Doom 3 - Multi-Threaded Tests	Source: id Software

Doom 3 is the most advanced OpenGL game to date. It takes advantage of the latest videocard technology and pushes the processing power of the CPU to its absolute limits. 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 and with the third run being recorded. Prime95 was running in the background to simulate load on a one core.

Prime95 + Doom 3
LQ 640x480:	FPS	Ranking
Intel Pentium D 840	84.4
AMD Athlon64 4000+	126.8
AMD Athlon64 FX-60	147.8
AMD Athlon64 X2 5000+	129.1
AMD Athlon64 FX-62	121.8
Intel Pentium D 940	129
Intel Pentium D 940 (Overclocked to 4.4 GHz)	143.8
HQ 1024x768:	FPS	Ranking
Intel Pentium D 840	77.5
AMD Athlon64 4000+	124
AMD Athlon64 FX-60	126.4
AMD Athlon64 X2 5000+	128.7
AMD Athlon64 FX-62	136.8
Intel Pentium D 940	99.3
Intel Pentium D 940 (Overclocked to 4.4 GHz)	115.3

The Intel Pentium D 940 reacts much better to the Prime95 test than the Pentium D 840 does in Doom3. Overclocking puts the Pentium D 940 processor in AMD Athlon64 range, and that's not something we were necessarily expecting.