You said the card couldn't be dual slot if it was to be run in amr I thought, maybe I missread. :confused:
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You said the card couldn't be dual slot if it was to be run in amr I thought, maybe I missread. :confused:
Well first of all the Cell does have 9 totally independant cores. They operate on their own processes totally independant of one another, that is of course unless you specifically program them not to be. Also, the PPC can run two processes at one, so all together you have 10 totally independant processes running on 9 seperate processing cores. Now you say 1 core + 8 FPUs, and I can see where you're coming from, but even under that not totally correct interpretation, when each supposed "FPU" is as powerful as a heavily overclocked P4, it's still very very fast! So sure they can interact like the CPU interacts with the FPU, but unlike that arragement they really are multi-core. You wouldn't call a network of computers a single processor either, a cell is just like that, a very tight network of processors that work together.
Also, the only speculation on my part is the thing with estimated real world performance, the rest is fact. Here are some links:
http://arstechnica.com/articles/paedia/cpu/cell-1.ars
http://arstechnica.com/articles/paedia/cpu/cell-2.ars
http://www.beyond3d.com/forum/viewtopic.php?t=19815 (Warning extremely long, but informative, thread)
http://www.eet.com/conf/isscc/ (Two news items from the conferance it was recently presented at)
http://www.igeek.com/CellProcessor.pdf
http://www.realworldtech.com/page.cf...WT021005084318
http://ascii24.com/news/i/tech/artic...54207-000.html (Some nice charts including the one that mentions 5.2Ghz)
http://pc.watch.impress.co.jp/docs/2.../kaigai153.htm (A bunch of nice PPT slides and photos of the chips)
http://www.scee.presscentre.com/imag...etailsID=25555 (Overview from ISSCC. You'll have to rename the file to .doc)
http://www.extremetech.com/article2/...1761407,00.asp (Another news story)
http://rambus.com/news/newsroom/pressrelease.cfm?id=162 (Memory bus and IO)
Needless to say, I am not GProphet4Ti4200 ;), if anything I'm GProphet6800Ultra. :p:
Anyways, enough going off topic. I just wanted to make a correction.
lol I predict another paper launch with massive price gauging to follow :mad:
gee, what coulda tipped ya off to that one? :DQuote:
Originally Posted by kouch
Ok guys, this could be good, I was reading other forums and came across this. He says he used to work for ati till to 4-5 months ago so his info is about that old. The pipe thing sounds reasonable, I remember there were rumors of 12 pipes of r420 which few believed, not only did it come with 12, but there was an xt verson with 16. I think history will repeat itself. As for core clocks, I am hearing 700-750 now but ati can change those up till the time they begin speed binning depending on yields. I remember they were aiming for 500MHz on x700xt but changed their minds and went with 475 due to bad yields then decided to cancel x700xt in favor of x800 and the few x700xt they made got remarked as pros. No use arguing over r520 core, even if its "only" 650MHz its still beyond fast. The ram sounds quite insane but truth is itll probably be NEEDED in order to feed a hungry fast core with 24,32 pipes. Less bandwith would be a dire bottleneck. Some people are saying r520 will be nothing more than dual or amr x850s but thats wrong cause x850s dont have ps3, why would ati go with this? Their goal is to finally have ps3 and I pretty much doubt they will change the x850xt core just to add ps3 and its still on 130nm too. I give that guy confirming the specs alot of credit. This is also in line from the guy who hit 40k on a 4.3ee p4 and a *stock* r520. on an x850xt the score would be around 33k. Yes this tells me the nature would just be insane and gives me a good idea of the r520s power in everything. Lastly, 512mb ram is a reality, even the x850xt is comming in 512mb flavors. There might be 256mb flavors of r520, even if its only on the non PE verson.
Well those who know me know I used to work for ATi up until last October. Now I'm not going to tell you what's true and what's not true seeing as even us employee's are pretty much kept in the dark but I do know this.. I'll leave you with what's true.. and remove what's false.
24 "Pipelines" (24x1 not 24x1.5 but supports up to 32x1)
96 Arithmetic Logic Units (ALU)
192 Shader Operations per Cycle (UNKNOWN)
700MHz Core(actually last we heard it was in the high 600's)
256-bit 512MB 1.8GHz GDDR3 Memory (yes that's the memory)
57.6 GB/sec Bandwidth (at 1.8GHz)
300-350 Million Transistors
90nm Manufacturing
Shader Model 3.0
ATI HyperMemory (the core will support Hypermemory which probably will only be used in the lower end versions of the core).
ATI Multi Rendering Technology (AMR)
Launch: Q2 2005 (closer to June)
FP32 blending, texturing
Programmable Primitive Processor/Tesselator (not entirely true but will support Truform in hardware).
It's basically an R420 derivative (R3xx) with addons. It was brought back to the drawing board.
I don't like the memory speed and the number of pipelines, it could be 24 but my guess is 16 and also it is likely to have 1.4Ghz GDDr3 not 1800 IMO.
Regards
Andy
well i might be blown away if those 'specs' hadnt already come to light 2 weeks ago, i can't see GDDR3 memory running at 1.8ghz, seen as the 1.4ns version of the ram hasnt really come to light yet, so imo yeilds will still be low - plus theres still another 200mhz jump on that, ATi would need to be real lucky with alot of GDDR3 to sustain the 1.8ghz clocks if you ask me, leaving very little headroom for any overclocking at all and as previously stated memory doesnt seem to clock as well on ATI cards probably due to thier architecture, if that 1.8ghz speed is spot on my money would have to be on XDR, i just cant see them getting alot of GDDR3 chips stable at that speed
Why do you think it would have only 16 pipelines? So your saying all they are really doing is uping the clockspeed and adding support for ps3.0, dosn't sound like much of a card to me.Quote:
Originally Posted by zakelwe
It will have 24 and possibily 32 for the "xt" verson that may be released as a refresh or even at the same time as the pro. I was checking another forum and another "ati worker" said he highly doubts 750MHz or even 700MHz core and instead agrees with the high 600, says even with 90nm itll be too hot for 700MHz and yields too low.
700MHz Core(actually last we heard it was in the high 600's) <------probably accurate. We may see overclocks to 700-750 with 3rd party beefy air cooling though. 650-680 sounds reasonable