Buying Guide
The Best Power Supplies for the RTX 4070 Ti Super
Six 750W and 850W units with native 12V-2x6 cables for the RTX 4070 Ti Super, compared on warranty, depth and price.
By Alex Morgan, PC Hardware Editor
12 min read6 products evaluated
NVIDIA recommends a 700W power supply for the RTX 4070 Ti Super, which uses a 16-pin 12V-2x6 connector. A 750W unit covers most builds, and 850W adds room for a high-power CPU.
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 a 4070 Ti Super
ASRock Phantom Gaming PG-750G750W with a 90-degree 12V-2x6 cable and a 10-year warranty.
Best for: Most RTX 4070 Ti Super builds.
Check price for ASRock Phantom Gaming PG-750G on Amazon (opens in a new tab)
Best Corsair Pick
CORSAIR RM750x (ATX 3.1)A fully modular ATX 3.1 unit with Cybenetics Gold.
Best for: Corsair builds.
Check price for CORSAIR RM750x (ATX 3.1) on Amazon (opens in a new tab)
Best Budget 750W
darkFlash DG750750W in a 140mm body with a native 12V-2x6 cable.
Best for: Keeping cost down.
Check price for darkFlash DG750 on Amazon (opens in a new tab)
Best Quiet 850W
Thermaltake Toughpower GT 850W850W with a Smart Zero Fan mode.
Best for: Quiet builds with headroom.
Check price for Thermaltake Toughpower GT 850W on Amazon (opens in a new tab)
Best Compact 850W
darkFlash DG850850W in a 140mm body.
Best for: Short PSU bays.
Check price for darkFlash DG850 on Amazon (opens in a new tab)
Best White Pick
ASRock Steel Legend SL-850GW WhiteA white 850W unit with a 10-year warranty.
Best for: White builds.
Check price for ASRock Steel Legend SL-850GW White on Amazon (opens in a new tab)
Our Picks
Best Match for a 4070 Ti Super1 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
- Most RTX 4070 Ti Super builds.
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 CORSAIR RM750x and the darkFlash DG750 on rated output (750W).
On warranty it ties with the ASRock Steel Legend SL-850GW White at 10 years. It shares a platinum cybenetics rating with the ASRock Steel Legend SL-850GW White; the CORSAIR RM750x goes with a gold cybenetics rating. It was priced above the darkFlash DG850 and below the Thermaltake Toughpower GT 850W 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
Best Corsair Pick2 of 6
CORSAIR RM750x (ATX 3.1)
Corsair's RM750x is a fully modular ATX 3.1 unit with a native 12V-2x6 cable and a Cybenetics Gold rating.
Best for
- Corsair builds.
Skip if
- Pass if a published warranty matters; this one has none.
Why we like it
It is Cybenetics Gold rated at up to 91% efficiency, and its embossed cables with low-profile combs are easy to route. It matches the ASRock Phantom Gaming PG-750G and the darkFlash DG750 on rated output (750W). You get a gold cybenetics rating here, which sets it apart from the ASRock Steel Legend SL-850GW White and its a platinum cybenetics rating.
The CORSAIR RM750x comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the CORSAIR RM750x, so check the maker's page against your case's PSU bay. Only the ASRock Steel Legend SL-850GW White 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
- Cybenetics 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
- ATX 3.1 compliance
- Fully modular cables
Cons
- No published warranty
- No published depth
- Costs more than the darkFlash DG750 at the time of writing
The catch
There is no published warranty figure, whereas the ASRock Phantom Gaming PG-750G offers 10 years.
Best Budget 750W3 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
- Keeping cost down.
Skip if
- Look at the others if this bothers you: a shorter 5-year warranty.
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 ASRock Phantom Gaming PG-750G and the CORSAIR RM750x at 750W. It matches the Thermaltake Toughpower GT 850W and the darkFlash DG850 on warranty (5 years). On depth it ties with the darkFlash DG850 at 140mm.
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 darkFlash DG850 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
- Rated output trails the Thermaltake Toughpower GT 850W (850W)
The catch
If rated output is your priority, the Thermaltake Toughpower GT 850W (850W) is the stronger choice.
Best Quiet 850W4 of 6
Thermaltake Toughpower GT 850W
Thermaltake's Toughpower GT 850W is a fully modular ATX 3.1 unit with a native 12V-2x6 cable, a single high-amperage 12V rail and a Smart Zero Fan mode.
Best for
- Quiet builds with headroom.
Skip if
- Choose another pick if you can't accept this: a shorter 5-year warranty.
Why we like it
Smart Zero Fan keeps the fan off at low load, and its low-profile flat black cables are easy to route. It is 80 Plus Gold rated at up to 90% efficiency. On rated output it ties with the darkFlash DG850 and the ASRock Steel Legend SL-850GW White at 850W.
It matches the darkFlash DG750 and the darkFlash DG850 on warranty (5 years). The Thermaltake Toughpower GT 850W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the Thermaltake Toughpower GT 850W, so check the maker's page against your case's PSU bay. Its price falls between the ASRock Phantom Gaming PG-750G and the ASRock Steel Legend SL-850GW White, based on our last check.
Key specs
- Wattage
- 850W
- Native 12V-2x6 cables
- 1
- Warranty
- 5 years
- 80 Plus rating
- Gold
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Fan stop
- Yes
- Colour
- Black
Pros
- A 850W rating
- A native 12V-2x6 cable for 16-pin cards
- ATX 3.1 compliance
- Fully modular cables
Cons
- A shorter 5-year warranty
- No published depth
- Costs more than the darkFlash DG750 at the time of writing
The catch
Buyers who need a confirmed depth should compare it with the darkFlash DG750, which comes in at 140mm.
Best Compact 850W5 of 6
darkFlash DG850
darkFlash's DG850 fits 850W into a 140mm body, with a native 12V-2x6 cable and fully modular cables.
Best for
- Short PSU bays.
Skip if
- Pass on it if a shorter 5-year warranty rules it out for your setup.
Why we like it
Its warranty is 5 years. It is fully modular with a quiet HDB fan, and it carries a 5-year limited warranty with built-in protections. Its 850W output suits high-end CPU and GPU builds.
On rated output it ties with the Thermaltake Toughpower GT 850W and the ASRock Steel Legend SL-850GW White at 850W. It matches the darkFlash DG750 and the Thermaltake Toughpower GT 850W on warranty (5 years). On depth it ties with the darkFlash DG750 at 140mm.
It also comes with multi-protection circuitry. The darkFlash DG850 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. Its price falls between the darkFlash DG750 and the ASRock Phantom Gaming PG-750G, based on our last check.
Key specs
- Wattage
- 850W
- 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 850W 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 ASRock Phantom Gaming PG-750G (10 years)
- Costs more than the darkFlash DG750 at the time of writing
The catch
If warranty is your priority, the ASRock Phantom Gaming PG-750G (10 years) is the stronger choice.
Best White Pick6 of 6
ASRock Steel Legend SL-850GW White
ASRock's Steel Legend SL-850GW is a white 850W unit, 150mm deep, with a dual-color 12V-2x6 cable and a 10-year warranty.
Best for
- White builds.
Skip if
- Skip it if depth matters most to you; the darkFlash DG750 offers 140mm.
Why we like it
Its compact 150mm-deep body helps in smaller cases, and iCOOL fan control adjusts speed to load. The white finish suits light builds. On rated output it ties with the Thermaltake Toughpower GT 850W and the darkFlash DG850 at 850W.
It matches the ASRock Phantom Gaming PG-750G on warranty (10 years). On depth it ties with the ASRock Phantom Gaming PG-750G at 150mm. Like the ASRock Phantom Gaming PG-750G, it has a platinum cybenetics rating, while the CORSAIR RM750x uses a gold cybenetics rating.
A white colour is unique to it among these picks, while the darkFlash DG750 uses a black colour. The ASRock Steel Legend SL-850GW White comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. At 150mm deep, compare it with your case's PSU clearance before buying. Its price falls between the Thermaltake Toughpower GT 850W and the CORSAIR RM750x, based on our last check.
Key specs
- Wattage
- 850W
- 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
- Fan
- 135mm
- Colour
- White
Pros
- A 850W rating
- A native 12V-2x6 cable for 16-pin cards
- A 10-year warranty
- ATX 3.1 compliance
Cons
- Depth trails the darkFlash DG750 (140mm)
- Costs more than the darkFlash DG750 at the time of writing
The catch
If native 12V-2x6 cable count is your priority, the ASRock Phantom Gaming PG-750G (1) is the stronger choice.
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 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: 1 of 6 picks leave out warranty.
- The shared baseline
- All 6, from the ASRock Phantom Gaming PG-750G to the ASRock Steel Legend SL-850GW White, state rated output, native 12V-2x6 cable count and ATX version and share ATX 3.1 ATX version and Fully modular cabling.
- Where the specs have gaps
- The CORSAIR RM750x gives no warranty; the CORSAIR RM750x and the Thermaltake Toughpower GT 850W give no depth.
- Price range
- At our last check the picks ran from the darkFlash DG750 ($50 to $100) to the CORSAIR RM750x ($100 to $150).
What to Look for in a PSUs for RTX 4070 Ti Super
Key buying criteria so you get the right fit the first time.
How much rated output you need
The Thermaltake Toughpower GT 850W tops rated output at 850W and the darkFlash DG750 sits lowest at 750W; 3 picks share the top figure. For less, the darkFlash DG850 is the runner-up at 850W.
Warranty across these picks
Across these 5 picks warranty spans 5 years (the darkFlash DG850) to 10 years (the ASRock Phantom Gaming PG-750G). If warranty is your first filter, the ASRock Phantom Gaming PG-750G sets the ceiling at 10 years. The CORSAIR RM750x gives no warranty figure, so 5 of 6 picks are compared here.
A 24-pin ATX connector seen from the pin side Depth across these picks
Here depth runs from 150mm on the ASRock Steel Legend SL-850GW White to 140mm on the darkFlash DG750, a 7% spread. If depth is your first filter, the darkFlash DG750 sets the ceiling at 140mm. The CORSAIR RM750x and the Thermaltake Toughpower GT 850W give no depth figure, so 4 of 6 picks are compared here.
Setup checks
The ASRock Phantom Gaming PG-750G 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 Thermaltake Toughpower GT 850W: a single high-amperage 12V rail. The darkFlash DG850: multi-protection circuitry. The ASRock Steel Legend SL-850GW White: a 10-year warranty on a white unit.
How to Choose a PSUs for RTX 4070 Ti Super
By priority
| Priority | Consider | Why |
|---|---|---|
| Most RTX 4070 Ti Super builds | ASRock Phantom Gaming PG-750G | 750W with a 90-degree 12V-2x6 cable and a 10-year warranty |
| Corsair builds | CORSAIR RM750x | A fully modular ATX 3.1 unit with Cybenetics Gold |
| Keeping cost down | darkFlash DG750 | 750W in a 140mm body with a native 12V-2x6 cable |
| Quiet builds with headroom | Thermaltake Toughpower GT 850W | 850W with a Smart Zero Fan mode |
| Short PSU bays | darkFlash DG850 | 850W in a 140mm body |
| White builds | ASRock Steel Legend SL-850GW White | A white 850W unit with a 10-year warranty |
Scroll sideways to see every column.
Key specs side by side
The Thermaltake Toughpower GT 850W leads on rated output at 850W, ahead of the darkFlash DG850 at 850W. "Not listed" marks warranty where the CORSAIR RM750x leaves the figure out.
| Power supplie | Wattage | Native 12V-2x6 cables | Warranty | Depth |
|---|---|---|---|---|
| ASRock Phantom Gaming PG-750G | 750W | 1 | 10 years | 150mm |
| CORSAIR RM750x | 750W | 1 | Not listed | Not listed |
| darkFlash DG750 | 750W | 1 | 5 years | 140mm |
| Thermaltake Toughpower GT 850W | 850W | 1 | 5 years | Not listed |
| darkFlash DG850 | 850W | 1 | 5 years | 140mm |
| ASRock Steel Legend SL-850GW White | 850W | 1 | 10 years | 150mm |
Scroll sideways to see every column.
By price at the time of writing
At our last check the cheapest pick, the darkFlash DG750, sat in the $50 to $100 tier, 2 tiers in all up to the CORSAIR RM750x at $100 to $150; Amazon prices move, so recheck before buying.
| Price tier | Power supplies |
|---|---|
| About $50 to $100 | darkFlash DG750, darkFlash DG850, ASRock Phantom Gaming PG-750G, Thermaltake Toughpower GT 850W, ASRock Steel Legend SL-850GW White |
| About $100 to $150 | CORSAIR RM750x |
Frequently Asked Questions
What makes the darkFlash DG850 the Best Compact 850W?
The label rests on 850W in a 140mm body. It suits short PSU bays.
Do the ASRock Phantom Gaming PG-750G and the CORSAIR RM750x differ on cybenetics rating?
The ASRock Phantom Gaming PG-750G and the ASRock Steel Legend SL-850GW White use platinum; the CORSAIR RM750x uses Gold. The makers of the darkFlash DG750, the Thermaltake Toughpower GT 850W and the darkFlash DG850 don't state cybenetics rating, so 3 of 6 picks are covered here.
What should I check before buying the CORSAIR RM750x?
The CORSAIR RM750x comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the CORSAIR RM750x, so check the maker's page against your case's PSU bay. In this guide it ranks second of 6, as our Best Corsair Pick, and fifth of 6 on rated output (750W).
Beyond the specs, what sets the ASRock Phantom Gaming PG-750G and the CORSAIR RM750x apart?
The ASRock Phantom Gaming PG-750G: a 90-degree 12V-2x6 cable with a temperature sensor. The CORSAIR RM750x: embossed cables with low-profile combs. The darkFlash DG750: a 140mm body that leaves room for cables.
Who should choose the ASRock Phantom Gaming PG-750G?
The ASRock Phantom Gaming PG-750G carries our Best Match for a 4070 Ti Super label for 750W with a 90-degree 12V-2x6 cable and a 10-year warranty. It ranks first of 6 here and sat in the $50 to $100 tier at our last price check; it suits most RTX 4070 Ti Super builds.
Bottom Line
ASRock's PG-750G is the best-matched unit for an RTX 4070 Ti Super here. Corsair's RM750x is the fully modular alternative, darkFlash's DG750 is the budget pick, and the 850W units add headroom.
Related Guides
- Related guideThe Best Power Supplies for the RTX 4070 Ti and Ti Super
- Related guideThe Best 750W Power Supplies for Upper Mid-Range Gaming PCs
- Related guideThe Best RTX 4070 Ti Super Graphics Cards
- Lower budgetThe Best Power Supplies Under $75
- Similar guideThe Best Power Supplies for the RTX 4070 Super
- ExplainerHow to choose a power supply for a PC build
- Explainer80 Plus Ratings Explained
- Check compatibility: graphics cardsGPU Power Connectors Explained
- 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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