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    AMD releases HD 7000M - mobile 7700M/7800M/7900M series

    Discussion in 'Gaming (Software and Graphics Cards)' started by yknyong1, Mar 28, 2012.

  1. Cloudfire

    Cloudfire (Really odd person)

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    It should say 7970M. 6960 was not made which is why I think it is a typo
     
  2. yknyong1

    yknyong1 Radiance with Radeon

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    AMD HD 7960M is the ATI HD 4860M reborn. Ouch.
     
  3. Deks

    Deks Notebook Prophet

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    By 'dead' you mean what exactly?
    Performance-wise it will be left in the dust?
     
  4. long2905

    long2905 Notebook Virtuoso

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    Exactly equal....
     
  5. yknyong1

    yknyong1 Radiance with Radeon

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    Read it as "dead even".
     
  6. Kevin

    Kevin Egregious

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    Agreed, it's most likely just a typing error.
     
  7. Meaker@Sager

    Meaker@Sager Company Representative

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    No way, the 7870 trounces the GTX560ti for power efficiency. Offers around GTX580 performance at GTX560 power levels. So I would take the 580 and then the difference between the 560 desktop and 580M and thats where the 7970M will be.
     
  8. Kevin

    Kevin Egregious

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    Two dangerous assumptions:

    - It's based from the 7870
    - it's a 100W card

    I've decided to bottle my excitement until I find out both of those are true.
     
  9. Cloudfire

    Cloudfire (Really odd person)

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    So,

    7970M cannot be a 7870 since the maximum power consumption of that card is 144W. 7970M can however be the 7850 since the power consumption there is 101W right where the MXM max power is rated.

    Now looking at the performance of 7850, it is in average around 7% faster than GTX 560Ti. And since GTX 580M is around 20% (?) slower than a 560Ti, we are expecting that the 7970M is 30%-ish faster than 580M?
     
  10. aduy

    aduy Keeping it cool since 93'

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    it probably wont be a 100w card, espescially since the 6970m was inbetween 75 and 100w. the 7990m however could be a 100w card, if they want it to be.

    also keep in mind that they are pretty much required to undervolt any desktop card in order to reduce the thermal envelope due the lower cooling performance available in laptops, so the 7990m could very well be a 7870.
     
  11. Meaker@Sager

    Meaker@Sager Company Representative

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    Is the 6870 a 100W card? The GTX560ti? It's always more efficient to have all the units active at a slightly lower clock.

    They have a new chip, the 7770 desktop chip to fill the 50-75W band.
     
  12. Cloudfire

    Cloudfire (Really odd person)

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    underclocked/undervolted 7850 (101W) = 7970M (75W)
    underclocked/undervolted 7870 (144W) = 7990M (100W)
    ??

    Since they are required to undervolt the 7850 to get the 7970M and it is rated at lets say 75W, what performance should we expect compared to 580M? Sounds pretty meh to me... :confused:
     
  13. PaKii94

    PaKii94 Notebook Virtuoso

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    how much performance diff will the 7770/7750 be vs 7770m/7750m
     
  14. PaKii94

    PaKii94 Notebook Virtuoso

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  15. Meaker@Sager

    Meaker@Sager Company Representative

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    Very little as far as I can tell, they were almost designed for mobile use in mind......
     
  16. Kevin

    Kevin Egregious

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    Closer to 35%.
     
  17. Meaker@Sager

    Meaker@Sager Company Representative

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    620/750

    vs

    822/1000

    25%/33% slower.
     
  18. maxheap

    maxheap caparison horus :)

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    what 580m is 35% slower than 560Ti???

    EDIT: well, apparently you are somewhat right, about 30ish
     
  19. Kevin

    Kevin Egregious

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    If the 7970M is 75W, I'm not even interested.
     
  20. aduy

    aduy Keeping it cool since 93'

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    your 6970 is supposedly around 75 watts. ive even seen rumors that it will be anywhere from 45, 65, 75, or 100 watts. who knows?
     
  21. Cloudfire

    Cloudfire (Really odd person)

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    So continuing,
    Say the GTX 580M is lets say 25% slower than 560 Ti, and 7850 is 7% faster than 560 Ti. That puts it around 33% faster than 580M.

    Now lets think that they need to downclock the 7850 to make the 7970M out of it. So the 7850 is originally 100W, but they need to slice off 25W, to 75W to fit it on a mobile Chip. So they slice of 1/4 of the performance, ie 25%.

    Which puts the 75W 7970M around 5-10% faster than the 100W GTX 580M. If 580M is around 20% slower than 560 Ti we might see 7970M around 580M or 5% faster.

    No?

    If it is 75W you might need to wait awhile I think. 6970M and 6990M was released 6 months apart :/
     
  22. R3d

    R3d Notebook Virtuoso

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    I think you're underestimating the 7850 and overestimating the 580m. Just going by raw clock speeds there's the 580m will be at least 30% slower than the 560ti.

    And the 7850 is more than 7% faster than the 560ti, it's pretty similar to the 570 in performance.

    Also, the relationship between tdp and performance isn't linear. If you look at the 560ti vs 580m, the 560ti has a 70% higher TDP while being clocked 30% higher.
     
  23. lordbaldric

    lordbaldric Notebook Consultant

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    You are completely discounting the role of binning (cherry picking more efficient cores) in creating mobile cards. The 560ti is a 170 watt part. By your above analysis the 580M should be 40% slower than it to get the power draw down, but as you say it's onlly 20% slower. So why say the mobile version of the 7850 has to be 25% slower to lower the power draw by 25%? In reality it will probably be about 12% slower.
     
  24. Cloudfire

    Cloudfire (Really odd person)

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    OK, I was just thinking out loud. I like to do that. Nobody else like to make these forecasts and prediction in this forum so why not plunge right down on it :)
    I was just doing the easy math, 25W reduction of 100W, meant 25% in my head. And I have no idea how the 560Ti is compared to 580M which is why I wrote "lets say.." :)

    So say the 580M is 30% slower than GTX 560Ti, and 7850 is 7% faster than 560Ti (It really is R3d, check out this review), and to slice of 25W of the 7850, the 7970M will "suffer" a 12% performance reduction.

    7850 is 37% faster than 580M, AMD slice of 12% performance to fit in to the 75W TDP rating and make the 7970M.
    7970M is then around 25% faster than 580M while is 25W less than 580M.

    Amazing if true, but doesn`t that sound a bit too good to be true?
     
  25. R3d

    R3d Notebook Virtuoso

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    Your link doesn't work. And it doesn't seem that far fetched considering it's 28nm vs 40nm.
     
  26. Cloudfire

    Cloudfire (Really odd person)

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    Strange. It works here

    [​IMG]
     
  27. R3d

    R3d Notebook Virtuoso

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    Be careful with percentages. If you're using the 7870 as the baseline then to compare the 7850 to the 560ti you have to compare 80% and 87%. 87/80 = ~1.09 which means that if you were to use that chart, the 7850 would be around 9% faster.

    But that's a negligible difference from 7% so it really doesn't matter. Though another thing going for the 7970m would be a higher overclocking headroom which would probably increase the performance gap more if both GPUs were overclocked to their full (reasonable) potential.
     
  28. Cloudfire

    Cloudfire (Really odd person)

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    To put it this way: If 7970M is 75W and is 25%ish faster than 580M I will be all over that chip. :D
     
  29. nissangtr786

    nissangtr786 Notebook Deity

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    Cloudfire, you do realise nvidia kepler will easily trounce the 7000 series performance per watt. You only have to look at the gtx680 to realise this. The gt640m in notebookcheck vs 540m with ulv is similar consumption but a massive leap in performance.

    I reckon a 60w kepler card will beat a 75w amd card.
     
  30. Cloudfire

    Cloudfire (Really odd person)

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    Oh yes sir, I`m waiting for the GK106/GK104 Keplers too before making an decision. Pretty shure the 680M is going to rock :)
     
  31. yknyong1

    yknyong1 Radiance with Radeon

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    Is there even GK106? Heard of it, but no confirmation???
     
  32. TheBluePill

    TheBluePill Notebook Nobel Laureate

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  33. Kevin

    Kevin Egregious

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    Why would they bring in worse cards than what were binned for the 6900M line, for their next flagship?
     
  34. yknyong1

    yknyong1 Radiance with Radeon

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    What would become of the lower cards like the 7750M?
     
  35. maxheap

    maxheap caparison horus :)

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    7850 will become 7970m
    7870 will become 7990m

    WITH LOWER PERFORMANCE, people are assuming they will be equivalent, unfortunately not... but still they will perform handily, again 20% performance increase is something crazy nice, people are too optimistic about GCN or Kepler, mobile environment we cannot see the desktop performance increase, just please keep your hopes a little lower.. I am kinda sure this year nothing will beat 580m about +30% (if something does it, it would be wonders as MXM3.0 will be able to run MXM3.1 cards, as Clevo already confirmed)
     
  36. Botsu

    Botsu Notebook Evangelist

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    I might be wrong but I thought the Radeon 7870 was more than 20% better than a 6870 while consuming slightly less. So the improvement might be more than what you forecast, depending on AMD's choices for specification.
     
  37. Cloudfire

    Cloudfire (Really odd person)

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    GK106 is not out yet, but its the middle ground between GK104 and GK107. It is coming out in May and I think its our new GTX 570M but I have hard time putting it in the 600M series because every name is taken. What we might be seeing actually is 680M being a GK106 and GTX 685M being a GK104. Just like GTX 480M was a GF100 and 485M a GF104.
    Cheaper NVIDIA GeForce 600 cards coming with GK107 and GK106

    After all the GK106 is the direct competitor to 7870 (they predict). So what might happen is our GTX 680M performing like the 7990M... ;)
    Google Translate

    Another forecast brought to you by Cloudfire :)
     
  38. Eldaren

    Eldaren Notebook Evangelist

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    Yes, but if the 7970m is based off the 7870, it will be downclocked a decent amount.
     
  39. Cloudfire

    Cloudfire (Really odd person)

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    Not if they plan on keeping the 7970M at 75W. They must then reduce the power consumption by almost 50% to get down to that level. Seems a bit odd instead of reducing the 7850 instead which is a 100W.
    7970M could be 7870 if the plan on building a 100W GPU but what about the 7990M then?

    BTW, this guy (I think its a reseller) says that the 7970M will be around GTX 675M.
    Google Oversetter
     
  40. Botsu

    Botsu Notebook Evangelist

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    That GK 106 doesn't look too good by the way. Same size as Pitcairn, but half the core count of the GK 104, half the texture units...

    Ofc Pitcairn does not equal its big brother either but part of the reason why it performs so well is because it has a great balance that Tahiti lacks. And at all events it's SP count if more than half that of Tahiti (Pitcairn XT at least).
    Also the GK 104 is a pretty balanced chip to begin with, so I can only imagine that every bits you cut off to get to the GK 106 specs will hurt performance quite severely.

    I can only see another reason for nvidia to go with GK 104 as their top mobile GPU if they want to compete.
     
  41. Ernestds

    Ernestds Notebook Enthusiast

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    Both Pitcairn and Cape Verde are significantly better at perf/watt than Kepler. Kepler is only better than Taihti, and even then, not by much.

    nVidia only reduced the gap, which was expected, since not only Fermi was very inefficient, but they reduced significantly their compute baggage, all the while AMD dedicated more space and time to it.
     
  42. R3d

    R3d Notebook Virtuoso

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    You realize that you're comparing an architecture to a specific card, right? That's like me saying that an Intel i3-2100 is more efficient than Ivy Bridge... Doesn't make any sense.

    Since the GTX 680 (GK104) is the only Kepler card that has been extensively reviewed, there's no way to tell how well Kepler scales into the mid and low performance range. But since GK104 has better perf/watt than Tahiti XT, presumably lower end Kepler cards (e.g. GK107) will have better perf/watt than their GCN counterparts.
     
  43. Meaker@Sager

    Meaker@Sager Company Representative

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    *Takes a calming sigh*

    We can assume higher performance in the mobile space because neither card from AMD or Nvidia is consuming much if any more power than their last high end series (in fact its mostly less) and yet they are giving much better performance.

    This year the 580M is going to get smashed, well and truly. The 7870 is at LEAST 30% faster at worst and uses less power than the 560ti.
     
  44. Cloudfire

    Cloudfire (Really odd person)

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    Yeah, 580M and 6990M is replaced this year. Not saying that they isn`t good for a year more or two though :)
     
  45. Kevin

    Kevin Egregious

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    Well, you know how people can get when the top-end GPU equipped machine they spent a decent chunk of $$$ on less than a year ago is about to be easily trounced by a new tech arch.

    Anyone remember how uncomfortable Geforce Go 7950 GTX users got when the 8700M GT and 8800M GTX came around?
     
  46. maxheap

    maxheap caparison horus :)

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    guys, I don't understand why everybody is so angry? a few people working in nvidia or something? I am just saying it won't happen (my perspective, because I understand from corporate point of view, and if somebody rebadges a previous product, they do it because they have serious R/D problems..) and when it comes we will see (I can bet some real money about this at least 30% claim), and not for the anger, just for fun, because trust me I am buying 680m before anyone of you guys, hardware greed, you cannot help it :D also dude (@Kevin), you are missing my spot by 2-3 months, I wouldn't be talking about your point ;)
     
  47. Kevin

    Kevin Egregious

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    No one seems angry or upset to me.

    We disagree on how large the performance gap will be, but since no jobs or lives are on the line, I just take it as fun times with educated speculation. We'll see who is right in the end, with no hard feelings.
     
  48. nissangtr786

    nissangtr786 Notebook Deity

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    This year the 580M is going to get smashed, well and truly. The 7870 is at LEAST 30% faster at worst and uses less power than the 560ti.
    __________________
    Nvidia easily will win this time. Its like the ati 5000 series vs nvidia gt400 series were ati/amd easily won in terms of performance per watt but this time nvidia has easily won this round in terms of discrete graphics.

    AMD will look to make up sales with apu's to bridge the gap but ivy bridge is so powerful that may not even work.

    I thought amd did okay but nvidia are way ahead and doing the performance per watt figures I thought at best were possible. I don't see how amd are going to compete in the top end market this year but at least they have there apu's which is also under threat.
     
  49. maxheap

    maxheap caparison horus :)

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    dude, you are the one with hard feelings, don't get smart on me...

    yes, we will see.
     
  50. yknyong1

    yknyong1 Radiance with Radeon

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    Total bunch of jokers! :D

    GK110 and GK104 will make an appearance as the 700M series.

    Heard it here first.

     
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