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An extensive test of Battlefield 2, FEAR, and World of Warcraft on both Windows XP and Windows Vista has revealed that gaming performance is far better in Windows XP than in Vista, according to Bigfoot Networks. The results showed that Vista’s networking stack not only didn’t improve online game play, it often introduced more lag than its predecessor, Windows XP. The tests were performed on a variety of systems with the game on the same map, on the same servers, with the same number of players, at the same time. Testers were monitored to ensure that during gameplay they followed each other closely and were on the same team.
The performance data collected showed Vista online gaming performance is worse that online gaming in XP.
The white paper published by Bigfoot Networks gives two primary reasons why online gaming in Vista is worse.
First, Vista’s networking stack has gained a lot of new features, but as a result has gotten “fatter” and more bloated and convoluted than ever.
Second, Vista’s networking stacks does not fix any of the problems inherent in its interfacing that cause online games to under-perform. In fact, Vista’s new networking stack completely ignores improvements to the network protocol of choice: the UDP network stack.
The white paper also indicated that “Nearly every enhancement of the new Vista Stack is focused on TCP/IP throughput improvement, instead of UDP/IP latency improvement (which would help online games)”.
Another test was conducted by bypassing the networking stack on both Windows XP and Vista using LLR Technology with a Killer NIC network card. Yet again, the data showed the Vista network stack is inferior to the XP stack. Bypassing the Vista network stack yielded larger benefits in performance than bypassing the XP networking stack.
Bigfoot Networks also looked at the performance of some non-game applications to see how they performed, and discovered that they were equal or better in Vista that in XP.



Source:VISTA.BLORGE.com » Blog Archive » Online game performance is worse in Windows Vista than XP