Vdroop, Loadline Calibration and Overclocking issues. i7 6700K

[laushik]

So when my cpu (and mb bios) is completely stock my idling vcore is 1.4v-1.44v. When the CPU is at max load (still stock) the vcore goes under 1.3v!! So I tried going for 4.6 ghz... But this time I used Loadline Calibration. After trial and error the cpu is barely stable (5 mins on p95) at 1.38v with LLC set to the highest setting (I only have 2 settings for LLC - Standard and High). Under max load with 4.6 ghz, 1.38v, Highest LLC, I'm still experiencing Vdroop... The vcore drops from 1.38 v at idle, to 1.356v under max load, and I'm still not able to go beyond ~ 5 mins on prime 95 (blend test). I don't want to go any higher on the vcore since my temps are peaking to 88 C. What do you guys think I should do?

 

• CPU
  I7 6700K 
• Motherboard
  Gigabyte Z170 HD3
• RAM
  GSKILL RIPJAWS V DDR4 16GB 3000MHZ
• GPU
  MSI GTX 1070 GAMING X 8G
• Case
  NZXT S340 RED
• Storage
  WD 1TB BLUE AND SAMSUNG EVO 250GB SSD
• PSU
  EVGA 650W GQ
• Display(s)
  LG 25UM58-P ULTRAWIDE
• Cooling
  H100I GTX
• Keyboard
  CORSAIR K70
• Mouse
  RAZER NAGA EPIC CRHOMA WIRELESS
• Operating System
  Windows 10 PRO
• PCPartPicker URL
  http://ca.pcpartpicker.com/list/tVxgtJ

      

[Jurrunio]

Get a better cooler. High Vdroop because that's a crappy board.

 

You can buy The Z170 Maximus 8 Ranger for $107 or Asrock OC Formula for $132, so maybe it's worth buying a great board like this, as long as you know how to mod the BIOS to fit 8th and 9th gen CPUs

[laushik]

2 minutes ago, Jurrunio said:

Get a better cooler. High Vdroop because that's a crappy board.

 

You can buy The Z170 Maximus 8 Ranger for $107 or Asrock OC Formula for $132, so maybe it's worth buying a great board like this, as long as you know how to mod the BIOS to fit 8th and 9th gen CPUs

Do you think I can't get 4.6 ghz because of the mobo, or because I lost the silicone lottery? 

[Jurrunio]

6 minutes ago, laushik said:

Do you think I can't get 4.6 ghz because of the mobo, or because I lost the silicone lottery? 

because of the motherboard

[laushik]

Just now, Jurrunio said:

because of the motherboard

So, for now do you think I should just stick with a stable 4.5 ghz OC at 1.33v or stay completely stock until I upgrade my MB? 

[Jurrunio]

2 minutes ago, laushik said:

So, for now do you think I should just stick with a stable 4.5 ghz OC at 1.33v or stay completely stock until I upgrade my MB? 

I'd just stay stock, what cooler are you using?

[laushik]

3 minutes ago, Jurrunio said:

I'd just stay stock, what cooler are you using?

This one: https://www.corsair.com/ca/en/Categories/Products/Liquid-Cooling/Hydro-Series™-H100i-GTX-Extreme-Performance-Liquid-CPU-Cooler/p/CW-9060021-WW

 

However, don't forget, my mb likes to feed the cpu 1.4v+ at idle (at stock bios settings). If I OC it to the 4.5ghz 1.33v it will stay below 1.33 v.

[Jurrunio]

2 minutes ago, laushik said:

This one: https://www.corsair.com/ca/en/Categories/Products/Liquid-Cooling/Hydro-Series™-H100i-GTX-Extreme-Performance-Liquid-CPU-Cooler/p/CW-9060021-WW

That's a decent cooler, you're running hotter than what you should be. Check cooler's mounting and whether the pump and fans run faster under high CPU temperatures

 

3 minutes ago, laushik said:

However, don't forget, my mb likes to feed the cpu 1.4v+ at idle (at stock bios settings). If I OC it to the 4.5ghz 1.33v it will stay below 1.33 v.

Stock + undervolting, that is.  Crappy boards like this have rather large voltage ripple, so even if the average voltage is low it can still hit spikes that wear out the CPU faster.

[laushik]

Should I undervolt with LLC or without? Because there will still be Vdroop.

[laushik]

5 minutes ago, Jurrunio said:

That's a decent cooler, you're running hotter than what you should be. Check cooler's mounting and whether the pump and fans run faster under high CPU temperatures

 

Stock + undervolting, that is.  Crappy boards like this have rather large voltage ripple, so even if the average voltage is low it can still hit spikes that wear out the CPU faster.

Should I undervolt with LLC or without? Because there will still be Vdroop.

[Jurrunio]

Just now, laushik said:

Should I undervolt with LLC or without? Because there will still be Vdroop.

I myself use offset voltage mode to do my undervolt so I don't need LLC, but if you do it with manual mode then yes you need LLC

[Benjeh]

58 minutes ago, laushik said:

So when my cpu (and mb bios) is completely stock my idling vcore is 1.4v-1.44v. When the CPU is at max load (still stock) the vcore goes under 1.3v!! So I tried going for 4.6 ghz... But this time I used Loadline Calibration. After trial and error the cpu is barely stable (5 mins on p95) at 1.38v with LLC set to the highest setting (I only have 2 settings for LLC - Standard and High). Under max load with 4.6 ghz, 1.38v, Highest LLC, I'm still experiencing Vdroop... The vcore drops from 1.38 v at idle, to 1.356v under max load, and I'm still not able to go beyond ~ 5 mins on prime 95 (blend test). I don't want to go any higher on the vcore since my temps are peaking to 88 C. What do you guys think I should do?

Spoiler

• CPU
  I7 6700K 
• Motherboard
  Gigabyte Z170 HD3
• RAM
  GSKILL RIPJAWS V DDR4 16GB 3000MHZ
• GPU
  MSI GTX 1070 GAMING X 8G
• Case
  NZXT S340 RED
• Storage
  WD 1TB BLUE AND SAMSUNG EVO 250GB SSD
• PSU
  EVGA 650W GQ
• Display(s)
  LG 25UM58-P ULTRAWIDE
• Cooling
  H100I GTX
• Keyboard
  CORSAIR K70
• Mouse
  RAZER NAGA EPIC CRHOMA WIRELESS
• Operating System
  Windows 10 PRO
• PCPartPicker URL
  http://ca.pcpartpicker.com/list/tVxgtJ

      

 

 

We have the same CPU and for me at 4.7ghz I need 1.44v I think, I noticed the higher the mhz of the cpu the more unstable my ram became and it needed more voltage at 1.4v I have 3200mhz ram.

 

My LLC is on level 6 with i think 130% current capacity (sorry I can't remember what its called completely). Your LLC seems to be ass backward to be honest to me, 4.6ghz is pretty low and 1.38v should be stable depending on the chip, try upping your RAM voltage and see if that helps with stability.