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990X 8 hours prime stable, To easy? - Page 2

post #11 of 20
I had a difficult time with my 980. The imc wqs super sensistive too little voltage and bsod 124 too much and bsod. Could be the large amount of memory but stil had the issue when testing with 8gb 4gbx2.

Plus I would stress test stable for hours and then crash in Arch Linux still. I did eventually get my target 4.0 though. 990 sounds much easier to OC.
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post #12 of 20
Quote:
Originally Posted by Sir Overkill View Post
Nope 8 look again started at like 3:06am pic taken at 11:07am Im pretty sure

Thanks. Sir Overkill.
Yeah, but the workers only show 6hrs...

Again, not to nitpick, as the difference between 6hrs and 8hrs is probably minimal...

Im just a tad observant when it comes to these things!

post #13 of 20
Quote:
Originally Posted by UberDan View Post
Hi Sir Overkill......I am in the process of OC my 990X. It looks like I finally have it fully stable with all cores staying active. I had an OC for a while I thought was totally stable, since it didn't BSOD. However it became apparent that some cores were shutting down to keep it stable, rather than BSOD. You should run prime and coretemp, and make sure that ALL cores stay at 100% load in Prime.

I am currently at 4.6GHz with no HT, since it's a gaming machine. Vcore is at 1.41v, QPI/VTT is at 1.3v, CPU PLL is at 1.26v, QPI PLL is at 1.28v. Clock is 200 bclk x 23. Ram is at 2000MHz 9-9-9-24 @ 1.6v. Temps idle at around 33c and max out at 67c during a long prime95.

However, the above OC was 100% stable (so it seemed) with a 1.35v Vcore, but like I say above the cores were shutting down. To keep ALL cores active during a 10hr Prime I had to bump it up to 1.41v.

I will reckon I will be able to get some lower temps when i try lowering the other voltages one by one.
Try changing your CPU PLL to 1.44v. Take the ram and lower the clock speed to 1600Mhz until you get the CPU stable, that way you can narrow down how much VTT voltage you need. Most of what I have seen/read, any 2000Mhz ram above need something in the 1.4v VTT range on the x58 platform due to the memory controller on the chip not being very good.

As far as the OP goes, 1.34v should be where you need to be for 4.4Ghz. I had to fine tune my 980x as it was picky about vcore, too much or too little and it would crash on me.
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post #14 of 20
980x and 990x tend to overclock a lot.

I think the record of oc with the 980x was like 7 or 8 Ghz.
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post #15 of 20
Quote:
Originally Posted by Captain1337 View Post
980x and 990x tend to overclock a lot.

I think the record of oc with the 980x was like 7 or 8 Ghz.
More like 6.9.
post #16 of 20
Quote:
Originally Posted by cavallino View Post
I had a difficult time with my 980. The imc wqs super sensistive too little voltage and bsod 124 too much and bsod. Could be the large amount of memory but stil had the issue when testing with 8gb 4gbx2.

Plus I would stress test stable for hours and then crash in Arch Linux still. I did eventually get my target 4.0 though. 990 sounds much easier to OC.
The 990x is basically a well binned 980x.

Quote:
Originally Posted by Captain1337 View Post
980x and 990x tend to overclock a lot.

I think the record of oc with the 980x was like 7 or 8 Ghz.
7078.7Mhz for the 980x & 7092.8Mhz for the 990x are the current records.
    
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post #17 of 20
Thread Starter 
Quote:
Originally Posted by Ishinomori View Post
Yeah, but the workers only show 6hrs...

Again, not to nitpick, as the difference between 6hrs and 8hrs is probably minimal...

Im just a tad observant when it comes to these things!

Dude have a look at Worker 1 its different from the rest because its the only one I scrolled down on.

Thanks, Sir Overkill.
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post #18 of 20
Thread Starter 
Quote:
Originally Posted by utnorris View Post
Try changing your CPU PLL to 1.44v. Take the ram and lower the clock speed to 1600Mhz until you get the CPU stable, that way you can narrow down how much VTT voltage you need. Most of what I have seen/read, any 2000Mhz ram above need something in the 1.4v VTT range on the x58 platform due to the memory controller on the chip not being very good.

As far as the OP goes, 1.34v should be where you need to be for 4.4Ghz. I had to fine tune my 980x as it was picky about vcore, too much or too little and it would crash on me.
But my ram is at 2000Mhz, and my VTT/QPI is stock.

Thanks, Sir Overkill.
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post #19 of 20
I tried overclocking my 990x but I'm havng so much trouble getting it stable whilst using a noctua NH-D14 as my heatsink fan. I can boot into windows but whilst running intel burn-in test and prime 95 it keeps on crashing, tried everything to fix it but can't get it working so I resorted to using the dummy overclocking (gigabyte's easytune6) lol. Anyone have any advice, would be greatly appreciated!
    
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post #20 of 20
With 12 GBs of memory you will need a VTT increase.
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