FX8350 experienced a clock speed reduction from 4GHz to 1.6GHz.
FX8350 experienced a clock speed reduction from 4GHz to 1.6GHz.
So basically yesterday I upgraded from an old AMD Phenom II X6 1055T (OC from 2.8GHz to 3.2GHz) to an older FX8350 processor. After trying overclocking, I stuck it at base settings in Task Manager, which usually hovers around 4.4-4.5GHz. Playing any game is okay except for Rainbow Six Siege. I see my frame rate drops between 120-170 FPS in 1080p lowest settings, then it falls to 1.6GHz every few seconds and jumps back up, causing frame drops and input lag before it fully recovers. This makes the game unplayable, especially for Siege. I’m not sure what’s behind this issue since other games work fine. Anyone know what might be causing it?
I don't have real-time information about your current setup. Could you tell me which CPU cooler you're using?
CPU activity remains elevated, with temperatures rising and GPU demand increasing during performance dips.
The H7 falls short when paired with the FX-8350 under boost conditions. Unlike Intel, which increases all cores to their maximum capacity when sufficient power is available, the FX chips tend to throttle once a specific temperature is reached—typically around 75°C—restarting to the lowest clock speed. Try turning off boost in the BIOS settings. The processor has a maximum power draw of 125 Watts at standard speeds, but at full boost it can easily reach 180 to over 200 Watts. I built two systems a few years back and found that a 120 mm AIO with optimized pressure fans running at full speed should suffice. Consider upgrading to a 240 mm AIO or a quieter model like the Noctua NH-D14, D15, or a Dark Rock Pro 4 for better performance. Essentially, this chip behaves similarly to the old ATi Radeon 2900—high power consumption but limited real-world efficiency.
Also verify your temperatures during gameplay. If the CPU exceeds 70°C, there may be an issue. Also ensure the thermal paste applied properly. As a precaution, increase the cooler's fan speed to maximum.