Unreal Tournament 2003	Source:Epic

Unreal Tournament 2003 is the sequel to 1999's multiple 'Game of the Year' award winner. It uses the very latest Unreal Engine technology - where graphics, sound and game play are taken beyond the bleeding edge. Unreal Tournament 2003 employs the use of Vertex as well as Pixel Shaders and it's recommended that you use a DirectX 8 videocard to get the most out of the game.

UT2003 - 640x480
Flyby:	FPS	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	258.41
2x 512MB Crucial Ballistix PC2-5400 (200/533)	258.46
2x 512MB PQI Turbo PQI25400-1GDB (200/533)	250.47
2x 512MB PQI Turbo PQI25400-1GDB (247/660)	304.08
Botmatch	FPS	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	84.56
2x 512MB Crucial Ballistix PC2-5400 (200/533)	86.35
2x 512MB PQI Turbo PQI25400-1GDB (200/533)	82.64
2x 512MB PQI Turbo PQI25400-1GDB (247/660)	100.32

In UT2003 we see that memory timings do have more of an affect on framerates, but I highly doubt you'd notice it while gaming.

Unreal Tournament 2004	Source: Epic

Unreal Tournament 2004 is the sequel to the highly popular UT2003 and uses the very latest Unreal Engine technology. Unreal Tournament 2004 employs the use of Vertex and Pixel Shaders and it's recommended that you use a DirectX 9 videocard to you plan to play competitively.

UT2004 - 640x480
dm-rankin	FPS	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	92.1
2x 512MB Crucial Ballistix PC2-5400 (200/533)	92.014
2x 512MB PQI Turbo PQI25400-1GDB (200/533)	91.24
2x 512MB PQI Turbo PQI25400-1GDB (247/660)	104.5
as-convoy	FPS	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	58.72
2x 512MB Crucial Ballistix PC2-5400 (200/533)	58.69
2x 512MB PQI Turbo PQI25400-1GDB (200/533)	58.65
2x 512MB PQI Turbo PQI25400-1GDB (247/660)	67.36
ctf-bridgeoffate	FPS	Ranking
2x 512MB Mushkin PC2-4200 (200/533)	127.16
2x 512MB Crucial Ballistix PC2-5400 (200/533)	127.52
2x 512MB PQI Turbo PQI25400-1GDB (200/533)	126.5
2x 512MB PQI Turbo PQI25400-1GDB (247/660)	144.7

UT2004 behaves very much like UT2003, and here we see that all memory modules get about the same framerates. Overclocking boosts things quite a bit for the Turbo PQI25400-1GDB DDR-2 RAM.