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post #1 of 5 (permalink) Old 01-22-2020, 03:40 PM - Thread Starter
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Electrical Specifications

https://www.intel.com/content/dam/ww...heet-vol-1.pdf


Table 5-9. Processor Absolute Minimum and Maximum Ratings
-Here we see Vccio Max as 1.35v


Scroll down to Table 5-11. Voltage Specification
-Vccio (IO voltage supply input) the max is 1.057v


After going through the forum, I've read many overclocking and going up to 1.35v for Vccio and doing just fine. I've also read some of you experiencing possible degradation just going above 1.2v and advising to stay below that.



Could someone confirm what Intel's spec sheet is saying for safe max Vccio? Also, what do you guys consider to be a safe daily Vccio voltage?


Thanks!
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post #2 of 5 (permalink) Old 01-22-2020, 04:38 PM
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Section 5.4:

"he following table ( 5-9) specifies absolute maximum and minimum ratings. At conditions outside functional operation condition limits, but within absolute maximum and minimum ratings, neither functionality nor long-term reliability can be expected."

This refers to the absolute maximum limits in table 5-9 that are outside of the *operational* limits in table 5.11 as distinguished in the text I quoted.

FDR4-8086k
(23 items)
CPU
8086k 5.1/4.8 GHz @ 1.28v, 5.2/4.9 GHz @ 1.326v (AVX 0)
Motherboard
Gigabyte Aorus Master
GPU
Asus GTX 2070 Super A8GB
RAM
64GB Trident Z RGB 3200 CL14 @3600 Cl16
Hard Drive
Samsung 850 EVO 1TB
Hard Drive
Western Digitial Caviar Black 2 TB in USB 3.0 enclosure
Hard Drive
Western Digital Black 6 TB
Hard Drive
Western Digitial Caviar Green in USB 3.0 enclosure
Hard Drive
Samsung 960 Pro 512 GB
Hard Drive
Samsung 860 EVO 1TB
Power Supply
Seasonic Prime Ultra Titanium 750W
Cooling
Noctua NH-D15 (only middle NF-A15 Chromax)
Cooling
4 x Noctua NF-A14 Chromax black swap
Cooling
Noctua NF-F12 Chromax black swap
Case
Fractal Design R4
Operating System
Windows 10 Pro 64 bit
Monitor
Eizo CG2730
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ViewSonic VP2768
Keyboard
Cooler Master Quickfire Rapid TKL
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perixx dx-2000
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post #3 of 5 (permalink) Old 01-22-2020, 04:45 PM - Thread Starter
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Quote: Originally Posted by GeneO View Post
Section 5.4:

"he following table ( 5-9) specifies absolute maximum and minimum ratings. At conditions outside functional operation condition limits, but within absolute maximum and minimum ratings, neither functionality nor long-term reliability can be expected."

This refers to the absolute maximum limits in table 5-9 that are outside of the *operational* limits in table 5.11 as distinguished in the text I quoted.
So would you consider Vccio 1.35 safe for daily use? What do you make of the second table where it lists 1.057v for Vccio?
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post #4 of 5 (permalink) Old 01-22-2020, 04:46 PM
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Quote: Originally Posted by glocked89 View Post
So would you consider Vccio 1.35 safe for daily use? What do you make of the second table where it lists 1.057v for Vccio?
No. Did you read the above?

The second table is operational limits. If you stay withing them you are good and operating within Intel specs. Outside of those operational limits you can experience degradation that will shorten the lifetime of the processor. Outside of the absolute limits probably will result in rapid deterioration. So do you want to run vccio at the edge of rapid degradation 24x7?

Absolute means don't go there.

FDR4-8086k
(23 items)
CPU
8086k 5.1/4.8 GHz @ 1.28v, 5.2/4.9 GHz @ 1.326v (AVX 0)
Motherboard
Gigabyte Aorus Master
GPU
Asus GTX 2070 Super A8GB
RAM
64GB Trident Z RGB 3200 CL14 @3600 Cl16
Hard Drive
Samsung 850 EVO 1TB
Hard Drive
Western Digitial Caviar Black 2 TB in USB 3.0 enclosure
Hard Drive
Western Digital Black 6 TB
Hard Drive
Western Digitial Caviar Green in USB 3.0 enclosure
Hard Drive
Samsung 960 Pro 512 GB
Hard Drive
Samsung 860 EVO 1TB
Power Supply
Seasonic Prime Ultra Titanium 750W
Cooling
Noctua NH-D15 (only middle NF-A15 Chromax)
Cooling
4 x Noctua NF-A14 Chromax black swap
Cooling
Noctua NF-F12 Chromax black swap
Case
Fractal Design R4
Operating System
Windows 10 Pro 64 bit
Monitor
Eizo CG2730
Monitor
ViewSonic VP2768
Keyboard
Cooler Master Quickfire Rapid TKL
Mouse
Logitech G305
Mouse
perixx dx-2000
Audio
On Board ALC1220-VB/ESS SABRE 9118 DAC
Audio
Vanatoo Transparent One
▲ hide details ▲

Last edited by GeneO; 01-22-2020 at 04:52 PM.
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post #5 of 5 (permalink) Old 01-22-2020, 04:56 PM - Thread Starter
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Quote: Originally Posted by GeneO View Post
No. Did you read the above?

The second table is operational limits. If you stay withing them you are good and operating within Intel specs. Outside of those operational limits you can experience degradation that will shorten the lifetime of the processor. Outside of the absolute limits probably will result in rapid deterioration. So do you want to run vccio at the edge of rapid degradation 24x7?
Yes. I did read above.

No I don't. Personally I keep it at 1.0v, but for a higher mesh clock I need at least 1.2v.

So pretty much anyone running past 1.057v but below 1.35v could experience degradation?

Last edited by glocked89; 01-22-2020 at 05:03 PM.
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