In a surprising move, AMD pulled the launch date of Radeon HD 7970, a high-performance single-GPU graphics card based on the 28 nm Tahiti silicon, up to December 22, 2011; from its earlier launch date of January 09, 2012. The January date was a lot more than speculation, as older presentation slides from AMD to distributors and retailers talked specifically about it. The move to pull December 22 (next Thursday) spices things up in the run up for CES. First, it gives AIB partners full freedom to show off their custom-design graphics cards at the event, along with full details about GPU specifications and clock speeds.

According to a VR-Zone report, Radeon HD 7970 will launch on December 22, 2011, this will be the day you will be able to read reviews of the card (at least the AMD reference design board), online. It will be a limited launch (read: paper-launch), but one can expect "full" retail availability of the card by January 09. Another interesting bit of information is concerning the Radeon HD 7950. This card will be available in non-reference board designs from day one, it will however launch on January 09.

Reliable sources among AMD add-in board partners told DonanimHaber that the upcoming AMD Radeon HD 7900 series will introduce a new feature that other SKUs based on Southern Islands GPUs could also include. It's called Eyefinity 3D, and as the name might suggest, it's the next major update to Eyefinity, a technology that lets you span a single display head across up to six physical displays, and gives you the ability to use your available physical displays to accommodate multiple such display heads.

Eyefinity 3D adds support for 3D-optimized (120 Hz) displays, and lets you create large stereoscopic 3D display heads using a number of physical 3D displays. The technology behind this might not be as simple as it sounds, because the driver has to take into account the viewing angles of the displays in perspective to the user (as entered by the user), and calibrate the 3D image output. The same sources also hinted about the pricing of Radeon HD 7970.

Ladies and Gentlemen with graphics card upgrade plans, circle the date January 09, 2012, for this is going to be the day AMD will launch its next generation high-performance graphics cards in the Radeon HD 7900 series, according to reliable market sources DonanimHaber spoke with. On the 9th, AMD is expected to unveil at least two new SKUs in the HD 7900 series, most likely, HD 7970 and HD 7950. These will be based on the new 28 nm "Tahiti" silicon that will use completely redesigned number-crunching machinery, and a very wide memory bus.

If the word on the optical fibers is true, we are less than a month away from the launch of AMD's next high-end graphics card family based on its next high-performance GPU, codenamed "Tahiti". According to 3DCenter, AMD will launch new graphics card models based on this GPU around January 10, 2012. It is expected that we'll learn a lot more about these GPUs, maybe even come across AIB-branded graphics cards, at the upcoming CES event.

3DCenter compiled specifications of "Tahiti", based on bits and pieces of information from various sources. The specs can be listed out as:

• 4.50 billion transistors, die-area of 380 mm², built on TSMC 28 nm process
• Advanced GCN 1D architecture
• 2048 1D processing cores
• 128 TMUs, 48 ROPs
• 384-bit wide GDDR5 memory interface, memory clock slightly below 1 GHz, target bandwidth of 240~264 GB/s

In Gandhi's words, salt is as free as the air.

Today may be a Fringe-less Friday but worry not, there are plenty of thing to do like contemplating the two recently-leaked images of an AMD Tahiti-powered graphics card. Tahiti is a 'next-gen' GPU built on TSMC's 28 nm process that's supposed to be at the heart of the Radeon HD 7900 series models (the HD 7950, HD 7970, and then probably the dual-GPU HD 7990).

The card seen below comes with one Tahiti chip protected by a heatspreader/shield (only the die is exposed) and has a red PCB, a 5+1-phase PWM, two BIOSes, two PCIe power plugs, CrossFire connectors enabling quad-GPU configurations, and 12 memory chips which support previous reports of a 384-bit memory interface.

The Radeon HD 7900 series cards are rumored to debut in January at CES 2012 (January 10-13) so we still have one month of leaks to look forward to. Oh, and the winter holidays.

A Beyond3D forum member posted a mysterious picture of two graphics cards that could very well be engineering samples of AMD's true next-generation Radeon HD 7900 "Tahiti" graphics cards. The final products most probably won't look like these, with a bare red PCB, but it does look like the reference cooler design is ready. A more important feature in that picture is the spotting of traces for at least 11 memory chips, the 12th one (not highlighted) is apparently near the PCIe slot interface. The presence of 12 memory chips gives rumors of Tahiti featuring a 384-bit wide memory interface a shot in the arm. This will be the first AMD GPU in over 5 years to feature a memory bus wider than 256-bit. The R600 Radeon HD 2900 GPU featured a 512-bit GDDR4-capable memory interface.

AMD is on course to releasing its latest "Southern Islands" GPU family, and a fleet of desktop graphics card SKUs based on it, which will be led by a new high-performance GPU, codenamed "Tahiti", which will make up Radeon HD 7900 series; followed by performance GPU "Pitcairn", on which HD 7800 series will be based; "Thames" and "Lombok" making up the rest of the lineup. According to a report by DonanimHaber, HD 7970 (working name) is expected to be competitive with (or outperform) GeForce GTX 580, and priced at US $499. The HD 7950 will be competitive with (again, or outperform) GeForce GTX 570, being priced at US $399.

Things get interesting with Pitcairn, which is the successor of "Barts". This performance GPU is designed for sweet-spot SKUs, such as HD 7870 and HD 7850, which will be competitive with GeForce GTX 560 Ti / GTX 560, and priced at US $299 and $199, respectively. The Radeon HD 7670 will be particularly expensive, priced at US $179, followed by HD 7650 at $119. Further, it was reported that HD 7970 and HD 7950 will have a standard memory size of 3 GB.

As early as in September, we heard reports of AMD toying with Rambus XDR2 memory on its next generation of high-performance GPUs. Apart from our own community's response, that news met with a wall of skepticism as it was deficient in plausibility. New reports from Chinese websites have raised the topic again with fresh rumors that AMD will attempt to implement XDR2 on some of its next-generation ultra-high end products after all. XDR2, according to Rambus, can transport twice the amount of data per clock as GDDR5.

Apparently AMD and Rambus have had much more cordial relations with each other, than other companies the latter engaged in patent disputes with. In 2006, AMD settled outstanding disputes with Rambus by willing to pay licensing costs for certain technologies claimed by Rambus, turning a leaf in the relations between the two. What Chinese sources are suggesting now, is that AMD will design its high-end GPU (codename: "Tahiti") in a way that will let it support both GDDR5 and XDR2. Certain higher-end SKUs based on Tahiti will use XDR2, while the slightly more cost-effective SKUs will use GDDR5.