F5F Stay Refreshed Hardware Desktop CPU core ratio is set within the BIOS settings.

CPU core ratio is set within the BIOS settings.

CPU core ratio is set within the BIOS settings.

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SloPeZ
Junior Member
33
12-30-2020, 05:43 PM
#1
I own a Ryzen 5900X paired with an Asus ROG STRIX X570-E gaming Wi-Fi II motherboard. The issue is the CPU core ratio is pre-set for auto and I can’t adjust it at all. I’m unsure why I can’t change the settings, even though I know about voltage adjustments. I’m using the latest BIOS version.
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SloPeZ
12-30-2020, 05:43 PM #1

I own a Ryzen 5900X paired with an Asus ROG STRIX X570-E gaming Wi-Fi II motherboard. The issue is the CPU core ratio is pre-set for auto and I can’t adjust it at all. I’m unsure why I can’t change the settings, even though I know about voltage adjustments. I’m using the latest BIOS version.

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What_The_Frick
Junior Member
10
12-31-2020, 01:20 AM
#2
Undervolt appears under the Curve Optimiser area; avoid changing the core ratio or BCLK. For Asus BIOS it’s unclear, but a "Overclocking" option likely exists for adjusting voltages.
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What_The_Frick
12-31-2020, 01:20 AM #2

Undervolt appears under the Curve Optimiser area; avoid changing the core ratio or BCLK. For Asus BIOS it’s unclear, but a "Overclocking" option likely exists for adjusting voltages.

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datmando
Member
64
01-03-2021, 02:33 PM
#3
You don't require PBO2; it mainly lowers temperatures, but it doesn't contribute much to saving energy.
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datmando
01-03-2021, 02:33 PM #3

You don't require PBO2; it mainly lowers temperatures, but it doesn't contribute much to saving energy.

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TigerTank25
Junior Member
13
01-04-2021, 05:57 AM
#4
Adjusting voltage manually will remain similar, yet significantly less efficient than using CO. If you aim to use less power and control PPT as desired, why would you need a 12-core processor when you can achieve savings?
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TigerTank25
01-04-2021, 05:57 AM #4

Adjusting voltage manually will remain similar, yet significantly less efficient than using CO. If you aim to use less power and control PPT as desired, why would you need a 12-core processor when you can achieve savings?

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Selrahcc
Member
224
01-04-2021, 11:12 PM
#5
I won't let it happen because I can adjust the clock speed and voltage manually. The 4.7 Ghz isn't that important for games. I aim for a speed around 4-4.2 Ghz to save power without losing performance. This CPU should handle about 1.2V and 4.2 Ghz smoothly, unlike the current setup which runs at 1.44V and 4.6 Ghz and struggles after PBO2 undervolt. PBO2 just runs at the same voltage but with higher clock speeds. I don't see a need to use this CPU while gaming at around 120W when it can handle it at about 60W. The GPU normally draws up to 280W, but it can still run efficiently or even save around 100W. If I reduce power consumption by that much over time, the difference will become noticeable after a few months.
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Selrahcc
01-04-2021, 11:12 PM #5

I won't let it happen because I can adjust the clock speed and voltage manually. The 4.7 Ghz isn't that important for games. I aim for a speed around 4-4.2 Ghz to save power without losing performance. This CPU should handle about 1.2V and 4.2 Ghz smoothly, unlike the current setup which runs at 1.44V and 4.6 Ghz and struggles after PBO2 undervolt. PBO2 just runs at the same voltage but with higher clock speeds. I don't see a need to use this CPU while gaming at around 120W when it can handle it at about 60W. The GPU normally draws up to 280W, but it can still run efficiently or even save around 100W. If I reduce power consumption by that much over time, the difference will become noticeable after a few months.

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Private_HAWK
Member
132
01-12-2021, 07:52 AM
#6
In short, you just need to fix a fixed static frequency with low voltage, keeping all modes active while idle use should work well. Share the BIOS screenshots and let me know your target settings—test frequencies 1, 1.1, and 1.2v—and I’ll help pick the best options for both performance and efficiency.
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Private_HAWK
01-12-2021, 07:52 AM #6

In short, you just need to fix a fixed static frequency with low voltage, keeping all modes active while idle use should work well. Share the BIOS screenshots and let me know your target settings—test frequencies 1, 1.1, and 1.2v—and I’ll help pick the best options for both performance and efficiency.

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ddemon10
Junior Member
5
01-13-2021, 01:22 PM
#7
CPU core allocation can't be adjusted manually—it's set automatically. I need it to handle demanding tasks like 1.2V to 2.2GHz even with just one core.
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ddemon10
01-13-2021, 01:22 PM #7

CPU core allocation can't be adjusted manually—it's set automatically. I need it to handle demanding tasks like 1.2V to 2.2GHz even with just one core.

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Trentqn
Member
150
02-02-2021, 06:42 AM
#8
They handle the timing and power settings automatically. You don’t need to adjust them yourself unless you’re just playing the game. If the chip runs under 100W, you can safely set a lower limit like 80W.
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Trentqn
02-02-2021, 06:42 AM #8

They handle the timing and power settings automatically. You don’t need to adjust them yourself unless you’re just playing the game. If the chip runs under 100W, you can safely set a lower limit like 80W.

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TOMASpires
Member
65
02-08-2021, 08:10 AM
#9
Power restrictions can influence clock speed and may drop well below 4 GHz. I could try adjusting the Windows settings to manage CPU power, but it wouldn’t be as effective since the CPU starts around 2 GHz even with demanding tasks.
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TOMASpires
02-08-2021, 08:10 AM #9

Power restrictions can influence clock speed and may drop well below 4 GHz. I could try adjusting the Windows settings to manage CPU power, but it wouldn’t be as effective since the CPU starts around 2 GHz even with demanding tasks.

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byV3rox_
Member
236
02-17-2021, 01:14 AM
#10
Unless you reduce the max PPT below 60W, I doubt heavily threaded jobs will face major issues. A single core requires around 10W or less. I’m still not clear on your exact goals with these adjustments.
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byV3rox_
02-17-2021, 01:14 AM #10

Unless you reduce the max PPT below 60W, I doubt heavily threaded jobs will face major issues. A single core requires around 10W or less. I’m still not clear on your exact goals with these adjustments.

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