How does this Lenovo y580 compare to my old desktop?

[insomniac3334]

I'm thinking about getting a new laptop for school, mainly for programming/CS stuff and gaming on the side. I am interested to know how much of a dropoff, if any, I will experience in general performance with regards to my old gaming rig. This Y580 is a great deal, for only $800 with my student discount.

My old gaming desktop:
Intel Core 2 Quad Q9400 @ 2.66GHz
EVGA GeForce 8800GT 512mb GDDR3
6GB DDR2-6400
640gb 7200rpm WD Black HDD
750-watt Corsair PSU
Windows 7 64-bit Home Premium

Lenovo Y580:
Intel Core i5 2310m 2.5GHz
nVidia GeForce GTX 660m 2GB GDDR5
500GB 7200rpm HDD
6GB DDR3-1600 RAM
Windows 7 Ultimate 64-bit (my free student copy)

Will the GTX 660m possibly be an improvement over my old 8800GT 512mb? And how do the CPU's compare?

 

[nbelote]

Your desktop's CPU is more powerful than that laptop, by about 25% give or take. On the flipside, that 660m will trounce your old 8800GT. You'd probably notice an increase in FPS in games, but a decrease in single-threaded performance. You could negate some of that by putting your OS and primary apps on a SSD, however.

Edit: I would go for it, if I were you, especially if the LCD in that laptop is 1080p. That's a pretty good deal for a pretty good laptop. You could upgrade the CPU later if you wanted, though laptop CPUs cost more than their desktop counterparts and laptops are a heck of a lot more time consuming to upgrade.