AMD: R9xx Speculation
- Thread starter Lukfi
- Start date
I can't see any reason why tesselation tri/s throughput would be different (per clock), since I doubt it's fully distributed.
Sounds like ATI Stream/OpenCL to me..I haven't seen that mentioned on the boxes before.
besides.. an APU with APP sounds mighty ehr.. APplicable.
Will the final reviews have the right info about the new cards
I think reviewers are better at writing specs down than people that steal cards.
-The_Mask-
Newcomer
That were just thoughts, Cayman = 1.5 x Barts, Antilles = 2x Barts, based on TDP and memory frequenty.
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A weeks gone, so we know BartsXT = 6870...but no idea what sp count are...960 or 1120? Either one is a serious downgrade even from 5850...i am skeptical about the synthetic benchmarks...can Barts live up to expectation with much lower sp? I have a feeling the lowered sp will affect certains fps and the positioning of 6850<5850<6870<5870 will not hold true..
If techspot MOH results are accurate..i am surprised to see such a big fps gap between 5850 and 5870.....why? Another thing in the review.... Nvidia gpus are very strong with so many games...still
http://www.techspot.com/review/324-medal-of-honor-performance/page5.html
Last of all..still not seeing significant 5870/5850 price cuts.....we can talk about perf/mm...but what matters more is perf/$/generation...DX11 was to be the quickest..but it seemingly otherwise..all imho.
If techspot MOH results are accurate..i am surprised to see such a big fps gap between 5850 and 5870.....why? Another thing in the review.... Nvidia gpus are very strong with so many games...still
http://www.techspot.com/review/324-medal-of-honor-performance/page5.html
Last of all..still not seeing significant 5870/5850 price cuts.....we can talk about perf/mm...but what matters more is perf/$/generation...DX11 was to be the quickest..but it seemingly otherwise..all imho.
I like these numbers :smile:
-The_Mask-
Newcomer
..so i can feel where the 6800 cards are priced...it is looking likely they will just slot in between 5850/5870...with a $10-30 price cuts..not much going for them...6900 series will take over 5870...and 6970 should start a new higher priced segment...it is time for commerce, as dave said earlier...
http://img2.imageshack.us/img2/3299/76784917.jpg
i saw this img in xtremesys....how true is it that the XFX cutout cools the gpu by another 2°c.....bigger exhaust ftw?? Going back to the exhaust issue....i got some replies earlier..did not have time to ask back...seeing as im no engineer or technician...not even a bright person...but is it still not true that having a full slot cooling works better than half slot, even if half slot works good for 5800 series...? Yes the 5800 series did have better cooling than 4800..but isnt that down to 40nm and aggressive powerplay (GDDR5 finally auto downclocks) and vapor chamber cooling? I still have doubts for Eyefinity taking the place of better/silent cooling?
http://www.xtremesystems.org/forums/showpost.php?p=4588889&postcount=302
one more thing...it looks like stock 6800 will use either heatpipes or vapor chambers for their cooling, while stock 5800 series all used vapor chamber, another penny pinching...which i hope will pass on well to the buyers..
I wondered about this too, but if you look at how close the XFX cooler comes to the DVI port, and how close it ends wrt the HDMI port above it, it has an extra 2 slots worth of ventilation compared the the reference, making it 13 units wide vs 11. The questionable side of this is whether the XFX logo blocks off less or more air than the reference grill design and of course how much extra exhaust area helps in the first place. Like you said the only way to compare this is by comparing a 5870 to a eyefinity 6 card, but then the extra VRAM could make a difference.
DarthShader
Regular
Really??
Maybe in conjunction with standard heatpipes?
http://www.pcgameshardware.com/aid,...irst-DirectX-11-graphics-card/Reviews/?page=2
http://www.pcgameshardware.com/aid,...irst-DirectX-11-graphics-card/Reviews/?page=2
Man from Atlantis
Veteran
According to DonanımHaber HD6850 has 960x SP and HD6870 1120x SP final specs..
http://translate.google.com/translate?js=n&prev=_t&hl=tr&ie=UTF-8&layout=2&eotf=1&sl=tr&tl=en&u=http%3A%2F%2Fwww.donanimhaber.com%2Ftm.asp%3Fm%3D43819506
http://translate.google.com/transla...http://www.donanimhaber.com/tm.asp?m=43820180
http://translate.google.com/translate?js=n&prev=_t&hl=tr&ie=UTF-8&layout=2&eotf=1&sl=tr&tl=en&u=http%3A%2F%2Fwww.donanimhaber.com%2Ftm.asp%3Fm%3D43819506
http://translate.google.com/transla...http://www.donanimhaber.com/tm.asp?m=43820180
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Unknown Soldier
Veteran
Nothing new really. Someone must be blind not to know that 6850 will have 960SP and 6870 will have 1120SP. Core speeds to be 775 and 900 respectively. Prices $200 and $275, although I have to say I was wishing $250.
DavidGraham
Veteran
Then that would be a strange name for it indeed .
EDIT : on a second thought , it seems that "AMD Advanced Parallel Processing Technology" refers to the new shader arrangement , as mentioned in DonanımHaber links.
They changed their mind so quickly ? they sounded so confident the first time !
Anyhow this is similar to the situation of GF104 , nobody knew the correct number of shaders , nobody knew about super-scalar arrangement , and all leaks were wrong , except for those that came 1 weak or so before launch .
Apparently , when the company changes the way shader works , all leaks will be contradicting .
I still vote for the 1280 ALU Barts , just because the idea of having 3 RPEs for Cayman (with improved Tessellation) is royally exciting .
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Radeon HD 6850: 960 ALUs @ 775 MHz (~230mm² / 1488 GFLOPS / ~$200) vs HD 5770 (170mm² / 1360 GFLOPS / $125) vs GTX 460 768 MB (368mm² / $140)
Radeon HD 6870: 1120 ALUs @ 900 MHz (~230mm² / 2016 GFLOPS / ~$275) vs HD 5850 (334mm² / 2088 GFLOPS / $230) vs GTX 460 1 GB (368mm² / $190)
Note: Prices are taken from Newegg.
Of course it is, but the simple fact of the matter is that 5870 had a higher TDP to disappate in the same condiditions than with RV770 or RV790 XT; its does to a better cooler design (note before anyone points out to me that RV790 was about the same or higher than Cypress XT, RV790 also had a thermal policy that revolves arounf 100C while Cypress was 90C; this allows Cypress to lower the TDP but that is a result of the better cooling)
Reference designs were heatpipe only. Cypress XT was a 4 heatpipe design while Cypress PRO used RV790's cooling.
Radeon HD 6850: 960 ALUs @ 775 MHz (~230mm² / 1488 GFLOPS / ~$200) vs HD 5770 (170mm² / 1360 GFLOPS / $125) vs GTX 460 768 MB (368mm² / $140)
Radeon HD 6870: 1120 ALUs @ 900 MHz (~230mm² / 2016 GFLOPS / ~$275) vs HD 5850 (334mm² / 2088 GFLOPS / $230) vs GTX 460 1 GB (368mm² / $190)
Note: Prices are taken from Newegg.
What the heck are those "
" supposed to mean?1) Pre-order prices are ALWAYS too high. As soon as the initial demand wave is over, prices will definitely normalize at a lower level, something like 150-160$ for 6850 and 200-220$ for 6870.
2) GFLOPs tell us NOTHING about real-world performance. Otherwise the 5770 would wipe the floor with the GTX 460, which is not the case, obviously.
3) We don't know the exact gaming performance numbers yet. If some of the rumors are true, the 6870 might perform closer to 5870 than 5850, and the 6850 closer to 5850 than 5830. So even if the above prices should fall less than I anticipate, they might still be fair for the performance you get.
No need to
about pre-lauch prices when so many aspects are still unclear.Similar threads
