AMD: Radeon HD 7790 to be 10% slower than 7850, 7990 prototype "ready"

By Rick
Mar 12, 2013
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  1. It's no surprise AMD plans to fill the ill-strategized void left somewhere between its Radeon HD 7700 and 7850 offerings -- a space where Nvidia's GTX 650 Ti is likely getting comfortable. According to hardware.info though, at a recent CeBIT conference...

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  2. JC713

    JC713 TechSpot Evangelist Posts: 6,692   +871

    The 7990 better be good. It needs to kill the 690 or it will be a bust. I wonder if the rumor of a single GPU 7990 is true.
  3. JC713

    JC713 TechSpot Evangelist Posts: 6,692   +871

    175 bucks just because it uses the 22nm process which isnt even fully ironed out... I would rather get more horse power from the 7850 for 30 bucks less.
  4. St1ckM4n

    St1ckM4n TechSpot Evangelist Posts: 3,385   +607

    7990 will have to be clocked higher than non-GHz 7970's to be competitive with GTX690 and Titan. And, even more competitive on price, since there is a single-GPU solution available already..

    UNKNOWN9122: Single-GPU solution would be interesting.. I don't think AMD has that though, otherwise there would be no need for GHz edition.
  5. soldier1969

    soldier1969 TechSpot Booster Posts: 244   +43

    Poor man's card. GTX TITAN 6GB FTW. I game at 2560 x 1600 max settings.
  6. IMHO the 7770 was a gimped up chip
    All the other 28nm GCN chips are 256 shaders apart
    7970 = 2048
    7950 = 1792
    7870XT = 1536
    7870 = 1280
    7850 = 1024
    7770 = 640 (384 less than 7850, only 128 more than 7750)
    7750 = 512

    They should have made the 7770 at 768 shaders to begin with, that would have prevented a performance gap to from in the first place.

    As it is the 7790 can cannibalize the 7850 [and even the 7770] if it is priced too low but fail to be a success if priced too high, leaving AMD little wiggle room.
  7. hahahanoobs

    hahahanoobs TechSpot Booster Posts: 941   +94

  8. JC713

    JC713 TechSpot Evangelist Posts: 6,692   +871

    No... it will be the same price, maybe 100 bucks less to stay competitive as stickman said
  9. dividebyzero

    dividebyzero trainee n00b Posts: 4,783   +639

    The 7990 already is the fastest card in general terms- it just isn't an official reference model ( TUL -PowerColor's parent company, makes the PowerColor, VTX3D and Club3D versions), so isn't included in ongoing benchmark reviews. Unfortunately it is also triple slot, sucks power like the fat kid at the smorgasboard, and has decidedly non-spec/non-OEM friendly 3 x 8-pin power connection requirement. The added advantage is that the new card would have purposed AMD engineered drivers (that is a plus, right?)
    Nope.
    2 x Tahiti GPUs.
    GPU design is generally 3-4 years in the making before it sees the light of day, so you don't cook up a new architecture overnight...especially on the same process node (Nvidia's Kepler design for instance was started seven years ago)
    Already $100 cheaper than the 690. The 7990 isn't a direct competitor to the Titan, mainly because the 7990 is a 2 or 4 GPU solution (Crossfire or quad). If you're looking at benchmarking then four Titans will smoke two 7990's. The only other likely area of direct competition would be compute- but each architecture has its own benefits, so absolute performance generally would play second fiddle to the software workload required.
    UNKNOWN9122 likes this.
  10. ghasmanjr

    ghasmanjr TechSpot Booster Posts: 363   +86

    I'm getting an odd vision. It's where the 7990 will be clocked poorly and the 690 will tear it apart. A month later, AMD will release a GHz edition of the card that will actually beat the 690, but will cost $100 more than the standard 7990.
    UNKNOWN9122 likes this.
  11. Chazz

    Chazz TechSpot Enthusiast Posts: 623   +56

    And the entire debate would be that the GHZ edition isn't a real card, it's what AMD should've initially released, ignoring the fact that even with the price increase you would get better performance at times and for the same, or lower price than the competition depending on OEM.
    ghasmanjr likes this.
     
  12. Tanstar

    Tanstar TechSpot Enthusiast Posts: 195   +18

    Your link to a 7850 takes you to the Google Shopping results for a 7850, but all the cards linked to it are 7770s. Fail.
  13. JC713

    JC713 TechSpot Evangelist Posts: 6,692   +871

    Google shopping is garbage, I stopped using it a while ago, Amazon is better for comparing in my opinion
  14. JC713

    JC713 TechSpot Evangelist Posts: 6,692   +871

    well yeah, I just hope AMDs decision to not get first grabs by delaying 22NM till Q4 is a good idea. Hopefully it will be more developed than the 700 series. AMD needs to bounce back to survive


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