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i5 6600k voltage woes

i5 6600k voltage woes

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Breadstonee
Member
220
12-16-2024, 10:39 AM
#1
I have configured my i5 6600k with a multiplier of 44x, manual Vcore at 1.290, and LLC set to 5. When running Prime95, the peak Vcore reached was 1.296. During the blend test, the Vcore stabilized around 1.312. Reducing voltage would lower the Vcore further, or switching to LLC 4 would eliminate the 0.016 margin and trigger an error. I found that adjusting the voltage by -40 offset can yield similar results (values between 1.296 and 1.312). Lowering it to 35 causes the maximum to approach 1.328, while going up to 45 removes that precise 0.016 range. There are stories about the i5 6600k reaching 4.4 or 4.5 at lower or standard voltages; I’m cautious about raising it further. So far, temperatures have stayed stable, though stress testing at 4.5 required a voltage increase to 1.36, which felt too high. I value any advice or guidance you can offer.
B
Breadstonee
12-16-2024, 10:39 AM #1

I have configured my i5 6600k with a multiplier of 44x, manual Vcore at 1.290, and LLC set to 5. When running Prime95, the peak Vcore reached was 1.296. During the blend test, the Vcore stabilized around 1.312. Reducing voltage would lower the Vcore further, or switching to LLC 4 would eliminate the 0.016 margin and trigger an error. I found that adjusting the voltage by -40 offset can yield similar results (values between 1.296 and 1.312). Lowering it to 35 causes the maximum to approach 1.328, while going up to 45 removes that precise 0.016 range. There are stories about the i5 6600k reaching 4.4 or 4.5 at lower or standard voltages; I’m cautious about raising it further. So far, temperatures have stayed stable, though stress testing at 4.5 required a voltage increase to 1.36, which felt too high. I value any advice or guidance you can offer.

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_Skyqueen99_
Member
119
12-16-2024, 10:39 AM
#2
Which specific model is your Corsair PSU? The stability of the LLC and offset voltage relies greatly on the quality of your PSU, especially if you have the old CX series that might be causing issues.
For the OC you're trying to achieve an extra 0.016, your CPU might just be from a low yield, but it's not recommended to overclock with a low-quality PSU, so I hope yours isn't from the CX series.
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_Skyqueen99_
12-16-2024, 10:39 AM #2

Which specific model is your Corsair PSU? The stability of the LLC and offset voltage relies greatly on the quality of your PSU, especially if you have the old CX series that might be causing issues.
For the OC you're trying to achieve an extra 0.016, your CPU might just be from a low yield, but it's not recommended to overclock with a low-quality PSU, so I hope yours isn't from the CX series.

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super_gamer1
Junior Member
13
12-16-2024, 10:39 AM
#3
Which specific model does your Corsair PSU have? The stability of the LLC and offset voltage relies greatly on the quality of your power supply, especially if you own the older CX series that might be causing this issue.
For the OC you're trying to achieve an extra 0.016, your CPU might be from a low yield, but it's not recommended to overclock with a low-quality PSU—hopefully yours isn't from the CX series.
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super_gamer1
12-16-2024, 10:39 AM #3

Which specific model does your Corsair PSU have? The stability of the LLC and offset voltage relies greatly on the quality of your power supply, especially if you own the older CX series that might be causing this issue.
For the OC you're trying to achieve an extra 0.016, your CPU might be from a low yield, but it's not recommended to overclock with a low-quality PSU—hopefully yours isn't from the CX series.

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Rucian
Member
142
12-16-2024, 10:39 AM
#4
CX-750. Model 75-001447. Thought it was of decent quality. I can swap it soon. Is the issue with the reliability and lifespan of this model? Should I revert to stock settings until I find a better PSU?
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Rucian
12-16-2024, 10:39 AM #4

CX-750. Model 75-001447. Thought it was of decent quality. I can swap it soon. Is the issue with the reliability and lifespan of this model? Should I revert to stock settings until I find a better PSU?

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Shadowsuns
Member
228
12-16-2024, 10:39 AM
#5
Absolutely, the internal parts of the CX are of low quality, so it's better to revert to stock settings until you find a better PSU. When it comes to PSUs, the manufacturer matters; you can trust Seasonic or Superflower, as some XFX, EVGA, and OCZ models are actually produced by these brands, making them solid choices. Check their selections and choose the one that fits your budget, aiming for at least a 550w model with Bronze+ certification.
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Shadowsuns
12-16-2024, 10:39 AM #5

Absolutely, the internal parts of the CX are of low quality, so it's better to revert to stock settings until you find a better PSU. When it comes to PSUs, the manufacturer matters; you can trust Seasonic or Superflower, as some XFX, EVGA, and OCZ models are actually produced by these brands, making them solid choices. Check their selections and choose the one that fits your budget, aiming for at least a 550w model with Bronze+ certification.

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VDMACHINE
Member
57
12-16-2024, 10:40 AM
#6
Got a EVGA 750 p2 on sale. Hopefully a much better choice?
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VDMACHINE
12-16-2024, 10:40 AM #6

Got a EVGA 750 p2 on sale. Hopefully a much better choice?

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RiceBoi__
Member
64
12-16-2024, 10:40 AM
#7
Yes, the P2 was crafted by Superflower and makes an excellent PSU, go for it.
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RiceBoi__
12-16-2024, 10:40 AM #7

Yes, the P2 was crafted by Superflower and makes an excellent PSU, go for it.

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Alysss
Member
221
12-16-2024, 10:40 AM
#8
Thank you very much for the guidance.
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Alysss
12-16-2024, 10:40 AM #8

Thank you very much for the guidance.