Subject: Graphics Cards | July 19, 2013 - 02:13 AM | Tim Verry
Tagged: Tahiti XT, sapphire, radeon hd 7990, hd 7990 atomic, hd 7990, dual gpu, 7990
Sapphire appears to be preparing to unleash a factory overclocked dual GPU card called the Radeon HD 7990 Atomic. EXPReview managed to uncover several photos and specification details of the upcoming graphics card. It is quite an impressive card, that features a custom PCB, beefy power delivery electronics, 6GB of total GDDR5, and (best of all) two AMD Radeon HD 7970 GPUs cooled by a full cover closed loop water cooler!
The Sapphire HD 7990 Atomic is based around a custom 12-layer PCB. The card also features an 18-phase VRM, 50A chokes, LFPAK MOSFETS, and Tantalum capacitors. Sapphire has divided the total 18-phase VRM up such that each GPU and 3GB of memory gets 6+2+1 power phases. Of course, the HD 7990 Atomic uses two AMD Radeon HD 7970 GHz Edition GPUs for a total of 4,096 stream processors.
Sapphire has not released clockspeed information, but it should be overclocked significantly beyond the company’s existing dual gpu 7990 card’s base and boost clockspeeds of 950 MHz and 1000 MHz.
Other features include a PLX PEX8747 PCI-E 3.0 bridge chip that connects the two 7970 GPUs together, a dual BIOS switch that will allow users to run the 7990 at stock or at overclocked speeds, and a single crossfire connector to enable quad-Crossfire multi-GPU setups. The graphics card is powered by three 8-pin PCI-E power connectors. Finally, it provides six mini-DisplayPort video outputs.
In order to effectively cool the factory overclocked card, Sapphire is bundling a pre-installed self-contained liquid cooler. The closed loop cooler consists of a full cover water block on the HD 7990 Atomic, a 240mm radiator with two 120mm fans, and a combination pump and reservoir that fits within a 5.25” optical drive bay.
Naturally, how much this card will cost and where it will be available is still unknown. With that said, ChipLoco indicates that the card is coming sometime within the “next few weeks.” The extent of the factory overclock is also unknown. It is definitely a high end card worthy of enthusiasts and overclockers. Unfortunately, it utilizes a custom PCB, so it may be difficult to find alternative blocks should users wish to integrate it into their existing custom water loops.
Subject: General Tech, Graphics Cards | July 4, 2013 - 06:02 PM | Scott Michaud
Tagged: radeon hd 7990, frame rating, amd, 7990
Editor's Update (Ryan): After the long holiday I finally got around to asking AMD for an official response to this rumor. AMD says simply:
"Plain and simple: AMD has not EOL'd the world's fastest graphics card, the AMD Radeon HD 7990."
Obviously the company is steadfast that the report from WCCFTech is incorrect so I eagerly await the new driver due by July 31st for improved frame pacing and multi-GPU performance!
WCCFTech caught wind, via Overclockers.Ru, of a Radeon HD 7990 cancellation rumor. The flagship card, codenamed after the Mediterranean island, "Malta", contains two Graphics Core Next (GCN) GPUs in Crossfire. Before the canonical AMD design, certain third-party add-in-board (AIB) partners created their own designs with the 7990 moniker with a pair of 7970 GPUs as its foundation. The first official 7990s launched in April 2013.
But, it did not have the best reception.
Never Settle, get it before it settles.
The two main issues regarding 7990 adoption are, according to WCCFTech, micro-stuttering with Crossfire setups and the better dollar value of paired 7970s. The 7990 comes in at the thousand dollar ($1000 USD) price point despite being, for all intents and purposes, nearly identical to a pair of separate 7970 cards. While the 7990 has access to a superior "Never Settle" bundle when compared to twin 7970s, with the addition of a Deux Ex: Human Revolution license, it would be difficult to consider that as an excuse for the $200-$300 USD price gap.
Cost aside, this would be a really odd time to cancel the 7990. The product was launched just a few months ago, despite similar price concerns, only to be allegedly killed right before the driver that makes it worth its weight? If true, either AMD decided to annul their "mistake", or we will get some interesting news when the frame pacing driver finally gets released.
While pure speculation, my immediate reflex would be that AMD had some problem during the development of their frame pacing driver. The initial results presented by Ryan showed a great improvement, but what about a pair of 7990 cards? The way in which they, allegedly, are killing off the 7990 would suggest something abrupt came up.
Hopefully, for AMD, that was not the case.
Subject: Graphics Cards | May 10, 2013 - 07:25 PM | Jeremy Hellstrom
Tagged: titan, radeon hd 7990, nvidia, amd
If you have been wondering how the two flagship GPUs fare in a battle royal of pure frame rate you can satisfy your curiousity at [H]ard|OCP. They have tested both NVIDIA's TITAN and the finally released HD7990 in one of their latest reviews. Both cards were force to push out pixels at 5760x1200 and for the most part tied, which makes sense as they both cost $1000. The real winner was Crossfired HD 7970's which kept up with the big guns but cost $200 less to purcahse.
If that isn't extreme enough for you, they also overclocked the TITAN in a seperate review.
"We follow-up with a look at how the $999 GeForce GTX TITAN compares to the new $999 AMD Radeon HD 7990 video card. What makes this is unique is that the GeForce GTX TITAN is a single-GPU running three displays in NV Surround compared to the same priced dual-GPU CrossFire on a card Radeon HD 7990 in Eyefinity."
Here are some more Graphics Card articles from around the web:
- AMD's Radeon HD 7990 @ The Tech Report
- Diamond BV750 Low Profile 7750 @ Bjorn3D
- XFX Radeon HD 7790 Black Edition 1GB Video Card Review @ Madshrimps
- AMD Radeon HD 7790 2GB review: does another 1GB make a difference @ Hardware.info
- PowerColor HD 7790 Turbo Duo 1GB Video Card Review @ Hi Tech Legion
- AMD Radeon HD 7790 vs. Nvidia GeForce GTX 650 Ti BOOST @ X-bit Labs
- Sapphire HD7790 2GB OC @ Kitguru
- XFX R7790 Black Edition 1GB Review @ Neoseeker
- PowerColor Radeon HD 7790 TurboDuo OC 1GB @ eTeknix
- AMD Radeon HD 7990 6GB and HD 7970 GHz Edition Video Cards in CrossFireX @ Tweaktown
- AMD Radeon HD 7990 6GB Dual GPU Video Card Overclocked @ Tweaktown
- 15-Way Open vs. Closed Source NVIDIA/AMD Linux GPU Comparison @ Phoronix
- ASUS GTX650-E-2GD5 @ Hardware.info
- EVGA GeForce GTX TITAN 6GB SuperClocked Video Cards in SLI Overclocked @ Tweaktown
- Inno3D iChill GTX 650 Ti Boost 2 GB @ techPowerUp
- EVGA GeForce GTX 650 Ti Boost SuperClocked 2GB @ Tweaktown
- ZOTAC GTX Titan AMP! Edition @ Bjorn3D
- ASUS GTX 650 Ti Boost DCII @ Bjorn3D
- Asus GTX 670 DirectCU Mini 2GB @ eTeknix
Subject: Graphics Cards | August 23, 2012 - 11:17 AM | Tim Verry
Tagged: radeon hd 7990, hd 7990, graphics card, dual gpu, amd
Today, more rumors emerged on the ever elusive dual-GPU AMD graphics card. Reportedly, graphics card vendor PowerColor will be one of the Add In Board (AIB) partners producing the Radeon HD 7990. Previous rumors suggested that the HD 7990 would be comprised of two Radeon HD 7970 GPUs and it would be available in late August 2012. While there is no confirmation on the release date, the PowerColor 7990 "Devil 13" graphics card is using two 7970 GPUs in CrossFire on a single PCB.
Back in July, some details emerged on the 7990 that the PowerColor card rumors do not seem to disprove. Some highlights from the rumor mill so far include:
- The 7990 will use two 7970 Tahiti XT GPUs connected by a PLX chip.
- 6GB of GDDR5 memory (3GB per GPU)
- 4,096 stream processors, 64 ROP units
- (at least) a dual slot design with three fan cooler
- Four mini DisplayPorts and two Dual Link DVI video outputs
- Four 6-pin PCI-E power connectors
The earlier post did also mention that the default clock speed would be 850 MHz, but that does not seem to be the case with the PowerColor model. There may still be Radeon HD 7990 cards that come clocked at that speed, however.
As for the PowerColor model specifically, the new rumors suggest that it will be part of a limited run with a total of 500 cards. Coming in a red and black design, the three slot graphics card will use two 7970 GPUs clocked at 925 MHz in CrossFire. While there is no shot of the other side of the board to see how many PCI-E connectors it has, it will reportedly draw as much as 400 Watts. Using a BIOS switch, you will be able to choose between default and factory overclocked clockspeeds for both the GPU and GDDR5 memory.
Videocardz managed to unearth a photo of the elusive dual GPU AMD card.
When in its default mode, the card will run the GPU at 925 MHz and the memory at 5500 MHz (effective), which is the same as the Radeon HD 7970 single GPU graphics card. After flipping the BIOS switch, the card will use overclocked speeds of 1000 MHz for the GPU and 5500 MHz for the memory (so the GPU is the only part getting overclocked, according to the rumors).
According to Videocardz, the PowerColor 7990 has been refined somewhat compared to a showing at Computex earlier this year. From the photos comparison, it looks as though the company has changed out the red PCI back plate for a standard silver color rather than the custom red version. Also, the three fans are slightly different models. It appears as though the card will provide two DVI outputs as well as a full-size HDMI and two mini DisplayPort outputs. The site claims that AMD will not be releasing any reference version and has given its partners free reign to engineer and design custom versions (perhaps we’ll see a massive 12GB version heh).
While there is no word on when this card will be released, according to sources speaking with Hardware Canucks, the Powercolor 7990 “Devil 13” will cost between $899 and $999 in the US. While not the card that many were likely hoping for (because of the price), it may well be the best that users hoping for a dual Graphics Core Next card will be able to get–assuming you can get your hands on one of 500 available cards. NVIDIA has had its own dual GPU GTX 690 on the market for some time now, and it is looking more and more likely that AMD is not going to have an answer any time soon in any big way (outside of limited edition runs from partners that design their own custom versions), and that’s unfortunate.
I speculated that users would be better off with two single Radeon 7970s in CrossFire, and I still believe that is likely the best option right now. Especially if you opt for the 7950 with PowerTune boost (which we recently reviewed) or 7970 GHz Edition cards with boost as it is looking like the 7990 will not have that functionality.
What do you think though, are you still holding out for the ever-elusive 7990?
You can find more coverage of the AMD Radeon HD 7990 by following the 7990 tag!
Subject: Graphics Cards | July 25, 2012 - 11:56 AM | Tim Verry
Tagged: radeon hd 7990, GCN, dual gpu, amd, 7990
The long-awaited dual GPU Graphics Core Next architecture Radeon HD 7990 has missed its original Computex reveal and will likely miss the July release suggested by previous rumors. Interestingly, VR-Zone China reportedly has some updated information on specifications and release date.
The 7970. Expect the 7990 to have a much larger PCB and heatsink!
The dual GPU 7990 will allegedly not be released until at least late August 2012. Further, it will be powered by four six-pin PCI-E power connectors, and will have 6GB of GDDR5 memory (total, 3GB per GPU). Connecting the two 7970 Tahiti XT GPU cores in CrossFire will be a PLX chip – similar to that found in the dual GPU NVIDIA GTX 690 graphics card. As far as video outputs, you can expect four mini-DisplayPorts and two dual-link DVI connectors.
Additionally, previous rumors suggested that the GPU cores would be clocked at 850 MHz, but that may not be the case now that AMD is seeing much better binning with its GHz Edition chips. Also unclear is whether or not the Radeon HD 7990 will have any sort of Powertune with Turbo boost technology like the 7970 GHz Edition. Being based on two 7970 GPU cores, you can look forward to 4,096 stream processors, 64 ROP units, and a dual slot design with three fans providing cooling for the heatsink.
Right now, AMD does not have an answer to the NVIDIA GTX 690 which has been on the market for a while. At this point, you may be better off getting two 7970 GHz Edition graphics cards and putting them in CrossFire. Granted, they are going to take up more space in your case but you can get them today, they will have GPU boost, and will likely cost less to boot. With that said, I do understand the allure of a dual GPU AMD card based on GCN and hope to see it soon.
Stay tuned for more Radeon 7990 coverage as it arrives.
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