Hope you enjoy!
x220t
i5-2520M (2,5GHz up to 3,2GHz with turbo, usually 3GHz both cores)
8GB RAM
PE4H + EC2C @ 30cm cable
EVGA
GTX460 1GB FPB (little stock OC!) and Gainward
GTX560 Ti 1GB
275.33 + modded inf from the first post
Booted with PE4H connected into Windows. No change has been made between those cards - just switched them!
dmcv4-dx10@1280x800 var
GTX460 (104,51FPS scene 4) and GTX560Ti (113,45FPS scene 4)
RE5 dx9-var@1280x800
GTX460 (116,3FPS overall) and GTX560Ti (124,6FPS overall)
Vantage
GTX460 ->
P10701 3DMarks
GTX560 Ti ->
P12323 3DMarks
3Dmark06
GTX460 ->
15855 3DMarks
GTX560 Ti ->
17182 3DMarks
No "real gaming benchmarks" like ingame Mafia 2 or L4D2. Just started Steam from my external HDD and L4D2 never starts then (have to reinstall).
Measured the fps of L4D2 for 120 seconds with fraps, playing a replay from some ESL match with the GTX560 Ti. 1920x1200, 8xCSAA, 8xAF, everything high -> Min 44, Max 180,
Avg 91.817
Steam needs some time to download L4D2 again, so I can bench with the GTX460. Won't have time to test it much more...
Probably I will return the GTX560Ti, because I just wanted to get sure, that my GTX460 isn't broke or something (micro lags), but that was just CoD

Would love to test an AMD card, but they won't perform that good as far as I read. Will be getting a GTX560 (non Ti), because of the price... maybe
L4D2 ESL Replay - 120 sec fps counting with fraps - 1920x1200, 8x CSAA, 8xAF, everything high (or highest if possible).
GTX560 Ti -> Min 44, Max 180,
Avg 91.817
GTX460 -> Min 37, Max 130,
Avg 65.783
Is this possible @ L4D2? I'm sure, that I have nothing changed or anything, but that is a huge difference. Same replay!