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T-900 build Question on 6850K Overclock

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joedreamliner78

Registered
Joined
Dec 4, 2016
Hi everyone,
Finished my T-900 Thermaltake build and have a stable OC at 4.4 thing is I am a bit worried about the core v at 1.45. From what I understand the 6850 can tolerate a high voltage. Running Prime 95 I am hitting temps of 76-96c under full load and 32-45c under normal operation. Seems a bit high under water no? I have attached screenshots of the bios please have a look I know there are many of you with a high level of experience and see if something should be changed. Thanks!

MSI_SnapShot.jpg MSI_SnapShot_00.jpg MSI_SnapShot_01.jpg MSI_SnapShot_02.jpg
 

wingman99

Member
Joined
Dec 10, 2003
The temperature will be fine not using Prime95. The CPU will throttle at 100c so don't worry.

Can you achieve a lower Vcore at 4.4GHz?
 
OP
J

joedreamliner78

Registered
Joined
Dec 4, 2016
The temperature will be fine not using Prime95. The CPU will throttle at 100c so don't worry.

Can you achieve a lower Vcore at 4.4GHz?

Unfortunately anything lower than 1.45 I get the infamous blue screen.

Appreciate your help! How do the other settings look to you? I did make changes and as for the ram haven't even touched it.
 

wingman99

Member
Joined
Dec 10, 2003
The other settings I see in Bios is fine on Auto. Just try X.M.P enable to overclock the memory, it will set the memory speed, voltage and timings, sub-timings, Vccio, Vccsa.
 

Woomack

Benching Team Leader
Joined
Jan 2, 2005
I was also surprised when I got 6800K. Looking at the various results in the web ~4.5GHz requires ~1.4V in above average chips.
RAM should run without issues at XMP and then all voltages will be adjusted automatically. When you set them manually you can be also surprised as 3000+ clock requires much higher SA voltage than on previous chips.
 

cdawall

Member
Joined
Feb 4, 2009
Location
cypress, tx
My chip is above average and still requires 1.42v for 4.54ghz. They seem to be fine with this as a 24/7 voltage from what I can tell even if it exceeds what it took for similar haswell-e chips at the same clocks.
 

Woomack

Benching Team Leader
Joined
Jan 2, 2005
3 out of 4 5820K which I had could make 4.7GHz 1.35-1.37V. My current 6800K requires ~1.38-1.40V for 4.5GHz and I use it 24/7 at 4.2GHz ~1.220V. I thought it's bad but I saw worse results on hwbot in quick tests so I'm not complaining.
Harder is to overclock cache and memory while BW-E supposed to have better memory controller. When X99M Killer back from RMA then I will try max memory frequency. Right now I have x99 in the case where I can't install any taller memory because of radiator placement. The only memory for higher clocks than 3200 which I have now is TridentZ or Vengeance LED.

Here is BW-E OC guide from ASUS. Some settings can be different but most are the same so maybe something here will help http://edgeup.asus.com/2016/06/17/broadwell-e-overclocking-guide/
 
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cdawall

Member
Joined
Feb 4, 2009
Location
cypress, tx
3 out of 4 5820K which I had could make 4.7GHz 1.35-1.37V. My current 6800K requires ~1.38-1.40V for 4.5GHz and I use it 24/7 at 4.2GHz ~1.220V. I thought it's bad but I saw worse results on hwbot in quick tests so I'm not complaining.
Harder is to overclock cache and memory while BW-E supposed to have better memory controller. When X99M Killer back from RMA then I will try max memory frequency. Right now I have x99 in the case where I can't install any taller memory because of radiator placement. The only memory for higher clocks than 3200 which I have now is TridentZ or Vengeance LED.

Here is BW-E OC guide from ASUS. Some settings can be different but most are the same so maybe something here will help http://edgeup.asus.com/2016/06/17/broadwell-e-overclocking-guide/

Yea my 5820K took a bit more for 4.7 (1.45v), but it was a weird scaling chip. 4.54 only took 1.32v on it, chip was a hot head would be a really good cold clocker from the looks. Ram also clocked pretty well on it.

proxy-php.png


I haven't really tried the 6850K on memory yet I am going to order another 3200MHZ 16GB kit to match my good kit and relagate the 2400mhz kit elsewhere, but this is where I am right now. Oddly enough even at the higher voltage this chip runs 10-20c cooler than my 5820K did.


proxy-php429.png


You literally have to heep voltage into it to get further.

464x-cpuz.png
 
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Woomack

Benching Team Leader
Joined
Jan 2, 2005
I'm wondering about max safe voltages. There is no info about it in Intel docs. Usually there is a table with voltages while for Broadwell-E there are only min/max values for VCCIO and some other voltages which are not important when you OC on air/water.
 
OP
J

joedreamliner78

Registered
Joined
Dec 4, 2016
Thanks for all the comments guys. I am seeing that it is true this chips are just hungry for my V-core. Avg temp now in games is around 55c. Very little load.

- - - Updated - - -

The other settings I see in Bios is fine on Auto. Just try X.M.P enable to overclock the memory, it will set the memory speed, voltage and timings, sub-timings, Vccio, Vccsa.

I just wanted to say thank you for this. It did increase my ram speed to 3200 with XMP enabled. So far everything is still stable!