Put ur x64 Bit system to the test...

phatrx7

I'm sure someone has posted these downloads somewhere, but... AMD has a gaming download section for x64 Bit/x64 Bit enhanced games and demos, as well as patches for converting 32 Bit games to x64 Bit.

Also on there is a demo called "DreadNought" demo .. this demo, while very fun to play too, is for comparisons between 32 Bit and x64 Bit in performance and quality. It has 5 gaming modes, 4 that pertains to the comparisons
(1) x64 Bit enhanced mode
(2) 64 Bit Mode (uses 64 bit executables for comparing against 32 bit)
(3) 32 Bit Mode (uses 32 bit executables for comparing against 64 bit)
(4) 32 Bit LAA Mode (32 bit executables that are Large Address Aware)
(5) Paintball Mode (can be used in 32 or x64 bit)

Download @: http://amd64andfarcry.gamedaemons.net/dreadnought.asp
(need to register to download, only takes a sec.)

Now.. for "x64 Bit Enhanced Mode" .. you need a "nice system" .. recommend requirements are very high, but they are just recommened requirements. I ran it on my Athlon64 4000+ / 1024mb OCZ DDR500 / nVidia 7800 GT PCIe on a Asus A8N SLi mainboard and I can tell it's wants more! Overall my system ran it great, but I can tell it want's the memory! I personally would'nt recommend trying the x64 Bit Enhanced mode w/ less than 1024mb of memory.

Other things listed @ AMD64 downloads are:
x64 Bit FarCry patches
x64 Bit ut2004 patches
links to x64 bit enhanced games

**Also.. HL2/CSS will soon have x64 Bit patches @ AMD64 downloads!!!

Nosferatu

I ran it on the highest settings and it ran great. I was very impressed, I didn't feel any lag which really surprised me.