itzmheck,
Here's a link to a long thread about Doom3.
http://forum.thinkpads.com/viewtopic.php?t=2588&start=0
I'd say that Doom3 and HL2 (throw CoD in for good measure) are the most taxing games out there in terms of pushing a ThinkPad to its limit. Keep in mind that none of the ThinkPads should be considered gaming machines, as IBM tends to focus more on stability, battery life, and heat dissipation than say, Alienware, Sager, etc.
Anyhow, here's some of what I posted in the thread I've given you the link for, which will give you quite a bit of detail and background on performance with Doom3 and IBM and modded ATI drivers. Consider these results in the same ballpark for CoD and HL2. As far as older games (pretty much any DirectX 7 or 8 game), it runs them very well (UT, Serious Sam, Tron, etc)...
Daniel.
"I performed benchmarks using the latest IBM-supplied ATI drivers and the beta driver above. I also tested various over-clocking settings for my system. Here's what I've got, in a nutshell:
My system is a T42p 14" 2373-GRU with 1GB RAM and FireGL T2 (see sig.)
ATI/IBM driver and Default FireGL clocking (317.25/202.50):
3DMark01se=9624
3DMark03=2628
Doom3TimeDemo(800x600, Med. Qual)=18.1 fps
Doom3TimeDemo(1024x768, Med. Qual)=13.5 fps
ATI/4.9Beta driver and Default FireGL clocking (317.25/202.50):
3DMark01se=9603
3DMark03=2623
Doom3TimeDemo(800x600, Med. Qual)=23.3 fps
Doom3TimeDemo(1024x768, Med. Qual)=16.5 fps
ATI/IBM driver and O/C FireGL clocking (420/234):
3DMark01se=
11701
3DMark03=(Locked Up)
Doom3TimeDemo(800x600, Med. Qual)=21.2 fps
Doom3TimeDemo(1024x768, Med. Qual)=16.1 fps
ATI/4.9Beta driver and O/C FireGL clocking (420/234):
3DMark01se=11464
3DMark03=(Locked Up)
Doom3TimeDemo(800x600, Med. Qual)=
27.1 fps
Doom3TimeDemo(1024x768, Med. Qual)=(Locked Up)
ATI/IBM driver and O/C FireGL clocking (348/228):
3DMark01se=10553
3DMark03=2910
Doom3TimeDemo(800x600, Med. Qual)=19.4 fps
Doom3TimeDemo(1024x768, Med. Qual)=14.6 fps
ATI/4.9Beta driver and O/C FireGL clocking (348/228):
3DMark01se=10564
3DMark03=2905
Doom3TimeDemo(800x600, Med. Qual)=25.1 fps
Doom3TimeDemo(1024x768, Med. Qual)=18.0 fps
ATI/IBM driver and Default FireGL Clocking:
Doom3TimeDemo(1024x768, Hi Qual)=13.0 fps
Doom3TimeDemo(1024x768, Ultra Qual)=10.4 fps
Doom3TimeDemo(640x480, Hi Qual)=20.6 fps
ATI/4.9Beta driver and O/C FireGL clocking (348/228):
Doom3TimeDemo(1024x768, Hi Qual)=17.0 fps
Doom3TimeDemo(1024x768, Ultra Qual)=15.1 fps
Doom3TimeDemo(640x480, Hi Qual)=28.9 fps
Bottom line is that the ATI Catalyst 4.9 Beta driver mod/patch (as described in the link above by one of our fellow users) when combined with some overclocking, results in the best scores. I'd say you'll get up to a 9 fps improvement over the standard drivers and default clocking. The driver change accounts for about 5 fps itself, so ATI has really tuned it for Doom3. However, the other benchmarks were either equal or in some cases somewhat slower with the Doom3-tuned driver. I basically wrote a script that changes this driver file on the fly before doom launches (don't need to reboot to switch the driver between the IBM-supplied and beta versions... it's just one file). I couldn't sustain the higher overclocking of the FireGL (420 core/234 memory) that the other user of the T41p described. My system would lock up with both 3DMark03 and Doom3 TimeDemo when overclocked that high. My system sweetspot (for stability and performance) seems to be the new 4.9Beta driver and overclocking the FireGL to (348 core/228 memory) for the best combination.
So basically, for those folks who don't want to fuss with their systems' drivers or clocking, 18 fps at 800x600 with medium quality settings is about what you can expect (applies to FireGL T2 w/128MB, because of the textures, you'll probably see slightly slower results on a MR9600 w/64MB, and you're in big trouble if you're using anything less). And if you don't mind 640x480 with hi quality settings, you'll get about 28.9 fps. So it's moderately playable with the default driver/clocking at 800x600, but the beta driver and overclocking will give you enough extra fps to make the game considerably smoother, IMO. "