14700K remains stable at 5.6ghz without load, but performance decreases to 5ghz or lower after stress testing?
14700K remains stable at 5.6ghz without load, but performance decreases to 5ghz or lower after stress testing?
Hi everyone, I've tried all the usual fixes. The CPU temperatures stay under 60°C, but during stress tests it drops sometimes below 5GHz. My XTU score is only 9k, while others at 5.6GHz with an AIO cooler get around 13k. It seems there might be an issue with voltage or a blockage preventing the CPU from reaching stable 5.6GHz. I don’t want to overclock and just want the advertised speeds I paid for.
Details:
PSU: Gigabyte 850w Gold UD
Mobo: Gigabyte B760M D3HP Rev 1.0
CPU Cooler: MSI Water Cooler AIO 240
BIOS is up to date. Feel free to ask if you have more questions.
Welcome to the forums, newcomer!
MSI is the manufacturer of the cooler, and the 240mm refers to the radiator size. MSI has experienced several used AIO models... which model do you own? How is the AIO installed in your setup?
The BIOS is currently updated to the latest version.
For better accuracy, please specify your BIOS version rather than assuming it's up to date.
What is the case model?
Temperatures exceed 60°C, but during stress tests the CPU frequency occasionally drops below 5GHz.
How are you tracking temperatures? Which benchmarking software are you using to test the system?
The B760 motherboards lack full overclocking capabilities unlike the Z790 models. As demands rise, performance will decrease. The PL1 and PL2 turbo power thresholds are determined by HWiNFO. By default, the CPU throttles under full load stress testing. Adjusting these limits may improve results. Poor cooling for voltage regulators can lead to thermal or current throttling. B760 boards aren't ideal for maximizing performance from a 14700K processor. HWiNFO should also display the default turbo ratios based on active cores.
I understand that the b760 isn't the top choice, but I'm only interested in the speeds I paid for. Since I don't plan to overclock an already very fast CPU, I thought the b760 would suffice. All BIOS settings are set to AUTO. I plan to take photos with my phone and, once you see them, you can let me know what adjustments to make because there are countless options and I don't want to experiment without knowing.
MSI MAG CORELIQUID A13 240 is installed at the top of the case, with fans pulling air in from inside. The BIOS version is F7a. This setup uses the first player Miku midi tower. I'm tracking temperatures with Intel XTU and a hardware monitor. The benchmark results show a score of 9k for this configuration, while other setups with the same CPU achieve 13k. Cinebench data is also available.
The 56 multiplier appears to function only when one core is running. With additional cores engaged, Intel adjusts the maximum multiplier to reduce performance. You can only circumvent this restriction with a motherboard that includes the Z790 chipset. Boards using the B760 chipset do not offer this capability. Running all cores at 5.6 GHz when fully active is regarded as overclocking.
When the BIOS sets turbo power limits to their standard defaults, the CPU may struggle to sustain peak speeds during heavy workloads. You purchased a 125 Watt CPU, not a 5.6 GHz one. Typically, you’ll need to raise the turbo power settings to exceed this capacity. The motherboard’s voltage regulators should accommodate more than 125W, though long-term performance may be affected. A 14700K requires substantially more than 125W to operate at full speed continuously. Likely, it demands around 250W under full load tasks such as Cinebench.
Other users probably used a Z-series board and significantly increased the turbo power limits without manual adjustment. B760 boards generally stick to Intel’s default turbo values.
The screenshot indicates the turbo power limits have been raised to 375W, which is acceptable. The maximum multiplier when all 8 P cores are engaged is 55, and the E core's limit is 43. When testing Cinebench, open HWiNFO and monitor the Limit Reasons data to identify why the CPU isn't operating at full capacity. Edit - Your motherboard's IccMax is set to 160.0 A, which may not be sufficient. Keep an eye out for EDP throttling.