Best PC Power Supply 2026: 10 Ranked, and the Specs That Don't Add Up

It is the cheapest fully modular power supply in this top ten at £89.00, and it does not ask you to accept a contradiction to get there. The table lists 850 Watts output, a 100-240V AC input range, one 120mm rifle bearing fan and a 1.53 kg weight. Nothing in the sheet argues with anything else in the sheet, which is rarer among pc power supply listings than it should be.

In practice the useful parts are the Intel ATX 3.1 certification and the 12V-2x6 cable, which means the unit is specified for 2x transient power excursions from a graphics card. The 105°C capacitors and the rifle bearing fan are ordinary choices at this price, and the fan curve is tuned for low load rather than for bragging rights.

The catch: 310 ratings at 4.7 is strong but not spotless — four of the 100 ratings shown are one-star. And an 850W power supply at this price keeps the cable bundle modest, so check what your graphics card actually needs. The white version costs £5.99 more for identical hardware.

On paper this is one of the better-value 80 plus gold power supply listings at £89.99: 850W, fully modular cabling, a native 16-pin connector rated to 600W, and a 10-year warranty. The catch is the fan. The bullet text says a '135mm fluid dynamic bearing (FDB) fan'; the spec table on the same page says 120 Millimetres. Both cannot be right, and no photo settles it.

In theory 0% RPM mode is the feature you notice day to day: the fan stops below 40% load, and a switch at the rear disables the mode entirely. The half-bridge LLC with DC-to-DC converter and active PFC is standard modern topology, and the single-rail design is what feeds a graphics card through transient spikes.

However, the unit weighs 3.15 kg and measures 15 x 15 x 8.6 cm — 650 g heavier and a centimetre deeper than the MAG A850GL ranked just below it. If your case is tight at the PSU shroud, that gap is real. And if you want an ATX 3.1 power supply rather than ATX 3.0, this is not it.

This has the largest review base in the group: 938 ratings at 4.5, at £94.99. The table lists an input range of 207-240V AC, which covers British mains but rules out 110-120V supplies. The warranty is 7 years, a step down from the MPG above, and the price is £5 higher.

Crucially, the cable set is the selling point: triple-layer sleeved cables with management combs and copper alloy connectors, where the MPG runs flat black cables. At the same time it weighs 2.5 kg against the MPG's 3.15 kg, which makes it easier to work with in a small case. As a pc power supply for a first serious build, that presentation is worth more than most spec sheets admit.

Even so, the protection list reads 'OCP, OVP, OP, OTP, SCP, UVP' — a typo for OPP, in a listing nobody proofread. Seven of the 100 ratings shown are one-star, the highest count in the top half of this list. If ATX 3.1 and PCIe 5.1 matter to you rather than 3.0 and 5.0, look at the Corsair instead.

At £121.94 this is the second-dearest unit in the list, and it earns part of that: 80 PLUS Platinum and Cybenetics Platinum, up to 94.1% efficiency, and a 140mm Pure Wings 3 fan that stops entirely at low load. The spec table, though, lists 230 Volts (AC) as both the minimum and the maximum input voltage — the same figure in both fields.

In practice you get 850W on one 12V rail, ATX 3.1, a native 12V-2x6 connector with a 90-degree angled plug in the box, and three PCIe 6+2-pin connectors for current-gen cards. The LLC topology is what keeps voltage regulation tight. Post-ventilation runs the fan for 2-5 minutes after shutdown, which is a small thing you notice nightly.

That said, two basic figures are missing from the table: there is no fan size (140mm appears only in the marketing copy) and no item dimensions at all. If you are measuring a case before buying, you are working from a photo and a 3.33 kg weight. Three one-star and three two-star ratings appear in the 100 shown.

First, the wattage: 750W, not 850W, at £77.82. Second, the cable list, because the bullet text and the spec field disagree. The bullet says 'SATA x 12' and 'PCI-e 6+2 x 4'. The spec field says '8 SATA (8 connectors)' and 'PCI-e 6+2 Pin (2 connectors)'. Connector Quantity is listed separately as 16. At least one of those three numbers is wrong.

By contrast with the 850W units above, this one is rated to a 50°C upper temperature, which is the figure that matters if you overclock or render for hours. The 120mm hydro-dynamic bearing fan is temperature-controlled, so it slows at idle. You also get two EPS connectors, which covers most modern boards.

In short, this is the sensible pick if 750W covers your build. If you are planning a card that wants a native 16-pin connector, the listing makes no mention of one, so this is not the pc power supply for that build. Six of the 100 ratings shown are one-star, and the unit weighs 2.76 kg in a 16 x 15 x 8.6 cm shell.

£57.99 buys 750W and an 80 Plus Bronze rating of up to 88% efficiency. That is the lowest price in this top ten, by more than £19. It is also non-modular, and the spec table gives 230V as both the minimum and the maximum input voltage — the second unit on this page to do that.

The compact 125mm casing is the practical draw; most modern cases will take it without a fight. The 120mm thermally controlled fan only spins up under load, and Corsair states the full rated wattage is continuous rather than peak. Non-modular means every unused cable lives in the case, which costs airflow rather than money.

Even so, 438 ratings at 4.5 is the third-largest sample here, and eight of the 100 shown are one-star — the highest proportion in the top six. There is no ATX 3.1 certification and no mention of a 12V-2x6 connector. This is a budget unit for a 750W build, and it is priced like one.

This is the same unit as the one in first place, in white. Same 15 x 14 x 8.6 cm, same 1.53 kg, same 850W output, same 120mm rifle bearing fan, same Intel ATX 3.1 and PCIe 5.1 certification. The differences are the price, £94.99 against £89.00, and the review base, 50 against 310.

In practice you are paying for a colour. That is a fair reason if the case has a window and a white interior; it is not a reason if it does not. The internals are unchanged, so the low-noise fan curve, the 105°C capacitors and the modern standby wake times carry over exactly. One field does differ: the white version lists a maximum input voltage of 230V, where the black one lists 240V.

That said, 50 ratings is a thin sample, and three of the 100 shown are two-star. If you are buying on evidence rather than looks, the black version offers six times the review base for £5.99 less. Either way the hardware is the same, so let the case decide.

This is a best-selling pc power supply unit with 751 ratings at 4.7, priced at £96.50. Its spec table is the one that started this article. 'Current Rating: 850 Amps.' 'Maximum Input Voltage: 240 Volts (AC).' Eight hundred and fifty amps at 240 volts is 204,000W. The same table rates the output at 850 Watts — a factor of 240 apart.

The rest of the row is equally loose. Item dimensions are given as 50 x 50 x 28 centimetres, which is a shipping box rather than a PSU, and the fan count is 2 while the fan size field says 120 Millimetres. Meanwhile the product bullets say only 'Value for money', 'Good product with good quality' and 'Durable' — no efficiency certification, no connector list and no warranty length.

Worth noting: 4.7 from 751 buyers is not an accident, and the TUF name has a long record behind it. But you cannot verify from this page whether the unit is ATX 3.0 or 3.1, modular or not, or what cables are in the box. If you need a fully modular power supply with a documented 12V-2x6 connector, buy one whose table says so.

At £158.99 this is the most expensive unit here, and it holds the best score: 4.8 from 95 ratings. The spec table is where it gets odd. 'Power Supply Design: Non-Modular' and 'Connector Quantity: 4'. A fixed cable loom and four connectors on a flagship 850W Platinum unit at this price is a strange combination, and the marketing bullets never mention cabling at all.

What the bullets do claim is measurable in principle: GaN MOSFETs for up to 30% better power efficiency, a GPU-first voltage stabiliser said to improve delivery by up to 45%, and dual ball bearings lasting twice as long as sleeve designs. Those are percentages with no test method attached. The table confirms a maximum input voltage of 220V AC — below the roughly 230V British mains, the same kind of mismatch the Vetroo listing has.

That said, 91 of the 100 ratings shown are five-star and only two are one-star. If you are paying this much for a Platinum 850W unit, read the connector list before ordering: the listing does not say how many PCIe cables are in the box, and '4' is the only number on offer.