Hey everyone! I recently upgraded to a Ryzen 9700X paired with a Thermalright Phantom Spirit 120 cooler, moving on from an i7 7820X with a DeepCool Assassin III. I've been tuning the Precision Boost Overdrive (PBO) and memory timings and everything feels solid performance-wise. However, I'm concerned about the temperatures: my CPU idles around 47-50°C and draws about 28W at idle. During gaming (specifically The Finals), it hits around 70°C. Coming from an older 200W CPU that idled at 35°C and gamed at 54-60°C, I'm wondering if something's off here. I've noticed that the cores at idle are within the expected range of 31-36°C, but the "CPU IOD" is the hottest component at 48°C. I followed a voltage adjustment guide because my Gigabyte B850 EAGLE was running high voltages by default. Could someone take a look at my voltage settings in this image? (link) Also, is it unreasonable to expect lower temperatures from the Phantom Spirit? What kind of idle temperatures should I expect with a 9700X and this cooler while having PBO active? For context, my RAM is running at 6000 in 1:1 mode with an FCLK of 2000.
2 Answers
That looks pretty typical for AMD CPUs. They tend to draw higher power at idle compared to Intel chips, resulting in those idle temps hovering around 40-50°C. But under load, Intel usually ramps up higher. So, it’s all good!
Honestly, those temps don’t sound too worrisome. As long as your load temps are in the 70°C range, which is pretty normal, the idle temps around 47°C are nothing to stress over. It's just how Ryzen chips run!

Awesome, thanks for breaking that down! Quick question—do you think a VDDIO_MEM setting of 1.35V is safe? I saw it was auto-set to 1.4V earlier.