Is it typical for this Ryzen 7 7700 to show high idle temperatures and low performance under load?
Is it typical for this Ryzen 7 7700 to show high idle temperatures and low performance under load?
I recently changed my case and CPU cooler from a Thermalright Peerless Assassin 120 SE to a Thermalright Grand Vision 240mm AIO. I’m seeing idle temperatures in the high 40s with HWMonitor, dropping to low 50s even when my CPU usage is under 3% in Task Manager. This was unusual with my previous cooler. My new AIO is connected to all the correct ports on my motherboard, set to full speed and PWM mode, but it hasn’t improved the situation compared to default settings.
I’ve also noticed slower load times when launching applications and noticeable stuttering. I stress tested my CPU with CPU-Z and Cinebench, and it only exceeds 60 degrees under maximum load, just a slight increase from idle. I’ve verified the cooler sticker is still there, replaced thermal paste multiple times using products from the AIO and Arctic MX-4, re-seated my CPU, and even adjusted the tube positions.
I’ve set the AIO cooler fans to exhaust and the other three stock fans in my case to exhaust as well. I’ve bought two reverse blade fans for the bottom of my case to help balance airflow and hopefully resolve the high idle temps.
My system specs include:
ASRock B650M Pro RS non-WIFI
Ryzen 7 7700
RTX 2070 SUPER
Thermalright Grand Vision 240mm AIO
Corsair Vengeance DDR5 CL30 2x16GB 6000MHz
Samsung 990 PRO 1TB SSD
CiT DS240 Case
There isn't a standard idle temperature to focus on.
The actual idle temperature changes a lot depending on the surrounding environment, cooling setup, fan speed and size, and dust levels.
That's why there are no typical idle temperature charts in reviews—only under load conditions.
For example, the R7 7700 review temperature chart is available here:
https://www.techpowerup.com/review/amd-r...-x/23.html
Keep in mind, you can't achieve temperatures below the ambient air temperature.
Idle temperatures are irrelevant because even the best cooling system can maintain the CPU or GPU near ambient levels.
What really matters is keeping the temperatures under load below 80°C, which indicates your cooling solution is working well.
If your CPU reaches its maximum temperature at 60°C during heavy use, and you expect around 68°C under normal conditions, then this clearly indicates the effectiveness of your Thermalright AIO cooler.
Regarding idle temperatures, it doesn't really matter.
For instance, my processor is currently running at 53°C while the Thermalright Royal Pretor 130 Black CPU cooler keeps it down. It also performs better than the R7 7700 compared to the R7 9800X3D, handling nearly double the TDP (65W versus 120W). I’m not concerned about idle temps. At load, temperatures reach about 83°C for my chip.
Where is your AIO placed? On the side?
To improve airflow, you could position the side fans as intakes and add some bottom intake fans too. Keep the top and rear fans as exhausts.
Since your case is compact, airflow will be inferior to standard designs with front intake fans. However, applying strong negative pressure can help achieve the lowest temperatures.
The trade-off is increased dust intake.
In my previous builds (with specs and photos in my profile), I’ve used a slight negative pressure setup for better cooling.