Buying Guide
The Best 80 Plus Platinum Power Supplies
Six 80 Plus Platinum units in ATX, SFX and SFX-L sizes from 750W to 1200W, compared on warranty, size and price.
By Alex Morgan, PC Hardware Editor
12 min read6 products evaluated
80 Plus Platinum units waste less power as heat than Gold ones, which matters most at high load and in small cases. They cost more, so the gain is usually quieter running rather than a lower power bill.
We compared wattage, efficiency ratings, connectors and warranty from each listing; 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 Value Platinum
be quiet! Power Zone 2 850WPlatinum from both 80 Plus and Cybenetics at 850W.
Best for: Most high-end builds.
Check price for be quiet! Power Zone 2 850W on Amazon (opens in a new tab)
Best 1200W Platinum
Super Flower Leadex VII XP PRO 1200W1200W with dual Platinum ratings.
Best for: Flagship GPUs.
Check price for Super Flower Leadex VII XP PRO 1200W on Amazon (opens in a new tab)
Best Warranty
ASUS ROG Strix 1000W PlatinumA 10-year warranty on a 1000W Platinum unit.
Best for: Long-term builds.
Check price for ASUS ROG Strix 1000W Platinum on Amazon (opens in a new tab)
Best SFX-L
ASUS ROG Loki SFX-L 750W PlatinumSFX-L Platinum with a 120mm fan.
Best for: Small cases with SFX-L room.
Check price for ASUS ROG Loki SFX-L 750W Platinum on Amazon (opens in a new tab)
Best 750W SFX
CORSAIR SF750 (2024)750W Platinum in SFX size.
Best for: Mini-ITX builds.
Check price for CORSAIR SF750 (2024) on Amazon (opens in a new tab)
Most Power in SFX
LIAN LI SP1000P1000W Platinum in a 100mm SFX body.
Best for: High-end small builds.
Check price for LIAN LI SP1000P on Amazon (opens in a new tab)
Our Picks
Best Value Platinum1 of 6
be quiet! Power Zone 2 850W
be quiet!'s Power Zone 2 850W is rated Platinum by both 80 Plus and Cybenetics.
Best for
- Most high-end builds.
Skip if
- Choose another pick if you can't accept this: rated output of 850W, behind the Super Flower Leadex VII XP PRO 1200W (1200W).
Why we like it
Its 140mm Pure Wings 3 fan stops at low load, and it has a native 12V-2x6 cable. Its 850W rated output ranks fourth of 6 here, behind the Super Flower Leadex VII XP PRO 1200W (1200W) and ahead of the CORSAIR SF750 (750W). The be quiet! Power Zone 2 850W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter.
It also has 3 PCIe 8-pin connectors for cards that use 8-pin power. No depth is rated for the be quiet! Power Zone 2 850W, so check the maker's page against your case's PSU bay. It cost the least of the 6 picks at the time of writing, with the ASUS ROG Loki SFX-L 750W Platinum the next step up.
Key specs
- Wattage
- 850W
- Native 12V-2x6 cables
- 1
- PCIe 8-pin connectors
- 3
- 80 Plus rating
- Platinum
- Cybenetics rating
- Platinum
- ATX version
- ATX 3.1
- Form factor
- ATX
- Fan
- 140mm
- Fan stop
- Yes
- Colour
- Black
Pros
- A 850W rating
- A native 12V-2x6 cable for 16-pin cards
- 80 Plus Platinum efficiency
- ATX 3.1 compliance
Cons
- Rated output of 850W, behind the Super Flower Leadex VII XP PRO 1200W (1200W)
The catch
There is no published warranty figure, whereas the ASUS ROG Strix 1000W Platinum offers 10 years.
Best 1200W Platinum2 of 6
Super Flower Leadex VII XP PRO 1200W
Super Flower's Leadex VII XP PRO 1200W carries Platinum ratings from both 80 Plus and Cybenetics.
Best for
- Flagship GPUs.
Skip if
- If budget leads, the be quiet! Power Zone 2 850W was cheaper at our last price check.
Why we like it
The maker specifies voltage regulation within 0.5% on the main rails and flexible ribbon cables. It is Cybenetics Platinum and 80 Plus Platinum, and all cables are ribbon-style for flexibility. Its 1200W rated output is the highest here; the ASUS ROG Strix 1000W Platinum comes next at 1000W.
The Super Flower Leadex VII XP PRO 1200W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. No depth is rated for the Super Flower Leadex VII XP PRO 1200W, so check the maker's page against your case's PSU bay. Its price falls between the LIAN LI SP1000P and the ASUS ROG Strix 1000W Platinum, based on our last check. Buyers who need a confirmed warranty should compare it with the ASUS ROG Strix 1000W Platinum, which offers 10 years.
Key specs
- Wattage
- 1200W
- Native 12V-2x6 cables
- 1
- 80 Plus rating
- Platinum
- Cybenetics rating
- Platinum
- Form factor
- ATX
- Cabling
- Fully modular
- Colour
- Black
Pros
- 1200W of rated output for high-power cards
- A native 12V-2x6 cable for 16-pin cards
- 80 Plus Platinum efficiency
- Fully modular cables
Cons
- Costs more than the be quiet! Power Zone 2 850W at the time of writing
Best Warranty3 of 6
ASUS ROG Strix 1000W Platinum
ASUS's ROG Strix 1000W Platinum uses GaN MOSFETs and GPU-first voltage sensing on the graphics card rail.
Best for
- Long-term builds.
Skip if
- Price-first buyers should look at the be quiet! Power Zone 2 850W, which cost less when we checked.
Why we like it
It carries a Cybenetics LAMBDA A noise rating and a 10-year warranty. GaN MOSFETs raise efficiency, large ROG heatsinks cut temperatures and noise, and 0dB mode keeps it silent during light gaming. On rated output it ties with the LIAN LI SP1000P at 1000W.
The ASUS ROG Strix 1000W Platinum has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card. No depth is rated for the ASUS ROG Strix 1000W Platinum, so check the maker's page against your case's PSU bay. It was the most expensive pick when we checked, so weigh what it adds over the Super Flower Leadex VII XP PRO 1200W. Buyers who need a confirmed native 12V-2x6 cable count should compare it with the be quiet! Power Zone 2 850W, which offers 1.
Key specs
- Wattage
- 1000W
- Warranty
- 10 years
- 80 Plus rating
- Platinum
- ATX version
- ATX 3.1
- Form factor
- ATX
- Cabling
- Fully modular
- Fan stop
- Yes
- Colour
- Black
Pros
- 1000W of rated output for high-power cards
- A 10-year warranty
- 80 Plus Platinum efficiency
- ATX 3.1 compliance
Cons
- Costs more than the be quiet! Power Zone 2 850W at the time of writing
Best SFX-L4 of 6
ASUS ROG Loki SFX-L 750W Platinum
The ROG Loki is an SFX-L unit, so it uses a 120mm fan instead of the 92mm fan common in SFX.
Best for
- Small cases with SFX-L room.
Skip if
- Skip it if price comes first: the be quiet! Power Zone 2 850W cost less when we checked.
Why we like it
It carries 80 Plus Platinum, a LAMBDA A noise rating and a 10-year warranty. It is Lambda A certified at under 25dB, and a 16-pin cable delivers up to 600W to PCIe 5.0 cards. ROG heatsinks cool key parts.
On rated output it ties with the CORSAIR SF750 at 750W. It also comes with a 120mm fan, larger than standard SFX and ROG heatsinks over key components. The ASUS ROG Loki SFX-L 750W Platinum has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card.
No depth is rated for the ASUS ROG Loki SFX-L 750W Platinum, so check the maker's page against your case's PSU bay. Its price falls between the be quiet! Power Zone 2 850W and the CORSAIR SF750, based on our last check.
Key specs
- Wattage
- 750W
- Warranty
- 10 years
- 80 Plus rating
- Platinum
- Form factor
- SFX-L
- Cabling
- Fully modular
- Fan
- 120mm
- Colour
- Black
Pros
- A 750W rating
- A 10-year warranty
- 80 Plus Platinum efficiency
- Fully modular cables
Cons
- Costs more than the be quiet! Power Zone 2 850W at the time of writing
The catch
Buyers who need a confirmed native 12V-2x6 cable count should compare it with the be quiet! Power Zone 2 850W, which offers 1.
Best 750W SFX5 of 6
CORSAIR SF750 (2024)
Corsair's 2024 SF750 is a fully modular 80 Plus Platinum SFX unit with ATX 3.1 support.
Best for
- Mini-ITX builds.
Skip if
- Skip it if rated output matters most to you; the Super Flower Leadex VII XP PRO 1200W offers 1200W.
Why we like it
It uses a 92mm fluid-dynamic-bearing fan and 105C-rated Japanese capacitors. It matches the ASUS ROG Loki SFX-L 750W Platinum on rated output (750W). The CORSAIR SF750 has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card.
No depth is rated for the CORSAIR SF750, so check the maker's page against your case's PSU bay. It was priced above the ASUS ROG Loki SFX-L 750W Platinum and below the LIAN LI SP1000P at the time of writing. It gives ground on rated output, where the Super Flower Leadex VII XP PRO 1200W offers 1200W.
Key specs
- Wattage
- 750W
- 80 Plus rating
- Platinum
- ATX version
- ATX 3.1
- Form factor
- SFX
- Cabling
- Fully modular
- Fan
- 92mm
- Colour
- Black
Pros
- A 750W rating
- 80 Plus Platinum efficiency
- ATX 3.1 compliance
- Fully modular cables
Cons
- Rated output trails the Super Flower Leadex VII XP PRO 1200W (1200W)
- Costs more than the be quiet! Power Zone 2 850W at the time of writing
Most Power in SFX6 of 6
LIAN LI SP1000P
Lian Li's SP1000P fits 1000W and 80 Plus Platinum into a standard 100mm-deep SFX body.
Best for
- High-end small builds.
Skip if
- Skip it if price comes first: the be quiet! Power Zone 2 850W cost less when we checked.
Why we like it
The fan stops at low load, and an SFX-to-ATX bracket comes in the box. It matches the ASUS ROG Strix 1000W Platinum on rated output (1000W). The LIAN LI SP1000P has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card.
At 100mm deep, compare it with your case's PSU clearance before buying. When we checked, only the CORSAIR SF750 and cheaper picks cost less, and the Super Flower Leadex VII XP PRO 1200W cost more. If you want a confirmed native 12V-2x6 cable count, look to the be quiet! Power Zone 2 850W instead: it offers 1, while this one gives no figure.
Key specs
- Wattage
- 1000W
- Depth
- 100mm
- 80 Plus rating
- Platinum
- Form factor
- SFX
- Fan stop
- Yes
- Colour
- Black
Pros
- 1000W of rated output for high-power cards
- A short 100mm body
- 80 Plus Platinum efficiency
- A fan that stops at low load
Cons
- Costs more than the be quiet! Power Zone 2 850W at the time of writing
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 set side by side six power supplies on rated output, native 12V-2x6 cable count, warranty and 80 Plus rating from manufacturer specifications. We did not test them in-house, and native 12V-2x6 cable count and warranty are missing for at least one pick.
- The shared baseline
- All 6, from the be quiet! Power Zone 2 850W to the LIAN LI SP1000P, state rated output, 80 Plus rating and form factor and share Platinum 80 Plus rating and Black colour.
- Where the specs have gaps
- The ASUS ROG Strix 1000W Platinum, the ASUS ROG Loki SFX-L 750W Platinum, the CORSAIR SF750 and the LIAN LI SP1000P give no native 12V-2x6 cable count; the be quiet! Power Zone 2 850W, the Super Flower Leadex VII XP PRO 1200W, the CORSAIR SF750 and the LIAN LI SP1000P give no warranty.
- Price range
- At our last check the picks ran from the be quiet! Power Zone 2 850W ($100 to $150) to the ASUS ROG Strix 1000W Platinum ($150 to $250).
What to Look for in an 80 Plus Platinum PSUs
Key buying criteria so you get the right fit the first time.
How much rated output you need
The Super Flower Leadex VII XP PRO 1200W tops rated output at 1200W and the CORSAIR SF750 sits lowest at 750W. The Super Flower Leadex VII XP PRO 1200W is the pick for rated output.
Setup checks
The be quiet! Power Zone 2 850W comes with a native 12V-2x6 cable, so a 16-pin card plugs in without an adapter. The ASUS ROG Strix 1000W Platinum has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card.
A PSU-side 8-pin cable connector held between two fingers Features beyond the spec table
The ASUS ROG Loki SFX-L 750W Platinum: ROG heatsinks over key components. The CORSAIR SF750: 105°C-rated Japanese capacitors. The LIAN LI SP1000P: an SFX-to-ATX bracket in the box.
How much to spend
$100 to $150 buys the be quiet! Power Zone 2 850W and the ASUS ROG Loki SFX-L 750W Platinum; $150 to $250 buys the CORSAIR SF750, the LIAN LI SP1000P, the Super Flower Leadex VII XP PRO 1200W and the ASUS ROG Strix 1000W Platinum at our last check.
A 24-pin ATX power cable held in a hand Match the pick to your priority
Most high-end builds: the be quiet! Power Zone 2 850W. Flagship GPUs: the Super Flower Leadex VII XP PRO 1200W. Long-term builds: the ASUS ROG Strix 1000W Platinum.
How to Choose an 80 Plus Platinum PSUs
By priority
| Priority | Consider | Why |
|---|---|---|
| Most high-end builds | be quiet! Power Zone 2 850W | Platinum from both 80 Plus and Cybenetics at 850W |
| Flagship GPUs | Super Flower Leadex VII XP PRO 1200W | 1200W with dual Platinum ratings |
| Long-term builds | ASUS ROG Strix 1000W Platinum | A 10-year warranty on a 1000W Platinum unit |
| Small cases with SFX-L room | ASUS ROG Loki SFX-L 750W Platinum | SFX-L Platinum with a 120mm fan |
| Mini-ITX builds | CORSAIR SF750 | 750W Platinum in SFX size |
| High-end small builds | LIAN LI SP1000P | 1000W Platinum in a 100mm SFX body |
Scroll sideways to see every column.
Key specs side by side
The Super Flower Leadex VII XP PRO 1200W leads on rated output at 1200W, ahead of the ASUS ROG Strix 1000W Platinum at 1000W. "Not listed" marks native 12V-2x6 cable count where the ASUS ROG Strix 1000W Platinum, the ASUS ROG Loki SFX-L 750W Platinum, the CORSAIR SF750 and the LIAN LI SP1000P leave the figure out.
| Power supplie | Wattage | Native 12V-2x6 cables | Warranty | 80 Plus rating |
|---|---|---|---|---|
| be quiet! Power Zone 2 850W | 850W | 1 | Not listed | Platinum |
| Super Flower Leadex VII XP PRO 1200W | 1200W | 1 | Not listed | Platinum |
| ASUS ROG Strix 1000W Platinum | 1000W | Not listed | 10 years | Platinum |
| ASUS ROG Loki SFX-L 750W Platinum | 750W | Not listed | 10 years | Platinum |
| CORSAIR SF750 | 750W | Not listed | Not listed | Platinum |
| LIAN LI SP1000P | 1000W | Not listed | Not listed | Platinum |
Scroll sideways to see every column.
By price at the time of writing
At our last check the cheapest pick, the be quiet! Power Zone 2 850W, sat in the $100 to $150 tier, 2 tiers in all up to the ASUS ROG Strix 1000W Platinum at $150 to $250; Amazon prices move, so recheck before buying.
| Price tier | Power supplies |
|---|---|
| About $100 to $150 | be quiet! Power Zone 2 850W, ASUS ROG Loki SFX-L 750W Platinum |
| About $150 to $250 | CORSAIR SF750, LIAN LI SP1000P, Super Flower Leadex VII XP PRO 1200W, ASUS ROG Strix 1000W Platinum |
Frequently Asked Questions
How does the ASUS ROG Strix 1000W Platinum compare with the Super Flower Leadex VII XP PRO 1200W on rated output?
The Super Flower Leadex VII XP PRO 1200W leads at 1200W, with the ASUS ROG Strix 1000W Platinum at 1000W. The CORSAIR SF750 is at the other end of this group with 750W.
Is the ASUS ROG Strix 1000W Platinum worth paying more than the be quiet! Power Zone 2 850W?
What it brings is rated output (1000W against 850W). The be quiet! Power Zone 2 850W sat in the $100 to $150 tier and the ASUS ROG Strix 1000W Platinum in the $150 to $250 tier when we checked, with 4 other picks between them; pay the difference only if rated output decides your purchase.
What makes the ASUS ROG Strix 1000W Platinum the Best Warranty?
It carries the badge for a 10-year warranty on a 1000W Platinum unit. The be quiet! Power Zone 2 850W, the cheapest pick, sat in the $100 to $150 tier against $150 to $250 here, without out-ranking it on any listed spec. It makes sense for long-term builds.
Which of these power supplies have fan stop?
The be quiet! Power Zone 2 850W, the ASUS ROG Strix 1000W Platinum and the LIAN LI SP1000P have it. The makers of the Super Flower Leadex VII XP PRO 1200W, the ASUS ROG Loki SFX-L 750W Platinum and the CORSAIR SF750 don't state fan stop, so 3 of 6 picks are covered here.
What should I check before buying the ASUS ROG Loki SFX-L 750W Platinum?
The ASUS ROG Loki SFX-L 750W Platinum has no stated native 12V-2x6 cable; confirm the cable kit before pairing it with a 16-pin card. No depth is rated for the ASUS ROG Loki SFX-L 750W Platinum, so check the maker's page against your case's PSU bay. In this guide it ranks fourth of 6, as our Best SFX-L pick, and fifth of 6 on rated output (750W).
Beyond the specs, what sets the be quiet! Power Zone 2 850W and the Super Flower Leadex VII XP PRO 1200W apart?
The be quiet! Power Zone 2 850W: a 140mm Pure Wings 3 fan that stops at low load. The Super Flower Leadex VII XP PRO 1200W: listed voltage regulation within ±0.5% on the main rails. The ASUS ROG Strix 1000W Platinum: GaN MOSFETs.
Bottom Line
be quiet!'s Power Zone 2 850W is the best-value Platinum unit, and Super Flower's Leadex VII XP PRO covers 1200W. The ROG Strix 1000W has a 10-year warranty, and Corsair's SF750 and Lian Li's SP1000P suit small cases.
Related Guides
- Related guideThe Best Platinum and Titanium Power Supplies for Efficient, Quiet PCs
- Related guideThe Best 80 Plus Gold Power Supplies
- Related guideThe Best SFX Power Supplies for Small Form Factor PCs
- Lower budgetThe Best Power Supplies Under $80
- Similar guideThe Best Power Supplies for Gaming PCs
- ExplainerHow to choose a power supply for a PC build
- Explainer80 Plus Ratings Explained
- Check compatibility: graphics cardsHow to Read Graphics Card Names: Ti, Super, XT and OC Editions
- Similar guideThe Best PC Power Supplies
- 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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