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AMD 40nm RV740 with GDDR5 Coming

AMD could have a monster midrange card on the horizon. According to sources, RV740 may be a 40nm process shrink of RV770LE - the currently available HD 4830.

Sources received information claiming that RV740 will have 640 stream processors, 32 texture units and 16 render back-ends, just like the HD4830.

On the memory side, things have changed. The memory is expected to be 900MHz GDDR5 (3600MHz effective) for the highest-end card using the RV740 GPU, utilizing a 128-bit memory interface instead of a 256-bit interface running at 900MHz GDDR3 (1800Mhz effective).

Power consumption will be significantly lower than that of RV770LE due to the 40nm process. At the same time, performance should be slightly higher than the HD4830, but not quite up to the level of the HD4850.

Sources indicate that the price of the card will be under $100 (USD).

GPURV740RV770LE
Model NameTBDRadeon HD 4830
Process40nm55nm
Stream Processors640640
Core ClockTBD575MHz
Memory Clock (Effective)900MHz (3600MHz)900MHz (1800MHz)
Frame Buffer512MB GDDR5512MB GDDR3
Memory Interface128-bit256-bit
Memory Bandwidth57.6 GB/sec.57.6 GB/sec.
Texture Units32 TMUs32 TMUs
Render Back-Ends1616
TDPTBD110W
  • gwolfman
    What sucks is the 128-bit memory interface. They should have kept it 256-bit and I'd buy it.
    Reply
  • JonnyDough
    I was thinking of buying a 4670...I guess I'll wait.
    Reply
  • JonnyDough
    gwolfmanWhat sucks is the 128-bit memory interface. They should have kept it 256-bit and I'd buy it.
    What if it makes little difference? Doesn't the process shrink mean that the GPU aligns with more bus lanes? I was thinking it does...

    I know GDRR5 is faster than GDDR3, but does it lower the card's required power too?
    Reply
  • Rahbot
    Ok why dont they also make a GPU with like 3 or 4 Video Cards in one like a 4850 X4 that would be great. I also would like to See nvidia do that maybe then Nvidia would beat ATI.
    Reply
  • Nintendork
    gwolfman

    You don't know what you're talking about.

    900 --> 1800Mhz GDDR3 * 256bit / 8 = 57.6GB/s
    900 --> 3600Mhz GDDR5 * 128bit / 8 = 57,6GB/s

    bits are bit everything in this world.

    Using 128bit they cut a hell of space than using 256. Also GDDR5 utilize less voltaje so that reduce consumption a give the same bw as having GDDR3.

    Kudos for AMD/Ati, I'm going for this baby. Please, call it HD5670.
    Reply
  • enewmen
    Teh 40nm process is coming a LOT sooner than I expected and the video card wars are more bloody than I thought.
    Reply
  • kelfen
    well well, is this article suposed to be ATI not AMD?
    anyways 40mn wootz glimse of how competitive next gen cards are going to be. This just might be a small test card for 40mn process but wootz
    Reply
  • randomizer
    kelfenwell well, is this article suposed to be ATI not AMD? anyways 40mn wootz glimse of how competitive next gen cards are going to be. This just might be a small test card for 40mn process but wootzAMD owns ATI so...
    Reply
  • gsteacy
    Sorry, bandwidth was meant to be included in the table. It's been added.
    Reply
  • LAN_deRf_HA
    I'm not sure because of the GDDR5, but this card might be profitable for AMD at the same pricing as the 4670. Now that would be one hell of price performance ratio.
    Reply