Buying Guide
The Best Power Supplies for the RTX 5090
Six units of 1000W or more with native 12V-2x6 cables, matched to NVIDIA's 1000W recommendation for the RTX 5090.
By The PC Journal editorial team
12 min read6 products evaluated
NVIDIA recommends a 1000W power supply for a PC with an RTX 5090, which draws power through a single 16-pin 12V-2x6 connector. Each unit here meets that figure with a native cable.
We compared wattage, connectors and ratings from the power supply listings against the card maker's guidance; we did not load-test these units.
Quick Picks
Our 6 recommendations at a glance. Tap a pick for the full verdict.
Best Match for an RTX 5090
MSI MPG A1000GS PCIE5 II
1000W with two native 12V-2x6 cables and a 10-year warranty.
Best for: Most RTX 5090 builds.
Our take Check price for MSI MPG A1000GS PCIE5 II (opens in a new tab)
Most Efficient
FSP Hydro Ti Pro 1000W
An 80 Plus Titanium rating with a 10-year warranty.
Best for: Long, heavy gaming sessions.
Our take Check price for FSP Hydro Ti Pro 1000W (opens in a new tab)
Best Corsair Pick
CORSAIR RM1000x (ATX 3.1)
A fully modular ATX 3.1 unit with a Cybenetics Gold rating.
Best for: Corsair builds.
Our take Check price for CORSAIR RM1000x (ATX 3.1) (opens in a new tab)
Best for Mixed Cards
be quiet! Pure Power 13 M 1000W
Four PCIe 8-pin connectors plus a 12V-2x6.
Best for: Reusing the PSU with older cards.
Our take Check price for be quiet! Pure Power 13 M 1000W (opens in a new tab)
Best Headroom Pick
ASRock Steel Legend SL-1200G
1200W with a Cybenetics LAMBDA A noise rating.
Best for: High-power CPUs alongside the card.
Our take Check price for ASRock Steel Legend SL-1200G (opens in a new tab)
Most Output
ASRock Phantom Gaming PG-1600G
1600W with two 12V-2x6 cables and eight PCIe 8-pin connectors.
Best for: Workstations and multi-GPU setups.
Our take Check price for ASRock Phantom Gaming PG-1600G (opens in a new tab)
Our Picks
Best Match for an RTX 50901 of 6
MSI MPG A1000GS PCIE5 II on Amazon (opens in a new tab)
MSI's MPG A1000GS PCIE5 II is the only 1000W unit here with two native 12V-2x6 cables, and it adds three PCIe 8-pin connectors.
Best for
- Most RTX 5090 builds.
Skip if
- Skip it if 8-pin PCIe connector count matters most to you; the ASRock Phantom Gaming PG-1600G offers 8.
Why we like it
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.
On rated output it ties with the FSP Hydro Ti Pro 1000W, the CORSAIR RM1000x and the be quiet! Pure Power 13 M 1000W at 1000W. On native 12V-2x6 cable count it ties with the ASRock Phantom Gaming PG-1600G at 2. On 8-pin PCIe connector count it trails the group at 3, while the ASRock Phantom Gaming PG-1600G offers 8.
No depth is rated for the MSI MPG A1000GS PCIE5 II, so check the maker's page against your case's PSU bay. It was the cheapest of the group when we checked; the CORSAIR RM1000x was the next step up.
Key dimensions & specs
- Wattage: 1000W
- Native 12V-2x6 cables: 2
- PCIe 8-pin connectors: 3
- Warranty: 10 years
- 80 Plus rating: Gold
- ATX version: ATX 3.1
- Form factor: ATX
- Cabling: Fully modular
- Colour: Black
Pros
- 1000W of rated output for high-power cards
- 2 native 12V-2x6 cables
- A 10-year warranty
- ATX 3.1 compliance
Cons
- 8-pin PCIe connector count trails the ASRock Phantom Gaming PG-1600G (8)
Most Efficient2 of 6
FSP Hydro Ti Pro 1000W on Amazon (opens in a new tab)
FSP's Hydro Ti Pro carries an 80 Plus Titanium rating, five PCIe 8-pin connectors plus a 12V-2x6 cable, and a 10-year warranty.
Best for
- Long, heavy gaming sessions.
Skip if
- Price-first buyers should look at the MSI MPG A1000GS PCIE5 II, which cost less when we checked.
Why we like it
It is 150mm deep and holds a Cybenetics LAMBDA A++ noise rating. It matches the MSI MPG A1000GS PCIE5 II, the CORSAIR RM1000x and the be quiet! Pure Power 13 M 1000W on rated output (1000W). It matches the CORSAIR RM1000x, the be quiet! Pure Power 13 M 1000W and the ASRock Steel Legend SL-1200G on native 12V-2x6 cable count (1).
Its 5 8-pin PCIe connector count ranks second of 4 here, behind the ASRock Phantom Gaming PG-1600G (8) and ahead of the MSI MPG A1000GS PCIE5 II (3). No other pick in this guide offers a titanium 80 plus rating; compare the ASRock Steel Legend SL-1200G, which has a gold 80 plus rating. Only the ASRock Phantom Gaming PG-1600G came close to it on price at the time of writing; it cost the most of the 6 picks.
Key dimensions & specs
- Wattage: 1000W
- Native 12V-2x6 cables: 1
- PCIe 8-pin connectors: 5
- Warranty: 10 years
- Depth: 150mm
- 80 Plus rating: Titanium
- Cybenetics rating: Titanium
- ATX version: ATX 3.1
- Form factor: ATX
- Cabling: Fully modular
- Fan: 135mm
- Fan stop: Yes
- Colour: Black
Pros
- 1000W of rated output for high-power cards
- A native 12V-2x6 cable for 16-pin cards
- 5 PCIe 8-pin connectors for older cards
- A 10-year warranty
Cons
- Costs more than the MSI MPG A1000GS PCIE5 II at the time of writing
Best Corsair Pick3 of 6
CORSAIR RM1000x (ATX 3.1) on Amazon (opens in a new tab)
Corsair's RM1000x is a fully modular ATX 3.1 unit with a native 12V-2x6 cable and Cybenetics Gold efficiency.
Best for
- Corsair builds.
Skip if
- Pass if a published 8-pin PCIe connector count matters; this one has none.
Why we like it
Its embossed cables come with low-profile combs for tidy routing. It is Cybenetics Gold rated at up to 91% efficiency, and its embossed cables with low-profile combs route easily. It matches the MSI MPG A1000GS PCIE5 II, the FSP Hydro Ti Pro 1000W and the be quiet! Pure Power 13 M 1000W on rated output (1000W).
It matches the FSP Hydro Ti Pro 1000W, the be quiet! Pure Power 13 M 1000W and the ASRock Steel Legend SL-1200G on native 12V-2x6 cable count (1). You get a gold cybenetics rating here, which sets it apart from the ASRock Phantom Gaming PG-1600G and its a platinum cybenetics rating. The CORSAIR RM1000x comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter.
No depth is rated for the CORSAIR RM1000x, so check the maker's page against your case's PSU bay. There is no published 8-pin PCIe connector count figure, whereas the ASRock Phantom Gaming PG-1600G offers 8.
Key dimensions & specs
- Wattage: 1000W
- Native 12V-2x6 cables: 1
- Cybenetics rating: Gold
- ATX version: ATX 3.1
- Form factor: ATX
- Cabling: Fully modular
- Colour: Black
Pros
- 1000W of rated output for high-power cards
- A native 12V-2x6 cable for 16-pin cards
- ATX 3.1 compliance
- Fully modular cables
Cons
- No published 8-pin PCIe connector count
- No published warranty
- Costs more than the MSI MPG A1000GS PCIE5 II at the time of writing
Best for Mixed Cards4 of 6
be quiet! Pure Power 13 M 1000W on Amazon (opens in a new tab)
be quiet!'s Pure Power 13 M 1000W offers four PCIe 8-pin connectors plus a native 12V-2x6, and Cybenetics rates it Platinum.
Best for
- Reusing the PSU with older cards.
Skip if
- Skip it if rated output matters most to you; the ASRock Phantom Gaming PG-1600G offers 1600W.
Why we like it
The fan stops at low load. Its fan stops completely at low load, and LLC topology gives tight voltage regulation for a quiet system. On rated output it ties with the MSI MPG A1000GS PCIE5 II, the FSP Hydro Ti Pro 1000W and the CORSAIR RM1000x at 1000W.
On native 12V-2x6 cable count it ties with the FSP Hydro Ti Pro 1000W, the CORSAIR RM1000x and the ASRock Steel Legend SL-1200G at 1. On 8-pin PCIe connector count it sits mid-pack at 4: the ASRock Phantom Gaming PG-1600G offers 8, and the MSI MPG A1000GS PCIE5 II comes in at 3. Like the ASRock Steel Legend SL-1200G and ASRock Phantom Gaming PG-1600G, it has a platinum cybenetics rating, while the FSP Hydro Ti Pro 1000W uses a titanium cybenetics rating. On price it sat third of 6, between the cheaper CORSAIR RM1000x and the pricier ASRock Steel Legend SL-1200G, at the time of writing.
Key dimensions & specs
- Wattage: 1000W
- Native 12V-2x6 cables: 1
- PCIe 8-pin connectors: 4
- 80 Plus rating: Gold
- Cybenetics rating: Platinum
- ATX version: ATX 3.1
- Form factor: ATX
- Fan stop: Yes
- Colour: Black
Pros
- 1000W of rated output for high-power cards
- A native 12V-2x6 cable for 16-pin cards
- 4 PCIe 8-pin connectors for older cards
- ATX 3.1 compliance
Cons
- Rated output trails the ASRock Phantom Gaming PG-1600G (1600W)
- No published warranty
- Costs more than the MSI MPG A1000GS PCIE5 II at the time of writing
Best Headroom Pick5 of 6
ASRock Steel Legend SL-1200G on Amazon (opens in a new tab)
ASRock's Steel Legend SL-1200G is a 1200W ATX 3.1 unit with a native 12V-2x6 cable, a 10-year warranty and a Cybenetics LAMBDA A noise rating.
Best for
- High-power CPUs alongside the card.
Skip if
- Skip it if native 12V-2x6 cable count matters most to you; the MSI MPG A1000GS PCIE5 II offers 2.
Why we like it
It uses 100% Japanese capacitors for longevity and stable output. Check your case and component specifications before buying. Its 1200W rated output ranks second of 6 here, behind the ASRock Phantom Gaming PG-1600G (1600W) and ahead of the be quiet! Pure Power 13 M 1000W (1000W).
It matches the FSP Hydro Ti Pro 1000W, the CORSAIR RM1000x and the be quiet! Pure Power 13 M 1000W on native 12V-2x6 cable count (1). It also comes with a 5V boost function for stable standby voltage. No depth is rated for the ASRock Steel Legend SL-1200G, so check the maker's page against your case's PSU bay. It gives ground on native 12V-2x6 cable count, where the MSI MPG A1000GS PCIE5 II offers 2.
Key dimensions & specs
- Wattage: 1200W
- Native 12V-2x6 cables: 1
- Warranty: 10 years
- 80 Plus rating: Gold
- Cybenetics rating: Platinum
- ATX version: ATX 3.1
- Form factor: ATX
- Cabling: Fully modular
- Fan: 135mm
- Colour: Black
Pros
- 1200W of rated output for high-power cards
- A native 12V-2x6 cable for 16-pin cards
- A 10-year warranty
- ATX 3.1 compliance
Cons
- Native 12V-2x6 cable count trails the MSI MPG A1000GS PCIE5 II (2)
- No published 8-pin PCIe connector count
- Costs more than the MSI MPG A1000GS PCIE5 II at the time of writing
Most Output6 of 6
ASRock Phantom Gaming PG-1600G on Amazon (opens in a new tab)
ASRock's Phantom Gaming PG-1600G has 1600W, two 12V-2x6 cables with temperature monitoring and eight PCIe 8-pin connectors.
Best for
- Workstations and multi-GPU setups.
Skip if
- Worth skipping when a 180mm depth needs a roomy PSU ba is a problem.
Why we like it
At 180mm deep it needs a large case. Its 1600W rated output is the highest here; the ASRock Steel Legend SL-1200G comes next at 1200W. It matches the MSI MPG A1000GS PCIE5 II on native 12V-2x6 cable count (2).
Nothing else here matches its 8 8-pin PCIe connector count; the FSP Hydro Ti Pro 1000W comes closest at 5. It shares a platinum cybenetics rating with the be quiet! Pure Power 13 M 1000W and ASRock Steel Legend SL-1200G; the CORSAIR RM1000x goes with a gold cybenetics rating. At 180mm deep, compare it with your case's PSU clearance before buying.
When we checked, only the ASRock Steel Legend SL-1200G and cheaper picks cost less, and the FSP Hydro Ti Pro 1000W cost more. Warranty is its weakest area, and the MSI MPG A1000GS PCIE5 II covers it better at 10 years.
Key dimensions & specs
- Wattage: 1600W
- Native 12V-2x6 cables: 2
- PCIe 8-pin connectors: 8
- Warranty: 10 years
- Depth: 180mm
- 80 Plus rating: Gold
- Cybenetics rating: Platinum
- ATX version: ATX 3.1
- Form factor: ATX
- Cabling: Fully modular
- Fan: 135mm
- Colour: Black
Pros
- 1600W of rated output for high-power cards
- 2 native 12V-2x6 cables
- 8 PCIe 8-pin connectors for older cards
- A 10-year warranty
Cons
- A 180mm depth needs a roomy PSU bay
- Costs more than the MSI MPG A1000GS PCIE5 II at the time of writing
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- Build and warranty
- We checked depth, modular cabling, fan-stop modes and warranty length.
- Wattage
- We compared rated output with NVIDIA's or AMD's recommended system power for the card.
- Connectors
- We recorded native 12V-2x6 cables and PCIe 8-pin connectors where the listing states them.
- Standards
- We noted ATX version, 80 Plus and Cybenetics ratings.
What to Look for in a PSUs for RTX 5090
Key buying criteria so you get the right fit the first time.
Start from the card maker's PSU figure
NVIDIA and AMD publish a recommended total system power for each card, and partner cards often state their own. Treat that figure as the floor, then add headroom for a high-power CPU.
More wattage than you need does not harm anything; it mostly costs money.
Match the power connector
Most RTX 40 and RTX 50 cards use a single 16-pin 12V-2x6 (12VHPWR) plug, while many Radeon cards use two or three 8-pin plugs. A native cable avoids bulky adapters.
Push the 16-pin plug fully home and avoid a sharp bend right at the connector.
Prefer ATX 3.1
ATX 3.1 units are designed for the brief power spikes modern graphics cards produce and ship with the revised 12V-2x6 connector. Older units can still work, but check the maker's guidance for your card.
Compare efficiency ratings
80 Plus and Cybenetics ratings describe how much power turns into heat. Gold is the usual target for a gaming PC; Platinum and Titanium run cooler and cost more.
Check depth and cabling
Deeper units can clash with drive cages or front radiators. Fully modular cables make routing easier in tight cases.
Use the warranty as a quality signal
Long warranties of seven to twelve years show how long a maker expects a unit to last. A power supply often moves from one build to the next, so the warranty matters.
How to Choose a PSUs for RTX 5090
By priority
| Priority | Consider | Why |
|---|---|---|
| Most RTX 5090 builds | MSI MPG A1000GS PCIE5 II | 1000W with two native 12V-2x6 cables and a 10-year warranty |
| Long, heavy gaming sessions | FSP Hydro Ti Pro 1000W | An 80 Plus Titanium rating with a 10-year warranty |
| Corsair builds | CORSAIR RM1000x | A fully modular ATX 3.1 unit with a Cybenetics Gold rating |
| Reusing the PSU with older cards | be quiet! Pure Power 13 M 1000W | Four PCIe 8-pin connectors plus a 12V-2x6 |
| High-power CPUs alongside the card | ASRock Steel Legend SL-1200G | 1200W with a Cybenetics LAMBDA A noise rating |
| Workstations and multi-GPU setups | ASRock Phantom Gaming PG-1600G | 1600W with two 12V-2x6 cables and eight PCIe 8-pin connectors |
Scroll sideways to see every column.
Key specs side by side
Figures as each maker states them.
| Power supplie | Wattage | Native 12V-2x6 cables | PCIe 8-pin connectors | Warranty |
|---|---|---|---|---|
| MSI MPG A1000GS PCIE5 II | 1000W | 2 | 3 | 10 years |
| FSP Hydro Ti Pro 1000W | 1000W | 1 | 5 | 10 years |
| CORSAIR RM1000x | 1000W | 1 | Not listed | Not listed |
| be quiet! Pure Power 13 M 1000W | 1000W | 1 | 4 | Not listed |
| ASRock Steel Legend SL-1200G | 1200W | 1 | Not listed | 10 years |
| ASRock Phantom Gaming PG-1600G | 1600W | 2 | 8 | 10 years |
Scroll sideways to see every column.
By price at the time of writing
Prices change often; these tiers reflect Amazon prices when this guide was updated.
| Price tier | Power supplies |
|---|---|
| About $100 to $150 | MSI MPG A1000GS PCIE5 II, CORSAIR RM1000x, be quiet! Pure Power 13 M 1000W, ASRock Steel Legend SL-1200G |
| About $150 to $250 | ASRock Phantom Gaming PG-1600G |
| About $250 to $500 | FSP Hydro Ti Pro 1000W |
Frequently Asked Questions
Can I use an SFX power supply?
Yes, if the case supports SFX and the unit meets the wattage and connector needs of your card. SFX units cost more per watt.
Can I use the 16-pin adapter that came with my graphics card?
Yes, if it is the maker's own adapter and every 8-pin plug on it is connected. A native 12V-2x6 cable is tidier and has fewer joins.
How much headroom should I leave above the recommended wattage?
The card maker's figure already covers a typical system. Add 100 to 150W if you run a high-power CPU or plan a bigger card later.
Does a Platinum unit save much on electricity?
Only a little for most gaming PCs. The main gains are less heat and often a quieter fan.
Is an ATX 3.0 power supply still fine?
Generally yes. ATX 3.1 mainly revises the connector to 12V-2x6 and relaxes some spike requirements; check your unit's cable is rated for your card.
Can I reuse the power supply from my old PC?
Only if it meets the card's wattage and connector needs and is still under warranty or in good health. Very old units lack modern connectors.
Bottom Line
MSI's MPG A1000GS PCIE5 II is the best-matched power supply for an RTX 5090, with two native 12V-2x6 cables. FSP's Hydro Ti Pro is the most efficient, and ASRock's SL-1200G or PG-1600G add headroom.