First Cell demo (48 MPEG 2 Videos)

SSE2 has DP

 

Yeah, the max clockspeed of dualcore Presler (65nm) in Q1 2006 is 3.4Ghz at its max, while Pentium XE Smithfield is 3.2Ghz.

 

Too bad that doesn't change the situation much especially the DP situation like some people would have liked/hoped.

 

Who are these people?

 

Man I think you should look in the mirror and cry. I didn't compare Intel vs Sony just Cell vs P4 and mentioned that P4 costs a alot more to the user. Are you retarded or something?. I said it was slightly offtopic, but as far as I'm concerned it was also true. I don't know what your problem is, but it is evident that you have lot's of them.

 

stop troll post please..

or wait the E3 and then restart troll post on the tech demo

 

dual-core Presler (65nm) in Q1 2006 @ 3.4Ghz
2 PE Cell (65nm) in Q1 2006 @ 3.4Ghz

 

Keep on hoping. Supercomputer on a chip.....1TFLOPS CELL......in 2010......single precision.

Umm yeah right.

 

Ah thanks! ...What about VMX2!

Revision, that would mean an extra 1 DP Flops per cycle per core then for the pentium...?

So single HT P4 ~ 1(FPU) + 1 (SSE2) ~ 2 Flops per cycle


Dual HT P4 ~ 2+2~ 4 Flops per cycle ~ 14 DP GFlops @ 3.5 GHz

Dual G5 ~ 28 DP Gflops @ 3.5 GHz

AFAIK, CELL ~ 26 DP GFlops @ 4 GHz ~ 23 DP GFlops @ 3.5 GHz

EDIT:

Changed Pentium to 4 flops per dual core per cycle...> 14 DP GFlops @ 3.5 GHz.

 

Yes I can see it was too hard for you to understand, I'll try to write little bit simpler for you next time, I'm sorry you got confused.

 

Thanks DeanoC and Jaws.

Order of magnitude...

Umm..yeah..ok.

 

What are the situations where dual precision is needed?

 

That's not the point. Whether CELL will require DP for the apps it's will specialise in, in no way excuses it's poor DP performence.

 

well if it doesn't need it, does it really matter?.

 

Made an edit above for DP, so AFAIK, this how things stand so far,

Double Precision: @ 3.5 GHz

Dual HT P4 ~ 14 DP GFlops

Dual G5 ~ 28 DP GFlops

CELL ~ 23 DP GFlops


Single Precision: @ 3.5 GHz

Dual HT P4 ~ 35 SP GFlops

Dual G5 ~ 70 SP GFlops

CELL ~ 259 SP GFlops


I'll leave the semantics to you guys!

http://www.beyond3d.com/forum/viewtopic.php?t=22336

 

Poor DP performance??? Well @ 4.5ghz(which is very achievable) I would think its 29 DP GFlops which is about equal to a top of the line processor right now that you could only dream of getting for $300-$400. Plus it is still 2x the DP peformance of a top of the line Intel. How is this poor DP performance? Compared to its SP performance maybe, but it was specifically made for SP performance.

Also Cell was made to be easily scalable, adding another one(maybe not in ps3) would make it 2x as fast.

 

not an order of magnitude. End of story.

 

Well I never same order of magnitude, some others might have but not me. I was just pointed out that Cells DP performance was not "Poor" like you said.