The RTX3090 requires a lot of power. 🔋 750W PSU might not be enough.
The RTX3090 requires a lot of power. 🔋 750W PSU might not be enough.
Intel i5-7600K with MSI motherboard automatically overclocking to 4GHz. MSI H110 PC MATE 2x8GB Crucial Ballistix LT Sport 2400MHz RTX 3090 Palit GAMEROCK Dark Base Pro 900 (Orange) Toshiba 250GB 2.5" Drive - Game Drive Crucial MX200 250GB 2.5" SSD - Boot Drive PSU Cooler master V750 (750W) semi-modular. Temperatures hover near 72°C, but under Dying Light 2 at default settings the GPU draws about 420W. After some time the system powers off and restarts. This suggests PSU protection triggered. Notably, other titles like DOTA 2, CSGO, Elden Ring or simulations such as Time Spy Extreme don’t exhibit this behavior. Could it be game-related spikes? I noticed shutdowns especially at 2000MHz. Reducing clock speed sliders to -500 helped, but lowering power limits to 75% or 50% didn’t stop it. Would a 1000W or 1200W CPU upgrade be sufficient to avoid this issue?
I think performance will depend on individual parts. You might manage with your present PSU by turning off the CPU overclock. There aren't many strong high-wattage choices for SFF builds, but someone could fit a 3090 in a compact case. For a typical desktop, a 1000 or 1200 watt power supply works fine. Don't stress about long-term compatibility—we can't predict the future. Edit: I was surprised your CPU isn't limiting the GPU...
You're running into a tight spot with that PSU. I suggest lowering the voltage or reducing its power usage. Maybe both options. Let me know if you're using the 3090 for anything other than gaming—an i5 7600K isn't equipped to handle it well, creating a significant performance gap. Depending on the workload, 30 series cards can cause huge power spikes even if they're fast. These brief surges are enough to stress your PSU. It seems this might be the issue you're facing.
Basically you are running that system on the edge. The reason the other games havent pushed the psu beyond it's limit yet is because they are less intensive or dont use the whole system fully at a time like 3d mark. elden ring is also a weird case because it's 60fps locked so your 3090 is basically chilling playing that game. However dying light is an unlocked game so it can push a 3090 fully and then your psu simply throws in the towel. Also any reason for a 3090 and a 7600k? That cpu is severly limiting your card + the whole other bunch of issues like stuttering due to being a pure 4 core. As for psu currently there is a deal on the hx(I) series of the 1000w and 1200w unit.
Absolutely. There should definitely be more than just a few options, right? I’d also consider the current market rates.
My CPU is clearly limiting performance, particularly in tougher titles. However, for 1080p Dying Light 2 it's handling things okay. Interestingly, crashes appear only when ray tracing is active. If ray tracing is disabled, the game runs smoothly at 99% usage with 2000MHz without issues. So it's likely the card is being stressed at 1080p Ultra with 120-140 fps.
To address your queries: 1. Lowering the clock speed definitely improved things and likely cut power usage to around 350 watts. 2. The performance is actually enhancing the games I play, even though it’s demanding full CPU capacity. The card was intended as a gift for my sister who works on VR development in Unreal Engine 5, so it’s perfectly in place. It seems the right wattage will let her use it optimally.
It looks like the issue might be linked to Raytracing or running the game on an ultra configuration. My system has a 7600k and I recently got a used 3090 as a gift. I'm just using it now and planning to pass it on. Do you think a 1000W power supply would handle any spikes? Also, are you interested in the deal details? Europe?
Rayteacing relies on GPU tensor cores which demand higher power usage. Raytracing also adds extra strain on the CPU, worsening the bottleneck and increasing power consumption during rendering. To manage this, adjust the curve optimizer in MSI Afterburner and lower the voltage while pushing the curve to a frequency where the card won’t exceed 350W. I’m using a 5900x, 3080, and a 750W PSU. I tweak settings to keep the GPU at 300W max at 1980MHz with default memory speeds. Avoid running the PSU near its full rating, as this shortens its lifespan and raises failure chances. Calculate total component power at peak load, add a 30% buffer, and select the PSU that fits.