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The 990x Knowledge base...

post #1 of 22
Thread Starter 
The purpose of this thread is simple. Anything and everything you know, from experience, about the 990x.
I am one of the fortunate, but often flamed owners of one of these chips. I am enjoying some truly astonishing performance so far. The thing overclocks easily and has a pretty good memory controller. I am currently at a very stable and very cool 4.3 with HT on. Ran CPUmark and uploaded my results, obviously I destroyed the current highest score for CPU.

I have noticed that there is little info available for these bad boys. I realize they are still new, but that is the point of this thread. I would like to discourage any flaming here as I don't want it mucking up the data. Besides isn't that what we are all here for?, to advance knowledge and push the limits of new hardware?

Lets find out together what this sucker can really do, I've heard stories of nearly 5 on air, but I think it was Intel itself pulling that, likely picked the highest bin they could. Anyway, lets break these little beasties in shall we?

I will be back after wife falls asleep to offer my own findings in detail.
post #2 of 22
Well from what I have seen almost all of these 990x will clock to 5-5.6ghz on air.

Since they are B1 stepping the speculation is that they are binned 980x, but they could also be higher grade silicon all together just without any changes, but Intel ussually uses a stepping change if they do somthing significant.

I can hit 5.2ghz on air, and run some stupid benchmarks at 5ghz. I can run all benchmarks at 4.8ghz, and well the problem is that I am on air. If i put it under water i could probably do 5ghz as heat was becoming a problem. I am going to not **** up my 990x because I need it for my X58A-OC board review where I am going to put it subzero.

Anyways it rocks, 5.2ghz on a G1 Assassin motherboard, 230blck on the mobo too, its not a bad mobo for overclocking, its actually impressive.

People hate because they can't afford it, or are pissed b/c they think their Sb system is better. you shouldn't get flamed at all for buying the best. God knows if i had the money I would.



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post #3 of 22
How much do they cost?
 
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post #4 of 22
Way to kill your chip. If i have dropped 1k on a 32nm CPU, i'd never exceed 1.35v 7/24.
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post #5 of 22
Quote:
Originally Posted by Nautilus View Post
Way to kill your chip. If i have dropped 1k on a 32nm CPU, i'd never exceed 1.35v 7/24.
umm 1.35 is low more like exceed 1.42 ive been running my 980x at 4.3ghz 1.38 volts no issue at all runs cold idle at 26c and full load 40c
    
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post #6 of 22
Thread Starter 
First of all...

@ sin: Thanks for the props. Also what, if anyone knows, is the safe limit on this sucker according to Intel. I know I should look, forgive me . 5.6 is pretty freaking impressive. I am on liquid, but trying to keep volts as low as possible.

@ Metal beer: I got mine for just over a grand after shipping. At the time I was reselling most of my old sig-rig and thus really only lost out about 600 after additional graphics.

@ andrew: Thanks for the info. BTW how long have you been running that sucker at those speeds/volts?


Thanks for those of you taking an interest and thanks for any info in the future. Now here is what I got after tinkering around a bit.

I need to get my real boards name up here sorry I need to look later... That said.


post #7 of 22
Thread Starter 
Sorry for the quick post, but forgot to upload my actual machine...

Whaddya guys think?

post #8 of 22
Quote:
Originally Posted by Nautilus View Post
Way to kill your chip. If i have dropped 1k on a 32nm CPU, i'd never exceed 1.35v 7/24.
It was for a validation, don't think he was loading it at those clocks/volts on air.
It's all about the cooling, my 980x has probably seen over 30 hours at 1.8V +, haven't seen any sign of degradation.
When i first got it stabilized a 24.7 overclock, it is still completely stable at the same clocks/volts as the day I got it...

I'm working on a trade, decided I want to try one of the 990x instead, certainly can't have worse cold boot/bug issues than the 980x I have.
    
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post #9 of 22
Quote:
Originally Posted by NonOtherThenI View Post
Sorry for the quick post, but forgot to upload my actual machine...

Whaddya guys think?
Nice machine mate, seems you got a solid one from intel. I'm thinking of selling my current 980x chip and just whipping myself a 990x tbh.
post #10 of 22
yes i am not stupid, that was for validation and it only stayed at those volts for testing, no loading its much safer than loading 3d app or burn test to **** up the chip. Under water i feel safe running at 5ghz on air 4.8ghz 24/7.

id stay under 1.45v 24/7 on water and 1.4v 24/7 on air.

Intel states its 1.35 they say the same for bloomfield but the thing is 45nm can handle voltage better than 32nm, so 1.35v is a good number to go by. 1.55v is vabsolute, but under 0c i have seen over 1.9v.
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X99 Main Rig
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CPUMotherboardGraphicsRAM
Intel 5960X Extreme Edition @ 4.5GHz Always Changing VisonTek R9 290 G.Skill Ripjaws 4 16GB (4x4GB) DDR4 @ 3200MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 128GB M.2 PCI-E 4x SSD Apotop 256GB SSD 1.82TB NAS Noctua NH-D15 with both fans 
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Win7 Pro Enermax 1000W 
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