

From the link I posted
" NVIDIA GeForce GTS 360M
Same chip as the GTS 260M but with higher clock rates (412 versus 396 Gigaflops according to Nvidia). Delivers a high end performance with GDDR5 graphics memory."

It's a GTX 260m. If it was GTS the difference would be more obvious.

If you can not read the information that is in the link your self then here it is
GTX260m, 550 MHz, 112 - unified, DX10 | Memory Icon 950 MHz, 256 Bit
GTS360m, 550 MHz, 96 - unified, DX10.1 | Memory Icon 1800 MHz, 128 Bit
GTS260m, 550 MHz, 96 - unified, DX10.1 | Memory Icon 1800 MHz, 128 Bit
Obviously the GTX260m has more stream processor and a wider memory bus and therefore is faster than both GTS360m and GTS260m which is basically the same card.

This is why I reiterated that it was a GTX 260m.
Thank you for the information though!