Xbox2 cpu performance?

[bbot]

Well, here it is:

http://images.visualwebcaster.com/18267/25730/slide13.jpg

 

[aaronspink]

3.5 Billion clock cycles per second (or 3.5Ghz)
3 cores
1 Altivec unit (or whatever IBM calls it) per core
4 way SIMD on the Altivec unit
2 operations per FPU (FMADD)
-------
84 GFLOPs

Actually it probably should be:

Per Core:
Main FMAC = 2 F/C @ 3.5 = 7
1 4 wide SIMD FMAC = 8 F/C @ 3.5 = 28
Per Core total = 35 GFlops

Per Die
35 * 3 = 105 GFLOPS.

Though the SIMD performance could be higher if they include support for tree/combining operations.

 

[aaronspink]

In Gflops for 1 Cell and tri-core Xe CPU,

PS3 (CPU = 294 + GPU= 480) 2.4x > Xe (CPU = 84 + GPU = 240)

Anyway what does it matter right? It's all about the games? If your're a graphics whore then why don't you wait for all the consoles to be released then by the most powerful!

I think you're probably overestimating the Nvidia GPU a little bit. I wouldn't be supprise if they were both design to be fittable on 90nm but primarily target for production die sizes on 65nm. If that is the case, I don't see the Nvidia GPU have 2x the shader resources.

Aaron Spink
speaking for myself inc.

 

[cybamerc]

Four Gigaflops??? Isn't that less than PS2 (isn't PS2 6.4 Gigaflops??) and xbox!!! !! SONY Suxxas!!!

Keep in mind that this is the guy who posts "news" from Spong.

 

[passerby]

Isn't this topic rather redundant? We're just regurgitating things we already know. No, actually, we're regurgitating things we've already SPECULATED!

Let me yell that for you again!

 

[Farid]

YOu have the xenon gpu listed at 500mhz that is a decrease in clock speeds .

X800xt pe is 520 . The x850 is what 560 ? Why would they go down ?

He's not the one listing the XeVPU at 500MHz, the leaked Xenon diagram showed a VPU clocked @500MHz+, so he just speculated using the infos he had, trying to get a rough estimation, nothing precise or anything. The XeVPU could, indeed be clocked @520, or 550MHz, but that would add another speculation, from him, to the equation, so he just used the numbers available.

By the way, the clockspeed of the R3XX derivatives is not really relevant, since the R500 is, supposed to be, a totally new architecture.

Expectation, PS3 cell processor: four Gigaflops (Based on slide which shows "home server" with 4 cells, "home server"= apparently the deluxe version of PS3)

Which is probably why Sony turned to Nvidia to design a powerful gpu.

Just ask yourself, why would they go through the troubles, make partnerships, spend billions to create and then use a Cell processor if it's weaker, by a large margin, than their actual EE?

 

[bbot]

I don't have to ask myself anything. It's you that has to face reality. The slide exists. Deal with it.

 

[Alejux]

I think bbot is right.

It only makes sense, that SONY would join with IBM and TOSHIBA (not to mention nVidia)....and waste billions of dollars and years of development to make a .65nm chip, that will be slower then the PS2.

IT ALL MAKES SENSE NOW!

 

[rabidrabbit]

In the slide the 1 GFlop is a "Multi Cell Home Server", not a PS3.
As far as I understand it, a "Home Server" doesn't need as many GFlops as a PS3.
A "Home Server" maybe is basically just a HDD, used mainly for storage, with limited processing power. The PS3 that is connected to the "Home Server" does most of the processing needed in media applications and streaming data from the "Home Server".

If that slide is kept as a basis for speculation (though it maybe should not, as it is quite old already), a PS3 might fall between the "Blade" and the "Rack" (32 Gigaflop - 1 Teraflop)

It's no surprise really that some unmentioned posters don't want to see that slide beyond the "Multi Cell - 1 Gigaflops" point

 

[pc999]

People , we have a next gen dev ( DeanoC ) which say that the XeCPU is a clean sheet

Why do some people have a problem that XeCPU is a clean design, designed and built from scrarch for this one job. Blank sheet of paper, lots of engineers. As I have said many many times its not remotely related to a G5, its share a similar ISA but thats it and by the sounds of it so does Cell.
MS and IBM picked a set of features and built a processor around them

http://www.beyond3d.com/forum/viewtopic.php?p=430998&highlight=#430998



So why do you keep with this threads

 

[Jacob]

So why do you keep with this threads

Expectation, PS3 cell processor: four Gigaflops (Based on slide which shows "home server" with 4 cells, "home server"= apparently the deluxe version of PS3)

Which is probably why Sony turned to Nvidia to design a powerful gpu.

I don't have to ask myself anything. It's you that has to face reality. The slide exists. Deal with it.

For laughs?

Sony to re-release PS2 in 2008 as PS3++, SOUNDS ABOUT RIGHT TO ME!

 

[Paul]

Expectation, PS3 cell processor: four Gigaflops (Based on slide which shows "home server" with 4 cells, "home server"= apparently the deluxe version of PS3)

I'm trying to scream but I can't breath, can anybody hear me? HAHAHAHAHAHAHAHAHA

Someone put this in their profile because I wanna see the reaction when Broadband Engine is well north of 500GFLOPS or dare I say a TFLOPS class microprocessor?

 

[nAo]

If PS3 CPU will be 2x faster than Xenon CPU...it would be an achievement!

 

[Qroach]

I don't know about some here, but I certianly won't expect a 1 Tflop processor in PS3. They aren't going to be giving everyone a super computer for $400 american.

 

[AzBat]

I don't know about some here, but I certianly won't expect a 1 Tflop processor in PS3. They aren't going to be giving everyone a super computer for $400 american.

I have a hard time believing it as well, but you never know. Guess we'll find out in due time. Same goes for Xbox2.

Tommy McClain

 

[Mulciber]

i think it takes like 256 2.8ghz p4s to reach 1.5 TFLOPS. 1 ps3 should do that easy

 

[Acert93]

i think it takes like 256 2.8ghz p4s to reach 1.5 TFLOPS. 1 ps3 should do that easy

(Emphasis mine)

Why?

And what information gives us an indication that it should do 1.5 TFLOPs "easily" and what do you expect as a max?

 

[Mulciber]

i think it takes like 256 2.8ghz p4s to reach 1.5 TFLOPS. 1 ps3 should do that easy

(Emphasis mine)

Why?

And what information gives us an indication that it should do 1.5 TFLOPs "easily" and what do you expect as a max?

i was attempting to be EXTREMELY heavy on the sarcasm

 

[Acert93]

Oh, hehehe. Sorry!

I have seen so many, "CELL will do 1 TFLOPs!!!" posts that I thought that you were serious. I was thinking maybe you knew something no one else did

 

[ERP]

Pointing out the obvious here.

But if Sony and MS split the workload between GPU and CPU like they did last time, then the PS3 CPU will have to ghave more performance than Xbox2 to be equivalent.