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SLI GTX 670 vs Crossfire 7970 Questions

Last response: in Graphics & Displays
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August 17, 2012 12:24:52 AM

I am starting to get more and more fed up with AMD every minute. At first I had two 6970s and an i7 3770 now through a series of upgrades I have crossfire 7970s and an i7 3770K @ 4.7GHz which bottlenecks both cards on bf3 leaving me with ~100 fps average and a minimum of ~55. So if I were to sell them and some other old cards so I would not loose any money, do you think it would be a smart coice to get two 670s?
I have Windows 7, (thinking about getting 8 soonish)
1100Watt ABS Majesty PSU
and my seemingly top of the line cpu bottlenecks my 7970s down to <70% gpu usage.

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a c 216 U Graphics card
August 17, 2012 12:41:30 AM
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What do you hope to accomplish by switching to 670's?

If you hope to relieve the bottleneck on the CPU, it won't change much, if at all. There may be a slight improvement on the minimums if you are lucky, only because AMD's crossfire tends to have slightly higher overhead, but we are only talking slightly. Then again, it could actually be worse.

Multiplayer maps, particularly large maps with 64 players, have a lot of CPU bottlenecking and there really isn't anything you can do to fix it. That is the nature of gaming. You can be happy to know that everyone else you play against has the same issue.
August 17, 2012 12:46:06 AM

bystander said:
What do you hope to accomplish by switching to 670's?

If you hope to relieve the bottleneck on the CPU, it won't change much, if at all. There may be a slight improvement on the minimums if you are lucky, only because AMD's crossfire tends to have slightly higher overhead, but we are only talking slightly. Then again, it could actually be worse.

Multiplayer maps, particularly large maps with 64 players, have a lot of CPU bottlenecking and there really isn't anything you can do to fix it. That is the nature of gaming. You can be happy to know that everyone else you play against has the same issue.


Yeah I was hoping to improve minimum fps but I honestly cannot find a single rig (searching through forums) that can keep frames at 60+ the ENTIRE time on all maps no matter what the gpu setup is :( 
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a c 216 U Graphics card
August 17, 2012 12:49:27 AM

iyzik said:
Yeah I was hoping to improve minimum fps but I honestly cannot find a single rig (searching through forums) that can keep frames at 60+ the ENTIRE time on all maps no matter what the gpu setup is :( 


That is the reality. Why do you find it so important to always by so high? Dropping to 55 FPS should not be that detrimental.
a c 216 U Graphics card
August 17, 2012 12:51:52 AM

I don't personally play BF3. I've just been repeating what everyone seems to say.

That said, it may be possible to drop certain settings that use CPU power, instead of GPU power. Many games use the CPU with shadowing and lighting, for example. You may be able to experiment with lowering CPU heavy settings, if there are any.
August 17, 2012 12:52:57 AM

bystander said:
That is the reality. Why do you find it so important to always by so high? Dropping to 55 FPS should not be that detrimental.


Oh I don't, the actual smoothness of the screen does not bother me at all, dont get me wrong. I feel no difference between 60 and 55 fps I was just more of curious if Nvidia had a better minimum but I guess not.
Surprises me very much.
Thank you alot, tis very helpful knowing that is the reality with everyone and not just my rig being weird. Thank you!
August 17, 2012 1:25:47 AM

Best answer selected by iyzik.
January 24, 2013 11:34:17 PM

Why would you go through all that hassle to switch gpus to nvidia if you can't even see the difference between 55 and 60fps? Seems absurd to me
!