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Why can't I overclock my AMD CPU's coreclock and still have boost clock on?

Actual_Criminal
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I have a 5th gen Ryzen 9 AMD CPU (specs in signature) and I have boosted all 16 cores to 4.1 GHz, however this takes off the boost clock.

 

What is the reason for this? As long as voltage is safe and temps are safe, surely it should be able to do both?

CPU: AMD Ryzen 9 16-core 5950X

CPU Cooler: Artic Freezer 2 AIO 360mm Radiator

Motherboard: Asus ROG Strix X570-F Gaming

Memory: 32GB (2x16GB) G.Skill Trident Z Royal 3600 MHz CL16

GPU: Nvidia RTX 4080 MSI Ventus 3X 16GB GDDR6X

Storage OS: 500GB Samsung 980 Pro Gen4 M.2 NVme SSD

Storage Games: 2TB Corsair MP600 Gen4 M.2 NVme SSD + 2TB Samsung 860 Evo SSD + 500GB Samsung 850 Evo SSD

Storage Misc: 2TB Seagate Barracuda Compute 7200 RPM

PSU: Corsair HX Platinum 1000W 80+

Case: Fractal Design Meshify S2 ATX Mid Tower

Monitor: Dell Alienware AW3423DW 175Hz 1ms 3440p (widescreen) HDR400 OLED panel 34"  + Asus PG258Q 240Hz 1ms 1080p G-Sync TN panel 24.5"

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6 minutes ago, Actual_Criminal said:

What is the reason for this? As long as voltage is safe and temps are safe, surely it should be able to do both?

Core clock multiplier OC overrides both base and boost clock. Idle behaviour can differ but under load it will lock to whatever you set it to. You use PBO otherwise.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Posted
8 minutes ago, Actual_Criminal said:

I have a 5th gen Ryzen 9 AMD CPU (specs in signature) and I have boosted all 16 cores to 4.1 GHz, however this takes off the boost clock.

 

What is the reason for this? As long as voltage is safe and temps are safe, surely it should be able to do both?

Its just a rule set that AMD has put in place for that model.

Defined Factory Speeds under certain conditions.

Maximums - Asus Z97-K /w i5 4690 Bclk @106.9Mhz * x39 = 4.17Ghz, 8GB of 2600Mhz DDR3,.. Gigabyte GTX970 G1-Gaming @ 1550Mhz

 

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