Which is the better laptop graphics card?

Okay, so I have found myself faced with four different options. The first option is the NVIDIA GeForce GT 425M, and the second is the GeForce GT 525M, which is the graphics card that u get w/ the $800 base configuration of the newest version of the Dell XPS 15 laptop. The third option is the AMD Radeon HD 5650M, which seems to be a very popular GPU these days, and is available in a $780-ish VAIO I am looking at. The fourth and final option is the AMD Radeon HD 6630M, which is apparently brand new, and theoretically a lower-clocked 5650M. The 6630M comes in a VAIO C series that is around $830-880-ish depending on the hard drive configuration. I will tell you up-front that I have absolutely no interest in overclocking any of these. I don't really give a flying one about "high-end" graphics cards, because I consider graphics that play all the games I wanna play on the settings I like to be top-tier anyways.

The first question I have is which should perform best in the following games at a resolution of 1360x768 or higher at what settings ( as well as games w/ similar system requirements) and is it relatively futureproof as a mid-range card:

- Call of Duty: Modern Warfare 2

- Call of Duty: Black Ops

- BioShock 1&2

- Mass Effect 1&2

- Crysis 2

- F.E.A.R. 1,2&3

- Dragon Age II

- Singularity (probably doesn't require much of a powerful comp)

- The Witcher 2

The second question I have is: I own an HP Pavilion Elite e9260f desktop PC. It has a quad-core first-generation Intel Core i5-750 @ 2.66 GHz, 8GB DDR3 RAM, 1 TB hard drive, SuperMulti DVD burner w/ LightScribe Technology, Wireless LAN 802.11 A/B/G/N, NVIDIA GeForce GT230 w/ 1.5 GB dedicated graphics memory + DVI and HDMI capabilities + Microsoft DirectX 10.1 support, and Genuine Windows 7 Home Premium 64-bit OS.

What performance will these cards have, respectively, with a dual-core second-generation Intel Core i5-2410M with Turbo Boost 2.0, compared to this current PC I just mentioned?

To be honest if you wanna play games I'd recommend a new video card for your desktop. Would be a much much more powerful gaming system. AutoPilotOn

indeed

I understand that gaming on a desktop is considered the best way to go by some, but I have already decided that I would like to get a laptop to play games on, so what would b the best option for me?

The GPUs are all very similar, but to rank them I would put them in this order:

1. HD 6630M
2. HD 5650M
3. GT 525M
4. GT 425M

With any of the top 3, you could play Black Ops on High settings, Modern Warfare 2 on med/high, Crysis 2 on med/low settings. The 425M would be a bit lower settings.

Comparing these cards with the graphics card in your current laptop, I would expect somewhere around 20% better performance from the newer ones.