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AMD Radeon HD 7970: Promising Performance, Paper-Launched

Benchmark Results: Overclocking

AMD representatives were quite confident about the Radeon HD 7970’s overclocking headroom. They went so far to say that most cores will make it over 1 GHz, that many will get past 1.1 GHz, and that some will even slam right into 1.2 GHz. Moreover, they claimed that the stock 1375 MHz GDDR5 memory could make it to 1625 MHz or higher.

We were happy to perform the tests needed to validate AMD’s claims. Unfortunately, the card’s stock BIOS is more of a prude than the company’s representatives. Its software-based Overdrive tool won’t push any higher than 1125 MHz on the core and 1575 MHz memory. Compared to the stock 925 MHz core and 1375 MHz memory settings, though, those are respectable ceilings for a consumer card. Of course, board partners will be able to customize the overclocking limits of their own offerings, and if the Radeon HD 7970 has the overclocking headroom that AMD says it does, we’d hope to see factory-overclocked cards with nice boosts.

With all of that said, we increased PowerTune’s slider by the maximum 20% setting and shot for the moon. The result on this undoubtedly hand-picked sample was the top available frequencies. Will your card be chosen for its headroom? Probably not. Can we guarantee you’ll see a similar overclock? Unfortunately not.

How does that frequency jump translate into performance? We’ll show you:

  • thepieguy
    If Santa is real, there will be one of these under my Christmas tree in a few more days.
    Reply
  • a4mula
    From a gaming standpoint I fail to see where this card finds a home. For 1920x1080 pretty much any card will work, meanwhile at Eyefinity resolutions it's obvious that a single gpu still isn't viable. Perhaps this will be something that people would consider over 2x 6950, but that isn't exactly an ideal setup either. While much of the article was over my head from a technical standpoint, I hope the 7 series addresses microstuttering in crossfire. If so than perhaps 2x 7950 (Assuming a 449$) becomes a viable alternative to 3x 6950 2GB. I was really hoping we'd see the 7970 in at 449, with the 7950 in at 349. Right now I'm failing to see the value in this card.
    Reply
  • mi1ez
    Damn, that's a good looking GPU!
    Reply
  • cangelini
    a4mulaFrom a gaming standpoint I fail to see where this card finds a home. For 1920x1080 pretty much any card will work, meanwhile at Eyefinity resolutions it's obvious that a single gpu still isn't viable. Perhaps this will be something that people would consider over 2x 6950, but that isn't exactly an ideal setup either. While much of the article was over my head from a technical standpoint, I hope the 7 series addresses microstuttering in crossfire. If so than perhaps 2x 7950 (Assuming a 449$) becomes a viable alternative to 3x 6950 2GB. I was really hoping we'd see the 7970 in at 449, with the 7950 in at 349. Right now I'm failing to see the value in this card.
    I'll be trolling Newegg for the next couple weeks on the off-chance they pop up before the 9th. A couple in CrossFire could be pretty phenomenal, but it remains to be seen if they maintain the 6900-series scalability.
    Reply
  • cangelini
    thepieguyIf Santa is real, there will be one of these under my Christmas tree in a few more days.
    Hate to break it to you, but there won't be, unless you celebrate Christmas in mid-January.

    Start treating your SO super-nice and ask for one for Valentine's Day!
    Reply
  • Darkerson
    Well I know what I want at tax time :D
    Reply
  • danraies
    cangeliniStart treating your SO super-nice and ask for one for Valentine's Day!
    If I ever find someone that will buy me a $500 graphics card for Valentine's Day I'll be proposing on the spot.
    Reply
  • a4mula
    cangeliniI'll be trolling Newegg for the next couple weeks on the off-chance they pop up before the 9th. A couple in CrossFire could be pretty phenomenal, but it remains to be seen if they maintain the 6900-series scalability.
    While I have little doubt that 2x of these cards would be very impressive, so would the $1100+ pricetag. I guess coming from the 580 SLI standpoint it might not seem like much, but if you've been considering the $750 ($900 for mobo+psu difference) 3x 6950 route like myself it seems like a major jump.

    Of course this is all just initial reaction towards the earliest of benchmarks. Given awhile to really dig around the new 7xxx, while allowing it to mature from a driver standpoint might make the 3x6950 seem foolhardy.
    Reply
  • Zombeeslayer143
    WOW!!! I love the conslusion; all of it, which basically is interpretted as "I'm biased towards Nvidia," and trys to say don't buy this card! Has the nerve to mention Kepler as an alternative; right, Kepler, as in 1 year away. The GTX580 just got "Radeon-ed" in it's rear. I'm not biased towards either manufacturer, just love to see and give credit to a team of people with passion, vision, and hardwork come together and put their company back on the map, as is shown here today with AMD's launch of the 7970. It's AMD's version of "Tebow Time!!"
    Reply
  • Zombeeslayer143
    No hard feelings to the author...thanks for the review nonethless..
    Reply