ID Software Doom 3 1.3	Source: id Software

Doom 3 takes advantage of the latest videocard technology and pushes the processing power of the CPU to its absolute limit. At its highest setting, Ultra quality, texture sizes pass the 500MB mark which means even tomorrow's videocards will have a hard time running everything. The frame rates in the game itself are locked at 60 fps so anything above that point is wasted. Each test is run three times with the third run being recorded.

ID Software Doom 3 1.3
LQ 640x480:	FPS	Ranking
Intel Pentium D 840	128.3
Intel Pentium D 940	138.4
AMD Sempron 3600+	91.4
AMD Athlon64 4000+	128.9
AMD Athlon64 FX-60	160.1
AMD Athlon64 X2 5000+	141
AMD Athlon64 FX-62	168.9
Intel Core 2 Duo E6600	194.5
Intel Core 2 Duo E6600 (Overclocked to 3.4 GHz)	267.5
HQ 1024x768:	FPS	Ranking
Intel Pentium D 840	110.7
Intel Pentium D 940	135.8
AMD Sempron 3600+	91.1
AMD Athlon64 4000+	127.9
AMD Athlon64 FX-60	159.3
AMD Athlon64 X2 5000+	141.6
AMD Athlon64 FX-62	158.6
Intel Core 2 Duo E6600	172.3
Intel Core 2 Duo E6600 (Overclocked to 3.4 GHz)	181.1

At the lower resolution the game is all CPU limited. The Intel Core 2 Duo E6600 flies when it is overclocked, even at stock speeds the processor is knocking on 200 fps. At the higher resolution, the videocard starts to limit the E6600 system slightly.

ID Software Quake 4 1.3	Source: id Software

Quake 4 is the latest shooter from ID and is based on the Doom 3 engine. Tweaked to for more eye candy, Quake 4 promises to be tougher on videocards and systems than its predecessor was. Quake 4 also does not have a 60 fps limiter like Doom 3, with the Ultra setting, graphic textures can surpass the 500MB mark! Each test is run three times and with the third run being recorded.

ID Software Quake 4 1.3
LQ 640x480:	FPS	Ranking
Intel Pentium D 840	127.3
Intel Pentium D 940	142.8
AMD Sempron 3600+	107.2
AMD Athlon64 4000+	142.8
AMD Athlon64 FX-60	153.1
AMD Athlon64 X2 5000+	150
AMD Athlon64 FX-62	161.4
Intel Core 2 Duo E6600	191.4
Intel Core 2 Duo E6600 (Overclocked to 3.4 GHz)	250.9
HQ 1024x768:	FPS	Ranking
Intel Pentium D 840	124.8
Intel Pentium D 940	141.3
AMD Sempron 3600+	106.9
AMD Athlon64 4000+	140.6
AMD Athlon64 FX-60	143.6
AMD Athlon64 X2 5000+	133.2
AMD Athlon64 FX-62	151.3
Intel Core 2 Duo E6600	177.6
Intel Core 2 Duo E6600 (Overclocked to 3.4 GHz)	231.6

Quake 4 is not as restrictive as Doom 3 at higher resolutions, the Intel Core 2 Duo E6600 easily outperforms the rest of the field. If you're a gamer you'll definitely see a performance boost from overclocking.