F5F Stay Refreshed Power Users Overclocking Can I increase the speed of my 9900k processor to 5 gigahertz?

Can I increase the speed of my 9900k processor to 5 gigahertz?

Can I increase the speed of my 9900k processor to 5 gigahertz?

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Du_Jus_Oasis
Member
170
06-15-2018, 06:28 AM
#1
Mother Board: Asus Rog Strix Z390-E
Cooler: Corsair H115i Pro
On default configurations (4.7Ghz) using Prime95 for 10 minutes, the 9900k reaches 80-90 degrees. With Cinebench it drops to 70 degrees. Here are the observations about running Prime95. I aim to push it to 5Ghz. Is this a safe approach for my CPU, which already gets quite hot on stock? Please advise.
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Du_Jus_Oasis
06-15-2018, 06:28 AM #1

Mother Board: Asus Rog Strix Z390-E
Cooler: Corsair H115i Pro
On default configurations (4.7Ghz) using Prime95 for 10 minutes, the 9900k reaches 80-90 degrees. With Cinebench it drops to 70 degrees. Here are the observations about running Prime95. I aim to push it to 5Ghz. Is this a safe approach for my CPU, which already gets quite hot on stock? Please advise.

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EaseAce
Member
74
06-19-2018, 06:55 PM
#2
Cinebench version 15 tends to heavily tax the CPU at 5GHz and does not support floating point calculations. I can operate it at 5GHZ with a 1.350 volt configuration in BIOS. All other tests, such as Cinebench version 10, work smoothly at 1.300 volts and 5GHz. Running Prime95 requires 4.6 GHz to function properly, otherwise it crashes. The processor consumes a significant amount of power—over 185 watts just for the CPU, well above 300 watts overall. My cooling setup consists of a 240mm AIO cooler from Enermax paired with Liqmax2 fans from the Corsair ML series.
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EaseAce
06-19-2018, 06:55 PM #2

Cinebench version 15 tends to heavily tax the CPU at 5GHz and does not support floating point calculations. I can operate it at 5GHZ with a 1.350 volt configuration in BIOS. All other tests, such as Cinebench version 10, work smoothly at 1.300 volts and 5GHz. Running Prime95 requires 4.6 GHz to function properly, otherwise it crashes. The processor consumes a significant amount of power—over 185 watts just for the CPU, well above 300 watts overall. My cooling setup consists of a 240mm AIO cooler from Enermax paired with Liqmax2 fans from the Corsair ML series.

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ViiRaL_Hyper
Member
167
06-19-2018, 07:05 PM
#3
I believe that with a better cooler and if you're able to operate at a slightly lower voltage, you won't gain much more performance.
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ViiRaL_Hyper
06-19-2018, 07:05 PM #3

I believe that with a better cooler and if you're able to operate at a slightly lower voltage, you won't gain much more performance.

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mumustrak
Senior Member
729
06-20-2018, 09:59 PM
#4
I have identical components, including the same motherboard and processor.
Prime 95 is a floating point test program that shouldn't run at 5GHz with all-core boost enabled. Only non-floating point applications should use all-core boost. This is why manufacturers include AVX offset in the BIOS, which relates to floating point operations.
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mumustrak
06-20-2018, 09:59 PM #4

I have identical components, including the same motherboard and processor.
Prime 95 is a floating point test program that shouldn't run at 5GHz with all-core boost enabled. Only non-floating point applications should use all-core boost. This is why manufacturers include AVX offset in the BIOS, which relates to floating point operations.

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PetqPqn
Member
68
06-30-2018, 09:32 PM
#5
Which program or stress test should you use to verify the stability of your @5GHz all-core overclock? How can you confirm system stability across all cores during manual overclocking at 5GHz?
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PetqPqn
06-30-2018, 09:32 PM #5

Which program or stress test should you use to verify the stability of your @5GHz all-core overclock? How can you confirm system stability across all cores during manual overclocking at 5GHz?

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iStrafeRunner
Member
169
07-08-2018, 01:25 PM
#6
What is the temperature when the system is idle at a clock speed of 25c? On a CPU-Z CPU benchmark, it typically reaches about 49c to 51c.
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iStrafeRunner
07-08-2018, 01:25 PM #6

What is the temperature when the system is idle at a clock speed of 25c? On a CPU-Z CPU benchmark, it typically reaches about 49c to 51c.

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RobinETmaeva
Junior Member
5
07-12-2018, 05:43 PM
#7
when idle it remains at 35-40c and on cpu-z it's 65-70c... mine is corsair h115i pro 280mm but fans spin at 1200rpm... does it really matter?
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RobinETmaeva
07-12-2018, 05:43 PM #7

when idle it remains at 35-40c and on cpu-z it's 65-70c... mine is corsair h115i pro 280mm but fans spin at 1200rpm... does it really matter?

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dr4gen_sl4y3r
Member
151
07-12-2018, 07:33 PM
#8
Cinebench version 15 tends to heavily tax the CPU at 5GHz and does not support floating point calculations. I can operate it at 5GHZ with a 1.350 volt configuration in BIOS. All other tests, such as Cinebench version 10, work smoothly at 1.300 volts and 5GHz. Running Prime95 requires 4.6 GHz to function properly, otherwise it crashes. The power consumption is substantial, exceeding 185 watts just for the processor, well surpassing 300 watts overall.
My cooling setup consists of a 240mm AIO cooler from Enermax, paired with Liqmax2 units and Corsair ML series fans.
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dr4gen_sl4y3r
07-12-2018, 07:33 PM #8

Cinebench version 15 tends to heavily tax the CPU at 5GHz and does not support floating point calculations. I can operate it at 5GHZ with a 1.350 volt configuration in BIOS. All other tests, such as Cinebench version 10, work smoothly at 1.300 volts and 5GHz. Running Prime95 requires 4.6 GHz to function properly, otherwise it crashes. The power consumption is substantial, exceeding 185 watts just for the processor, well surpassing 300 watts overall.
My cooling setup consists of a 240mm AIO cooler from Enermax, paired with Liqmax2 units and Corsair ML series fans.