Monday, November 22nd 2010
AMD Cayman, Antilles Specifications Surface
At last, specifications of AMD's elusive Radeon HD 6970 and Radeon HD 6990 graphics accelerators made it to the internet, with slides exposing details such as stream processor count. The Radeon HD 6970 is based on a new 40 nm GPU by AMD, codenamed "Cayman". The dual-GPU accelerator being designed using two Cayman GPUs is codenamed "Antilles", and carries the product name Radeon HD 6990.
Cayman packs 1920 stream processors, spread across 30 SIMD engines, indicating the 4D stream processor architecture, generating single-precision computational power of 3 TFLOPs. It packs 96 TMUs, 128 Z/Stencil ROPs, and 32 color ROPs. Its memory bandwidth of 160 GB/s indicates that it uses a 256-bit wide GDDR5 memory interface. The memory amount, however, seems to have been doubled to 2 GB on the Radeon HD 6970. Antilles uses two of these Cayman GPUs, combined computational power of 6 TFLOPs, a total of 3840 stream processors, total memory bandwidth of 307.2 GB/s, a total of 4 GB of memory, load and idle board power ratings at 300W and 30W, respectively.
Source:
3DCenter Forum
Cayman packs 1920 stream processors, spread across 30 SIMD engines, indicating the 4D stream processor architecture, generating single-precision computational power of 3 TFLOPs. It packs 96 TMUs, 128 Z/Stencil ROPs, and 32 color ROPs. Its memory bandwidth of 160 GB/s indicates that it uses a 256-bit wide GDDR5 memory interface. The memory amount, however, seems to have been doubled to 2 GB on the Radeon HD 6970. Antilles uses two of these Cayman GPUs, combined computational power of 6 TFLOPs, a total of 3840 stream processors, total memory bandwidth of 307.2 GB/s, a total of 4 GB of memory, load and idle board power ratings at 300W and 30W, respectively.
134 Comments on AMD Cayman, Antilles Specifications Surface
And if the leak is to be believed, antilles will be a dual underclocked HD 6970, so if nv dual gpu card isn't dual underclocked GTX 580, nvidia won't be able to match amd's dual gpu.
But seriously all i hope for is around the power of 6870 crossfire and have 2gb of memory as standard so i won't mind selling my 6870's to get myself back to using a single card and still game at 5040x1050 with maxed settings.
Not likely mind you :laugh:
Which should be better minimum frames ( so higher average perhaps too) and since it's roughly dame performance per die area they can use the saved space for extra bits improving things just that bit more.
So 6870 crossfire performance would be around the performance after that thought process lol
waste o post.
I'm really hoping that getting a 2gb 6970 will be a worth while upgrade from a pair of 6870's even if its just for higher min fps, no crossfire issues (not that i have really notice any apart from trouble overvolting with certain programs), the fact that a single card won't be held back so much by my cpu compared to two cards and the hope that 2gb of memory will help when running games maxed at 5040x1050.
I have to ask though why is your rig listed as dead along with everything it's made up from?
CPU was fine, ram was fine.
PSU, two graphics cards and the mobo are dead though : [
But you know it's a great excuse to upgrade :p that is the only thing that does not bother me about hardware failing on me although it really sucks if it happens at a time when you either have no money to upgrade or at a time when next generation hardware is about to come out but you still have to wait weeks or months even for it to appear at retail.
Do you have any plans for replacement items... maybe a 6970? :p
Looks like you'll be needing 2 new graphic cards ...My information network tells me you'll have a couple of 6870 cards for sale soon: i think i may have found you a customer ...
I'm betting panther will be wanting a 580 or 6970 though :p any thoughts on that yet panther?
Getting back on topic, these new developments seem interesting: really looking forward to seeing some benches. I just hope whoever wins doesn't do so by a big margin so that we can have our treasured price wars :laugh:
But bk on topic i agree, i would love for the 6970 to be about the power of a 580 and even more so for the 6990 to be about the same as the 595 (i think that's what the dual gf110 card is being referred to as) as then it would be perfect for some great price drops, the recent price drops by nvidia to go against the 68xx cards is a perfect example of how far things can drop, if it was not for the power usage i would have got 2 470's for the same price as 2 6870's instead but to do that i would have wanted to get a better psu as i would have to overclock them :D
It is much more financially viable if you have a much more powerful component than your opponent to tweak it down, make it just fast enough but cheaper to produce, so that you can maximize profit margins. If it has potential to be 60% faster than the 5870 (15-20% faster than the 580 i am guessing), while consuming the same power and releasing the same heat as the GTX, AMD would instead underclock/volt it, to increase harvest rates, slim down the cooler and circuitry to decrease costs and make it only 5% faster. After all they are just a business...and as we all know they are after the monies and not after the e-peen
These are just my 2c about your "calculations" :p coz my calculatunZ™ show just the opposite, that the 6970 will be just under the 580 :D
I can't wait to see what the 6970 can do.
If so i think its very cool and innovative, It could work out great for people that are scared to overclock but at the same time it seems to hinder real enthusiasts. Sound expense also, i wonder if they will try to justify this as the reason why its going to be priced above the 580. Im just assuming it will be higher than the 580 because AMD's price have been steadily not being what they used to be.
It's no coincidence that both AMD and nV are using similar tech here, nV's just doesn't adjust clocks...that we know of.