Friday, December 16th 2011
Radeon HD 7970 Raw Specs Leaked
If slide leaked on Orb-Hardware is to be believed we GPU consumers are in for a pretty big treat in the next month or so. The slide shown below states that the AMD 7970 will have a default core clock speed of 925MHz and a whopping 3 GB of GDDR5 memory.
It also sports a 3.5 TFLOPs precision floating point. Which would put it well beyond the NVIDIA flagship single GPU solution. The slide states the a ROP count of 32, against an earlier speculated count of 48. This could be because AMD may have delinked ROP clusters from memory bus. The cooler itself is under the trademark AMD black shroud so there is no way to see if it uses the rumored "vapor chamber" as seen in after market solutions.
Looking past all the beastly prowess of this slide one cannot help but think about power draw. The "leaked" slide states the 7970 will have a peak power draw of 300 W and an idle draw of 3 W. We will have to wait for review to see if any of these amazing stats are true.
Source:
OBR Hardware
It also sports a 3.5 TFLOPs precision floating point. Which would put it well beyond the NVIDIA flagship single GPU solution. The slide states the a ROP count of 32, against an earlier speculated count of 48. This could be because AMD may have delinked ROP clusters from memory bus. The cooler itself is under the trademark AMD black shroud so there is no way to see if it uses the rumored "vapor chamber" as seen in after market solutions.
Looking past all the beastly prowess of this slide one cannot help but think about power draw. The "leaked" slide states the 7970 will have a peak power draw of 300 W and an idle draw of 3 W. We will have to wait for review to see if any of these amazing stats are true.
58 Comments on Radeon HD 7970 Raw Specs Leaked
I'm a little disappointed with only 32 ROPS but I'm quite interested in GCN.
Over 3TFLOPs! I really need to upgrade my 2x 4850 now that I see these specs!
This new GPU looks more like a "Tri Graphics Engine" GPU (they gave it a fancy marketing name, GCN = "Graphics Core Next"), so essentially three Barts GPUs glued together (albeit at 28nm), each with dual 64-bit dual channel memory controllers, and this is why it has exactly 3GB of RAM.
Conclusion?
Anyone with a tri-fire HD6870 setup can tell us exactly how this HD7970 card will perform.
"Three HD6870s on a stick" (you can quote me on that)
for all we know, they could have beefed them up to be double as fast...
or maybe it just didn't improve performance enough to justify the extra die space...
after all they have been pretty beefy to start with...
Even if they some how manage to to make the ROPs twice as powerful, top-end Kepler has exactly 64ROPs and that is counting on nVidia some how doesn't know how to make their GPUs better.
But we still don't have anything about Kepler (at least not as much we know about HD7xxx) so we can only guess how Kepler will perform(and we could also say the same for HD7xxx).
Guessing the performance based on paper numbers can backfire (a.k.a. Bulldozer :laugh:)
Tell me what is the benefit for increasing the number of (ROPs) Render Output Units :confused:
Or is it (ROPs) Raster Operations :confused: Or what ever let call them ROPs :D
6 more days till we see the monsterous HD 7970.
AMD Radeon HD 7970 Launch Pulled Forward to 22nd December, Rumour Claims :eek: :eek: :eek:
www.itproportal.com/2011/12/16/amd-radeon-hd-7970-launch-pulled-forward-22nd-december-rumour-claims/
it's the last step in a graphics pipeline, where all data is put together to be copied into the framebuffer, which then gets displayed on the monitor...anti aliasing and depth information is also processed there... (overly simplified)
so increasing the number of those units would only benefit, when 1) the units have not been improved over the last generation and to get more performance you need to have more ROPs, or 2) they have not been fast enough already...
Also, dont forget about AMD's infamously fast driver support. They probably only optimized 3Dmark and Unigine for now, and Crysis 2 and other games are still rendering with the "VGA adapter driver" from windows 95.
4870 had 800 stream procs... 5770 also had 800 tweaked with DX11 instead of DX10.1, and performance was similar.
5870 had 1600 stream procs - was double the speed of the 4870 give or take.
2900 - 3800 -4800 - 5800 - 6900 are all general variants of the same concept, 7xxx series seems a bit more radical, uses a totally new approach - closer to the 1950XTX to 2900XT shift (again, take with a lethal dose of salt purely my 2c)
- Batman: Arkham City under DX11
- Battlefield 3 on Ultra Preset, no custom bullshit
- Metro: 2033 because its the new Crysis
- Metro: Last Light upon release
- Skyrim because people will froth if it isn't benchmarked... and then they'll froth anyway.
- Witcher 2 with and without Ubersampling
And by the way, unless all the major sites have had 7970s since the beginning of December, I doubt we're going to see "reviews" including benchmarks next Thursday. Which is fine because I wouldn't want to see a 7970 benchmarked on pre-12.1 drivers anyway.Wouldn't mind seeing these benchmarks on 120Hz monitors as well, now that I think about it. This vSync idiocy needs to end.
www.anandtech.com/show/4455/amds-graphics-core-next-preview-amd-architects-for-compute