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

[twicksisted]

Thats not exactely true, this could be a better binned more expensive model... it could be anything, at this point we just dont know... what we do know is that its a different card as its got 6gb and not 3gb onboard.

 

[cadaveca]

2304 S-Pro?

 

[dj-electric]

Well for starters, fake news.
A professional overclocker (korrrhonen) couldnt reach more than 1285Mhz with watercooling and Sapphire's aircooled card does better? Also, even impossible for the Sapphire's watercooled version. 1125MHz maybe, but not 1325MHz.

In november 2009 i got the XFX Radeon HD5850 1GB card
the card was the best overclocker i have ever seen, reaching 835MHZ core from 725 on stock voltage and reaching 1GHZ at 1.28V.

a few months after that i got the sapphire blue-PCB HD5850 1GB
this card could reach 925MHZ core on stock voltage and could reach 1GHZ on 1.18V only

I could not believe the differance in voltage needed for 1GHZ between PCBs. i have tested more reference cards and more sapphire cards but the results kept the same.

HD7970 came and again changed everything that we ever thought about flagship GPU overclocking.
my 2 cents...

 

[WhoDecidedThat]

thats a different card... that screenie of yours is a 3gb card not the 6gb card they talking about in the thread...

You are wrong. The 1335 MHz card(ATOMIC WC/RX)they are talking about is a 3 GB card. The 6 GB card (flex 6g) isn't overclocked.

 

[dj-electric]

But, it is based on the same PCB so good overclocking abilities are almost promised with this core

 

[bear jesus]

i would agree that the chips seam to clock pretty well in general but i have to wonder if the 1335mhz cores have been specially binned for the purpose, either that or if the default voltage is much higher than the default voltage of the normal cards although saying that i expect the voltage to be at least a little higher on them anyway, if not then i would be extremely impressed by the cores used.

Either way this has been enough to make me not buy as soon as they are available, i want to see some reviews on the 1335mhz cards and even more so as with the first reference model reviews a bunch of sites did not manage to max out the overdrive limits so either it was something on their end (fan speed/powertune settings too low) or there will be quite a range of overclock results so i would very happily wait for the cards with a guaranteed 410mhz overclock and also to see how they compare to other available overclocked models before i decide for sure which company gets my money.

 

[WhoDecidedThat]

A leaked Sapphire document revealed a Tahiti GPU with 2304 cores. AMD however confirms that there are no hidden cores. The chip has 2048 shaders, so the 2304 number from Sapphire is likely a mistake, or part of a test by AMD to find out which partners leak specifications to members of the press.

This info has been confirmed by Mr. Hook, Senior PR exec from AMD.

- Guru3D

 

[Chappy]

This really is something that "Nvidia partners concerned about AMD's 28nm lead. Even if Kepler were a bit faster than 7970 (Stock Speeds) how about the 1335Mhz clock speeds? It's all going to be about the OC potential of kepler to beat AMD's Taihiti.

 

[dj-electric]

This thing^ has already kinda proofed as wrong, it's all fud speculation all over again. They create buzz from dust they find. But, about the 1335Mhz clocked HD7970,
there's a good chance that this thing will be faster the Kepler's flagship but again, who knows

 

[Chappy]

I like nvidia but I think this time they'll be 2nd in performance..., If 7970 can reach clock speeds up-to 1.1Ghz in stock voltages then they can really easily ramp up those clocks to 1335Mhz with a little or few voltage tweaking. Can't wait to see MSI's R7970 Lightning Extreme 6GB or ASUS Matrix in 2.0Ghz...

GPU wars really excites me, specially when its a close fight. We also get the benefits of price drops in their last-gen cards...

 

[radrok]

Can't wait to see MSI's R7970 Lightning Extreme 6GB or ASUS Matrix in 2.0Ghz...

Well, 2.0 GHz may be a little too much to ask for air/water cooling.