AMDZone first tested 64 bit UT2004 under Linux almost a year and a half ago. The wait for a 64 bit client for Windows ended yesterday as quietly it was released. They test this new client on the GeForce 7800GTX, the Radeon X850XT PE, under 32 bit running Windows XP, and under 32 and 64 bit running XP 64. From the results they are able to not only see how 64 bit has progressed, but also how a 32 bit app runs under XP64, and they also get to look at the state of the latest 64 bit drivers from Nvidia and ATI.
It has been now more than two years since the launch of Athlon 64, as AMD brought 64-bit technology to the consumer and to the mainstream and as such also has been touted the performance benefits of it. However, in the gaming market we have yet to see a product utilize 64-bit technology still, instead looking to the future. While there have been a few bonuses such as the Far Cry patch for those users, and AMD's processors are of the fastest processors on the market, not just for gaming, there has yet to see a benefit in 64-bit. Check out the full report over here.