Some help with 5820k new build... I'm baffled

Legend · 7 Dec 2014 at 20:11

This is confusing me, but I'm a newb to overclocking so I imagine it's something obvious.

I have a 5820k with an Asus X99-S, and 16GB 2400mhz RAM.

Upon first installing everything, the auto overclock in the BIOS indicated in that I was getting just under 4.2Ghz. CPU-Z and Core Temp in Windows (8.1) however, didn't seem to show this.

Since updating the BIOS (to 1103), it isn't showing anything higher than 3366mhz in the BIOS, despite using the auto overclock. In Windows now, I don't know what's going on, because in CPU-Z seems stuck on 1223.8 (although occasionally jumps to 2000 and something), and Core Temp is jumping all around 1200-3000+ (but mostly under 1500). What's going on? Can someone explain all this to me?

I don't know what I should be putting the TPU/EPU switches on the motherboard to. Currently it's on TPUII and EPU.

:confused:

Mariusz · 8 Dec 2014 at 10:01

Are you stess testing in Windows? If not the cpu will downclock to save power. Run Intel Burn test whilst you have CPUZ and Core temp open to monitor cpu usage.

Spudley · 12 Dec 2014 at 22:39

Have you turned off the Intel Speedstep setting to force the full multiplier 24/7?

Legend · 19 Dec 2014 at 01:54

Spudley said:
Have you turned off the Intel Speedstep setting to force the full multiplier 24/7?

No, I realise now that this is what's causing it. Should it be off? Obviously to get a constant 24/7 OC it is, but is that such a good thing?

russell664 · 19 Dec 2014 at 15:56

If it is on the multiplier will change at lower loads. However at full load it should stay at your overclocked frequency. That's what my Haswell does anyhow.

JustCallMeVlad · 19 Dec 2014 at 17:37

Dont use auto overclock. Waste of time.

46X Multiplier
1.35v vcore
1.9v vrin

reiyushin · 19 Dec 2014 at 17:43

What's vrin? running the same setup so interested to see what happens here

JustCallMeVlad · 19 Dec 2014 at 17:47

reiyushin said:
What's vrin? running the same setup so interested to see what happens here

Vrin is the voltage supplied to the on die VRM's. 1.9v-2.0v is pretty much the sweet spot for Haswell. For my 5820K i need 1.9v for 4.5-4.6. For 4.8Ghz i need 2.0

reiyushin · 19 Dec 2014 at 17:57

Ok great

more settings to have a play with

Legend · 19 Dec 2014 at 18:36

I am starting to think I have a dog of a chip, as anything more than 4.3 and it won't get past boot screen. I am new to this, but I've set it at 42x multiplier with 101 BCLK, 1.3v.

JustCallMeVlad · 19 Dec 2014 at 19:13

Legend said:
I am starting to think I have a dog of a chip, as anything more than 4.3 and it won't get past boot screen. I am new to this, but I've set it at 42x multiplier with 101 BCLK, 1.3v.

Whats your Vrin or its also called "CPU Input Voltage" set at?

Legend · 19 Dec 2014 at 19:43

JustCallMeVlad said:
Whats your Vrin or its also called "CPU Input Voltage" set at?

That is on 'Auto' and at 1.904

I have a Nepton 240M AIO, if relevant.

JustCallMeVlad · 19 Dec 2014 at 20:50

Legend said:
That is on 'Auto' and at 1.904

I have a Nepton 240M AIO, if relevant.

Set it manually to 2.0v

Legend · 19 Dec 2014 at 21:01

JustCallMeVlad said:
Set it manually to 2.0v

And raise the multiplier as well?

JustCallMeVlad · 20 Dec 2014 at 05:43

Legend said:
And raise the multiplier as well?

How are temps?

Legend · 20 Dec 2014 at 11:12

Currently (at 4.3) I'm just nudging over 70 on AIDA64.