For future reference
Summary and Conclusion Assuming you are running a contemporary benchmark or PC game at 2560 X 1600 (in my opinion, the resolution these high end cards are made for and are way overkill for anything less than that) and reasonable levels of antialiasing:
- A stock I7 920 is no better than a highly overclocked one if you are using a single card solution.
- A 5970 is roughly 30% faster than a GTX 480.
For a multi GPU GTX 480 or Radeon 5970 set up running with an I7 920, CPU frequencies will have no affect beyond 3.9 GHZ. At 3.9 GHZ or higher CPU frequencies:
- Dual SLI is 80% faster than single card.
- Tri SLI is 33% faster than dual SLI.
- Crossfire is 52% faster than single card.
- 5970 Crossfire is 7% faster than GTX 480 SLI.
- GTX 480 Tri SLI is 22% faster than 5970 Crossfire.
Overclocking an I7 920 from Stock 2.67 GHZ to about 3.9 GHZ will result in:
- A 7% improvement in Dual SLI.
- A 13% improvement in Quadfire.
- A 13% improvement in Tri SLI.
The above mentioned points are solely based on raw numbers. When it comes to a practical benchmarking experience, I would say that I have enjoyed working with nvidia cards a lot more than with ATI. In my opinion and according to my experience, nvidia drivers are much more mature, polished, and user friendly than ATI's. Both nvidia and ATI have game related bugs but nvidia is again superior in this regard. An example would be how several game menus lag ridiculously when AA is applied with 5970. Dirt 2 is an example, and so is Tom Clancy's HAWX (not included in this article). This is not the issue with nvidia cards. Similarly, microstuttering (Far Cry 2, HAWX) is a much more pronounced phenomenon with the 5970s than with 480s. As a matter of fact, I have never seen Far Cry 2 (2560 X 1600, 8XAA) so silky smooth and totally micorstutter free as I have with the GTX 480s and the new nvidia drivers. I hope that one day these issues will be sorted.
This is it for now. Thanks for reading this article!
Compliments of
http://benchmarkextreme.com