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970x vs. 990x

post #1 of 20
Thread Starter 
What are the main differences between these 2 CPUs? I know that they are both 6 core... But with the 970 being $400 less than the 990 I have to ask what the 990 is bringing to the table?

If I oc the 970 to 990 speeds will the run the same clock for clock??
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post #2 of 20
The 990x has an unlocked multi, so is capable of higher overclocks with extreme cooling than the 970. I've also read that it has an improved IMC, so should be able to handle higher uncore clocks/memory frequency.
    
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post #3 of 20
Quote:
Originally Posted by FtW 420 View Post
The 990x has an unlocked multi, so is capable of higher overclocks with extreme cooling than the 970. I've also read that it has an improved IMC, so should be able to handle higher uncore clocks/memory frequency.
Yup, unlocked multiplier and improved IMC are the two key differences between the 990 and the 970
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post #4 of 20
i have the 970 and i can get 4.6 np in MY OPINION the 990x isnt worth it
post #5 of 20
The 990X might actually clock like the recent SB chips, like 4.8GHZ on air(most will go to 4.5). I don't see many 970s running at 4.5.
    
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post #6 of 20
Yep. The 990X is generally going to be a slightly better chip than the 970. You might get a few more MHz on air but the biggest differences are going to be with extreme cooling (dry ice/liquid nitrogen/phase change).

The unlocked multiplier on the 980X/990X makes the overclocking a little more convenient in that it adds possible core/memory combinations that might otherwise not be possible.

However, in my opinion the 970 has a high enough multiplier to capture most any combination you need for your overclock.

If you're just running air or water, I'd recommend the 970.
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post #7 of 20
Quote:
Originally Posted by FtW 420 View Post
The 990x has an unlocked multi, so is capable of higher overclocks with extreme cooling than the 970. I've also read that it has an improved IMC, so should be able to handle higher uncore clocks/memory frequency.
not only cpu multiplier is a difference. the qpi is also higher, like in all extreme models from i7 range. the k models got unlocked multiplier, and only that. x versions got unlocked multiplier and higher qpi.

ofc 990x is better binned silicon, but still, overclocking is more like luck XD.

ps there is no 970x
post #8 of 20
Quote:
Originally Posted by Onions View Post
i have the 970 and i can get 4.6 np in MY OPINION the 990x isnt worth it
Lucky chip.
    
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post #9 of 20
Thread Starter 
You guys as usual are not helping my impulse buying by telling me the 990x really is that much better lmao...
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The Gibson
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post #10 of 20
Quote:
Originally Posted by Lostintyme View Post
The 990X might actually clock like the recent SB chips, like 4.8GHZ on air(most will go to 4.5). I don't see many 970s running at 4.5.
It is not like SB at all where 4.8Ghz is a given on air or water.

My friend has a 990x and what we've noticed is that the 990x gets higher OCs with a tiny bit lesser volts compared to my 980x.

You might be able to get 4.4Ghz on air with full stability with the 990x, ofcourse with a nice air cooler.
    
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