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Last year AMD released the Northern Islands architecture starting with the Barts graphics processors, which was then followed by the Cayman architecture. The Northern Islands graphics cards have since become an extremely successful series, but the product range as we know it was an adaption on AMD's part to compensate for TSMC cancelling their 32nm process in favor of 28nm. This forced AMD to release a second generation of 40nm parts. All those issues are behind AMD now, as its "Southern Islands" architecture finally is among us, bringing with it the first 28nm GPU codenamed “Tahiti”.
The first AMD card to utilize this new architecture is the high-end Radeon HD 7970. This new card uses the “Tahiti XT” GPU which aside from being built on 28nm process also uses the brand new AMD “Graphics Core Next” architecture. Graphics Core Next (GDC) is a revolutionary new architecture that eliminates the previous VLIW design for a non-VLIW SIMD engine. Additionally, the “Tahiti XT” core includes 2048 stream processors, 32 raster units, 128 texture units and has a transistor count of 4.31 billion. Just looking at the specifications alone, one can see that the HD 7970 is going to have no issues pushing pixels, but with the GCD architecture it also has up to 1.3 times the compute power of previous generation cards.
Along with the changes to the architecture, AMD has expanded the video output features of the graphics card and kicked up the thermal performance. On the video front, AMD has expanded upon the Eyefinity ecosystem by including features such as stereoscopic 3D support across three displays and support for up to five independent audio streams via the HDMI and DisplayPort outputs. Moving on over to the new thermal solution, AMD has kicked the heatsink up a notch by including their sixth generation vapor chamber design and an improved blower style fan that not only pushes more CFM than the previous generation design, but also features better acoustic levels.
The last few paragraphs give a small overview of what the HD 7970 brings to the table, so throughout our review we intend to cover as much of the architecture and features as we can. It is important to note that the HD 7970 is not yet available commercially at time of writing. While the official launch date for the HD 7970 is slated for January 9th 2012, AMD bumped up the review date to December 22nd 2011 so as of now this is a paper launch. The hard launch remains set for January 9th.
The only thing I have to disagree with you on is that it's overpriced... or rather, it's not 'relatively' overpriced compared to Nvidia's GTX 580. For having an average of 25.8% higher performance in 2560x1600 (With only a single score under 18% difference) I think the $50 (10%) more you pay over the GTX 580 is worth it if you're spending that much to begin with. On a whole though both cards are overpriced.
Add on to that all the new or improved features and it's a pretty solid package imo, even though I was hoping for a bit more from the 28nm node.
ATI is trying to take advantage of its new GPU as the "fastest single-core chip" before Kepler is out. The price will be lowered afterwards plus some performance improvements through new drivers.
Was going to opt for one of the new Sapphire Dual Fan 6970s but since in a months time the 7xxx series will be out, will probably wait until these get on the market.
Only issue is that I can't fit a full 275mm GPU in my case. Ideally needs to be less than 250mm.
TBH after the failings of the FX/Bulldozer CPUs, AMD does need this to hit the market strong, since for the past years nVidia have been infront of AMD on performance. Seems AMD is starting to go for better price/performance instead of trying to compete head on with Intel.
Mind you, if the Piledrivers improve the Bulldozer architechture and fix it's issues (by having 8 true cores instead of modules), and manages to fit an AM3+ socket, then I might be tempted to go for one of them aswell.
The 6970 was only around $300 at launch, so I honestly expected this one to be around $400. AMD is not going to sell many cards with this price point, because to be honest, it's NOT worth it. A 15% increase over a 580 in most cases is awful, not only because it's 28nm, but because it's a whole new Architecture.
Overpriced, underperforming, not worth it. I'll wait for Kepler.
Also, the HD 6970 had an MSRP of closer to $400 at launch, so it was expected this card would retail higher due to the better performance.
Anyway, this should be at $400, if it were $400, it would be reasonable for sure. $350 would be the sweet spot that would really just destroy Nvidia. The thing I love about AMD/ATI's cards were the fact that they offered the best price/performance. $550 is absolutely overpriced, you can't even argue it. The GTX 580 is also overpriced, and while this does beat out the 580 for a similar price ($50 more than the 3GB 580), this is a standard reference next-gen card. It should be around the same price as their standard current gen cards, or around $50 more. It's nothing amazing in the performance department, either. If it had a solid 40%-45% increase over the GTX 580, I could see $550.
That said... I was still expecting a bit more wow factor, I'm guessing the 7990 when that comes around will do the big leap though much like the 6990 did. Maybe we can get a MARS version...
the price is high, but what do you expect? its new tech. they are always overpriced initally. sure, the initial price is high, even by those standards, but im sure if you wait a month or two, it will drop considerably. in any case, i believe that the extra price is partly justified with all the features offered, ecpecially considering that it has some better power management technology added in, as well as the improvements to eyefinity with the audio and the 3d features. i myself wouldnt use such a feature (the 3d), but hey, its there for others if they want it. ive never really understood the hype behind 3d anyway.
i say let people wait until its cheaper, and then im sure it would be a great value card.
I believe anandtech did a test with pci-2.1 and there was no difference in gaming. In GPGPU calculations there was something like a 7-10% performance loss. Don't have the exact numbers in front of me though.
^Fanboy squeal amirite?
Anyway, although the performance is great on this card, I'm particularly interested in the cooling. I hope NvIDIA takes a leaf out of AMD's book and improves the cooling solutions on their future cards, as I'm not terribly interested in going back to AMD in the future (NVIDIA is just a more logical choice, considering its feature set and software support).
I look forward to a review of a 670 or 680 card (or equivalent, though I don't see them changing it).
My jaw drops at the thought of a 690 GPU though, I can only imagine how epic that card will be (performance and price wise XD).
Normally I would've gone for an Intel+nVidia build but to build it to the spec I would've wanted it would've cost me around £1000 atleast and I don't have that kinda money. AMD seems to have move to competing on price, hence why I've gone for an AMD build at a little over £500. However I've noticed alot of games are displaying nVidia logos on.
Granted I might not have explored every type of card on there but I'm going by what I've seen so far.