Buying Guide
The Best Power Supplies for the RTX 4070 Super
Six 650W and 750W units with native 12V-2x6 cables for the RTX 4070 Super, which NVIDIA pairs with 650W.
By Alex Morgan, PC Hardware Editor
12 min read6 products evaluated
NVIDIA recommends a 650W power supply for the RTX 4070 Super. Most partner cards use a 16-pin 12V-2x6 connector, so a native cable avoids the adapter in the box.
We compared wattage, connectors and ratings from the power supply listings against NVIDIA'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 4070 Super
MONTECH Century II 650W650W with a native 12V-2x6 and a 10-year warranty.
Best for: Most RTX 4070 Super builds.
Check price for MONTECH Century II 650W on Amazon (opens in a new tab)
Best Warranty at 750W
MSI MAG A750GL PCIE5A 10-year warranty on a fully modular 750W unit.
Best for: Long-term builds.
Check price for MSI MAG A750GL PCIE5 on Amazon (opens in a new tab)
Best White Pick
SAMA GT650 WhiteA white fully modular 650W unit.
Best for: White builds.
Check price for SAMA GT650 White on Amazon (opens in a new tab)
Most Efficient 750W
be quiet! Pure Power 13 M 750WCybenetics Platinum with four PCIe 8-pin connectors.
Best for: Quiet builds.
Check price for be quiet! Pure Power 13 M 750W on Amazon (opens in a new tab)
Best Compact 750W
darkFlash DG750750W in a 140mm body.
Best for: Short PSU bays.
Check price for darkFlash DG750 on Amazon (opens in a new tab)
Best Cable Routing
ASRock Phantom Gaming PG-750GA 90-degree 12V-2x6 cable with a temperature sensor.
Best for: Tight cable runs beside the side panel.
Check price for ASRock Phantom Gaming PG-750G on Amazon (opens in a new tab)
Our Picks
Best Match for an RTX 4070 Super1 of 6
MONTECH Century II 650W
Montech's Century II 650W brings a native 12V-2x6 cable, fully modular cables and a 10-year warranty to a low-cost 80 Plus Gold unit.
Best for
- Most RTX 4070 Super builds.
Skip if
- If budget leads, the darkFlash DG750 was cheaper at our last price check.
Why we like it
Its 135mm FDB fan has a zero RPM mode, and it uses 100% Japanese capacitors. It matches the SAMA GT650 White on rated output (650W). On warranty it ties with the MSI MAG A750GL PCIE5 and the ASRock Phantom Gaming PG-750G at 10 years.
The MONTECH Century II 650W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the MONTECH Century II 650W, so check the maker's page against your case's PSU bay. When we checked, only the SAMA GT650 White and cheaper picks cost less, and the ASRock Phantom Gaming PG-750G cost more. If you want a confirmed depth, look to the darkFlash DG750 instead: it comes in at 140mm, while this one gives no figure.
Key specs
- Wattage
- 650W
- Native 12V-2x6 cables
- 1
- Warranty
- 10 years
- 80 Plus rating
- Gold
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Fan
- 135mm
- Fan stop
- Yes
- Colour
- Black
Pros
- A 650W rating
- A native 12V-2x6 cable for 16-pin cards
- A 10-year warranty
- ATX 3.1 compliance
Cons
- Costs more than the darkFlash DG750 at the time of writing
Best Warranty at 750W2 of 6
MSI MAG A750GL PCIE5
MSI's MAG A750GL PCIE5 is a fully modular 750W unit with a native 12V-2x6 cable and a 10-year warranty, in a compact body.
Best for
- Long-term builds.
Skip if
- If budget leads, the darkFlash DG750 was cheaper at our last price check.
Why we like it
It is 80 Plus Gold rated and carries a 10-year limited warranty. It is fully modular, rated 80 Plus Gold, ATX 3.1 with PCIe 5.1, and carries a 10-year warranty. The cable is a native dual-color 12V-2x6 for 16-pin graphics cards, and the unit is ATX 3.1 and PCIe 5.1 ready.
It matches the be quiet! Pure Power 13 M 750W, the darkFlash DG750 and the ASRock Phantom Gaming PG-750G on rated output (750W). On warranty it ties with the MONTECH Century II 650W and the ASRock Phantom Gaming PG-750G at 10 years. It also offers a compact body MSI markets for easier fitting.
No depth is rated for the MSI MAG A750GL PCIE5, so check the maker's page against your case's PSU bay. Only the be quiet! Pure Power 13 M 750W came close to it on price at the time of writing; it cost the most of the 6 picks.
Key specs
- Wattage
- 750W
- Native 12V-2x6 cables
- 1
- Warranty
- 10 years
- 80 Plus rating
- Gold
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Colour
- Black
Pros
- A 750W rating
- A native 12V-2x6 cable for 16-pin cards
- A 10-year warranty
- ATX 3.1 compliance
Cons
- Costs more than the darkFlash DG750 at the time of writing
The catch
There is no published depth figure, whereas the darkFlash DG750 comes in at 140mm.
Best White Pick3 of 6
SAMA GT650 White
SAMA's GT650 White is a fully modular white unit with embossed white cables, a native 12V-2x6 cable and an ECO silent mode.
Best for
- White builds.
Skip if
- Skip it if rated output matters most to you; the MSI MAG A750GL PCIE5 offers 750W.
Why we like it
Japanese capacitors support long-term durability, and a native 12V-2x6 connector feeds current graphics cards. It is 80 Plus Gold rated. It matches the MONTECH Century II 650W on rated output (650W).
No other pick in this guide offers a white colour; compare the MONTECH Century II 650W, which has a black colour. The SAMA GT650 White comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the SAMA GT650 White, so check the maker's page against your case's PSU bay.
It was priced above the darkFlash DG750 and below the MONTECH Century II 650W at the time of writing. It gives ground on rated output, where the MSI MAG A750GL PCIE5 offers 750W.
Key specs
- Wattage
- 650W
- Native 12V-2x6 cables
- 1
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Fan
- 120mm
- Fan stop
- Yes
- Colour
- White
Pros
- A 650W rating
- A native 12V-2x6 cable for 16-pin cards
- ATX 3.1 compliance
- Fully modular cables
Cons
- Rated output trails the MSI MAG A750GL PCIE5 (750W)
- No published warranty
- Costs more than the darkFlash DG750 at the time of writing
Most Efficient 750W4 of 6
be quiet! Pure Power 13 M 750W
be quiet!'s Pure Power 13 M 750W offers four PCIe 8-pin connectors plus a native 12V-2x6, and its fan switches off at low load.
Best for
- Quiet builds.
Skip if
- Pass if a published warranty matters; this one has none.
Why we like it
Cybenetics rates it Platinum. Its fan stops completely at low load, and one strong 12V rail handles GPU power spikes. LLC topology gives tight voltage regulation.
It is 80 Plus Gold with up to 94.3% efficiency and an ATX 3.1 design with a native 12V-2x6 connector. All 750W sit on a single 12V rail, which handles short GPU power spikes. It matches the MSI MAG A750GL PCIE5, the darkFlash DG750 and the ASRock Phantom Gaming PG-750G on rated output (750W). No depth is rated for the be quiet! Pure Power 13 M 750W, so check the maker's page against your case's PSU bay.
Key specs
- Wattage
- 750W
- 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
- A 750W rating
- A native 12V-2x6 cable for 16-pin cards
- 4 PCIe 8-pin connectors for older cards
- ATX 3.1 compliance
Cons
- No published warranty
- Costs more than the darkFlash DG750 at the time of writing
The catch
There is no published warranty figure, whereas the MONTECH Century II 650W offers 10 years.
Best Compact 750W5 of 6
darkFlash DG750
darkFlash's DG750 is a 140mm-deep 80 Plus Gold unit with a native 12V-2x6 cable and a hydraulic-bearing fan.
Best for
- Short PSU bays.
Skip if
- Worth skipping when a shorter 5-year warranty is a problem.
Why we like it
Its warranty is 5 years. It is fully modular with a quiet HDB fan, 80 Plus Gold rated, and backed by a 5-year limited warranty. Its fully modular cables reduce clutter for first-time builders.
On rated output it ties with the MSI MAG A750GL PCIE5, the be quiet! Pure Power 13 M 750W and the ASRock Phantom Gaming PG-750G at 750W. Its 5 years warranty is the shortest in this group; the MONTECH Century II 650W leads at 10 years. It also comes with a 140mm body that leaves room for cables.
The darkFlash DG750 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 was the cheapest of the group when we checked; the SAMA GT650 White was the next step up.
Key specs
- Wattage
- 750W
- Native 12V-2x6 cables
- 1
- Warranty
- 5 years
- Depth
- 140mm
- 80 Plus rating
- Gold
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Colour
- Black
Pros
- A 750W rating
- A native 12V-2x6 cable for 16-pin cards
- A short 140mm body
- ATX 3.1 compliance
Cons
- A shorter 5-year warranty
- Warranty trails the MONTECH Century II 650W (10 years)
The catch
If warranty is your priority, the MONTECH Century II 650W (10 years) is the stronger choice.
Best Cable Routing6 of 6
ASRock Phantom Gaming PG-750G
ASRock's Phantom Gaming PG-750G has a 90-degree 12V-2x6 cable with a temperature sensor, braided cables and a 10-year warranty.
Best for
- Tight cable runs beside the side panel.
Skip if
- Price-first buyers should look at the darkFlash DG750, which cost less when we checked.
Why we like it
It is 150mm deep and rated Cybenetics Platinum. It is fully modular with braided cables and a 90-degree PCIe 5.1 connector that has a temperature sensor. ASRock rates its efficiency 2% above the Gold standard.
The 12V-2x6 cable is dual-color and rated to 105 degrees C, and ASRock lists iCOOL intelligent fan control and 220% total power excursion. It measures 5.91 x 5.91 x 3.39 inches, and ASRock notes it is not compatible with all prebuilt systems. It matches the MSI MAG A750GL PCIE5, the be quiet! Pure Power 13 M 750W and the darkFlash DG750 on rated output (750W).
On warranty it ties with the MONTECH Century II 650W and the MSI MAG A750GL PCIE5 at 10 years. It was priced above the MONTECH Century II 650W and below the be quiet! Pure Power 13 M 750W at the time of writing.
Key specs
- Wattage
- 750W
- Native 12V-2x6 cables
- 1
- Warranty
- 10 years
- Depth
- 150mm
- 80 Plus rating
- Gold
- Cybenetics rating
- Platinum
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Colour
- Black
Pros
- A 750W rating
- A native 12V-2x6 cable for 16-pin cards
- A 10-year warranty
- ATX 3.1 compliance
Cons
- Costs more than the darkFlash DG750 at the time of writing
The catch
It gives ground on native 12V-2x6 cable count, where the MONTECH Century II 650W offers 1.
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.
- The figures behind the order
- We compared six power supplies on rated output, native 12V-2x6 cable count, warranty and depth, using each maker's published specs. These are research figures, not bench results: 2 of 6 picks leave out warranty.
- The shared baseline
- All 6, from the MONTECH Century II 650W to the ASRock Phantom Gaming PG-750G, state rated output, native 12V-2x6 cable count and ATX version and share ATX 3.1 ATX version.
- Where the specs have gaps
- The SAMA GT650 White and the be quiet! Pure Power 13 M 750W give no warranty; the MONTECH Century II 650W, the MSI MAG A750GL PCIE5, the SAMA GT650 White and the be quiet! Pure Power 13 M 750W give no depth.
- Price range
- From the darkFlash DG750 to the MSI MAG A750GL PCIE5, all sat in the $50 to $100 tier when we checked.
What to Look for in a PSUs for RTX 4070 Super
Key buying criteria so you get the right fit the first time.
Rated output across these picks
Across these 6 picks rated output spans 650W (the SAMA GT650 White) to 750W (the MSI MAG A750GL PCIE5). For less, the be quiet! Pure Power 13 M 750W is the runner-up at 750W.
Warranty
Here warranty runs from 5 years on the darkFlash DG750 to 10 years on the MONTECH Century II 650W, a 100% spread. Start with the MONTECH Century II 650W if warranty decides it. The SAMA GT650 White and the be quiet! Pure Power 13 M 750W give no warranty figure, so 4 of 6 picks are compared here.
A 24-pin ATX connector seen from the pin side Depth
The darkFlash DG750 tops depth at 140mm and the ASRock Phantom Gaming PG-750G sits lowest at 150mm. Start with the darkFlash DG750 if depth decides it. The MONTECH Century II 650W, the MSI MAG A750GL PCIE5, the SAMA GT650 White and the be quiet! Pure Power 13 M 750W give no depth figure, so 2 of 6 picks are compared here.
Setup checks
The MONTECH Century II 650W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter.
An 8-pin power connector held up to the camera Features beyond the spec table
The be quiet! Pure Power 13 M 750W: a fan that switches off completely at low load. The darkFlash DG750: a hydraulic-bearing fan. The ASRock Phantom Gaming PG-750G: individually braided cables.
How to Choose a PSUs for RTX 4070 Super
By priority
| Priority | Consider | Why |
|---|---|---|
| Most RTX 4070 Super builds | MONTECH Century II 650W | 650W with a native 12V-2x6 and a 10-year warranty |
| Long-term builds | MSI MAG A750GL PCIE5 | A 10-year warranty on a fully modular 750W unit |
| White builds | SAMA GT650 White | A white fully modular 650W unit |
| Quiet builds | be quiet! Pure Power 13 M 750W | Cybenetics Platinum with four PCIe 8-pin connectors |
| Short PSU bays | darkFlash DG750 | 750W in a 140mm body |
| Tight cable runs beside the side panel | ASRock Phantom Gaming PG-750G | A 90-degree 12V-2x6 cable with a temperature sensor |
Scroll sideways to see every column.
Key specs side by side
The MSI MAG A750GL PCIE5 leads on rated output at 750W, ahead of the be quiet! Pure Power 13 M 750W at 750W. "Not listed" marks warranty where the SAMA GT650 White and the be quiet! Pure Power 13 M 750W leave the figure out.
| Power supplie | Wattage | Native 12V-2x6 cables | Warranty | Depth |
|---|---|---|---|---|
| MONTECH Century II 650W | 650W | 1 | 10 years | Not listed |
| MSI MAG A750GL PCIE5 | 750W | 1 | 10 years | Not listed |
| SAMA GT650 White | 650W | 1 | Not listed | Not listed |
| be quiet! Pure Power 13 M 750W | 750W | 1 | Not listed | Not listed |
| darkFlash DG750 | 750W | 1 | 5 years | 140mm |
| ASRock Phantom Gaming PG-750G | 750W | 1 | 10 years | 150mm |
Scroll sideways to see every column.
Frequently Asked Questions
Which has the shallowest depth: the darkFlash DG750 or the ASRock Phantom Gaming PG-750G?
Between the top two, it is 140mm on the darkFlash DG750 against 150mm on the ASRock Phantom Gaming PG-750G, a 7% difference. The MONTECH Century II 650W, the MSI MAG A750GL PCIE5, the SAMA GT650 White and the be quiet! Pure Power 13 M 750W are left out of this ranking because their depth isn't stated; 2 of 6 picks are ranked.
Is the MSI MAG A750GL PCIE5 worth paying more than the darkFlash DG750?
What it brings is warranty (10 years against 5 years). Both sat in the $50 to $100 tier when we checked, so the gains in warranty cost little extra by tier.
What makes the MONTECH Century II 650W the Best Match for an RTX 4070 Super?
The label rests on 650W with a native 12V-2x6 and a 10-year warranty. It gives up rated output (650W against 750W) to the darkFlash DG750, the cheapest pick. It suits most RTX 4070 Super builds.
Which of these power supplies have fan stop?
The MONTECH Century II 650W, the SAMA GT650 White and the be quiet! Pure Power 13 M 750W have it. The makers of the MSI MAG A750GL PCIE5, the darkFlash DG750 and the ASRock Phantom Gaming PG-750G don't state fan stop, so 3 of 6 picks are covered here.
What should I check before buying the be quiet! Pure Power 13 M 750W?
The be quiet! Pure Power 13 M 750W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the be quiet! Pure Power 13 M 750W, so check the maker's page against your case's PSU bay. In this guide it ranks fourth of 6, as our Most Efficient 750W pick, and second of 6 on rated output (750W).
Beyond the specs, what sets the MONTECH Century II 650W and the MSI MAG A750GL PCIE5 apart?
The MONTECH Century II 650W: a 10-year warranty at a low price. The MSI MAG A750GL PCIE5: a 10-year limited warranty. The SAMA GT650 White: an ECO silent mode for low-load quiet.
Bottom Line
Montech's Century II 650W is the best-matched unit for an RTX 4070 Super, with a 10-year warranty. MSI's A750GL adds headroom with the same warranty length, and SAMA's GT650 White suits white builds.
Related Guides
- Related guideThe Best Power Supplies for the RTX 4070 and 4070 Super
- Related guideThe Best 650W Power Supplies for Mid-Range Gaming PCs
- Related guideThe Best RTX 4070 Super Graphics Cards
- Lower budgetThe Best Power Supplies Under $75
- Similar guideThe Best Power Supplies for the RTX 4070 Ti Super
- 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 Ti and Ti 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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