Frame Rating: GeForce GTX 660 Ti and Radeon HD 7950
Sleeping Dogs (DirectX 11)
Welcome to Hong Kong, a vibrant neon city teeming with life, whose exotic locations and busy streets hide one of the most powerful and dangerous criminal organizations in the world: the Triads. In this open world game, you play the role of Wei Shen, an undercover cop trying to take down the Triads from the inside out. You'll have to prove yourself worthy as you fight your way up the organization, taking part in brutal criminal activities without blowing your cover. Torn between your loyalty to the badge and a criminal code of honor, you will risk everything as the lines between truth, loyalty and justice become permanently blurred
Our settings for Sleeping Dogs
At these settings Sleeping Dog is very hard on current graphics cards, even ones with the power of the GTX 660 Ti and Radeon HD 7950. Just as we saw on many previous titles though, the CrossFire combination of two HD 7950s are producing much lower observed frame rate per second averages after removing the runt frames.
Both single cards and the GTX 660 Tis in SLI all have very consistent frame times in our graph of data above; only the CrossFire results stand out with the wildly swinging results.
The GTX 660 Ti scales from about 37 FPS average over the entire run to something near 70 FPS by adding in the second card, but the same cannot be said for AMD's Radeon HD 7950.
Even though the frame variance levels of the HD 7950s in CrossFire are consistent through much of the performance testing, once we hit the 90th mark the levels skyrocket away from either single GPU or even the SLI setup.
More solid scaling results from NVIDIA's SLI technology and more runt problems for CrossFire...
Even though the NVIDIA SLI results do start to see some spikes and hitches in performance from inconsistent frame times, the results pale in comparison the to mess that CrossFire shows up as. Both single cards show very nice results with the edge going to the AMD Radeon HD 7950.
By nearly doubling the frame rate, the GTX 660 Ti SLI configuration looks much better than the AMD single or dual-GPU options using the HD 7950.
Only the single card setups here truly offer a 100% stutter free gaming experience with both SLI and CrossFire showing some higher than expected frame time variance.
The name of the game for 5760x1080 testing is more drops and runts from the AMD HD 7950 cards running in CrossFire.
Even though the SLI results aren't as pretty as we would liked to have seen, the AMD CrossFire setup is dropping frames throughout our play testing.
These two images compare individual run data from CrossFire and SLI - by losing nearly every other frame the CrossFire data looks much better under FRAPS than the game actually sees!
SLI does scale well again (from 24 FPS to 45 FPS) though it does droop down towards single card performance levels at the tail end of this minimum FPS percentile metric.
Interestinly, because we take AWAY the dropped frames for this calculation, the HD 7950 CrossFire results look pretty good - but don't forget to include the data above to get the whole story. Clearly the SLI solution does introduce some stutter possibility with frame variance but it doesn't even exceed 5 ms until we get past more than 90% of the rendered frames.
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