Yeah, I'm pretty sure that was sarcasm.
Just to revisit the point about what's needed for console parity: Sony never officially stated the clock speed for the PS4's graphics component, but they did state the theoretical performance in teraFLOPS, which is derived from clock speed and architecture. The PS4 has a theoretical graphics performance of 1.84 teraFLOPS. We can pretty easily compare theoretical performance of the PS4 and Xbox One to AMD cards, since PS4 and Xbox One both use the GCN architecture (such a comparison isn't practical with Nvidia). To compare to my 270X, I have it set at 1120 MHz, which was the
advertised boost clock of the card I bought. (side note: the price has gone up a bit since I bought it

) Using GPUreview.com's
page for the 7870 and adjusting for clock speed since the 270X is the exact same Pitcairn chip as the 7870, I get a total of 2.8672 teraFLOPs in theoretical performance. So with that clock speed, I'm getting a whole extra teraFLOP, more that 150% of the PS4's theoretical performance. No wonder I can add in higher quality depth of field, "HBAO Full", higher tessellation, etc., and still be playable at 1080p.
Just to throw out some more comparisons:
- The R9-270, the slowest full Pitcairn chip at a stock clock speed of "Up to 925 MHz", according to AMD's website, has a theoretical performance of 2.368 teraFLOPS.
- The cut down Pitcairn chip has 1.76128 teraFLOPS on the 7850, 1.8944 on the R7-265.
- GPUReview stopped being updated before any Bonaire card was released, so there's no easy way to calculate its theoretical performance (that I know of). AMD has provided the theoretical FLOPS performance for the 7790 on its website, though: 1.79 teraFLOPS. The 260X is slightly higher clocked so will have slightly higher performance, while the 260 is a cut down chip so will have considerably lower performance.
- The Xbox One's graphics component, which has the same amount of shaders as an R7-260, has a theoretical performance of 1.31 teraFLOPS.
- The R7-250x has the same clock speed and thus the same performance as the Radeon HD 7770, 1.280 teraFLOPS.
Note that Bonaire seems to punch close to the 7850/265. Keep in mind though that Bonaire is held back by a 128 bit wide memory bus, while all versions of Pitcairn have a full 256 bit wide bus, as does the PS4. So while Bonaire is close in theoretical performance to the PS4, you're likely to run into a memory bottleneck with Bonaire in scenarios that the PS4 would have the memory bandwidth to power through. For parity with the PS4, I would recommend equivalent memory bandwidth and a comfortable advantage in FLOPS, the R9-270 at minimum (a 7870 actually has significantly less memory bandwidth than the 270 and the PS4)
The Xbox One is a bit harder to compare because of its memory setup. Theoretically, its raw computational performance is comfortably behind Bonaire and just a bit above the 7770/250X's Cape Verde. However, it uses a combination of 8 GB of slow DDR3 RAM on a 256 bit wide bus combined with a 32 MB pool of super-fast ESRAM (by comparison, the PS4 uses a straightforward 8 GB pool of GDDR5 RAM). It's hard to say if it would have better or worse memory performance than a 2 GB Bonaire chip. Either way, you will want at least a 2 GB Bonaire card for parity with the Xbox One, as Cape Verde falls short in theoretical performance to begin with. Cape Verde also has half the geometry engines and rasterizers as the rest of the chips talked about here, which would lead to other practical performance deficits.