Rather than use a timedemo, I tested Crysis by playing the game and using FRAPS to record frame rates. Because this way of doing things can introduce a lot of variation from one run to the next, I tested each card in five 60-second gameplay sessions.
Also, I've chosen a new area for testing Crysis. This time, I'm on a hillside in the recovery level having a firefight with six or seven of the bad guys. As before, I've tested at two different settings, with the game's "High" quality presets and with its "Very high" ones, also.
The 4850 trips up a bit in Crysis, where it's just a hair's breadth slower than the 9800 GTX. CrossFire scaling looks to be rather disappointing, too, compared to SLI scaling. The 4870, though, comes out looking good yet again by virtue of having beaten up on the hundred-bucks-more-expensive GeForce GTX 260.
There has been some controversy surrounding the PC version of Assassin's Creed, but I couldn't resist testing it, in part because it's such a gorgeous, well-produced game. Also, hey, I was curious to see how the performance picture looks for myself. The originally shipped version of this game can take advantage of the Radeon HD 3000- and 4000-series GPUs' DirectX 10.1 capabilities to get a frame rate boost with antialiasing, and as you may have heard, Ubisoft chose to remove the DX10.1 path in an update to the game. I chose to test the game without this patch, leaving DX10.1 support intact.
I used our standard FRAPS procedure here, five sessions of 60 seconds each, while free-running across the rooftops in Damascus. All of the game's quality options were maxed out, and I had to edit a config file manually in order to enable 4X AA at this resolution.
The RV770 show continues with this unscheduled detour into controversial DX10.1 territory.