AMD Radeon HD 7800 Series Specs Revealed in Leak

As reported first of February in a leaked roadmap, AMD is set to release its HD 7800 series graphics cards based on Pitcairn in March. Based on information coming out of Chinese-based EXPreview.com, we may have our first glimpse at the specifications for the new Pitcairn series. The HD 7800 series will utilize AMD's GCN stream processors seen with both HD 7900 and HD 7700 series.

Radeon HD 7850

  • 20 Graphics CoreNext Compute Units
  • 1280 stream processors
  • 80 TMUs
  • 24 ROPs
  • Memory Bus of 256-bit
  • Memory size of 1 GB/2GB GDDR5 memory
  • Clock speeds of 900 MHz core
  • Memory frequency of 1250 MHz (5.00 GHz effective)

 

Radeon HD 7870

  • 22 Graphics CoreNext Compute Units
  • 1408 stream processors
  • 88 TMUs
  • 24 ROPs
  • Memory bus of 256-bit
  • Memory size of 2GB GDDR5 memory
  • Clock speeds of 950 MHz core
  • Memory frequency of 1375 MHz (5.50 GHz effective)

  

Early pricing for the HD 7850 has it listed at around $220 dollars and the HD 7870 around $300 dollars. In the second quarter, AMD is expected to release both the HD 7990 and HD 7890. While the specs for HD 7990 are still relatively unknown, the HD 7890 will be based on Tahiti (same as the HD 7900 series). It is expected to feature 24 Graphics CoreNext Compute Units, 1536 stream processors, 96 TMUs, 32 ROPs, and have a 1.5 GB memory with memory interface of 384-bit. Early expectations for pricing has the price of the HD 7890 around $359 dollars.

Please keep in mind, of course, that these specifications are from EXPreview's supposedly reliable source. We won't know for sure until AMD shows its hand. Stay tuned!

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  • ikefu
    I don't think Physx is the selling point it once was. Its a very specific library that was useful when general GPU Compute architectures were unavailable. But now that AMD is jumping in whole hog with GCN to match NVIDIA, I foresee physics based computations moving away from Physx to use general GPU compute libraries. General GPU compute is the best path because it will support the greatest number of cards and therefore the most customers as well.

    Its only a matter of time before Physx dies in favor of general GPU computer libraries.
    19
  • OSU Cowboy
    Was in the process of picking up a 6850...actually had it ordered but cancelled in the hopes I can hold off and grab a 7850. Everyone agree that it would be worth the wait?
    13
  • jrharbort
    This is really excellent pricing if the rumors are true, since these cards will be very similar to the 6950 and 6970 in performance (ATI has been a bit modest with their transition charts from what I've seen). Those cards can be found for around $240 and $350 respectively. Oh, and don't don't forget about the much lower power usage and thermals. ;)

    The 28nm gen is certainly shaping up to be an interesting one.
    11
  • Other Comments
  • viridiancrystal
    Hoping for very low power cards here, and a nice boost over the 6800's
    10
  • jrharbort
    This is really excellent pricing if the rumors are true, since these cards will be very similar to the 6950 and 6970 in performance (ATI has been a bit modest with their transition charts from what I've seen). Those cards can be found for around $240 and $350 respectively. Oh, and don't don't forget about the much lower power usage and thermals. ;)

    The 28nm gen is certainly shaping up to be an interesting one.
    11
  • esrever
    Can't wait for the reviews!
    10