Wii U hardware discussion and investigation *rename

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I have been looking at the r700 class gpu and I have to say I'm impress the wiiu is able to match current Gen titles while running a second screen. They must be using 45nm parts.

There's more than enough power in an R700 to exceed the current consoles even when running a second screen.
 
Not sure if serious. You are rendering another 480p scene. It does not come magically free from GPU/CPU/memory resources.

Nintendo already admitted rendering to three screens affects the performance alot and games will obviously need to be downgraded to somehow support it. Downgraded much worse than traditional splitscreen games. So you are probably not going to see many graphically advanced games support more than one pad.
That has nothing to do with the framerate being cut in half and most games don't display complex 3D scenes on the GamePad anyway - if both GamePads display maps or something, the performance impact will be negligible.


Yes but at what tdp?
RV730 easily outperforms Xenos and RSX at less than 50W. That's a 55nm part, mind you - the Wii U GPU most certainly isn't.
 
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RV730 easily outperforms Xenos and RSX at less than 50W. That's a 55nm part, mind you - the Wii U GPU most certainly isn't.

Easily? How so?

For example the RV730 PRO uses 48 watts benchmark

4650 score 463 [RV 730 Pro] 48 Watts @ 55nm
X800 pro score 507 [ xenos] hard to find a good match
7800 gt score 518 [ RSx] is down clocked

If we step up to 60 tdp at 55nm we get.
RV730 XT score 568

Benchmark scores from: http://www.videocardbenchmark.net/high_end_gpus.html

This sure doesn't leave a lot of power left for the CPU.
 
Easily? How so?

For example the RV730 PRO uses 48 watts benchmark

4650 score 463 [RV 730 Pro] 48 Watts @ 55nm
X800 pro score 507 [ xenos] hard to find a good match
7800 gt score 518 [ RSx] is down clocked

If we step up to 60 tdp at 55nm we get.
RV730 XT score 568

Benchmark scores from: http://www.videocardbenchmark.net/high_end_gpus.html

This sure doesn't leave a lot of power left for the CPU.
X800 isn't Xenos and 7800 isn't RSX, so I'm not sure what those benchmarks are supposed to tell us - not that Direct3D benchmarks could tell us much to begin with. I'm going by the GFLOPS figures as that's pretty much all we have to work with (Xenos: 240; RSX: a bit stronger on paper but generally considered weaker; RV730 PRO: 384). Then again, the Wii U GPU isn't an off-the-shelf R700 and it won't be a 55nm part.
 
Those card are the cards that were in the dev kits. RSx is the easy one because it is pretty much a off the shelf part.

So gflops is a better benchmark? I do not agree with that.

Like I said before it is impressive they match the correct console plus another screen in this small of console. Knowing the system will also be cheap.
 
Those card are the cards that were in the dev kits. RSx is the easy one because it is pretty much a off the shelf part.

So gflops is a better benchmark? I do not agree with that.

Like I said before it is impressive they match the correct console plus another screen in this small of console. Knowing the system will also be cheap.

Those benchmarks look a little strange. Regardless though the RV730 is undoubtably faster than Xenos. On paper and in it's weakest incarnation it has:

20% more pixel fill rate
140% more texture fill rate
20% more geometry setup capability
78% more shader throughput

And this is effectively from a more evolved and more advanced version of the Xenos architecture so those numbers are comparable and if anything, they understate the advantage RV730 would have.

The only disadvantage would be the memory bandwidth which is very low in RV730's slowest incarnation. That could explain the poor benchmark results but we can assume WiiU would use a different memory configuration anyway, i.e. not DDR3.
 
I still believe it will be DDR3 with edram . I haven't seen anything that says other wise.
The eDRAM alone would make a huge difference. And Nintendo usually seems to prefer speed over capacity when it comes to memory, so GDDR5 wouldn't really surprise me all that much.
 
Why would you want GDDR5 when you already have eDRAM? DDR3 has cost, power, and latency advantages.
 
the 4650 runs on DDR2, not DDR3.
it's very good considering how much it's memory bandwith starved.

I can see nintendo using either 64bit 1GB gddr5 or 128bit 2GB ddr3. performance is the same, or even better for ddr3, cost wise I don't know but I prefer the latter possibility.
 
the 4650 runs on DDR2, not DDR3.
it's very good considering how much it's memory bandwith starved.

.

That's not true they have any different version. The 4650 can use either DDR2 or GDDR3 clocked at up to 700 MHz while the 4670 can use DDR2,DDR3,GDDR3, or GDDR4 clocked at up to 1100 MHz.

And Nintendo usually seems to prefer speed over capacity when it comes to memory, so GDDR5 wouldn't really surprise me all that much.
haha no way.
 
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Do we count the Wuu's performance as if the tablet doesn't exist relative to the current generation titles or do we count it as if it does exist? If the Wuu has a little of it's processing power being used to power a separate screen do we count the overall results of the performance dedicated to the main screen or do we also count the performance of the tablet as well when comparing the overall performance relative to the current generation?
 
Exactly, never once did he say anything like "we feel very good future wii u software will demonstrate significant graphical superiority over the current competition". Or anything, however vague, like that. Nothing.

Iwata said Wii U was currently having "50% of it's power" used. I posted the section he said that in a couple pages ago to go along with a post from Shifty. Man y'all got to start getting caught up on info before making these claims. :p

EDIT: Or stop with the selective reading. ;)

Someone here has the perfect sig that tell everything. Its something like "Small, cheap and powerful, you can only have 2."

MacBook air is small and powerful. Wii is small and cheap. Wiiu is small and cheap.

Wiiu is around 30% bigger in volume than wii. Wii used 13~ watts. Let's go high end and say wiiu uses 50tdp. Build a system using facts we know. We know the amd series the gpu is base on r700 family and a IBM CPU.

The sig I believe you are referring to said Gamecube has/had all three.
 
haha no way.
As AlStrong pointed out, they most likely don't even need GDDR5 considering they have a rather big eDRAM pool. Still, never underestimate Nintendo when it comes to RAM. They were the first to use RDRAM back in the N64 days, Gamecube (and therefore Wii) used 1T-SRAM and eDRAM, and the 3DS turned out to be quite a surprise when it came to memory as well, with its (dual channel?) 268MHz FCRAM plus eDRAM.
 
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