SLI vs. CrossFire, Part 2 – High-end multi-GPU scaling
Serious Sam Second Encounter HD (2010) 
Serious Sam is the title of a series of first-person shooters created by the Croatian development team Croteam. It follows the adventures of its hero Sam “Serious” Stone and his fight against the forces of the extraterrestrial overlord Mental who seeks to destroy humanity. Its gameplay is a throwback to early first-person shooters like Quake and Doom with the twist of being set in wide-open environments with large groups of enemies attacking at any time, and there are many hidden areas and treasures to find and puzzles to solve. Serious Sam features cooperative gameplay and allows for split screen action supporting up to 4 players.
Serious Sam: The Second Encounter was remade as “HD” using Serious Engine 3. It was released on April, 2010 for PC. Besides updated visuals, new game modes including “Co-op Tournament” and “Survival” for single player, were introduced in the remake. Serious Sam 3 is currently in development by and is expected to release this year. We use the basic 3 “ultra” presets for benching Serious Sam: The Second Encounter HD. There is possible further fine-tuning which will make the game even more demanding, but we chose the “ultra” presets with only one higher GPU setting, to allow for testing beyond 1920×1080.
We test first at 1920×1200 resolution:
We see good scaling with the Radeons beating their GeForce counterparts. And now at 2560×1600 with the same ultra presets:
The Radeons pull even further ahead. Finally at 5760×1080:
Serious Sam: The Second Encounter HD on the Serious 3 engine is quite demanding and yet all of our top configurations play it satisfactorily using the game’s built-in “ultra” presets except for the HD 6970 at super-widescreen resolution. Of course, we cannot test the GTX 580 at 5760×1080 as SLI (or a GTX 590) is required to run Surround. The Radeons are similarly benefited by running them in CrossFire and although they do not scale particularly well.
Thanks for this article. It was a very interesting read
I’m really looking forward to the next parts in the series. Overclocking and potential CPU-bottlenecking in Single-Card VS SLI is something I’ve been wondering about for a long while. And also microstuttering, I’ve never experienced it myself, but it scares me enough to make me cautions of buying another GTX 570 to SLI.
And oh, is it possible to get Battlefield 3 Beta added in your test-games?
Thanks for the feedback. I would not be afraid of getting a second GTX 570 for SLI. Nvidia (and AMD) work to minimize micro stuttering in the drivers and it is something that you can generally further alleviate by backing down on settings if you notice it.
I plan to add BF3 to my regular benching suite after it is released. The beta is only going to be valid for less than a month.
Thank you very much for this! It isn’t easy finding benchmark results with newer drivers. Not for a quad-SLI or quadfire setup that is. Cheers!
Err, strike the quad-SLI and quadfire part, but all the same – it is nice to find more up to date benchmarks!