Found this reference on price per performance and FPS ratio from 'Benchmarks Reviews' for higher end
cards only. They then discussed the top cards
vs each other in their review obviously from their own benchmarks.
Cost Analysis: 3DMark Vantage GPU Test (1920x1200)
•$242 Radeon HD 6870 1GB costs $13.37 per FPS
•$255 GeForce GTX 470 1GB costs $12.94 per FPS
•$324 Radeon HD 5870 1GB costs $14.86 per FPS
•$437 GeForce GTX 480 1536MB costs $17.27 per FPS
•$500 Radeon HD 5970 2GB costs $14.66 per FPS
•$500 GeForce GTX 580 1536MB costs $14.79 per FPS
•$484 Radeon HD 6870 CrossFireX costs $13.79 per FPS
This is the conclusion from Benchmarks review, keep in mind they didn't include some cards like AMD 6850, 6950 or 6970 nor Nvidia GTX 560 & 570 that are missing from above.
"Beginning with frame rate performance, the NVIDIA GeForce GTX 580 video card competes at a level comparable to the dual-GPU ATI Radeon HD 5970 and occasionally matched up well against a pair of AMD Radeon HD 6870's in CrossFireX configuration. All three of these options share the same $500 price point, and both offer similar DirectX 11 functionality. In comparison to the Fermi GF100-powered GeForce GTX 480, the GF110 proved that GeForce GTX 580 was far more than an added streaming multiprocessor and clock speed increase; it was the perfect blend of tessellation, shaders, and texture units we first witnessed with the GF104 inside GeForce GTX 460.
In our DirectX 10 tests, 3D Mark Vantage had the GeForce GTX 580 trailing slightly behind the Radeon HD 5970 and CrossFire 6870's in Jane Nash, but then it comes back and matches or exceeds them in New Calico. Crysis Warhead matches the GeForce GTX 580 to the Radeon HD 5970 equally, and both trail behind the Radeon 6870's in CrossFire. In our DirectX 11 tests, Aliens vs Predator puts the GeForce GTX 580 video card behind the Radeon 5970 and CrossFire 6870's, and then positions it between them for Battlefield: Bad Company 2. Then BattleForge, Lost Planet 2, and Mafia II all report the GeForce GTX 580 even with, or outperforming, the Radeon HD 5970 and CrossFire 6870's. Testing with Metro 2033 the GeForce GTX 580 takes a turn South, and both Radeon contenders surpass it. Tom Clancy's HAWX2 clearly works better with GeForce tessellation, putting the GTX 580 and all other NVIDIA products way ahead of AMD Radeon video cards. Finally, the Unigine Heaven benchmark confirms the trends we've seen in all the tests leading up to this, and position the GeForce GTX 580 slightly ahead of the dual-GPU ATI Radeon HD 5970 and trailing shortly behind a pair of AMD Radeon HD 6870's in CrossFireX."
I find myself reminded that this video card matches performance with a dual-GPU Radeon HD 5970 that was priced at $700 for the longest time, and the few remaining models have come down to Earth. And while the GTX 580 proves itself a contender against the 5970, there's still the small matter of two AMD Radeon HD 6870's combined into CrossFire to consider. This will ultimately be a decision for the consumer, who either wants the best overall performance a single card can offer along with several proprietary features benefits only available from NVIDIA, or they'll settle for two lesser products that produce comparable frame rates. Unqoute
Pretty interesting with conclusion of the review. Unbiased. The clear winner price per performance ratio with most FPS would be the AMD 6870 SLI configuration when price is foremost important. Prices are dropping but in ratio so this would still hold true.
I'd like to add, not included in this review is two GTX 560's or AMD 6950's if priced at $250 each anyway would be second best choice for most bang for your buck for higher FPS than one GTX 580.
Followed third best per dollar/FPS at $500 priced evenly would be a single GTX 580.
Now the GTX 580 is better than a GTX 570 and slightly better than an AMD 6970 and two of these cards in SLI or crossfire would cost more than a single GTX 580 therefor would not beat out the GTX 580 when comparing price per performance ratio
I'd like to add this graph they provided again not all cards are being represtened.
Naturally everyone has a budget, psu or system limitations they will keep in mind when choosing. Your situation will dictate which cards you'd be more interested in and can afford or system can handle which will vary person to person. This was only on the higher end cards vs price performance and not the lower end cards in this post.
I kind of wish they'd done all the cards price per FPS with their benchmarks. If anyone can find this info please post it. Compudaze, I'd be interested in knowing which benchmarks did you come by your graph from?