The rumos about Nextbox is a CPU + Pseudo-GPU + GPU in just one big custom chip.

You are absolutely right. You cannot compare FLOPs performance of GPUs (or CPUs) to each other from different brands. In fact, you can't even compare them within the same brand. A FLOP is just the amount of floating point mathematical operations a CPU/GPU can perform. It doesn't necessarily directly correlate to gaming performance. For instance:

GTX580 = 1.58 Tflops

GTX680 = 3.25 Tflops (GTX 680 is not 2x faster than GTX580, but only about 32-35% faster: http://www.techpowerup.com/reviews/HIS/HD_7950_X2_Boost/28.html).

BTW, sidenote, the GPU benchmarks you linked appear to be from June 2012, which are outdated since AMD launched a bunch of performance drivers from that point, including Catalyst 12.11s. With those drivers, HD7970GE is actually faster than GTX680 in BF3 (http://www.youtube.com/watch?v=qR3ewLMbywY)

I am really struggling with the 8 Jaguar core rumors for 2 key reasons:

1) Jaguar cored Kabini SOC is aimed at very small form factor PCs/Ultrathin laptops - this is a low power CPU, not a performance CPU:

Jaguar-based Xbox 720 would be way slower than even a $90 budget 4-core AMD Trinity APU, so why go that route? A bunch of slow cores designed to work best in ultra-thin laptops is hardly a recipe for success for something that is expected to power the console until 2020+. 

2) Jaguar aka Kabini is a 4-core CPU design, not an 8-core one:

"Jaguar supports one to four cores"

http://semiaccurate.com/2012/08/28/amd-let-the-new-cat-out-of-the-bag-with-the-jaguar-core/#.UPDnNm9ZUeo

It would be pretty wasteful to spend $ on a custom 8-core Jaguar design when a 4-core Trinity APU would mop the floor with it in games. 

I am still leaning towards MS chosing an IBM PowerPC CPU but if they go with the AMD route, the dark horse could be could be the FX-8300, which is a 95W TDP Vishera, clocked at 3.3ghz with 3.6ghz Turbo speed:

http://www.techpowerup.com/177867/AMD-FX-8300-Starts-Selling-Lower-TDP-Comes-at-a-Price.html

^ But that CPU is $190 in retail. If MS is really that desperate for a lot of cheap AMD cores for games, they would be better off going with a <3.0ghz Vishera FX8000 CPU than an 8-core Jaguar CPU design. 

For Kaveri with Steamroller cores to be a viable CPU option, MS/Sony would need to have samples of this CPU design by end of Q1 2013 to start volume production of Xbox 720/PS4 around May 2013 in order to be able to have a Holiday 2013 launch. The problem is Kaveri is not due until mid-2013 at the earliest. AMD hasn't even started mass manufacturing of Kaveri since they are yet to shift their APU production to 28nm tech. Thus, it's highly unlikely that Xbox 720 will have a Kaveri with Steamroller cores if it is to launch by Holiday 2013. AMD is still having issues with 28nm node shift, which is the entire point of having Richland serving as a stop-gap between Trinity APU and Kaveri APU on their 2013 CPU roadmap. Fudzilla reports that Kaveri APU is not due until June 2013:

http://www.fudzilla.com/home/item/30102-amd-28nm-chips-are-still-tsmc

I wouldn't even expect Kaveri 28nm in retail until Q3-Q4 2013 given AMD's and TSMC's track record of meeting historical deadlines. So then what are the chances AMD will fulfill 28nm Kaveri orders of millions of consoles ready to be manufactured for Holiday 2013 launch? I am sceptical. If Sony pushes PS4 to Q1 2014, then for them Kaveri APU is doable, for MS unlikely for Q4 2013 launch.

I think it actually makes some sense. There are a lot of popular indie titles that are selling well on the PC. 2D side-scrollers, indie games, and other less GPU intensive games would work very well on the APU without needing the powerful dedicated GPU.  This way the console would be very power efficient for those scenarios. This is a similar idea as used by the Big.LITTLE Exynos 5 Samsung SOC by on the same die (where 4 weaker cores are used for basic tasks and 4 powerful cores are sleeping):

http://www.techspot.com/news/51289-samsung-shows-8-core-exynos-5-octa-processor-during-ces-keynote.html

The dedicated GPU would then be used to power next gen 3D titles. Additionally all the OS functions, web browsing would be handled by the APU, while the dedicated GPU would go into AMD's ZeroCore 3W power savings mode. This would be ideal when you are watching BluRay, browsing internet on the console and performing non-GPU intensive apps. The APU would still be powerful enough and use less power in those cases.

@BlueFalcon

I can assure for you 90% of chance the Durango will have a custom CPU with 8 Jaguar cores... MS is doing something new together with AMD to Durango... maybe in 2014 AMD release the same tech found in Durango in it chips for PC.

About the Orbis it will use a next generation of the A10 quad-core.

And we need to remeber that PS4 will do all these OS tasks while run a game... so the APU makes even more sense.

- APU with 1 CPU core for OS tasks (browser, video chat, music, etc).
- 3 CPU cores + Dedicated GPU fro games.

99% of this thread is hocum

Doubtful. AMD's 2014 GPU tech is going to be on 20nm for starters. In other words it would be prohibitely expensive to design a custom 28nm "2014" Volcanic Islands GPU specifically for MS's console. You have to keep in mind AMD and NV barely make $ on these console projects. For that reason, it's in their best interest to use existing parts with as little customization as possible. AMD hasn't even launched HD8000 series (Sea Islands) but you think they will give MS their 2014 Volcanic Islands GPU tech? Ya right. That's wishful thinking. The reason R500 got pushed forward to Xbox 360 is because ATI ran into HD2000 launch issues due to acquisition by AMD during that period of time. HD2000 was late and AMD had to delay the entire design. On the GPU side, it'll be HD8000 series Sea Islands at best for Xbox 720 if it launches Q4 2013. I am not saying that's a bad GPU, but it won't be some magical non-existing GCN 3.0 part (Volcanic Islands) that PC gamers won't be able to get until 2014.

On the CPU side, going with 8 Jaguar cores seems worthless. It's like putting 8 Atom cores against a 4 core Vishera/i5. They'll get destroyed. Why would MS go with 8 weak Jaguar cores when they can just take a downclocked FX8300 @ 3.0ghz or something and fit it easily into the power envelope with a ton more performance? 

I don't think you realize what Jaguar is. It's  a replacement for Brazos which is a budget (i.e., POS) CPU:

http://www.bjorn3d.com/2012/06/amd-e-series-apu-brazo-2-0/#.UPHIoG9ZUeo

Xbox 720 can have 32 Jaguar cores and it'll still be a horribly slow console. You seem to be way too fixed on the # of cores rather than performance per core. This is a typical marketing trick. It's way better to have a fast dual core processor than a slow 8 core one. Not to mention Jaguar only supports 1 memory channel per chip which means it'll be automatically memory bandwidth starved for games. 

This whole idea that MS would get AMD to make some uber powerful custom version of Jaguar 8 cores that's not even on their roadmap doesn't even make sense because Jaguar itself has always meant to be used in low power devices, not to power high-end products.

If Xbox 720 has an 8-core Jaguar CPU at its core, it's automatically a fail as a next generation console. A 4 core AMD APU based on Trinity/Richland design in PS4 would mop the floor with a Jaguar CPU in no time. MS can't be naive enough to put a tablet/smartphone 8-core CPU inside their next generation console considering most of the industry expects Sony to utilize at least a 4-core AMD APU in their PS4. You don't start with a Honda Civic Hybrid when you hear rumors of your competitor going with a BMW M3. Jaguar = Honda Civic Hybrid.

Well,even chinese AMD dude he just said 8 cores,no one said it will be...Jaguar or even AMD CPU

Ya, I just saw mentions of an 8 core Jaguar CPU in the thread and decided to address why that seems highly unlikely. Xbox 360 and PS3 launched in 2005/2006 and you'd think by now a ton of games would be multi-threaded but they are not. Most games still don't take advantage of more than 4 cores. With a GTX670, you are mostly GPU bottlenecked with anything beyond a 4-core CPU.

http://pctuning.tyden.cz/hardware/graficke-karty/25994-vliv-procesoru-na-vykon-ve-hrach-od-phenomu-po-core-i7?start=16

The architecture (or instructions per clock) matters more than # of cores. 2nd generation i5/i7s have no trouble outperforming 6 core Phenom II and a 6-core 1st generation i7 in games:

http://www.xbitlabs.com/articles/cpu/display/core-i7-2600k-990x_9.html#sect2

Despite Intel having 4-core CPUs in 2007, Xbox 360 being a 3-core 6 threaded CPU and PS3 being a 1 core with 6 supporting SPE engines, here we are in early 2013 and almost no modern games use more than 4 threads. For that reason, it would be a huge gamble to go with an 8 core CPU based on weak Jaguar cores. I could see some compromised approach by going with a lower clocked 8-core IBM PowerPC or even an AMD FX 8 core.

LEAK?

http://www.ign.com/articles/2013/01/16/next-gen-secrets-allegedly-leaked-to-nvidia-by-former-amd-executives

Over the last year, AMD executives have been abandoning ship for rival Nvidia, and according to a new lawsuit, they took confidential information about the Xbox 720 and PlayStation 4 with them. Engadget reports that AMD has filed suit against four ex-employees, claiming that the executives absconded with thousands of confidential documents, including sensitive information about technologies at use in next-gen consoles. As our well-placed sources told us last year, custom silicon based on AMD's A8-series APU and HD 7670 GPU will be used in the PlayStation 4, while the Xbox 720 will combine an IBM PowerPC CPU and a custom version of AMD's 6670 GPU.

The lawsuit targets the former VP of AMD's Strategic Division, Robert Feldstein, who played a key role in developing custom hardware for game consoles like the Xbox 360, Wii, and Wii U. AMD claims that he and others transfered 100,000 files that contain trade secrets related to development, based on "forensically-recovered data" that indicates the executive used external storage devices on his company computer before his departure. What's more, Feldstein and Richard Hagen, another AMD executive, lured two other employees to Nvidia.

With Nvidia seemingly edged out of the upcoming console generation, Feldstein could be the key to regaining a role in future console hardware. Whether or not he has or will use proprietary data stolen from AMD to help achieve that goal remains to be seen.