My Toshiba usually generates playable framerates at the least. I've gotten 50-60fps with most every compatible game I've tried, and sometimes even without speedhacks. My GPU rarely seems to be my bottleneck and can usually handle higher than native resolutions. While sometimes that's only a little higher, other times as much as 2048x2048 (while still maintaining 60fps).
I've had no problems playing - Castlevania: CoD, Dark Cloud, Devil May Cry, DOT hack: Infection, DBZ, Dynasty Warriors/Warriors Orochi, Final Fantasy, God of War, Kingdom Hearts, Max Payne, Onimusha (2 & Dawn of Dreams), Resident Evil 4, Wolfenstein, Romancing SaGa, Tales of the Abyss, Time Splitters, Way of the Samurai 2 and XIII.. If there's anything you're curious about that I haven't mentioned, feel free to ask. After all, there's a lot more I can play.
The Lenova's bottleneck will be what is usually the bottleneck with PCSX2; the CPU. Most games only need
so much GPU power for native resolution. Although you may encounter a few games or some particular parts/scenes in games that demand more from your GPU, the processor's clock rate almost always is what keeps you from fullspeed. I can say, that 5650 should
out-perform my 230M. Basically, if the i5 runs at 2.8Ghz, you should expect the same, if not, better performance than what I get. Without Turbo Boost, the Lenova could possibly get lower FPS, even with a better GPU.
BTW - Sorry I missed it, but there's no reason PCSX2 wouldn't work with HDMI.