Power supplies (PSUs): UK prices checked today
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The power supply feeds every part of your PC, so it's the wrong place to save a few pounds. Here's how to choose one, and 650W to 1000W units with today's lowest verified price across several shops.
Quick picks
- Budget be quiet! System Power 11 650W · £54.95
Cheapest unit here, with a native 12V-2x6 plug for newer cards.
Picked on listed specs and today's price. Not tested hands-on.
Compare at a glance
| Product | Wattage and rating | Cables | Price | Retailer |
|---|---|---|---|---|
| be quiet! System Power 11 650W | 650W, 80 Plus Bronze | Fully wired | £54.95 | Overclockers UK lowest of 2 shops |
| Seasonic Core GC-750 750W | 750W, 80 Plus Gold | Fully wired | £74.99 | Overclockers UK lowest of 3 shops |
| be quiet! Pure Power 13 M 650W | 650W, 80 Plus Gold | Fully modular | £89.99 | Scan |
| Corsair RM750e (2025) 750W | 750W, Cybenetics Gold | Fully modular | £109.99 | AWD-IT lowest of 3 shops |
| be quiet! Pure Power 13 M 850W | 850W, 80 Plus Gold | Fully modular | £94.99 | Overclockers UK lowest of 3 shops |
| Cooler Master Elite Gold 1000W | 1000W, 80 Plus Gold | Fully modular | £99.99 | AWD-IT lowest of 2 shops |
Specs from retailer listings. Prices checked 20 Oct 2026. Tap a heading to sort.
All picks and prices
be quiet! System Power 11 650W
Budget pick for entry-level builds
Good for: Entry-level gaming builds
- 650W, 80 Plus Bronze
- Fully wired
- ATX 3.1 with 12V-2x6
Source: retailer listing
Checked 20 Oct 2026 · 2 shops compared
Other shops
- Scan£54.98checked 20 Oct 2026Visit Scan Ad
Seasonic Core GC-750 750W
Gold efficiency at a low price
Good for: Mid-range builds on a budget
- 750W, 80 Plus Gold
- Fully wired
- ATX 3.1
Source: retailer listing
Checked 20 Oct 2026 · 3 shops compared
Other shops
- AWD-IT£78.92checked 20 Oct 2026Visit AWD-IT Ad
- Scan£79.99checked 20 Oct 2026Visit Scan Ad
be quiet! Pure Power 13 M 650W
Modular Gold unit for mid-range builds
Good for: Tidy mid-range builds
- 650W, 80 Plus Gold
- Fully modular
- ATX 3.1 with 12V-2x6
Source: retailer listing
Checked 20 Oct 2026 at Scan
Corsair RM750e (2025) 750W
Our PSU guide pick
Good for: Mid-range builds wanting modular cables
- 750W, Cybenetics Gold
- Fully modular
- ATX 3.1, PCIe 5.1
Source: retailer listing
Checked 20 Oct 2026 · 3 shops compared
Other shops
- Scan£109.99checked 20 Oct 2026Visit Scan Ad
- Overclockers UK£114.95checked 20 Oct 2026Visit Overclockers UK Ad
be quiet! Pure Power 13 M 850W
Headroom for bigger graphics cards
Good for: PCs with bigger graphics cards
- 850W, 80 Plus Gold
- Fully modular
- ATX 3.1 with 12V-2x6
Source: retailer listing
Checked 20 Oct 2026 · 3 shops compared
Other shops
- AWD-IT£105.13checked 20 Oct 2026Visit AWD-IT Ad
- Scan£109.99checked 20 Oct 2026Visit Scan Ad
Cooler Master Elite Gold 1000W
1000W for high-end builds
Good for: High-end builds, or room to upgrade later
- 1000W, 80 Plus Gold
- Fully modular
- ATX 3.1, PCIe 5.1
Source: retailer listing
Other shops
- Scan£109.99checked 20 Oct 2026Visit Scan Ad
What to look for
- Wattage: Add up the CPU and graphics card power, then leave plenty of headroom. Your graphics card maker lists a recommended PSU size, and that's the best starting point.
- 80 Plus rating: Bronze, Gold and Platinum show efficiency. Gold wastes less power as heat and is usually quieter than Bronze. Cybenetics is a similar, newer rating.
- ATX 3.1 and 12V-2x6: Newer cards use the 12V-2x6 plug. An ATX 3.1 unit with a native cable avoids adapters.
- Modular or wired: Fully modular units let you fit only the cables you need, which makes building tidier. Fully wired units are cheaper.
- Brand and warranty: Stick to known brands and check the warranty length on the retailer page.
Questions people ask
What wattage PSU do I need?
Start with your graphics card maker's recommended PSU size, then leave some headroom for upgrades.
Is 80 Plus Gold worth it over Bronze?
Gold wastes less power as heat and is usually quieter. On this page, a Gold unit starts at £79.99.
What is 12V-2x6?
It's the power plug newer graphics cards use. An ATX 3.1 PSU with a native cable avoids adapters.
Modular or fully wired?
Modular lets you fit only the cables you need, which is tidier. Fully wired is usually cheaper.
Related guides
PC power supply buying guide: what wattage and which features (UK)
Fully modular, Cybenetics Gold, native 12V-2x6 and a 7-year warranty.
Gaming PC upgrade order: what to upgrade first
Which part to upgrade first, explained in order.
ComponentsBest budget graphics card for 1080p gaming in the UK (October 2026)
Lowest verified price of the three. The trade-off is 8GB of VRAM.