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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!

  • viridiancrystal
    Hoping for very low power cards here, and a nice boost over the 6800's
    Reply
  • 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.
    Reply
  • esrever
    Can't wait for the reviews!
    Reply
  • Wave Fusion
    Here's to hoping some better CPUs follow suit sometime soon.

    It's a very wide gap between mobile and desktop GPUs, but my i7-2820QM literally is a locked, downclocked 2600k. It's hard to justify rolling a desktop when anything less than said 2600k feels like a lateral move.

    Don't make me buy the same chip twice. Release a new CPU or let me extract my notebook CPU, throw it into a desktop, and even out the clock difference.
    Reply
  • __-_-_-__
    7850 2Gb will definitely be my next gxf.
    Reply
  • tomfreak
    Where is the realistic leak of Kepler when u NEED IT.
    Reply
  • neiroatopelcc
    I find this news piece is written in an odd variation of english. It's not misspelled like Kevin's usual stuff, but it sort of sounds like a google translate or something.
    Reply
  • confish21
    Ok, Ive been waiting to bring this up... Anyone else use google translate to check out expreview.
    Reply
  • pixelpojken
    So, any guestimations on the relative perforcmance of 7890 vs 7950? I'd appreciate an opinion.
    Reply
  • neiroatopelcc
    confish21Ok, Ive been waiting to bring this up... Anyone else use google translate to check out expreview.I've stopped using it at all. The other day I wanted to translate a cake from danish to german. The end product according to google was 'green poison kuchen' - so only a third of the words were even german at the end of the day.
    Reply