Choosing pc power supplies & cables is less about finding the highest number on a box and more about matching format, named connector sets, and purchase condition to a build. Here, the $65 starting point includes both open-box and used SilverStone units, while the remaining choices introduce distinct cable and standard priorities. The useful shortcut is deciding which requirement is non-negotiable before comparing prices.
Quick take
- Start with condition: the SilverStone SST-ST30SF is marked open box, while the Silver Stone SST-ST45SF is marked used.
- The EVGA SuperNOVA 450 GM is marked new and fully modular, giving it a clear cable-layout distinction within the group.
- Segotep is the focused pick when ATX 3.0 and PCIe 5.0 wording are central to the build brief.
Listed price comparison
The four listed amounts span $34.99. The bars place each price within this specific comparison, rather than judging component capability by price alone.
| Model | Listed price | Price position |
|---|---|---|
| SilverStone SST-ST30SF | USD 65.00 | |
| Silver Stone SST-ST45SF | USD 65.00 | |
| EVGA SuperNOVA 450 GM | USD 70.00 | |
| Segotep Power Supply | USD 99.99 |
Decision matrix
- For a 300W SFX target: Choose the SilverStone SST-ST30SF when both the stated output and SFX form factor match the planned system.
- For a 450W SFX target: The Silver Stone SST-ST45SF is the direct match for shoppers working from those two title specifications.
- For a named connector assortment: EVGA lists 24-pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral connections.
- For a native 12VHPWR cable: Segotep is the relevant route because that cable is specifically called out.
Product notes
SilverStone SST-ST30SF
SilverStone SST-ST30SF targets shopping lists that explicitly call for 300W in an SFX form factor. That gives it a direct reason to choose when those two labels match the intended build plan. Its black housing and single fan are additional specified details. The connector list covers 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connections. The limiting factor is its open-box condition, making condition part of the decision alongside the stated connector mix for compact system planning where those labels matter at purchase.
Silver Stone SST-ST45SF
Silver Stone SST-ST45SF brings 80 Plus Bronze wording to the group, giving it a clear reason to enter a Bronze-focused shortlist. It is marked used, and the description says scratches can be visible from prior use; that is the central limitation rather than a minor footnote. The title identifies it as a 450W SFX power supply, providing a distinct shorthand for build plans built around those specifications. Its stated details keep the choice focused: select it for the Bronze designation.
EVGA SuperNOVA 450 GM
EVGA SuperNOVA 450 GM is marked new and has an ECO Mode with DBB Fan in its description. That named mode offers a concrete reason to put it on a shortlist. Its connector list includes 24-pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral connections, useful when those exact labels are needed. It is also identified as a black, universal-compatible SFX unit. The trade-off is listed price: USD 70.00 is $5 above the two SilverStone entries.
Segotep Power Supply
Segotep Power Supply is the route for a stated native 12VHPWR cable, which makes that cable detail a concrete reason to select it. Its description also calls out full modular construction with flat black cables, an arrangement described for cable management. A 120mm fan and 80 Plus Gold certification appear with the model. Its limitation is the listed price: USD 99.99 is the highest amount in the comparison. This choice suits a build brief driven by its named cable and modular-cable arrangement.
Final recommendation by use case
- Choose SilverStone SST-ST30SF when the listed 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connector mix is the deciding requirement.
- Choose Silver Stone SST-ST45SF for a build plan where the 80 Plus Bronze designation is the priority.
- Choose EVGA SuperNOVA 450 GM when a fully modular cable arrangement is the main draw.
- Choose Segotep Power Supply when ATX 3.0 and PCIe 5.0 wording are required for the intended setup.
