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Clock speed dropping

TerminalLance98
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Go to solution Solved by Morgan MLGman,
4 minutes ago, TerminalLance98 said:

It's a Asus M5A78L-M plus. The temp gets up to 48c under load, but I can't seem to find the max temp rating for it. And I haven't seen it happen much at stock speeds.

1

It's not your CPU overheating, it's this part that delivers power to it that overheats because it has no radiators on it and it's not a good VRM as it's a budget-oriented board.
eK8flJ3.jpg

By reducing voltage supplied to the CPU it cools down, but reducing voltage means reducing clock speeds so this is why you experience performance drops under load.

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So I've done some research and all I can find is that cpu clock speed dropping under load is caused usually by overheating. I have a FX 6300 (yes I need an upgrade lol) oc to 4.2 GHz with the reference at 200. It's still fairly stable at 4.5, but 4.2 seems to be the best. Idle temp is usually 20c and under load it barely breaks 40. But for some reason the clock speed alters between 3.0 and 4.2 under 100% load using prime95. Variations are seen during gaming as well, causing severe fps drops. Any ideas on the culprit? 

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Knowing the FX-line quite well, it's most likely your motherboard's VRM section overheating and throttling the CPU to keep the temperatures of VRM modules in check.
To confirm this - what's your motherboard? Also, do the clock speed drops also happen at stock speeds?

EDIT: I just went into your profile, it's definitely your motherboard's VRM. Do not overclock on this board, it's not good-enough for that.

CPU: AMD Ryzen 7 5800X3D GPU: AMD Radeon RX 6900 XT 16GB GDDR6 Motherboard: MSI PRESTIGE X570 CREATION
AIO: Corsair H150i Pro RAM: Corsair Dominator Platinum RGB 32GB 3600MHz DDR4 Case: Lian Li PC-O11 Dynamic PSU: Corsair RM850x White

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VRM on the motherboard overheating

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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What motherboard and voltage?

Ryzen 5 1600 @ 3.9 Ghz  | Gigabyte AB350M Gaming 3 |  PaliT GTX 1050Ti  |  8gb Kingston HyperX Fury @ 2933 Mhz  |  Corsair CX550m  |  1 TB WD Blue HDD


Inside some old case I found lying around.

 

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Just now, Morgan MLGman said:

Knowing the FX-line quite well, it's most likely your motherboard's VRM section overheating and throttling the CPU to keep the temperatures of VRM modules in check.
To confirm this - what's your motherboard? Also, do the clock speed drops also happen at stock speeds?

It's a Asus M5A78L-M plus. The temp gets up to 48c under load, but I can't seem to find the max temp rating for it. And I haven't seen it happen much at stock speeds. 

 

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1 minute ago, bleedblue said:

What motherboard and voltage?

M5A78L-M with the vcore at 1.404 V

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1 minute ago, TerminalLance98 said:

It's a Asus M5A78L-M plus. The temp gets up to 48c under load, but I can't seem to find the max temp rating for it. And I haven't seen it happen much at stock speeds. 

 

Is that CPU temp or VRM temp?

That mobo isn't really meant for OC'ing.

Ryzen 5 1600 @ 3.9 Ghz  | Gigabyte AB350M Gaming 3 |  PaliT GTX 1050Ti  |  8gb Kingston HyperX Fury @ 2933 Mhz  |  Corsair CX550m  |  1 TB WD Blue HDD


Inside some old case I found lying around.

 

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3 minutes ago, Morgan MLGman said:

Knowing the FX-line quite well, it's most likely your motherboard's VRM section overheating and throttling the CPU to keep the temperatures of VRM modules in check.
To confirm this - what's your motherboard? Also, do the clock speed drops also happen at stock speeds?

EDIT: I just went into your profile, it's definitely your motherboard's VRM. Do not overclock on this board, it's not good-enough for that.

Yeah I was afraid if that. Thanks guys for the quick replies. Once I get the paychecks in I'm definitely upgrading to hopefully an 8700k with an Asus prime or something similar. 

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4 minutes ago, TerminalLance98 said:

It's a Asus M5A78L-M plus. The temp gets up to 48c under load, but I can't seem to find the max temp rating for it. And I haven't seen it happen much at stock speeds.

1

It's not your CPU overheating, it's this part that delivers power to it that overheats because it has no radiators on it and it's not a good VRM as it's a budget-oriented board.
eK8flJ3.jpg

By reducing voltage supplied to the CPU it cools down, but reducing voltage means reducing clock speeds so this is why you experience performance drops under load.

CPU: AMD Ryzen 7 5800X3D GPU: AMD Radeon RX 6900 XT 16GB GDDR6 Motherboard: MSI PRESTIGE X570 CREATION
AIO: Corsair H150i Pro RAM: Corsair Dominator Platinum RGB 32GB 3600MHz DDR4 Case: Lian Li PC-O11 Dynamic PSU: Corsair RM850x White

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