Saphire HD6970 0r HD 7950 for PCI Express 2.1 ?

Discussion in 'Videocards - AMD Radeon' started by Edde, Mar 14, 2012.

  1. Edde

    Edde Active Member

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    Hello everyone. I'm new here. Please, I would like to ask something I'm not sure. I'm going to build a new computer That will work in PCI Express 2.1.
    ( In my country I don't have MOBO in PCI express 3.0.)

    I will use:

    MOBO i7 1366 INTEL DX58SO
    Core i7 i7 875K 2.93GHz 8MB
    Memory Kingston HiperX DDR3 1600MHZ ( 8Giga or 16Giga)
    Power supply: CORSAIR 820Watts professional series.

    So...How it will work in PCI Express 2.1, Which of These Video cards Could I get the best performance working in PCI Express 2.1?
    saphire HD6970 PCI Express 2.1, saphire HD7950 PCI Express 3.0 or saphire hd7970 PCI Express 3.0?

    Saphire 6970 still better for working in 2.1?

    I Know That the HD7950 videocards or hD7090 only have the maximum performace in PCI Express 3.0. But my system will work in PCI Express2.1 with windows 7.

    So, I will have better results with HD7000 series in my sytem? Or the HD6970 Will give me the same performace since it works in 2.1?

    Thank you in advance,

    Edde
     
    Last edited: Mar 14, 2012
  2. Desi26

    Desi26 Member Guru

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    Sapphire Radeon 7950 OC
    I went from a oc'd 6970 to a Sapphire 7950, and have noticed HUGE gains in everything I would play including BF3, Skyrim, Metro 2033 etc. Im talking 15-30 fps difference!

    You definitely do not need PCI-E 3.0 to get these benefits (Im using a 2.1 slot on a OLD motherboard), nor do I think a 3.0 board would show much improvement over 2.1.

    Just look at the guru3d front page and you will find reviews comparing cards, and the performance difference between them.

    A 7950 is comparable to a Nvidia GTX 580, and surpasses it in many tests. The GTX 580 stomps all over the 6970 any day. This should give you an indication of how good the new Radeon cards are.

    Good luck!
     
  3. Edde

    Edde Active Member

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    Hello, Desi26, thank you so much for your reply.

    But are you 100% sure about it? I am 3D graphic designer and I work with big files. I work with 3D programs ( lots of Poligons.)

    SO, I will get a better performace using an AMD HD 7950 in PCI Express 2.1 than using An AMD HD 6970? (check here http://www.clubedohardware.com.br/artigos/520 )

    And what do you think about the HD7970? It is too much expensive for the performace? Better get the HD7950 than the HD 7970 ( performace X Price) ?

    THank you a
     
    Last edited: Mar 14, 2012
  4. ---TK---

    ---TK--- Ancient Guru

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    7950 no doubt. It will oc much higher than the previous gen. does that m/b support cpu overclocking? if yes I recommend it
     

  5. Edde

    Edde Active Member

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    TK, thank you for your reply.
    Remember the HD 7950 works in 3.0 and My system will work in PCI 2.1.

    even losing data traffic between the motherboard and video card, I'll have a better performace using the HD 7950 in pci express 2.1 than the hd 6970 ??

    THank you again
     
  6. ---TK---

    ---TK--- Ancient Guru

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    current hardware has very little difference pci e 2.1 vs pci e 3.0 it includes the 7950/70
     
  7. Edde

    Edde Active Member

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    GPU:
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    And what do you think about the HD7970? It is too much expensive for the performace? Better get the HD7950 than the HD 7970 ( performace X Price) ?
     
  8. Desi26

    Desi26 Member Guru

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    GPU:
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    Just look at the specs between both cards and you can easily see the differences.

    http://www.hwcompare.com/11465/radeon-hd-6970-vs-radeon-hd-7950/

    Radeon 6970:
    2 GB GDDR5
    256 bit
    96 Texture units
    1536 SPU (Stream Processing Units)

    Radeon 7950:
    3 GB GDDR5
    384 bit
    1792 SPU's
    112 Texture units

    Not only MUCH faster, It runs MUCH cooler, and uses less power.......convinced yet?
     
  9. Desi26

    Desi26 Member Guru

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    Just get a over clocked version of the 7950 and would be very close in comparison to a stock 7970, and you would spend $100 less.
     
  10. Edde

    Edde Active Member

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    Desi26, thank you again.

    but these results that you showed me. Both are working on PCI express 2.1?
     

  11. Desi26

    Desi26 Member Guru

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    YES!

    Just because it running on a 2.1 PCI-E express lane, it doesn't change the hardware of the video card. 99% of the people who own a Radeon 7970 or 7950 is using it on a 2.1 slot. They would all tell you the same thing.

    From my experience and others I have read, using a 2.1 slot I have seen over a 25% increase in performance across the board, even more in some cases.
     
  12. BlackZero

    BlackZero Ancient Guru

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    So did you own a 6970 OC or a 570 SC before this?? in this you say you owned a 6970 OC and in anotehr thread (and sig) it's 570 SC.. which one is it?

    http://forums.guru3d.com/showthread.php?t=359698
     
  13. Desi26

    Desi26 Member Guru

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    I have owned all 3 video cards. Was using a 6970 OC, sold it for a 570 SC, Sold my 570 SC and bought a 7950.
     
  14. Desi26

    Desi26 Member Guru

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    Plus my sig is old and I have all new hardware, lol.

    I change PC parts like I do clothes
     
  15. ---TK---

    ---TK--- Ancient Guru

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    p67 m/b have been out 14months hope you change clothes more often than that man. lol
     

  16. Desi26

    Desi26 Member Guru

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    I was actually thinking that after I submitted, haha.
     
  17. Edde

    Edde Active Member

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    GPU:
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    Thank you for all. I going to buy the HD 7950 ! Woot Woot! :)

    Now I have other question, OMG.
    I checked the mother board I have choosed ( 3 channel memory) is not compatible with the processor. OMG!!

    I have read for intel i7 2600k I´ll need the mobo intel DZ68ZV , but the mobo not works in 3 channel with the memories. ; ...(
    Even with this problem, is a good buy?

    I tought in buy a mobo MB LGA2011 Intel Extreme Series DX79TO - Box ( 4 channels memory)
    But I think is very expensive the LGA 2011 processors.

    http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dz68zv.html
     
    Last edited: Mar 15, 2012
  18. sykozis

    sykozis Ancient Guru

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    Maybe he needs to slow down on the hardware changes instead?

    If he's changing hardware like he changes clothes, assuming that he changes clothes on a regular basis like most normal people, he'd be changing hardware very frequently.
     
  19. bobkn

    bobkn Active Member

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    A brief note about the utility of PCI-E 3:

    http://www.anandtech.com/show/5264/sandy-bridge-e-x79-pcie-30-it-works

    (Some gain with a 7970, but only for GPU computations.)

    The I7-2600k/Z68 combination only supports dual channel RAM, but the performance is better than for an X58 board, which makes up for some of the difference.

    Socket 2011 CPUs are expensive, except for the I7-3820:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16819115229

    It's a quad-core CPU (with Hyperthreading). Its multiplier is locked, so other means must be used to overclock it than for the I7-3960X or I7-3930k. It still supports quad core RAM and PCI-E 3.

    One minor cost item to consider: the LGA 2011 CPUs are the first retail boxed processors from Intel that don't include coolers. You'd need to buy one separately.
     
  20. Agent-A01

    Agent-A01 Ancient Guru

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    lol this

    get 7950
     

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