What PSU Do I Need? PSU Wattage Guide for Every GPU (2026)
Quick answer: Add your CPU TDP and GPU TDP, tack on about 90W for the motherboard, RAM, storage, and fans, then multiply by 1.25 for headroom. For most 2026 gaming builds that lands you on a quality 650W or 750W unit. An RTX 5090 build needs 1000W, while a budget RTX 5060 or RX 9060 is fine on 550W.
Picking a power supply is the part of a build people overthink in one direction and underthink in the other. They will agonize over whether 750W is "enough," then buy a no-name unit to save twenty bucks. The wattage is the easy part. Let's nail it down so you can stop guessing.
The Only Formula You Need
Your total power draw is basically just your two hungriest parts plus some odds and ends:
CPU TDP + GPU TDP + ~90W (motherboard, RAM, SSD, cooler, fans) = total draw
Then you want headroom on top of that. A PSU is happiest and most efficient running at 50-80% of its rated capacity, not pinned at 100%. So we take that total and add 25%, then round up to the nearest real PSU size. That is exactly how our PSU Calculator does it, and it is the same math the numbers below are built on.
Why the headroom? Two reasons. First, efficiency and noise - a PSU loafing at 60% load runs cooler and quieter and lasts longer. Second, and more important, transient spikes. Modern GPUs (especially NVIDIA's 40 and 50 series) can briefly draw two to three times their rated wattage for a few milliseconds when a scene loads. A PSU sized with no headroom sees that spike, trips its over-current protection, and shuts your PC off mid-game. The 25% buffer absorbs it.
PSU Wattage by GPU (2026)
These assume a typical gaming CPU pulling around 105W (think Ryzen 7 9700X, Core Ultra 7, or an i5-14600K) plus the usual handful of drives and fans. If you are running a power-hungry chip like a Core i7-14700K or you have a dozen drives and an AIO, bump up one tier.
| GPU | GPU TDP | Bare Minimum | Recommended |
|---|---|---|---|
| RTX 5090 | 575W | 850W | 1000W |
| RTX 5080 | 360W | 550W | 750W |
| RTX 5070 Ti | 300W | 550W | 650W |
| RTX 5070 | 250W | 450W | 550W |
| RTX 5060 Ti | 180W | 450W | 550W |
| RTX 5060 | 150W | 450W | 550W |
| RX 7900 XTX | 355W | 550W | 750W |
| RX 9070 XT | 300W | 550W | 650W |
| RX 9070 | 250W | 450W | 550W |
| RX 9060 XT | 200W | 450W | 550W |
Notice how forgiving the mid-range is. Everything from an RTX 5060 up to an RX 9070 lives comfortably on a 550W to 650W unit. You do not need a 1000W monster unless you are feeding an RTX 5090, and frankly buying one for a 5070 build is just lighting money on fire.
A quick honesty note on the bottom of the chart: the calculator says a 5060 build technically clears on 450W. You can run it there, but 450W units are rare and often low quality, and they leave you zero upgrade room. We would grab a solid 550W 80+ Gold unit instead. It costs almost the same and it is the smarter floor.
Want the exact number for your specific parts, including drives and fans? Run them through the PSU Calculator - it breaks down every component's draw and tells you the minimum and recommended size in one click.
Don't Just Chase Watts: The Quality Part
Wattage is half the decision. The other half is whether the unit is actually good, and this is where people get burned.
Get 80+ Gold. The efficiency rating (80+ Bronze, Gold, Platinum, Titanium) tells you how much wall power becomes usable DC power. Gold is about 90% efficient and it is the value sweet spot. But the rating is also a rough proxy for build quality - reputable Gold units use better capacitors and protection circuitry than bargain-bin Bronze ones. You can shop 80+ Gold units here.
Look for ATX 3.1 and PCIe 5.1 if you have a current GPU. This gets you the native 12V-2x6 connector and proper transient spike handling for 40 and 50 series cards, so you skip the ugly adapter dongle.
Buy modular if you can. Fully modular means you only plug in the cables you use, which makes the build cleaner and airflow better. Not a performance thing, just a sanity thing.
Brand matters more than the spec sheet. A 650W unit from a top-tier maker beats an 850W no-name every time. The PSU is the one part that can take the rest of your build down with it if it fails badly, so it is not where you cut corners.
Match It to Your Build
If you are still deciding on parts, our pre-built configurations already include a correctly sized, quality PSU for every budget tier, so you can see exactly what wattage pairs with each GPU in a real build. And if you are upgrading and worried your current GPU and CPU are mismatched in the first place, the Bottleneck Calculator will tell you whether your parts are actually balanced before you spend anything.
The Bottom Line
Stop overthinking it. Add your CPU and GPU TDP, add ~90W, multiply by 1.25, round up. For the vast majority of 2026 gamers that is a quality 650W or 750W 80+ Gold unit, and it will carry you through a GPU upgrade or two. Size it once, size it right, and never think about it again.
Here are the safe picks by tier:
- Budget (RTX 5060 / RX 9060 / RX 9060 XT): 550W 80+ Gold
- Mid-range (RTX 5070 / 5070 Ti / RX 9070 / 9070 XT): 650W 80+ Gold
- High-end (RTX 5080 / RX 7900 XTX): 750W 80+ Gold
- Flagship (RTX 5090): 1000W 80+ Gold
Frequently Asked Questions
How many watts does my gaming PC need?
For most 2026 gaming builds, a quality 650W to 850W power supply covers you. The exact number depends on your GPU - an RTX 5060 or RX 9060 is happy on 550W, an RTX 5070 or RX 9070 wants 550-650W, and an RTX 5090 needs a 1000W unit. Add up your CPU TDP plus GPU TDP, add about 90W for everything else, then add 25% headroom.
Is it bad to buy a PSU that is too powerful?
No. A bigger PSU does not push extra power into your parts - it only delivers what they draw. A 850W unit running a 500W system just runs cooler, quieter, and more efficiently, and it leaves you room to upgrade your GPU later. The only downside is spending a bit more upfront.
What happens if my PSU is too small?
An undersized PSU causes random shutdowns, crashes, and reboots, usually right when you load a game and the GPU spikes. Modern GPUs can briefly pull 2-3x their rated wattage for a few milliseconds, and a too-small PSU trips its protection and cuts power. In rare cases it can damage components.
Does 80+ Gold actually matter?
Yes, but mostly for quality, not your power bill. 80+ Gold means roughly 90% efficiency, but the bigger deal is that Gold-rated units from reputable brands use better internal components and protections. For a gaming PC, 80+ Gold is the value sweet spot. Platinum and Titanium cost more for marginal efficiency gains.
Should I size my PSU for a future GPU upgrade?
Absolutely. Next-gen GPUs tend to draw more power, not less. If you think you will upgrade your graphics card in the next few years, buy a PSU with 150-300W of headroom over your current draw. It is far cheaper than buying a second power supply later.