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 Alex Morgan, PC Hardware Editor
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
Which of the 6 picks to look at first. Tap a name for the full analysis.
Best Match for an RTX 5090
MSI MPG A1000GS PCIE5 II1000W with two native 12V-2x6 cables and a 10-year warranty.
Best for: Most RTX 5090 builds.
Check price for MSI MPG A1000GS PCIE5 II on Amazon (opens in a new tab)
Most Efficient
FSP Hydro Ti Pro 1000WAn 80 Plus Titanium rating with a 10-year warranty.
Best for: Long, heavy gaming sessions.
Check price for FSP Hydro Ti Pro 1000W on Amazon (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.
Check price for CORSAIR RM1000x (ATX 3.1) on Amazon (opens in a new tab)
Best for Mixed Cards
be quiet! Pure Power 13 M 1000WFour PCIe 8-pin connectors plus a 12V-2x6.
Best for: Reusing the PSU with older cards.
Check price for be quiet! Pure Power 13 M 1000W on Amazon (opens in a new tab)
Best Headroom Pick
ASRock Steel Legend SL-1200G1200W with a Cybenetics LAMBDA A noise rating.
Best for: High-power CPUs alongside the card.
Check price for ASRock Steel Legend SL-1200G on Amazon (opens in a new tab)
Most Output
ASRock Phantom Gaming PG-1600G1600W with two 12V-2x6 cables and eight PCIe 8-pin connectors.
Best for: Workstations and multi-GPU setups.
Check price for ASRock Phantom Gaming PG-1600G on Amazon (opens in a new tab)
Our Picks
Best Match for an RTX 50901 of 6
MSI MPG A1000GS PCIE5 II
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 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)
The catch
If 8-pin PCIe connector count is your priority, the ASRock Phantom Gaming PG-1600G (8) is the stronger choice.
Most Efficient2 of 6
FSP Hydro Ti Pro 1000W
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 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)
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.
Key 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
The catch
There is no published 8-pin PCIe connector count figure, whereas the ASRock Phantom Gaming PG-1600G offers 8.
Best for Mixed Cards4 of 6
be quiet! Pure Power 13 M 1000W
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 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
The catch
The trade-off is rated output; for more, the ASRock Phantom Gaming PG-1600G offers 1600W.
Best Headroom Pick5 of 6
ASRock Steel Legend SL-1200G
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.
Key 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
The catch
It gives ground on native 12V-2x6 cable count, where the MSI MPG A1000GS PCIE5 II offers 2.
Most Output6 of 6
ASRock Phantom Gaming PG-1600G
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 bay 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.
Key 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
The catch
Warranty is its weakest area, and the MSI MPG A1000GS PCIE5 II covers it better at 10 years.
How We Chose
Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.
- How these picks were ranked
- We set side by side six power supplies on rated output, native 12V-2x6 cable count, 8-pin PCIe connector count and warranty from manufacturer specifications. Nothing was tested in-house; 5 of the 13 fields compared are stated for every pick, while 8-pin PCIe connector count and warranty have gaps.
- What every pick has in common
- All 6, from the MSI MPG A1000GS PCIE5 II to the ASRock Phantom Gaming PG-1600G, state rated output, native 12V-2x6 cable count and ATX version and share ATX 3.1 ATX version and Black colour.
- Where the specs have gaps
- The CORSAIR RM1000x and the ASRock Steel Legend SL-1200G give no 8-pin PCIe connector count; the CORSAIR RM1000x and the be quiet! Pure Power 13 M 1000W give no warranty.
- Price range
- At our last check the picks ran from the MSI MPG A1000GS PCIE5 II ($100 to $150) to the FSP Hydro Ti Pro 1000W ($250 to $500).
What to Look for in a PSUs for RTX 5090
Key buying criteria so you get the right fit the first time.
Rated output
Across these 6 picks rated output spans 1000W (the be quiet! Pure Power 13 M 1000W) to 1600W (the ASRock Phantom Gaming PG-1600G). The ASRock Steel Legend SL-1200G comes second at 1200W, in the $100 to $150 tier against $150 to $250 for the ASRock Phantom Gaming PG-1600G.
Native 12V-2x6 cable count across these picks
The MSI MPG A1000GS PCIE5 II tops native 12V-2x6 cable count at 2 and the ASRock Steel Legend SL-1200G sits lowest at 1; 2 picks share the top figure. If native 12V-2x6 cable count is your first filter, the MSI MPG A1000GS PCIE5 II sets the ceiling at 2.
Power cables routed to a graphics card inside a PC How much 8-pin PCIe connector count you need
The ASRock Phantom Gaming PG-1600G tops 8-pin PCIe connector count at 8 and the MSI MPG A1000GS PCIE5 II sits lowest at 3. The ASRock Phantom Gaming PG-1600G is the pick for 8-pin PCIe connector count. The CORSAIR RM1000x and the ASRock Steel Legend SL-1200G give no 8-pin PCIe connector count figure, so 4 of 6 picks are compared here.
Cybenetics rating
The FSP Hydro Ti Pro 1000W lists titanium; the CORSAIR RM1000x lists Gold; the be quiet! Pure Power 13 M 1000W, the ASRock Steel Legend SL-1200G and the ASRock Phantom Gaming PG-1600G list platinum. Sort out cybenetics rating before price: it splits 5 stated picks into groups of 3, 1 and 1.
A PSU-side 8-pin cable connector held between two fingers Setup checks
The MSI MPG A1000GS PCIE5 II comes with 2 native 12V-2x6 cables, so a 16-pin card plugs in without an adapter.
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
The ASRock Phantom Gaming PG-1600G leads on rated output at 1600W, ahead of the ASRock Steel Legend SL-1200G at 1200W. "Not listed" marks 8-pin PCIe connector count where the CORSAIR RM1000x and the ASRock Steel Legend SL-1200G leave the figure out.
| 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
The MSI MPG A1000GS PCIE5 II was the lowest-priced pick ($100 to $150) and the FSP Hydro Ti Pro 1000W the highest ($250 to $500) when we checked; tiers move with Amazon pricing.
| 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
Is the ASRock Phantom Gaming PG-1600G ahead of the ASRock Steel Legend SL-1200G on rated output?
The ASRock Phantom Gaming PG-1600G leads at 1600W, with the ASRock Steel Legend SL-1200G at 1200W. The spread runs down to the be quiet! Pure Power 13 M 1000W at 1000W.
How does the FSP Hydro Ti Pro 1000W compare with the ASRock Phantom Gaming PG-1600G on 8-pin PCIe connector count?
Between the top two, it is 8 on the ASRock Phantom Gaming PG-1600G against 5 on the FSP Hydro Ti Pro 1000W, a 60% difference. The MSI MPG A1000GS PCIE5 II closes the ranking at 3. The CORSAIR RM1000x and the ASRock Steel Legend SL-1200G are left out of this ranking because their 8-pin PCIe connector count isn't stated; 4 of 6 picks are ranked.
How does the ASRock Phantom Gaming PG-1600G compare with the FSP Hydro Ti Pro 1000W on depth?
Between the top two, it is 150mm on the FSP Hydro Ti Pro 1000W against 180mm on the ASRock Phantom Gaming PG-1600G, a 17% difference. The MSI MPG A1000GS PCIE5 II, the CORSAIR RM1000x, the be quiet! Pure Power 13 M 1000W and the ASRock Steel Legend SL-1200G are left out of this ranking because their depth isn't stated; 2 of 6 picks are ranked.
What does the FSP Hydro Ti Pro 1000W add over the MSI MPG A1000GS PCIE5 II?
What it brings is 8-pin PCIe connector count (5 against 3). It does not win everywhere: the MSI MPG A1000GS PCIE5 II still leads on native 12V-2x6 cable count (2). On our last price check the MSI MPG A1000GS PCIE5 II was in the $100 to $150 tier and the FSP Hydro Ti Pro 1000W in the $250 to $500 tier, with 4 other picks between them; pay the difference only if 8-pin PCIe connector count decides your purchase.
Why is the FSP Hydro Ti Pro 1000W our Most Efficient pick?
It earns the label for an 80 Plus Titanium rating with a 10-year warranty. The price of that: the MSI MPG A1000GS PCIE5 II, the cheapest pick, still beats it on native 12V-2x6 cable count (2 against 1). It suits long, heavy gaming sessions.
Do the MSI MPG A1000GS PCIE5 II and the FSP Hydro Ti Pro 1000W differ on 80 Plus rating?
The MSI MPG A1000GS PCIE5 II, the be quiet! Pure Power 13 M 1000W, the ASRock Steel Legend SL-1200G and the ASRock Phantom Gaming PG-1600G use Gold; the FSP Hydro Ti Pro 1000W uses titanium. The CORSAIR RM1000x has no 80 Plus rating listed, so 5 of 6 picks are covered here.
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.
Related Guides
- Related guideThe Best 1000W Power Supplies for High-End Gaming PCs
- Related guideThe Best 1200W Power Supplies for Flagship GPUs and Workstations
- Related guideThe Best PC Cases for the RTX 5090
- Lower budgetThe Best Power Supplies Under $75
- Similar guideThe Best Power Supplies for the RTX 4060 and 4060 Ti
- ExplainerHow to choose a power supply for a PC build
- Explainer80 Plus Ratings Explained
- Check compatibility: graphics cardsHow to Choose a Graphics Card for 1440p Gaming
- Similar guideThe Best Power Supplies for the RTX 4070 and 4070 Super
- Topic hubAll power supplies guides
About the author
PC Hardware Editor
Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.
Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility
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