Radeon HD 4750 40nm RV740 tested [Guru3D]

Discussion in 'Frontpage news' started by Guru3D News, Feb 25, 2009.

  1. evolucion888

    evolucion888 Master Guru

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    I don't see how the HD 4750 could outperform the HD 4850, it can get very close once it's overclocked, but remember that the HD 4850 has full 800 stream processors, in theorical raw power, the HD 4750 will have to run at 785Mhz core to make it up with the stream processors deficit, but you can also overclock the HD 4850 and get higher performance. In the end what ATi wants is to offer the performance of a $150.00 videocard for less than $100.00. Looks like X800XL/X1950PRO all over again, low price, new manufacturing process and most of the performance of their high end brothers..., after all most of the sales are in the midrange and low end market.
     
  2. cowie

    cowie Ancient Guru

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    it would not make a differance these cards are hardly going to bottleneck any cpu.
    you should be able to ring thses puppies out no matter what rig
     
  3. Aura89

    Aura89 Ancient Guru

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    the only thing i meant by that was theoretically the "4750" should be able to overclock a lot more then a 4850 should, since it's 40nm, but only time will tell, and from what i saw, this card was inbetween a 4830 and a 4850, so for instance, and these numbers are just 100% random numbers don't think anything of it, but if a 4850 can OC 10%, well that's good, but if the "4750" can OC 25~%, because of it being on 40nm, then, again, "theoretically" it should out perform the 4850 even if the 4850 is OC'd

    Again these are just theoretical things, no facts here other then a 4850 is 55nm and a "4750" is 40nm, and only time will tell how well they will overclock
     
  4. Aura89

    Aura89 Ancient Guru

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    again, there won't be any difference, since they are all done on the same computer it's showing the same difference between the cards and that's all that matters, aka "this card is this much better then this card" or "this card is this much worse then this card", i think you forget that unless the graphics card is being bottlenecked, then the only thing 99% of the time that'll matter in a game is the GPU, so it doesn't matter

    and coming into these forums and screaming at people isn't a very good start
     

  5. flyboy27

    flyboy27 New Member

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    New high end?

    I hope Hilbert gets a RV790 preview card!
     
  6. SolidMGSnake

    SolidMGSnake Member

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    So I guess buying a HD4670 would be kinda pointless unless u had a 300watt psu.
     
  7. Stukov

    Stukov Ancient Guru

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    don't know the power req yet.
     
  8. pedrofdmp

    pedrofdmp New Member

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  9. cowie

    cowie Ancient Guru

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    nv's got overclocked 98gt's for less then 99 bucks anyways
    plus they have power plugless 98gt's too.
     
  10. pedrofdmp

    pedrofdmp New Member

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    yeah, but nvidia is so not cool, no open source drivers or specs like everyone else is doing. all the fiascos don't help either 8400/8600, nforce2/vista, very hard to get the correct drivers for older cards...

    i'm planning to get a new gpu, but nvidia is not on my list. not even recommending it to anyone who asks me nowadays ...
     

  11. weston

    weston Ancient Guru

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    this is a little faster than the 9800gt though, and quite a bit in some games. I'm missing where being the same price but slower is somehow good for the 9800 i guess
     
  12. cowie

    cowie Ancient Guru

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  13. XanderF

    XanderF Member Guru

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    Yeah, that's what kills me on this article.

    Great overview, but I'm dying to know the power consumption on this. Especially now that we have some single-slot 4830s hitting the market.

    So...yeah, this card basically ties up a 4830 when it doesn't beat it in performance. That's great unless it also consumes more power. The die shrink SHOULD help, but word I've heard is that the 40nm process is 'very leaky', which is why the reference HSF is dual-slot and the card still requires an external power adapter. (Heck, the reference cooler on the HD 4850 wasn't even dual-slot!)

    Performance is one thing (and this article nailed that fairly well), but heat and power are also pretty big concerns.
     
  14. pedrofdmp

    pedrofdmp New Member

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    My local pc shop is taking pre-orders for this card. They say they will have stock before the end of this month.

    Can we have power consumption and overclock numbers now ? :sleep2:
     
  15. Jonp382

    Jonp382 Master Guru

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    According to AMD slides, the card will draw 80 watts. It will require a power connector on the 4770 and according to Fudzilla the 4750(to stay on the safe side).
     

  16. pedrofdmp

    pedrofdmp New Member

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    80w load, what about idle ?

    most gddr5 is rated at 4000, can we reach that or above with this card or does it have voltage limitations?

    there is still a lot of stuff to know...
     
    Last edited: Apr 21, 2009
  17. MAD-OGRE

    MAD-OGRE Ancient Guru

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  18. pedrofdmp

    pedrofdmp New Member

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  19. Jonp382

    Jonp382 Master Guru

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    Expreview has a Vantage benchmark up, 3-4% slower than the 4850. They've apparently got a full review incoming.
     
  20. pedrofdmp

    pedrofdmp New Member

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