Guilty Gear X
As you can see there is a problem with the graphics showing properly. Also there is nothing shown ingame unless you hold down End (it doesn't run smooth, it seems to skip a lot of frames to try to catch up with the rendering), and it doesn't run at 45fps.
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Old Comp: ASUS CUV4X-E, Pentium III 1.0 GHz, 512MB pc133 SDRAM, All-In-Wonder Radeon, Toshiba DVD-Rom, Lite-on LTR-24102B, WD 30GB, WD 100GB, WD 120GB, WD 120GB.
New Comp: ASUS A7N8X-DX, AMD Athlon XP 2700+, Cooler Master Aero7+, 2x 512MB pc3200 DDR, ATI Radeon 9800 Pro 128MB (omega's build of 4.12), Pioneer DVR-104, Lite-on LTR-52327S, WD 60GB, WD 160GB, WD 200GB, WD 250GB.