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980x vs 990x - Page 2

post #11 of 19
Quote:
Originally Posted by zpliptzy;15338491 
Is there something else that maybe I'm missing?

It seems downright foolish to get an i7-990x for $1,000 when the i7-970 goes for $570.
post #12 of 19
Quote:
Originally Posted by jlells01 View Post
It seems downright foolish to get an i7-990x for $1,000 when the i7-970 goes for $570.
The 970 has a fixed multi, so I would skip that and grab a 990X too.
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post #13 of 19
Quote:
Originally Posted by NoGuru View Post
The 970 has a fixed multi, so I would skip that and grab a 990X too.
If this is a production machine, I wouldn't want to overclock. To prove a point though...

"The overclock of the i7-970 was achieved by dropping the CPU multiplier to 20x and raising the QPI to 200MHz. We overclocked in this way so that we could run our RAM at its optimum 1,600MHz frequency. However, no amount of fiddling with the QPI bus or the multiplier, or the various voltages of out motherboard could get the CPU to run stably beyond 4GHz. To stabilise the overclock we boosted the vcore to 1.38125V, the CPU PLL to 1.96V, the QPI to 1.375V, the IOH to 1.3V and the ICH to 1.2V."

That brings it from 3.2GHz to a solid 4GHz. I still don't see the 990x being worth nearly twice the price...
Edited by jlells01 - 10/17/11 at 3:29am
post #14 of 19
Quote:
Originally Posted by jlells01 View Post
If this is a production machine, I wouldn't want to overclock. To prove a point though...

"The overclock of the i7-970 was achieved by dropping the CPU multiplier to 20x and raising the QPI to 200MHz. We overclocked in this way so that we could run our RAM at its optimum 1,600MHz frequency. However, no amount of fiddling with the QPI bus or the multiplier, or the various voltages of out motherboard could get the CPU to run stably beyond 4GHz. To stabilise the overclock we boosted the vcore to 1.38125V, the CPU PLL to 1.96V, the QPI to 1.375V, the IOH to 1.3V and the ICH to 1.2V."

That brings it from 3.2GHz to a solid 4GHz. I still don't see the 990x being worth nearly twice the price...
Who said this was a production machine? Prove what point? You don't have to prove anything to me.
IDK, who or what you are quoting but I never said it was not overclockable, I said it has a fixed multi which means it will only go up so high and stop.
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post #15 of 19
If nothing else, this article may help the OP out: http://www.xbitlabs.com/articles/cpu...600k-990x.html

"As for the specific recommendations, at this point it would make a lot of sense to walk away from the LGA1366 platform in general and the Core i7-990X Extreme Edition processor in particular. Much cheaper Core i7-2600K will be just as good in terms of performance in the majority of popular applications, and will leave Core i7-990X Extreme Edition behind in energy-efficiency and overclocking. Of course, there are specific applications where six-core Core i7-990X Extreme Edition is still very good, but a system based on it will cost an equivalent of two Sandy Bridge PCs."
post #16 of 19
Meh, a 4ghz 970 is nothing compared to a 4.6ghz 990x in a few months the price would be nice...
post #17 of 19
Quote:
Originally Posted by zpliptzy View Post
I was kinda almost set on the 980x, but after seeing the clocking differences between the 2, I may shell out the extra for the 990x. It's still a few months down the road, but...we'll see. Thanks for the feedback, +rep
I suggest you to go for used 980X or 990X with warranty, they can be found at half price of the new ones and you won't lose too much money if you upgrade to SB-E any time soon, and if seller is honest you know oc potential of the chip
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post #18 of 19
IIRC they don't make 980X anymore, they've downgraded the 980X to be a non-extreme chip, that is, they took away the unlocked multi. That makes it the i7-980 instead of the former i7-980X.
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post #19 of 19
Quote:
Originally Posted by wongwarren View Post
IIRC they don't make 980X anymore, they've downgraded the 980X to be a non-extreme chip, that is, they took away the unlocked multi. That makes it the i7-980 instead of the former i7-980X.
It wasn't downgraded, it's an entirely different chip. Just as the 930 was added after the 920, the 980 was added after the 970.
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