1000 Watts, Platinum, ATX, Fully modular
Power Supplies under $300
14 power supplies under $300 from SilverStone, ASUS, Corsair and more. Most cost $221 to $288, and half cost less than $258.
Spec score 9.1
+1000 watt output for high-power systems
+ATX 3.1 standard supports newer GPUs
+Fully modular cables for a tidy build
$231.99-20%List: $289.99
as of 11/04/2026 22:24 PST - DetailsProduct details
CORSAIR HX1000i ATX 3.1 PCIe 5.1 1000W Power Supply – Black | Ultra Low-Noise, Fully Modular, 80 PLUS Platinum, Fluid
$231.99as of 11/04/2026 22:24 PST - Details
View on AmazonSpec score9.1
Pros
+1000 watt output for high-power systems
+ATX 3.1 standard supports newer GPUs
+Fully modular cables for a tidy build
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Spec score 9.3
1500 Watts, Platinum, ATX, Fully modular
+1500W output for high-power systems
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 cable for 16-pin GPUs
−Large 1500W capacity may exceed needs of typical builds
$279.89
as of 11/04/2026 21:57 PST - DetailsProduct details
be quiet! Straight Power 12 1500W ATX 3.1 PCIe 5.0 80+ Platinum PSU | Native 12V-2x6 Cable, Silent 135mm Fan, Fully
$279.89as of 11/04/2026 21:57 PST - Details
View on AmazonSpec score9.3
Pros
+1500W output for high-power systems
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 cable for 16-pin GPUs
+ATX 3.1 and PCIe 5.0 compliant
Cons−Large 1500W capacity may exceed needs of typical builds
Compared with the 14 Power Supplies on this page+1500 watts: the most watts of the 21 here
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
Best BuyVisit store
About this product
Spec score 9.1
1000 Watts, Platinum, SFX, Fully modular
+1000W output in a compact SFX form factor
+Fully modular cabling
+ATX 3.1 with PCIe 5.1 support
−SFX-L size fits only compatible small-form-factor cases
$279.99
as of 11/04/2026 21:50 PST - DetailsProduct details
ASUS ROG Loki SFX-L 1000W Platinum Power Supply | 80 Plus & Cybenetics Platinum, Fully Modular, ATX 3.1, PCIe 5.1,
$279.99as of 11/04/2026 21:50 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output in a compact SFX form factor
+Fully modular cabling
+ATX 3.1 with PCIe 5.1 support
Cons−SFX-L size fits only compatible small-form-factor cases
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
ASUSVisit store
About this product
Spec score 9.1
1000 Watts, Platinum, Fully modular
+1000W output for demanding systems
+Fully modular cable design
+Ultra compact 140mm depth
$256.99
as of 11/04/2026 07:08 PST - DetailsProduct details
Silverstone Technology 1000 Watt Fully Modular 80 Plus Platinum Power Supply in Ultra Compact 140mm in Depth ST1000-PTS
$256.99as of 11/04/2026 07:08 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for demanding systems
+Fully modular cable design
+Ultra compact 140mm depth
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
Best BuyVisit store
About this product
Spec score 9.1
1000 Watts, Platinum, ATX, Fully modular
+1000W output for high-wattage builds
+Fully modular cabling
+Includes a 12V-2x6 GPU cable
$259.99
as of 11/04/2026 21:50 PST - DetailsProduct details
ASUS ROG Strix 1000W Platinum III Power Supply(ROG Equalizer 12V-2x6 Cable) | 80 PLUS & Cybenetics Platinum, Fully
$259.99as of 11/04/2026 21:50 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for high-wattage builds
+Fully modular cabling
+Includes a 12V-2x6 GPU cable
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Spec score 9.1
1000 Watts, Platinum, ATX, Fully modular
+1000W output for high-end multi-GPU builds
+Fully modular cable design
+ATX 3.1 compatible
$269.99
as of 11/04/2026 07:07 PST - DetailsProduct details
Seasonic VERTEX PX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready | 80 Plus & Cybenetics Platinum A Fully Modular
$269.99as of 11/04/2026 07:07 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for high-end multi-GPU builds
+Fully modular cable design
+ATX 3.1 compatible
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
Best BuyVisit store
About this product
Spec score 9.1
1000 Watts, Platinum, SFX, Fully modular
+1000W output for high-power graphics cards
+Fully modular cabling reduces cable clutter
+SFX-L form factor for compact builds
$288.54
as of 11/04/2026 07:08 PST - DetailsProduct details
SilverStone Technology SX1000 Platinum, 80 Plus Platinum 1000W Fully Modular SFX-L Power Supply, SX1000-LPT-X V1.1
$288.54as of 11/04/2026 07:08 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for high-power graphics cards
+Fully modular cabling reduces cable clutter
+SFX-L form factor for compact builds
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
Best BuyVisit store
About this product
Spec score 9.4
1300 Watts, Titanium, ATX, Fully modular
+1300W output for high-power gaming and workstation builds
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 connector for modern graphics cards
−Higher wattage than most standard builds need
$299.99
as of 11/05/2026 00:45 PST - DetailsProduct details
PowerLot 1300W Power Supply, ATX 3.1, PCIe 5.1, Cybenetics Titanium,Class‑A | Native 12V-2x6, Full Modular PSU for
$299.99as of 11/05/2026 00:45 PST - Details
View on AmazonSpec score9.4
Pros
+1300W output for high-power gaming and workstation builds
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 connector for modern graphics cards
+ATX 3.1 standard with PCIe 5.1 support
Cons−Higher wattage than most standard builds need
Compared with the 14 Power Supplies on this page+Titanium: the highest efficiency of the 18 here
+1300 watts: only 1 of 21 here have more watts
How pros and cons are picked (About: Disclaimer)About this product
Spec score 9.2
1300 Watts, Platinum, ATX, Fully modular
+1300W output for high-power builds
+Fully modular cabling reduces cable clutter
+16-pin GPU connector support
$249.99
as of 11/04/2026 22:23 PST - DetailsProduct details
Cooler Master X Silent MAX 1300 Platinum Power Supply, PCIe 5.1 Ready | Certification Cybenetics Platinum & Noise A++,
$249.99as of 11/04/2026 22:23 PST - Details
View on AmazonSpec score9.2
Pros
+1300W output for high-power builds
+Fully modular cabling reduces cable clutter
+16-pin GPU connector support
+ATX 3.1 compliant
Compared with the 14 Power Supplies on this page+1300 watts: only 1 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Spec score 9.2
1000 Watts, Titanium, ATX, Fully modular
+1000W output for high-power gaming and workstation builds
+Fully modular cables reduce clutter inside the case
+Native 16-pin GPU connector for current graphics cards
$259.99
as of 11/04/2026 22:58 PST - DetailsProduct details
FSP Hydro Ti Pro 1000W Power Supply, 80 Plus Cybenetics Titanium PSU | ATX3.1 PCIe 5.1, Native 12V-2x6 Connector,
$259.99as of 11/04/2026 22:58 PST - Details
View on AmazonSpec score9.2
Pros
+1000W output for high-power gaming and workstation builds
+Fully modular cables reduce clutter inside the case
+Native 16-pin GPU connector for current graphics cards
+Supports the ATX 3.1 standard and PCIe 5.1
Compared with the 14 Power Supplies on this page+Titanium: the highest efficiency of the 18 here
+1000 watts: only 3 of 21 here have more watts
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.9
1000 Watts, Gold, ATX, Fully modular
+1000 watt output for high-power systems
+ATX 3.1 standard supports newer GPUs
+16-pin GPU connector for modern graphics cards
$223.70
as of 11/04/2026 22:25 PST - DetailsProduct details
CORSAIR RM1000e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant,
$223.70as of 11/04/2026 22:25 PST - Details
View on AmazonSpec score8.9
Pros
+1000 watt output for high-power systems
+ATX 3.1 standard supports newer GPUs
+16-pin GPU connector for modern graphics cards
+Fully modular cables for a tidy build
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
−Gold: 14 of the 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Spec score 9.1
1000 Watts, Platinum, SFX, Fully modular
+1000W output for high-wattage builds
+Fully modular cable design
+Compact SFX form factor for small cases
$228.17
as of 11/04/2026 22:25 PST - DetailsProduct details
Corsair SF1000 (2024) Fully Modular Low Noise 80 Plus Platinum ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Ready –$228.17as of 11/04/2026 22:25 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for high-wattage builds
+Fully modular cable design
+Compact SFX form factor for small cases
+ATX 3.1 compliant design
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)Other stores (1)
TargetVisit store
About this product
Spec score 9.1
1000 Watts, Platinum, ATX, Fully modular
+1000W output for demanding systems
+Fully modular cable design
+Includes 16-pin GPU connector
$221.40
as of 11/04/2026 07:08 PST - DetailsProduct details
SilverStone Technology HELA 1000Rz 80 Plus Platinum 1000W ATX 3.1 & PCIe 5 Fully Modular ATX Power Supply,
$221.40as of 11/04/2026 07:08 PST - Details
View on AmazonSpec score9.1
Pros
+1000W output for demanding systems
+Fully modular cable design
+Includes 16-pin GPU connector
+ATX 3.1 compliant
+PCIe 5 support
Compared with the 14 Power Supplies on this page+1000 watts: only 3 of 21 here have more watts
+Platinum: only 3 of 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.8
750 Watts, Gold, SFX, Fully modular
+750W output in a compact SFX form factor
+Fully modular cable design
+Fits small form factor builds
$215.00
as of 11/04/2026 07:07 PST - DetailsProduct details
Seasonic Focus SGX-750 | 750W | 80+ Gold | Full-Modular | SFX Form Factor| Low Noise | Premium Japanese Capacitor | 10
$215.00as of 11/04/2026 07:07 PST - Details
View on AmazonSpec score8.8
Pros
+750W output in a compact SFX form factor
+Fully modular cable design
+Fits small form factor builds
Compared with the 14 Power Supplies on this page−750 watts: 18 of the 21 here have more watts
−Gold: 14 of the 18 here have a higher efficiency
How pros and cons are picked (About: Disclaimer)About this product
Compare specs
| power supply | Watts | Efficiency | Form | Modular | ATX version | Spec score | Price |
|---|---|---|---|---|---|---|---|
| 1000 | Platinum | ATX | Fully modular | ATX 3.1 | 9.1 | $231.99 as of 11/04/2026 22:24 PST - Details | |
| 1500 | Platinum | ATX | Fully modular | ATX 3.1 | 9.3 | $279.89 as of 11/04/2026 21:57 PST - Details | |
| 1000 | Platinum | SFX | Fully modular | ATX 3.1 | 9.1 | $279.99 as of 11/04/2026 21:50 PST - Details | |
| 1000 | Platinum | Fully modular | 9.1 | $256.99 as of 11/04/2026 07:08 PST - Details | |||
| 1000 | Platinum | ATX | Fully modular | ATX 3.1 | 9.1 | $259.99 as of 11/04/2026 21:50 PST - Details | |
| 1000 | Platinum | ATX | Fully modular | ATX 3.1 | 9.1 | $269.99 as of 11/04/2026 07:07 PST - Details | |
| 1000 | Platinum | SFX | Fully modular | 9.1 | $288.54 as of 11/04/2026 07:08 PST - Details | ||
| 1300 | Titanium | ATX | Fully modular | ATX 3.1 | 9.4 | $299.99 as of 11/05/2026 00:45 PST - Details | |
| 1300 | Platinum | ATX | Fully modular | ATX 3.1 | 9.2 | $249.99 as of 11/04/2026 22:23 PST - Details | |
| 1000 | Titanium | ATX | Fully modular | ATX 3.1 | 9.2 | $259.99 as of 11/04/2026 22:58 PST - Details |












