This thread was made to keep all of the console hardware discussion in one easy to find place. I also made this thread so I could share my opinions about this in one post. I'm not going to include the WII in this particular post, because you and I both know it wasn't made to compete with the 360 or PS3 in Hardware performance.
Q:Wich console is more powerful overall?
A:Neither.Both have there advantages and disadvantages.
The PS3's main advantage is brute CPU power. This means that the PS3 will most definatly be able to perform much more comlicated Physics calculations. It does have it's disadvantages though. The Cell(PS3's CPU) doesn't have nearly as much General Purpose Processing Power as the Xenon(360's CPU).I'm confident this can be worked around though, the only way to do this though is to completly re-write most of the code that would normally be General Purpose into integer based algorithms. This is why I and many others believe the Cell's true potential will never be fully realized in a game.
The 360's main advantage'sare usable RAM and GPU power. The 360's GPU(Xenos) is definatly more powerful than the RSX(PS3's GPU) and more efficient. Rather then flood you with numbers I'll just explain in logic. The Xenos is only slightly faster at first glance but when you take into account the EDRAM and Tesselation unit(the later of which has only been used one game: Viva-Pinata) the difference is a bit larger. The only other GPU in the world with a tesselation unit is the recently released ATI Radeon HD 2900 XT. The edram allows the Xenos the to perform 4xMSAA in 720p with out any performance drop. The tesselation unit can cluster up a bunch polygons into one big polygon thus giving more performance with the same amount of detail. This basicly means that the Xenos will allway's be able to out perform the RSX.
The 360's OS is also very efficient and only takes up 32 megs of ram where as the PS3's takes up 52. Yes the PS3's XDR system ram is clocked at 3.2 GHz but it's 64bit wich means it's equal to 1.6 GHz 128bit ram, The 360's ram is 1.4GHz 128bit. The 360 has a unified ram pool and the PS3 does not, this basicly means on the 360 if a particular game didn't need that much ram for the CPUthe GPUcould use that extra ram to make the game look better and vice-versa. So the after you subtract the ram reserved for the OS the 360 has 480 megs of 1.4GHz 128bit GDDR3 ram for the GPU and CPU and 10 megs of Embedded DRAM for the frame buffer. The PS3 has 236 megs of 3.2GHz 64bit XDR system ram and 224 megs of 1.4GHz 128bit GDDR3 video ram.Which leaves the PS3 with 460 total megs of usable ram and the 360 with 490, some of the PS3's ram is fasterso thePS3 has more usable bandwidth. So basicly for the 360 to compete with the PS3 in physics it would have touse most of its ram for the cpu thus elemenating it's Graphics advantage(see post below). So in other words games that are very physics heavy, Racing sims(like Gran Turismo)and large scale combat(like Lair)will look better on PS3, where as most other genre's/types of games, RPG's, FPS', Action Adventures, etc. will look better on 360.
So what does this all mean? It means the 360 will always be able to produce better Graphics and the PS3 will alway's be able to produce better physics.
EDIT: I Fixed the RAM footprint error.
Please keep in mind i'm not a video game programmer(yet), but I do believe i'm right.
I do plan to update this thread on a regular basis.
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