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7870 crossfire, FX 6300,ASUS Mobo

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  • Asus
  • Bottleneck
  • Crossfire
  • Systems
Last response: in Systems
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October 15, 2014 12:24:36 AM

Hey all, so i was just curious if my FX 6300 is bottlenecking my 7870 crossfire setup..or if the cards themselves are not as strong as i like to think they are! While playing BF4 i get a average of maybe 40-50 FPS and it dips constantly with heavy fire in 64P battles to about 20-30...
Is this caused by the FX 6300? is it worth upgrading?
I also wanna note that my processor is OC'd to 4.3 GHZ
and my mobo is a ASUS M5A99FX PRO R2.0 AM3+
hope you guys can shed a little light on all of this! thanks guys

More about : 7870 crossfire 6300 asus mobo

October 15, 2014 8:06:40 AM

Yes, it is causing bottlenecks.

In this kind of setups, the FX CPUs start to show their weaknesses. Even with OC, it can't match a core i5 on gaming. The problem is that games barely use 4 cores, so having 6 cores (weaker cores) doesn't help. The 4 strong cores of the core i5 shine in this cases.

Better do an upgrade to a core i5 if you ever wanna see your crossfire setup stretch its legs.
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October 15, 2014 8:10:10 AM

The 6300 is extremely weak in multiple GPU setups, even overclocked. With that overclock it's pretty fair with a single GPU but it will struggle a bit with two or more cards.

Also, you should verify that the title you're playing has a crossfire profile. Otherwise, you might be better off using a single card on that game. Using crossfire with games that don't specifically have support for it can cause a plethora of issues.

As far as an upgrade, an 8320 or 8350 would likely help, but wouldn't be a cure all. With a 4.5 OC on an FX 8 core the chances of any remaining issues being CPU related would be fairly small.

Regarding the board, realize that even the r2.0 versions are several years old and you might benefit from a newer or higher end board as well. Although, that is a pretty decent budget board in any case.
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October 15, 2014 9:12:06 AM

kowashie said:
Hey all, so i was just curious if my FX 6300 is bottlenecking my 7870 crossfire setup..or if the cards themselves are not as strong as i like to think they are! While playing BF4 i get a average of maybe 40-50 FPS and it dips constantly with heavy fire in 64P battles to about 20-30...
Is this caused by the FX 6300? is it worth upgrading?
I also wanna note that my processor is OC'd to 4.3 GHZ
and my mobo is a ASUS M5A99FX PRO R2.0 AM3+
hope you guys can shed a little light on all of this! thanks guys


Hi I run a 7870 crossfire solution with BF4 and get over a 100 fps on a 120hz monitor using a Intel Core i5-3570K 3.40GHz the game is set on ultra settings, I have 8 gig DDR3 1866 Mhz memory as well. Sounds to me like its your chip, you could try Mantle in the meantime apparently it is an improvement although I don't find it as stable but in all honesty don't need it. Both my cards are identical MSI 7870 OC which although not absolutely necessary I think makes a difference as I never have any problems with the set up. The other issue could be your cards aren't getting enough power to them what PSU are you using? I use an OCZ Fatal1ty 750W which is just about enough.
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October 15, 2014 11:40:17 AM

Hey thanks for the responses! Right now i don't have the cash to completely swap to Intel. i'll probably get a 8350 and oc to 4.5ghz as someone mentioned above. I use a 850W EVGA powersupply. i usually just play games like LoL, BF4, and archeAge and all support crossfire/sli. So you guys all agree its the FX 6300? and upgrading it will "help" my problem? But not completely fix it? Thanks all for the replies!
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October 15, 2014 11:47:59 AM

I don't think upgrading to the FX-8350 will help. That CPU is from the same architecture, so it's the same to OC your 6300 4.5GHz because you're still using up to 4 of its cores.

I really recommend to just save money for a more solid platform.
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October 15, 2014 3:06:16 PM

Brunostako said:
I don't think upgrading to the FX-8350 will help. That CPU is from the same architecture, so it's the same to OC your 6300 4.5GHz because you're still using up to 4 of its cores.

I really recommend to just save money for a more solid platform.


I don't agree with that at all. I know plenty of people with FX 8 core cpus and big cards that can game any title at high and ultra settings, depending of course on the number of monitors and resolution, which isn't really a CPU issue anyway. An 8 core FX isn't going to bottleneck any card that I'm aware of. (Maybe a pair of Titans or R9 290x2s but anything short of a brand new Haswell X99 platform is probably going to with struggle a bit with those.) Especially with a big fat overclock.

For the price of 135.00 to jump up to an 8320, (which I would probably recommend over the 8350 since it's the same exact chip and you can get the same exact performance as you can with an 8350 for forty bucks less), versus the four or five hundred bucks it would cost to switch over to a worthwhile i5 setup, the 8320 wins hands down in my book.
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October 15, 2014 5:22:47 PM

Ill probably end up switching to a 8350 and OC it as high as i can ! I don't realistically have the funds to replace the mobo and the Cpu. So just the CPU and hopefully thatll fix my problem! thanks guys just wanted to hear it from some other people !
Also i was planning on selling my 7870Xfire setup and buy a new card. any recommendations for the $350-400 price range?
On a side note ( i know my mobo doesnt support it) but what are your thoughts on the FX9370?

EDIT: And the FX9590 ?
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October 15, 2014 6:20:01 PM

They're junk, and I traditionally like AMD products. I'd never buy one of those firebrands though. You need a jet turbine to keep them cool or a large body of water like the Mississippi river channeled through you're case. Well, that might be the tiniest bit of an exaggeration but the fact is they run extremely hot and use an unbelievable 225w of juice. And for the price, which isn't low at all compared to competing i5 and i7 cpu's, they don't perform on a level that equates to the price.

I've yet to really see a good review of them using any point of view. Also, and I'll emphasize this again, I think buying the 8350 is a waste of money when they are the same chip and you can get the same clock speed and performance using an 8320 and save, currently, 30 bucks. All the good chips are upbinned to 8370's anyhow so the chances of getting a really good 8350 over one that's exactly the same as an 8320, but clocked higher from the factory, are slim.
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October 16, 2014 11:23:30 AM

Just placed my order on the egg for the 8320! ill let you guys know if this fixes my problem thanks all! :D 
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October 16, 2014 11:28:31 AM

Good luck, man!
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a b Ĉ ASUS
October 16, 2014 1:27:12 PM

Game on bro.
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