Dodece said: That means it has to be close to top of the line. |
You missed 2 critical factors: power consumption and underlying CPU/GPU architecture.
As others already mentioned in the thread, due to power consumption limitations of modern CPUs/GPUs, by definition the next consoles cannot have top of the line hardware. If they did, that would mean a 6-core i7 3930K-3970X that have a range of TDP from 130W to 150W, paired with GTX690 style GPU that uses 270W of power in games. Even single GPUs such as GTX780/HD8970 are rumored to have 240-250W TDP when they launch in Q1-Q2 2013.
For all we know, Xbox 720 could pack a 2.0ghz 8-core PowerPC IBM CPU that's a derivative of Wii U's tricore version. We cannot just look at the # of cores and be impressed based on that alone. You can easily end up with a V8 engine making just 250hp, but if someone told you the car has a V8, you might assume it has 450hp. Since rumors point to MS maintaining BC with Xbox 360, more likely than not, the 8-core CPU is not an x86 AMD/Intel variety, which almost automatically means it has average performance per core in games. A 3.0ghz 8-core PowerPC would be nothing special considering a single core in 1st generation i7 is more powerful than the entire Xbox 360 tri-core CPU.
On the GPU side, the "8800 GPU" could be powerful, or it might not be. It could just as easily end up being a 2GB HD8870M, which is about 20% slower than a budget HD7770 desktop part (i.e., 640 SP part):
http://www.anandtech.com/show/6571/amd-releases-full-product-specifications-for-radeon-8000m-series
Also, we cannot use the example of Xbox 360 using a unified shader GPU as a comparison of how advanced GPUs in console can be because the transition from fixed fragment pipeline GPU architecture to a unified shader one was the single biggest change in how GPU worked in the last 8 years. It's easy to understand why -- because each of the unified shaders could perform pixel or vertex operations. If you had a GPU with fixed 24 pixel pipelines and 8 vertex ones and a game needed more pixel or vertex shading power, you became bottlenecked on 1 side and the non-bottlenecked pixel/vertex shaders would be underutilized. In contrast, say a 32 Unified shader GPU could allocate workload depending on what the game needed (24 to pixels and 8 to vertex and if a game needed more vertex shading power, it could redistribute the workload to say 16 unified shaders to perform vertex operations). Contrary to the time when Xbox 360/PS3 launched, in 2013 there are no impeding major architectural changes in how the graphics architectures actually work. Therefore, it won't be the case of having breakthrough next generation GPU architecture in consoles that's not already on sale for the PC. The GPU power will be limited by power consumption, which means it won't be top of the line. Granted, consoles extract more performance out of their parts due to optimizations.
Finally, based on how AMD has renamed its HD8000M parts, HD8870M is actually slower than HD7870M. Therefore, we cannot conclude just how powerful the console is by only looking at "8 core CPU with HD8800 series GPU" rumor without having specific details of the underlying CPU architecture and GPU specs. To prove my point, you can just as easily end up with another hypothetical console that is faster with just a "4 core CPU and HD7800 series GPU." How can that be? Because, this "hypothetical" console I just made up might have a Core i7 3770K + HD7870 desktop part and the 8-core + HD8800 GPU console could just as easily be a slow 8-core IBM CPU + HD8870 Mobile part (aka downclocked HD7770).
Pemalite said:
As for those who are saying that an 8 core chip will be: OMGWTFBBQ EPIC PERFORMANCE! Is simply false. You could have an 8 core Intel atom. It's still going to be slow as crap compared to a dual-core Ivy-Bridge processor. It's not untill we get more information on the CPU that we can determine if it's going to be good or not.
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Exactly. In 2007, Intel demonstrated an 80-core CPU in a die size roughly double that of Core 2 Duo. But they never released it because performance wise, those 80 cores are very weak, and for most tasks a 4 core 2013 Haswell CPU would outperform the 80-core one with a bunch of small weak little cores since most programs don't scale beyond 4-8 threads. An 8-core CPU would only be impressive if games utilized 6-8 threads (99% do not) and if each of those cores was as powerful as cores found in modern AMD/Intel processors.