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AMD Radeon HD 7990 6GB details leak

AMD Radeon HD 7990 6GB details leak

AMD's upcoming dual-GPU monster the Radeon HD 7990 6GB is rumoured to include six display outputs and require four six-pin power leads.

Details of AMD's upcoming Radeon HD 7990 6GB dual-GPU have leaked, ahead of a rumoured August launch date, revealing an interesting approach to power regulation.

AMD's answer to rival Nvidia's GeForce GTX 690, the Radeon HD 7990 6GB is rumoured to pack two Tahiti XT graphics cores alongside a total of 6GB of GDDR5 memory running at 1,500MHz on a PCI Express 3.0 high-end graphics board. With those kind of figures, AMD is going to need some serious power - and a leak claims to reveal how it plans to get it.

According to anonymous sources speaking to VR-Zone, the Radeon HD 7990 6GB is to include four six-pin power connectors rather than the more common two eight-pin connectors. The reason for this somewhat odd decision, the site's sources claim, is power regulation through a multiphase system split into three groups: one for the GPUs, one for the memory, and one for the PCI Express controller itself.

The site's sources also indicate that the board will include six display outputs: four mini-DisplayPorts and two DVI connections. Support for all the multifarious AMD technologies, including EyeFinity and HD3D, will naturally form part of the system.

So far, AMD is keeping quiet on the accuracy of the rumour. While it has already confessed it's working on a dual-GPU design to knock Nvidia's GTX 690 from the top spot, it's keeping firm details quiet - largely, it is claimed, due to a schedule slip from an originally planned June sampling. With sources giving August as the earliest possible launch date, but not preferring a likelihood of the board actually arriving before Christmas, we could have a while to wait in order to see if the rumours are true.

18 Comments

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rollo 30th July 2012, 12:56 Quote
300 watts in 6pin connectors another 75 from Pcie slot itself, that's gonna need some monster cooling capacity If its accurate.
Chicken76 30th July 2012, 13:05 Quote
Quote:
Originally Posted by Article (third paragraph)
According to anonymous sources speaking to VR-Zone, the Radeon HD 6990 6GB is to include four six-pin power connectors ...
Shouldn't it be 7990 instead of 6990 ?
Gareth Halfacree 30th July 2012, 13:10 Quote
Quote:
Originally Posted by Chicken76
Shouldn't it be 7990 instead of 6990 ?
Whoopsie - typo fixed, ta.
damien c 30th July 2012, 13:17 Quote
4x 6 pin for a single card?

Can't wait to see the reviews of it to see just how big and power hungry it is.

Bet it will be noisy as well.
Kovoet 30th July 2012, 13:30 Quote
Can't wait to see it and see the test results. Is the price going to be under the 690 as well. It'll have to be a wow factor for me to change from a 7970 as at the moment the games aren't challenging enough for the 7970, 680 or the 690 as it is.
stanonwheels 30th July 2012, 14:03 Quote
That's going to run crazy hot - Which usually means gorgeous 3rd party heatsinks and stupid over the top designs. Hopefully something in batshit ROG flavour. Nice.
greigaitken 30th July 2012, 14:23 Quote
*cough* leaked *cough* um yeah what an accident oh noes
blacko 30th July 2012, 15:03 Quote
can you run it in Xfire though!
Anakha 30th July 2012, 15:13 Quote
Quote:
Originally Posted by Kovoet
Can't wait to see it and see the test results. Is the price going to be under the 690 as well. It'll have to be a wow factor for me to change from a 7970 as at the moment the games aren't challenging enough for the 7970, 680 or the 690 as it is.
Try running a 27" 1440p monitor or three.
dyzophoria 30th July 2012, 16:15 Quote
well depends if its because of splitting the power systems that we have 4 connectors, maybe just maybe it wont run that hot,lol
Hanoken 30th July 2012, 18:10 Quote
hm, well from what I am seeing... AMD is pushing all it can to gain performance over Power consumption and cooling... hopefully it achieves this because if the performance is not 690 par or above... it will be another blow to AMD
Jimbob 30th July 2012, 19:19 Quote
The big problem with my HD6990 is heat and noise and that "only" uses a pair of 8 pins. It also dumps half of the heat in the case which is annoying. Under full load it hits 98c and sounds like a hairdryer possesed by the devil!

If this is worse it sounds like a card to avoid!
ssj12 30th July 2012, 19:20 Quote
From the sounds of it, even if the HD7990 is faster, it will be hotter and way more power hungry.
Elton 30th July 2012, 20:40 Quote
Have they ever considered making an X2 card where the 2nd card just has the GPU processor? Seeing as the RAM on the 2nd card is merely a framebuffer clone, could they not hypothetically just use one set of VRAM instead of two? (Given that the 2nd set is just cloned).
Pookeyhead 30th July 2012, 21:08 Quote
4x 6pin.... LOL Stupid. This thing will suck up power like there's no tomorrow. Dunno about you, but I'm sick of stupidly power hungry GPUs. It was the lower power draw of the 670s that made me get rid of my 580s, even though I now have fewer CUDA cores - something important to me. Games performance is better, but I took a hit on video encoding speeds when using the GPUs.

I'm interested to see how it performs, and how much more power it draws than the 690. My guess is a few percent faster, but massively more inefficient.
rollo 30th July 2012, 23:41 Quote
Well I dout its 2 7970 ghz editions bolted onto a card

More likely 2 7970s underclocked a bit

Stock 7970 is not a quiet card.
TheDarkSide 31st July 2012, 18:38 Quote
Quote:
Originally Posted by Pookeyhead
4x 6pin.... LOL Stupid. This thing will suck up power like there's no tomorrow. Dunno about you, but I'm sick of stupidly power hungry GPUs. It was the lower power draw of the 670s that made me get rid of my 580s, even though I now have fewer CUDA cores - something important to me. Games performance is better, but I took a hit on video encoding speeds when using the GPUs.

I'm interested to see how it performs, and how much more power it draws than the 690. My guess is a few percent faster, but massively more inefficient.

how exactly do you have fewer cores now?
670= 1344 CUDA cores
580= 512 CUDA cores
Mrmelon98 1st August 2012, 18:11 Quote
6GB!?!?!? I still can't imagine the average gamer using all of that bandwith....
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