AMD: R9xx Speculation

Well whoever leaked the slide isn't very smart. AMD can easily figure out which partner is involved here.
 
Some guy at anandtech.com forums "leaked" that a 4d shader has 98.5% of the performance of a 5d and everyone seems to be running with it...

http://forums.anandtech.com/showpost.php?p=30402647&postcount=497
This indeed seems to be a rough estimate.

Playing with GPUSA, though, you'll see average efficiency is around 75%, with some insanely inefficient shaders (short and almost purely sequential scalar ops...)

Going 2+2, DP would jump from 1/5 to 1/2 (semi-specialized slots, 2 taking care of the MUL and 2 of the ADD) and average efficiency in SP would go up too.

Add the tessellation issue to the mix (3 times the necessary Ops done) and you're done.


Don't know where the "Barts XT is 700MHz" comes from, but perhaps it's true and they doubled ALU frequency.
 
Don't know where the "Barts XT is 700MHz" comes from, but perhaps it's true and they doubled ALU frequency.
It came from nApoleon.But he only said it was 6700 series,and it wasnt the final clock.

双slot
双DVI+HDMI+DP
双6pin
4+1+1供电(4相核心供电在GPU左边)
核心频率700MHz(暂定)
1GB显存
核心比想象的要大...(正方形)
nApoleon 发表于 2010-9-1 23:11
Dual-slot
2DVI+HDMI+DP
Dual 6pin
4+1+1 power circuit (4 phase core power circuit on the left of GPU )
Core clock 700Mhz (tentative)
The die larger than expected (square)
 
Some guy at anandtech.com forums "leaked" that a 4d shader has 98.5% of the performance of a 5d and everyone seems to be running with it...

http://forums.anandtech.com/showpost.php?p=30402647&postcount=497

Not 100% sure that the above post is the first reference to the 98.5% performance but it is the first I saw. Also I don't ever recall that tempered guy having any sort of inside info... though I am not a member of AT so I can't really review his posts, I do read the GPU forum quite a bit for a laugh.

Was that really the original source for the 4D rumour? Wow, if that was just a WAG he definitely inspired a lot of unnecessary mental masturbation over it. I agree with him on one thing though - something big had to have changed.
 
And the little red squiggle under "perf" means the slide was in edit mode - not as part of a deck that's been handed out. So a slide in edit mode needs cack-handed blacking-out of selected text :LOL:

It just means nobody disabled ppt spell/grammar check for that page before converting it to pdf, and hooking it up to the rights managment server. This looks like an internal presentation for talking with partners, not for press. IMHO.
 
This slide looks real to me. So Barts XT really is one half the shaders of Cayman XT? :oops: Cayman will have 96 TMU and 64 or 32 ROP?

If the slide is real, 4D isn't an option I think? (or is group of 20 4D VLIW-units per SIMD possibility?)
 
I can't reproduce the behaviour you're suggesting would cause this problem - using PowerPoint 2007.

Hmm, its been a while since I played around with it. Could be that it was the original ppt with MS office drm, too. Not saying I think its 100% legit; saying that the evidence of an underlined spell check word isn't conclusive to disprove, IMO.

It's all part of the fun!
 
It just means nobody disabled ppt spell/grammar check for that page before converting it to pdf, and hooking it up to the rights managment server. This looks like an internal presentation for talking with partners, not for press. IMHO.
Spell/grammar check is not part of the file, it does not get rendered into a pdf, printed out etc. At least that's how it works with Word 2003. Would be quite silly if it worked somewhere else - you'd have to add all the words unkown words to the dictionary or ignore them. Quite a lot unnecessary work.

It would be quite dissapoining if true. >150W and positioned against GTX 1GB? That's almost a step backwards! Much less shaders, similar rest of chip and still similar Wattage? Something must have gone very wrong if that was the final result. :???:
 
I just tried it with Office 2010 powerpoint save as pdf, and it didn't keep the underlined. I wonder if using the Adobe PDF converter plug in does it? well, actually I don't care that much, so... meh.

Could just be Office Powerpoint with Rights Management Server enabled.
 
I just tried it with Office 2010 powerpoint save as pdf, and it didn't keep the underlined. I wonder if using the Adobe PDF converter plug in does it? well, actually I don't care that much, so... meh.

Could just be Office Powerpoint with Rights Management Server enabled.

It doesn't do it under 2003, 2007 or 2010, spell check etc. only works in edit mode. the file gets freaking CONVERTED if it's in PDF format.
 
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