Choosing pc power supplies & cables can come down to a few build-defining details: SFX versus ATX form factor, a modular cable layout versus a non-modular listing, connector labels, and whether open-box or used condition fits your purchase. These four power supplies cover several different combinations rather than one simple upgrade path.
Quick take
Start with the format your build calls for, then narrow by condition and cable arrangement. The SilverStone SST-ST30SF and SST-ST45SF are SFX entries with Bronze certification in their titles, while the EVGA SuperNOVA 450 GM is also SFX but explicitly fully modular and new. MSI's MPG A1000G moves to an ATX form factor and carries PCIe 5.0 and ATX 3.0 language in its title.
For cable management, the two listings that explicitly state modular design are the EVGA and MSI models. Connector naming also varies, so match the listed connector types to the connections you intend to use rather than treating wattage or certification labels as a universal answer.
Listed price comparison
| Power supply | Listed price | Price position |
|---|---|---|
| SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze | USD 65.00 | |
| Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze | USD 65.00 | |
| EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular | USD 70.00 | |
| MPG A1000G PCIE 5.0 & ATX 3.0 Gaming Power Supply | USD 130.00 |
The two SilverStone choices share the lowest listed price. EVGA is listed USD 5 above them, while the MSI sits at the top of the group's USD 65 to USD 130 range.
Decision matrix
- Choose the SilverStone SST-ST30SF when its named 20 Pin, 20+4 Pin, 24 Pin, and 8 Pin 12V connector arrangement is a close match for your planned connections.
- Put the Silver Stone SST-ST45SF on your shortlist when the 450W Bronze designation in its title is the configuration you are looking to compare.
- Lean toward the EVGA SuperNOVA 450 GM when its listed 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral connectors fit your cable-end requirements.
- Make the MPG A1000G the focal point if a full modular design is central to how you want to organize the power-supply side of the build.
Product notes
SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply
The SST-ST30SF is the SilverStone choice for an SFX-form-factor build centered on a 300W listed maximum output. Its title clearly identifies the compact PSU format and 80Plus Bronze label, while the connector list provides several specific motherboard and 12V connector names to compare against your intended setup. A single fan is listed for cooling. The key limitation is condition: this unit is marked open box rather than new. Choose it when the 300W designation and SFX format line up with your plan, and when an open-box purchase is acceptable for that build.
Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze Power Supply
The SST-ST45SF offers another SilverStone SFX choice, with a 450W designation and 80 Plus Bronze wording directly in the product title. That makes it a straightforward alternative for shoppers who are specifically comparing those named specifications within an SFX power-supply search. Its listed price matches the SST-ST30SF, so the decision is not separated by price within this pair. The important tradeoff is that it is marked used, and the description notes prior-use scratches. It suits a buyer comfortable selecting a used unit; that condition is the clearest constraint against it.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. New
EVGA's SuperNOVA 450 GM combines a 450W title designation with SFX form factor, 80 Plus Gold wording, and an explicitly fully modular design. It is also marked new, which distinguishes it from both SilverStone listings on condition. For shoppers focused on routing and selecting power-supply cables around a modular arrangement, that stated design is the main reason to choose it. ECO Mode with DBB Fan is also named in the description. Its limitation within this comparison is the USD 70.00 listed price, placing it above the two USD 65.00 SilverStone entries.
MPG A1000G PCIE 5.0 & ATX 3.0 Gaming Power Supply - Full Modular - 80 Plus Gold
The MPG A1000G is the ATX-form-factor choice, with PCIe 5.0, ATX 3.0, full modular, and 80 Plus Gold language all prominently stated. Its title identifies a 1000W rating, and its connector list includes 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA I, and 4 Pin Peripheral entries. Select it when the PCIe 5.0 and ATX 3.0 labels are meaningful factors in your build plan and an ATX PSU is the intended format. The limitation is its USD 130.00 listed price, the highest figure in this group.
Final recommendation by use case
Choose the SilverStone SST-ST30SF when its 300W nameplate fits the build and an open-box unit suits your purchase. Choose the Silver Stone SST-ST45SF when you prefer its used-unit route among the SFX selections. The EVGA SuperNOVA 450 GM is the clear match for a new, fully modular SFX purchase. Pick the MPG A1000G when PCIe 5.0 and ATX 3.0 wording, plus ATX form factor, are the deciding requirements.
