20.
Real Gaming Challenge: Intel vs. AMD
"different games have different "thresholds" that must be maintained in order to keep play fun and smooth."
Pentium 4 640 (3.2GHz) / Athlon 64 3500+ (2.2 GHz)
1 Go, GF7800GTX, Sound Blaster Audigy 2
"We'll be looking at overall performance, but we're not really concerned with average frames-per-second this time around. We're looking at how consistently each CPU is able to maintain a frame rate that makes for a smooth experience.
Intel has a benchmarking analysis program out now where they took user data from a bunch of gamers and discovered that it's not having a really high average FPS that matters; it's consistency. Above 60fps, gamers didn't really feel that the play experience was improved. But when the game dropped below 45fps, it started to impact how much fun they had. But Intel only used first-person-shooters (FPS) in its research. While popular, their methodology does leave out other genres.
We agree with this, in principle, but different games have different "thresholds" that must be maintained in order to keep play fun and smooth. We think 45fps is a good low threshold for FPS games, but a real-time strategy game, for example, requires a lot of interaction with a static interface and can be perfectly enjoyed as long as the frame rate stays above 30fps. Some competitive online games are a bit more demanding. As we get into the performance analysis of each game, we'll discuss these target frame rates. The point to take away is that it's critically important how often each CPU is able to maintain performance above this target speed.
With each game, we'll present three graphs. The first will show the results (frame rate over time) for all three benchmark runs on the Athlon 64 system, the second the Pentium 4 system. The third graph takes the average of all three runs for each system and presents them on the same graph, so you can easily compare the overall performance of one system against another.
[...]
The results speak for themselves. The average frame rate across all six games for the Athlon 64 system is 61fps, while the Pentium 4 averaged 54fps. That’s a 13% difference – not tiny, but not large enough to bowl us over. What is more important, we feel, is how often a game runs slowly enough that you can feel it. This methodology is consistent with the one used by a new performance analysis tool in the works at Intel. We picked arbitrary performance thresholds, but these are numbers based on years of game playing experience. We picked frame rates at which you actually notice an impact on how the game feels, not the absolute minimum required to play and enjoy a game. This is where the Athlon 64 really kicks the Pentium 4 in the teeth. Our P4 system spent almost a third of the time, across all games, beneath our target minimum FPS. The Athlon 64 system, on the other hand, spent only 14% of its time there. This is a difference of a whopping 121%!,”
http://www.extremetech.com/article2/0,1697,1854733,00.asp
[Posted by: DMA | Date: 11/11/05 08:17:04 AM]