Saturday, December 31st 2011

Sapphire Readies Radeon HD 7970 Cards with 1335 MHz Core Clock, 6 GB Memory

It looks like AMD's claims of HD 7970's extreme overclocking capabilities weren't the usual PR hoopla. A confidential company document revealing the non-reference models Sapphire has in the works, got leaked to the web, and it is a bundle of surprises. To begin with, Sapphire plans no less than six non-reference Radeon HD 7970 models apart from the vanilla AMD reference design card. Among these, the top-of-the-line cards are codenamed "Atomic RX" and "Atomic WC". One can guess that the "RX" is an air-cooled card, and the "WC" a water-cooled one. It packs blistering clock speeds of 1335 MHz core, with 5735 MHz (1433 MHz actual) memory.

The other card that caught our eyes is codenamed "FLEX 6G". The Flex variant typically features a flexible display output configuration. This card is said to have six mini-DP connectors. While this card sticks to AMD reference clock speeds, it packs a whopping 6144 MB of video memory, all wired to a single GPU. While 4 Gbit GDDR5 chips don't exist, we expect Sapphire to be using 24 * 2 Gbit chips on this card, with twelve sets of two chips sharing 32 bit paths. Then there are other milder factory overclocked cards apart from the Atomic; there's Toxic 3G, and VaporX 3G, both packing impressive out of the box clock speeds.

Source: ChipHell
Add your own comment

85 Comments on Sapphire Readies Radeon HD 7970 Cards with 1335 MHz Core Clock, 6 GB Memory

#1
theoneandonlymrk
wow look genuine too though could be otherwise , has anyone seen anything similar with waterblocks on not Ln2
Posted on Reply
#2
ensabrenoir
:eek::eek::eek:

I .....may..... not be going nvdia on my new build. Gonna go back to school to learn how to design something that will take advantage of two of these in xfire...more likely. When it comes to video cards amd rocks. Its all that ati dna.
Posted on Reply
#3
Psychoholic
Impressive!

I think they should bump it up 2 more mhz, for 1337 mhz :P
Posted on Reply
#4
alexsubri
6GB is a little ahead of its time, however higher resolutions require higher vram
Posted on Reply
#5
KRONOSFX
crazyeyesreaper
with 1335mhz core that is a 31% overclock taking W1zzards overclock results and extrapolating the data that would be a 29% performance boost

essentially 15% oc w1zz saw a 14% performance bump double those numbers = 31% 925 / 1335 = .69 x 100 = 31% so if 15% oc is 14% performance 30% would be 28 and 31 = 29%

this should result in around a 5-6% performance boost OVER the HD 6990 / GTX 590

It also results in the HD 7970 being a comfortable 40% faster then a GTX 580
1335/925=44%
what you got(31%) means how much slower would be default clocked 7970 compared to this superclocked one. 100/144=69% -> 100%-69%=31%
So Here is a new calculation.
44% lets say it will give 40% boost
so Relative performance (1920*1200)
GTX580 84%
7970 100%
HD6990 117%
GTX590 122%
OC 7970 140%
This card would be 140/122=15% faster than the second fastest card.
Comparing to GTX580: this card would be 67% faster.
Posted on Reply
#6
the54thvoid
KRONOSFX said:
crazyeyesreaper

It seems someone doesn't know math.
1335/925=44%
what you got(31%) means how much slower would be default clocked 7970 compared to this superclocked one. 100/144=69% -> 100%-69%=31%
So Here is a new calculation.
44% lets say it will give 40% boost
so Relative performance (1920*1200)
7970 100%
HD6990 117%
GTX590 122%
OC 7970 140%
This card would be 140/122=15% faster than the second fastest card.
lol, was doing a post to correct you then realised you are right. The 410MHz diff between clocks should be divided by the stock clock of 925 to gauge the speed faster than the stock (which is 44%).
Posted on Reply
#8
Trigger911
Isnt it rule of thumb to have sys ram to cache the video ram ... guess people will need to jump up to an 8gig setup if they buy one of these beast
Posted on Reply
#10
KooKKiK
From the slide, so Tahiti is partially disabled after all ??? :(
Posted on Reply
#11
EpicShweetness
*reads post*
*opens side panel*
*Yells obscenities at old 5870*
*closes side panel*
*cries in a corner*
Posted on Reply
#12
Millennium
Trigger: For DX9 you need to cache the entire GPU memory, so yes! Madness, 6gb GPUs 4tw.

In general, I really like this new architecture and performance from AMD. And the amazing overclock for a retail card shows they really nailed this new process this time.

Now (JF-AMD if you are reading) please please make the 7950 unlockable, even partially unlockable, and AMD will have a huge hit on their hands. Please please make this happen! OMG!111
Posted on Reply
#14
crazyeyesreaper
Chief Broken Rig
KRONOSFX said:
crazyeyesreaper

It seems someone doesn't know math.
1335/925=44%
what you got(31%) means how much slower would be default clocked 7970 compared to this superclocked one. 100/144=69% -> 100%-69%=31%
So Here is a new calculation.
44% lets say it will give 40% boost
so Relative performance (1920*1200)
GTX580 84%
7970 100%
HD6990 117%
GTX590 122%
OC 7970 140%
This card would be 140/122=15% faster than the second fastest card.
Comparing to GTX580: this card would be 67% faster.
the54thvoid said:
lol, was doing a post to correct you then realised you are right. The 410MHz diff between clocks should be divided by the stock clock of 925 to gauge the speed faster than the stock (which is 44%).
yea hadnt slept yet so you can save the insult about math, i did it in google search lolz after not sleeping for 2 days. still 30% is a more realistic performance bump as i would expect at 1335 the ROPs will become a limiting factor much like 5850 vs 5870 with intense overclocks
Posted on Reply
#15
the54thvoid
crazyeyesreaper said:
yea hadnt slept yet so you can save the insult about math, i did it in google search lolz after not sleeping for 2 days. still 30% is a more realistic performance bump as i would expect at 1335 the ROPs will become a limiting factor much like 5850 vs 5870 with intense overclocks
Yeah , was jumping in to defend your math and then realised myself. Quickly deleted my post and then reposted. But no need for the math insult, i agree.
Posted on Reply
#16
badtaylorx
does anyone else here get a chubby when thinking about the possibilities of an asus ARES II???
Posted on Reply
#18
Valdez
Millennium said:


In general, I really like this new architecture and performance from AMD. And the amazing overclock for a retail card shows they really nailed this new process this time.
And this is only the first generation of the 28nm process. The 55 and also the 40nm process saw a rebirth.

I also agree, this was a strong start, maybe we are going to see a full 2304 sp tahiti with higher clock speed than 925 mhz later.
Posted on Reply
#19
v12dock
KRONOSFX said:
crazyeyesreaper

It seems someone doesn't know math.
1335/925=44%
what you got(31%) means how much slower would be default clocked 7970 compared to this superclocked one. 100/144=69% -> 100%-69%=31%
So Here is a new calculation.
44% lets say it will give 40% boost
so Relative performance (1920*1200)
GTX580 84%
7970 100%
HD6990 117%
GTX590 122%
OC 7970 140%
This card would be 140/122=15% faster than the second fastest card.
Comparing to GTX580: this card would be 67% faster.
PLUS driver optimizations >70% :eek:
Posted on Reply
#20
Dj-ElectriC
My reaction when i woke up and saw the article title:



This picture sais everything, i dont need to add a single word
Posted on Reply
#22
alwayssts
I love the guys explanation, as its totally plausible.

Essentially, Release 7870 as the fastest single card, even if conservative and only by 10% at stock. Exploit for high dollars (and overclock versions) while building yields. As the price drops down to $300 over time, release the stock full tahiti at a price right above the overclocked versions of 7870. Call it the 8000 series. Make more money than releasing the full version right away.

They must figure thats essentially what nvidia did last gen, and it worked out well. Without figuring in the fact gf100 and 104 were essentially broken, gf110 and 114 were just fully-enabled designs released at a later time to maximize yields and revenue.

When nvidia released 460, it had no direct native competition. When Barts came along and 460 prices were in the toilet, so did the 560ti. 480...cayman...580.

I wonder if 8970 will use that shiny new .28ns gddr5 samsung is sampling to...somebody ;)
Posted on Reply
#24
mediasorcerer
I was reading that oc,d they can get up to almost 6990 perf in some games.

Pretty nice unit.
Posted on Reply
#25
lastcalaveras
knowing asus they'll have a matrix edition that will be able to overclock to about 1500Mhz+
Posted on Reply
Add your own comment