TechShelf Guide

PC Power Supplies & Cables: Choose 1350W Modular, 650W ATX, or SFX

Choose between a used 1350W modular Enermax, new 450W SFX EVGA, open-box 650W ATX Segotep, and open-box 300W SFX SilverStone by prioritizing listed output, cable layout, condition, connectors, and price.

Last updated Aug 24, 2026

When you are narrowing down pc power supplies & cables, the hard part is not simply finding an 80 Plus badge. You need to decide whether your priority is a high listed output figure, an SFX or ATX form factor, removable cables, a particular connector set, or a certain condition. These four choices take notably different approaches, even though the listed-price range is relatively tight.

Quick take

Start with the exact form factor and output level your build plan calls for, then weigh cable layout and condition. The $17.01 spread from the lowest to highest listed price is small enough that the configuration details deserve more attention than the gap alone.

  • Enermax MaxRevo is the 1350W entry and identifies a modular cable design.
  • EVGA SuperNOVA 450 GM is another modular choice, listed in new condition.
  • Segotep 650W is the ATX-form-factor candidate in this group.
  • SilverStone SST-ST30SF is the other SFX-form-factor candidate.

Listed price comparison

The bars show each price's position within this four-item range; they are not a measure of performance or fit.

Power supplyListed pricePrice position
Enermax MaxRevo 1350WUSD 64.89
EVGA SuperNOVA 450 GMUSD 70.00
Segotep 650W ATXUSD 52.99
SilverStone SST-ST30SFUSD 65.00

Decision matrix

  • For the highest listed output figure: The Enermax MaxRevo carries a 1350W rating, well apart from the other stated ratings of 650W, 450W, and 300W.
  • For a specific connector list: EVGA names 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral connectors.
  • For ATX format with a listed 120mm fan: Segotep is the match among this group, with both details named.
  • For a broad set of listed pin types: SilverStone includes 20 Pin, 20+4 Pin, 24 Pin, and 8 Pin 12V connectors.

Product notes

Enermax MaxRevo 1350W Modular PC Power Supply

Enermax MaxRevo 1350W Modular PC Power Supply 80 PLUS Gold EMR1350EWT w/ Cables

The main reason to choose the Enermax MaxRevo is its fully modular cable connectivity, which is intended to let you connect only the leads needed inside the case. Its description also positions the model for multi-GPU rigs and extreme-performance systems, and it is identified as an ATX / EPS12V unit. The listed voltage range is 115-240 VAC, while the frequency range is 50-60 Hz. The important trade-off is condition: this is a used power supply. That makes the MaxRevo the clear option here when its stated high-output, modular design matters more than buying a new unit.

EVGA SuperNOVA 450 GM 450W

EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. New

EVGA's SuperNOVA 450 GM stands out for shoppers who specifically want a new unit with an ECO Mode and DBB fan named in the description. The extensive connector list is useful when your planned cable requirements include CPU, PCI Express, SATA, and peripheral connections rather than only a main motherboard plug. Fully modular construction is also part of the model's stated feature set. Its limitation is straightforward: at USD 70.00, it is the highest listed price in this comparison. Choose it for its particular combination of new condition, named connectors, and modular configuration-not because its price sits above the others.

OPEN BOX Segotep 650W 80 Plus Gold Non-Modular ATX PSU

OPEN BOX 650W Power Supply 80 Plus Gold Non-Modular ATX Gaming PC Case PSU

The Segotep entry gives you a 650W, 80 Plus Gold, ATX power supply with a listed 20+4 Pin connector and PFC protection. It also names a single 12V output and a 120mm fan, providing a clear set of stated specifications for an ATX-oriented selection. Its open-box condition differs from the new EVGA and used Enermax choices. The limitation is the non-modular design: cable selection is not part of its stated configuration in the way it is for the two modular models. This is the straightforward pick when the Gold-rated 650W ATX specification is more important than detachable cabling.

SilverStone SST-ST30SF SFX Form Factor 300W

SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply

SilverStone's SST-ST30SF is defined by a 300W maximum power rating and 80Plus Bronze designation. The model also lists one fan and four connector types: 20 Pin, 20+4 Pin, 24 Pin, and 8 Pin 12V. That combination gives it a distinct connector profile within the two SFX entries. Its limitation is condition, as this is an open-box unit rather than the new EVGA alternative. The 300W figure is simply the lowest stated maximum in this group, so it should be matched to a build plan that specifically calls for that listed output level rather than treated as a general substitute for the higher-rated options.

Final recommendation by use case

Choose the Enermax MaxRevo 1350W when the stated multi-GPU and extreme-performance-system framing is central to your build. Pick the EVGA SuperNOVA 450 GM when you want a new SFX model. The Segotep 650W is the choice when the lowest listed price of USD 52.99 is the deciding constraint. Select the SilverStone SST-ST30SF when a 300W SFX target is the requirement.

Products in this article
Enermax MaxRevo 1350W Modular PC Power Supply 80 PLUS Gold EMR1350EWT w/ CablesUSD 64.89View on eBayEVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. NewUSD 70.00View on eBayOPEN BOX 650W Power Supply 80 Plus Gold Non-Modular ATX Gaming PC Case PSUUSD 52.99View on eBaySilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power SupplyUSD 65.00View on eBay
Enermax MaxRevo 1350W Modular PC Power Supply 80 PLUS Gold EMR1350EWT w/ CablesUSD 64.89View on eBayEVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. NewUSD 70.00View on eBayOPEN BOX 650W Power Supply 80 Plus Gold Non-Modular ATX Gaming PC Case PSUUSD 52.99View on eBaySilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power SupplyUSD 65.00View on eBay

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