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AMD 40nm RV740 with GDDR5 Coming

By - Source: Tom's Hardware US | B 36 comments

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).

GPU
RV740
RV770LE
Model Name
TBD
Radeon HD 4830
Process
40nm
55nm
Stream Processors
640
640
Core Clock
TBD
575MHz
Memory Clock (Effective)
900MHz (3600MHz)
900MHz (1800MHz)
Frame Buffer
512MB GDDR5
512MB GDDR3
Memory Interface
128-bit
256-bit
Memory Bandwidth
57.6 GB/sec.
57.6 GB/sec.
Texture Units32 TMUs32 TMUs
Render Back-Ends1616
TDPTBD110W
Discuss
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Top Comments
  • 12 Hide
    Nintendork , December 22, 2008 8:55 PM
    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.
Other Comments
  • -2 Hide
    gwolfman , December 22, 2008 7:44 PM
    What sucks is the 128-bit memory interface. They should have kept it 256-bit and I'd buy it.
  • 4 Hide
    JonnyDough , December 22, 2008 7:50 PM
    I was thinking of buying a 4670...I guess I'll wait.
  • 4 Hide
    JonnyDough , December 22, 2008 7:54 PM
    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?
  • -8 Hide
    Rahbot , December 22, 2008 8:21 PM
    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.
  • 12 Hide
    Nintendork , December 22, 2008 8:55 PM
    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.
  • -4 Hide
    enewmen , December 22, 2008 10:14 PM
    Teh 40nm process is coming a LOT sooner than I expected and the video card wars are more bloody than I thought.
  • -6 Hide
    kelfen , December 22, 2008 11:57 PM
    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
  • 6 Hide
    randomizer , December 23, 2008 12:09 AM
    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 wootz

    AMD owns ATI so...
  • 3 Hide
    gsteacy , December 23, 2008 12:15 AM
    Sorry, bandwidth was meant to be included in the table. It's been added.
  • 2 Hide
    LAN_deRf_HA , December 23, 2008 12:55 AM
    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.
  • 1 Hide
    el_alienx , December 23, 2008 1:10 AM
    So GDDR5 is ready to be commonplace? (cheap enough) to create a mid/mid-low (for the time will be released) range video card?
  • 4 Hide
    kelfen , December 23, 2008 2:42 AM
    el_alienxSo GDDR5 is ready to be commonplace? (cheap enough) to create a mid/mid-low (for the time will be released) range video card?

    well since they are doing a die shrink it becomes cheaper to produce
  • 1 Hide
    WheelsOfConfusion , December 23, 2008 3:05 AM
    So it's going to be cheap, relatively powerful, probably run cooler and draw less watts?
    Sign me up.
  • 1 Hide
    zodiacfml , December 23, 2008 3:06 AM
    nice, probably this will only require power on the PCI-E slot alone.
    good thing i haven't bought any card yet as long price on this new one is near 9800GT current price.
  • 1 Hide
    that_aznpride101 , December 23, 2008 3:18 AM
    is this card really going to be less than $100? hmm...
  • 3 Hide
    randomizer , December 23, 2008 3:22 AM
    that_aznpride101is this card really going to be less than $100? hmm...

    Well if it is then NVIDIA has some serious problems on their plate. Nothing is in concrete yet though.
  • 2 Hide
    kelfen , December 23, 2008 4:54 AM
    randomizerWell if it is then NVIDIA has some serious problems on their plate. Nothing is in concrete yet though.

    it would make sense since the biggest plus to ATI is price/performance which they made big with 4xxx series
  • -2 Hide
    vider , December 23, 2008 5:31 AM
    zodiacfmlnice, probably this will only require power on the PCI-E slot alone.good thing i haven't bought any card yet as long price on this new one is near 9800GT current price.


    If this one comes close to my HD3870 and is only powered by the PCI-E slot than I'm definitely buying it! Keep it up AMD!
  • 3 Hide
    doomsdaydave11 , December 23, 2008 5:35 AM
    gwolfmanWhat sucks is the 128-bit memory interface. They should have kept it 256-bit and I'd buy it.


    The GDDR5 memory should offer more then enough bandwidth. I wouldn't worry about it.

    If this card is priced in the $100 range, then NVIDIA just lost the war.
  • -1 Hide
    Anonymous , December 23, 2008 9:32 AM
    Again.
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