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[battlestar11]

I was wondering if Mass Effect 2 has a hard limit on the graphics memory needed to run the game: Is it possible to run ME2 well on an integrated graphics card? I have a pretty fast CPU and ram so I dont think that would be too limiting. How well is ME2 able to take advantage of multiple threads? 

[Gorath Alpha]

Video Card = 256 MB (with Pixel Shader 3.0 support). Supported GPU Chips: NVIDIA GeForce 6800 or greater(**); ATI Radeon X1600 Pro or greater. Please note that NVIDIA GeForce G.210, 310, 7100, 7200, 7300, 7400, 7500, 8100, 8200, 8300, 8400, 9100, 9200, and 9300; ATI Radeon X1300, X1550, HD 2400, 3100, 3200, HD 3450, HD 3470, HD 4200, HD 4250, HD 4350, and (probably) HD 5450 are below minimum system requirements. Updates to your video and sound card drivers may be required. Intel  and S3 video devices are not officially supported in Mass Effect 2.
(**)Two of the Geforce 6800s are worse than the next-lower Geforce game card, the 6600 GT, and should be avoided (6800 SE, 6800 XT).

Before the i3, 15, i7 versions of the Multicore Intel Core CPUs, none ever had access to any video RAM at all, only system memory stolen from the PC.  All by itself, that change in which they could share cache RAM, allowed them to catch the fastest of nVIDIA's onborad Chipset video chips' performance, but, of course, it's still not good enough at all.

[SSV Enterprise]

No "hard limit" but you aren't going to get any kind of good performance at all out of integrated graphics, regardless of processor power.