The Best Power Supplies for the RTX 4090

Its flat modular cables have colour-matched connectors, and a hydraulic-bearing fan with Smart Zero Fan keeps it quiet. On rated output it ties with the NZXT C1000 Gold Core, the MSI MPG A1000GS PCIE5 II and the Seasonic Vertex PX-1000 at 1000W. On native 12V-2x6 cable count it ties with the be quiet! Power Zone 2 850W, the NZXT C1000 Gold Core, the Super Flower Leadex VIII Platinum PRO 850W and the Seasonic Vertex PX-1000 at 1.

The Thermaltake Toughpower GT 1000W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. At 140mm deep, compare it with your case's PSU clearance before buying. It undercut the MSI MPG A1000GS PCIE5 II and every other pick on price at the time of writing. The maker doesn't give its 8-pin PCIe connector count; if that figure matters, the be quiet! Power Zone 2 850W offers 3.

Its 140mm fan stops at low load. It matches the Super Flower Leadex VIII Platinum PRO 850W on rated output (850W). It matches the Thermaltake Toughpower GT 1000W, the NZXT C1000 Gold Core, the Super Flower Leadex VIII Platinum PRO 850W and the Seasonic Vertex PX-1000 on native 12V-2x6 cable count (1).

Like the Seasonic Vertex PX-1000, it has a platinum 80 plus rating, while the MSI MPG A1000GS PCIE5 II uses a gold 80 plus rating. No depth is rated for the be quiet! Power Zone 2 850W, so check the maker's page against your case's PSU bay. If you want a confirmed warranty, look to the MSI MPG A1000GS PCIE5 II instead: it offers 10 years, while this one gives no figure.

It uses 105°C-rated capacitors, embossed modular cables and a dual-colour 12V-2x6 connector. It matches the Thermaltake Toughpower GT 1000W, the MSI MPG A1000GS PCIE5 II and the Seasonic Vertex PX-1000 on rated output (1000W). It matches the Thermaltake Toughpower GT 1000W, the be quiet! Power Zone 2 850W, the Super Flower Leadex VIII Platinum PRO 850W and the Seasonic Vertex PX-1000 on native 12V-2x6 cable count (1).

Like the Thermaltake Toughpower GT 1000W and MSI MPG A1000GS PCIE5 II, it has a gold 80 plus rating, while the be quiet! Power Zone 2 850W uses a platinum 80 plus rating. It also offers Cybenetics noise certification listed by NZXT. No depth is rated for the NZXT C1000 Gold Core, so check the maker's page against your case's PSU bay. There is no published 8-pin PCIe connector count figure, whereas the be quiet! Power Zone 2 850W offers 3.

It has a native 12V-2x6 cable and braided ribbon cables. On rated output it ties with the be quiet! Power Zone 2 850W at 850W. On native 12V-2x6 cable count it ties with the Thermaltake Toughpower GT 1000W, the be quiet! Power Zone 2 850W, the NZXT C1000 Gold Core and the Seasonic Vertex PX-1000 at 1.

The Super Flower Leadex VIII Platinum PRO 850W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. At 125mm deep, compare it with your case's PSU clearance before buying. On price it sat fifth of 6, between the cheaper be quiet! Power Zone 2 850W and the pricier Seasonic Vertex PX-1000, at the time of writing. The trade-off is rated output; for more, the Thermaltake Toughpower GT 1000W offers 1000W.

MSI backs it with a 10-year warranty and 105°C capacitors throughout. Its embossed jacket cables bend easily, and eight protections guard the system. MSI lists RTX 50 series support.

It matches the Thermaltake Toughpower GT 1000W, the NZXT C1000 Gold Core and the Seasonic Vertex PX-1000 on rated output (1000W). Nothing else here matches its 2 native 12V-2x6 cable count; the Thermaltake Toughpower GT 1000W comes closest at 1. Like the Thermaltake Toughpower GT 1000W and NZXT C1000 Gold Core, it has a gold 80 plus rating, while the be quiet! Power Zone 2 850W uses a platinum 80 plus rating.

No depth is rated for the MSI MPG A1000GS PCIE5 II, so check the maker's page against your case's PSU bay. If you want a confirmed depth, look to the Super Flower Leadex VIII Platinum PRO 850W instead: it comes in at 125mm, while this one gives no figure.

It uses hybrid fan control. Seasonic lists it as ready for the RTX 5090 and AMD's RX 9000 series. It matches the Thermaltake Toughpower GT 1000W, the NZXT C1000 Gold Core and the MSI MPG A1000GS PCIE5 II on rated output (1000W).

It matches the Thermaltake Toughpower GT 1000W, the be quiet! Power Zone 2 850W, the NZXT C1000 Gold Core and the Super Flower Leadex VIII Platinum PRO 850W on native 12V-2x6 cable count (1). Like the be quiet! Power Zone 2 850W, it has a platinum 80 plus rating, while the Thermaltake Toughpower GT 1000W uses a gold 80 plus rating. Only the Super Flower Leadex VIII Platinum PRO 850W came close to it on price at the time of writing; it cost the most of the 6 picks. It gives ground on native 12V-2x6 cable count, where the MSI MPG A1000GS PCIE5 II offers 2.