The GPU experiences power reductions during intense CPU tasks — it seems the issue might lie with the power supply unit.
The GPU experiences power reductions during intense CPU tasks — it seems the issue might lie with the power supply unit.
Hello, because of a problem with my GPU I’ve been conducting extensive tests and observed that the GPU power consumption would decrease whenever my CPU faced heavy workloads.
I was able to replicate the issue in Furmark.
Launch a Furmark Test: The GPU consumes the maximum power as advertised on the board partners website – 320W
Activate Furmarks CPU Burner across all cores: the GPU usage drops to around 200W
I believe the problem may be connected to an issue with my PSU, though I’m uncertain about the exact cause and how to further investigate.
System Specifications
Motherboard: ASRock B550 Taichi
CPU: Ryzen 7 5800X
GPU: RTX 4080
RAM: 4 x 16GB 3200MHz
Storage: 4 x SSD, 1 x HDD
Cooling: 5 Case Fans 140mm, 2 CPU Fans 120mm
PSU: Corsair RM850e
In theory, this setup should stay under the PSU’s 850W limit by more than 150 watts. The PSU was purchased about a year ago.
CPU and GPU are not overclocked at all.
Thank you in advance for your assistance.
Welcome to the forums, newcomer! I believe the problem might be connected to an issue with my PSU, though I'm uncertain about the exact cause or how to investigate it further.
In theory, this should exceed the 850W limit of that PSU by more than 150 watts, and the unit was purchased about a year ago.
If you suspect the PSU is responsible, it would be wise to obtain a more reliable PSU with slightly higher power capacity and test if the issue continues.
Motherboard: ASRock B550 Taichi
BIOS version for your motherboard?
RAM: 4 x 16GB 3200MHz
Do you have a link to the RAM kit used?
Thank you for your response.
I recently placed an order for a brand new Seasonic Focus GX ATX 3.0 1000W, as Amazon provided me with a full refund for my previous PSU, leaving no doubt about the timing—either tomorrow or Monday.
The BIOS version is P3.40.
I have installed two sets of this RAM:
https://www.corsair.com/de/de/p/mem...00...m2e3200c16
These were not purchased simultaneously, but they share the same chips; I verified that.
What matters is how your PC handles your tasks.
Synthetic tests are useful but not directly applicable to your actual work.
Applications rely on CPU and GPU power, which may not always run together.
You’ll encounter a single constraint—either CPU or GPU.
I’m unlikely to notice any change with the new Seasonic 1000w; it’s a great PSU.
It will support using very powerful graphics cards in the future.
Thank you for your response. I hadn't considered that aspect before. After additional testing, it appears the issue is related to a CPU bottleneck. I will still replace the PSU, though it seems to be functioning properly. The graphics card will proceed to an RMA due to consistently high hotspot temperatures—around 111-112°C—and increased fan speeds every few seconds on default settings. This was the main concern during my evaluations. When I purchased the card about 1.5 years ago, the hotspot temperature was roughly 20°C lower, indicating a potential problem.
Assuming that CPU is just a typo:
GPU temperature in MSI Afterburner is 77°C
I do not know what kind of power setting you are talking about. I haven't found one in msi afterburner and also not in the Inno3D utility. There is also no Bios Switch on the Card
Card is a INNO3D GeForce RTX 4080 16GB iCHILL X3