314 replies to this topic

[SDDMN]

Autosaver?

Not exactly. The name you see now is the same exact name I have on a "certain other" forum.

Then again, I can understand you wouldn't remember me considering you hardly see any posts from me there.

Edited by SDDMN, 05 February 2013 - 12:36 PM.

[Majarra]

Not exactly. The name you see now is the same exact name I have on a "certain other" forum.

Then again, I can understand you wouldn't remember me considering you hardly see any posts from me there.

Nintendo Defense Unite member?

[SDDMN]

Nintendo Defense Unite member?

Umm, a NDU member is someone who defends Nintendo no matter what, right? I don't take enjoyment out of doing that. I just like playing their games.

Anyways, hope you enjoy your time in the forums!

Edited by SDDMN, 05 February 2013 - 01:22 PM.

[dragomix]

This guy starts to scare me!

https://twitter.com/marcan42

He is saying that Wii U GPU is R6xx based, 160 ALU units ~175 gflops!

[Arkhandar]

This guy starts to scare me!

https://twitter.com/marcan42

He is saying that Wii U GPU is R6xx based, 160 ALU units ~175 gflops!

The GPU is completely custom.

It may have started as a R6xx series GPU during the first stages of development, but that alone means almost nothing in terms of power and efficiency.

Also, he said nothing about it being " ~175 gflops" in theoretical power peak.

This whole discussion is pretty much useless.

[routerbad]

What I don't get is if it is in fact R600 based, it would have ATi branding on the chip housing like Hollywood did. That is the basis for the presumption that this is a completely custom setup. It wouldn't justify the cost in the slightest, given we know that Ninty is losing money on console sales at the moment. It also wouldn't make any of the recent previews from ND look possible at all.

[Arkhandar]

What I don't get is if it is in fact R600 based, it would have ATi branding on the chip housing like Hollywood did. That is the basis for the presumption that this is a completely custom setup. It wouldn't justify the cost in the slightest, given we know that Ninty is losing money on console sales at the moment. It also wouldn't make any of the recent previews from ND look possible at all.

It's not a R600 series GPU.

Like I said, it may have started as one during the first stages of development but now its a completely different thing, tailor-made for Nintendo's needs.

[routerbad]

It's not a R600 series GPU.

Like I said, it may have started as one during the first stages of development but now its a completely different thing, tailor-made for Nintendo's needs.

I wouldn't think so either, and though marcan doesn't think so Hollywood was widely rumored to be based on R600 given the die size, layout, and capability. If indeed Hollywood was based on R600 then wouldn't it make sense to include the driver modules to allow for emulation?

He seems to think Hollywood is quite literally GX with a higher clock speed, which doesn't seem plausible to me given all of the other known quantities.

[dragomix]

What I don't get is if it is in fact R600 based, it would have ATi branding on the chip housing like Hollywood did. That is the basis for the presumption that this is a completely custom setup. It wouldn't justify the cost in the slightest, given we know that Ninty is losing money on console sales at the moment. It also wouldn't make any of the recent previews from ND look possible at all.

R700 is still ATI branded! So i dont think its R700 at all! Its custom, but SPUs can be older with 20 ALUs on SPU, so we get a nuber of 160 spus @ 550MHz is 176 gflops.

​I think its e6760 SPU's spot on, same clock speed, similar TDP, same production technology...

Edited by dragomix, 05 February 2013 - 04:19 PM.

[routerbad]

R700 is still ATI branded! So i dont think its R700 at all! Its custom, but SPUs can be older with 20 ALUs on SPU, so we get a nuber of 160 spus @ 550MHz is 176 gflops.

Right, if it was based on R700 it would carry ATi branding as well. Going on the assumption that this chip is completely custom then really anything is possible. The consensus at the moment is 40 ALUs/SPU for 320 SPUs @ 352GFLOPS.

e6760 has 480 sp's @600MHz. You think they just used the SPU's from that chip and customized everything else?

[dragomix]

AMD provided SIMD cores, but i can't seam to find any information about variants of SIMD cores.

Im looking at Trinity CPU Core, and i think Wii U and Trinity use same SIMD cores. Trinity has 12 of them, and 384 ALUs max. So 1 SIMD core have 32 ALUS per core. If Wii U uses same SIMD cores, than it has 256 ALUs and ~ 300 gflops.

There is no e6760 die shot, but i think that piece of information could resolve mystery.

Edited by dragomix, 05 February 2013 - 04:52 PM.

[routerbad]

So it isnt based on VLIW at all then? Do we know for sure AMD provided them or is that speculation? That would change the conversation drastically I think because everyone is assuming that the 8 clearly visible SPU's are based on VLIW5.

[dragomix]

This is Trinity:



SIMD cores (SPUs) aro so similar to those of Wii U! Even texture units look similar!

Edited by dragomix, 05 February 2013 - 05:04 PM.

[routerbad]

Looks like AMD changed all of the nomenclature. Each SIMD has 16 SP's, each SP has 5 processing elements, if they are using evergreen SIMD cores that would be 8 (that we know of) simd cores with a total of 640 processing elements.e6760 only has 6 SIMD cores and 480 PEs.

That would put it at 352 GFLOPS which doesn't make sense to me because the same calculation would cut the e6760 GFLOPS from 576 to ~288 (did it a minute ago, can't remember exact number)

Does SIMD width come into the calculation at all? What am I missing here?

I'll have to look at that a little later, have to head home from work.

[dragomix]

e6760 has 578 gflops. It goes like this:

6x80x2x0.6=576

if we make same calculation (if Wii U has same SIMD cores like e6760) than we have:

8x80x2x0.55=704 gflops

But we dont have info on how many gflops Trinity GPU have!

[routerbad]

So you don't account for the number of SP's per SIMD core?

[Jacob]

It's bad news!

Dun Dun Dunnnnnn!

[ElderKnight77]

The GPU is completely custom.

It may have started as a R6xx series GPU during the first stages of development, but that alone means almost nothing in terms of power and efficiency.

Also, he said nothing about it being " ~175 gflops" in theoretical power peak.

This whole discussion is pretty much useless.

Yeah, I am beginning to think that the Wii U hack is all smoke and air from his recent comments as of late. Especially when he said I could have provided Gaf with the details before Chipworks released the photo. So if he had the info all this time then why all the secrecy until today? He knew people wanted the information yet he decided to stay quite. Has anyone else tried to authenticate his claims about the CPU by chance?

[routerbad]

Trinity uses a Cayman GPU core. 24 SIMD Cores with 64 PE's per SIMD. Clocked at 880MHz looks like ~2.7TFLOPS

If Wii U uses the same SIMD cores, with 64 PE's per core, its 8*64*2*.55=563GFLOPS

[Jacob]

Wow that chip is huge. It possibly took a year to make that big of chip