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PCIe 3.0 16x and PCIe x16( running at 4x)

So I want to go with crossfire with my 7970 but is it smart to do this? as you can see with the PCI.?

I am playing on 1080p so it's not that big resolution
9 answers Last reply Best Answer
More about pcie 16x pcie x16 running
  1. Having one lane run at 16x and 4x might actually give you slower performance than having a single 7970.

    Minimum, and ideal bandwidth per lane is 8x/8x at the moment.
  2. wait... you have one lane at 3.0x16 and the other at 3.0x4? you should be fine in that case. 3.0x4 is roughly equal to the speed of 2.0x8... and 2.0x8 is fast enough for EVERY gpu on the market.
  3. We'll this is my mobo
    http://www.anhoch.com/pcmarket/index.php?cat_id=376&pid=33741
    Gigabyte Z77M-D3H
    Do you think is good for crossfire? Common people I am waiting for an answer, I can't wait to go and upgrade my PC anymore
  4. Best answer
    ok. just looked at it... in xfire that board has one slot running at pcie 3.0x16 and the other at pcie 2.0x4... unfortunately you'll probably see a +30% loss in performance from the 2nd 7970 in xfire. i wouldn't waste the cash, cause that will probably be a worse experience then just one by itself.

    :(

    Sorry to break the bad news.
  5. Oh well, it's all good, thank you, I guess I am going PS4, at least I won't spend a ton of cash to play a game I like.
  6. Spartans said:
    Oh well, it's all good, thank you, I guess I am going PS4, at least I won't spend a ton of cash to play a game I like.


    Are you sure? a game for PS4 twice as expensive, as for PC, so for example you buy 5 new AAA games ( I am not sure if PS4 has that many...) than it will be less then £150 for PC, but more than £300 for PS4.

    Why do you want to crossfire the 7970? it should play games at higher details than a PS4.
    Also, you can sell it, and buy a way better video card for around £350, from a price of 280x and with the money you got from the sold 7970
  7. Nefos said:
    Spartans said:
    Oh well, it's all good, thank you, I guess I am going PS4, at least I won't spend a ton of cash to play a game I like.


    Are you sure? a game for PS4 twice as expensive, as for PC, so for example you buy 5 new AAA games ( I am not sure if PS4 has that many...) than it will be less then £150 for PC, but more than £300 for PS4.

    Why do you want to crossfire the 7970? it should play games at higher details than a PS4.
    Also, you can sell it, and buy a way better video card for around £350, from a price of 280x and with the money you got from the sold 7970



    Yea I guess your right about the games, on PC I don't even spend money I pirate them, but I am concerned because I buy let's see now r9 290x, and after 3 mouths boom new gpu, then you have problems with compatibility, games will always run great on consoles, did you saw kill zone it looks a lot better than any game I've seen so far, and with my hd 7970 I can't even play assasings creed 4 on ultra, I play it on high, with low AA and getting 50 fps somethimes it drops to 40 fps, with 1080p monitor, and I don't plan to spend any more money, I mean 5 year old ps4 runs gta v, and I can't play gta4 it lags like hell, but maybe you are right maybe if I update to r9 290x I would have a lot of horsepower? I need to do a lot of researching.
  8. okay, first, please, try to write in shorter sentences, it will really help our work.
    First, the 2 game that you chose (Assassins Creed 4 and GTA4) are famous about bad optimization.
    R9 290x will be way more than enough if 1080p for very long time, it desinged for 4k, that is four times of the resolution.
    Yes, you are right, PCs are more hassle, drivers and so on, but with newer drivers games seem to run faster.
    Games on PS4 and Xbox one run on High details, but with that GPU and a good CPU you should play games in 1080p ultra details easily (except the bad optimized games)
    Thats true, that PS4 will play games easily in 4 years, but in 4 years PC gaming will be better looking, but for more money

    If you want to play games easily, for no hassle, then go with a console, but pay attention, games are super expensive, and please, do not tell people here again that you pirate games.

    If you are keen on an all-in-one solution for gaming and other task, than PC is your way, and it wont be more expensive, looking at the differences at your games and PS4 price
  9. Alright, thank you
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