Choosing pc power supplies & cables comes down to a few build-defining questions: does the case call for SFX or ATX, does condition matter to you, and is modular cabling part of the plan? The $21.10 listed-price spread is small enough that format, connection wording, and condition deserve more attention than price alone.
Quick take
Start with form factor. Three choices are labeled SFX, while one is labeled ATX. The two SilverStone units share the lowest listed price, the EVGA sits $5 higher, and the ATX model sets the top end of the range. For a compact build with a detailed named connector list and fully modular construction, the EVGA is the most clearly described route. The SilverStone choices offer different output labels and conditions, while the ATX model is the pick centered on full modular cabling and an ARGB fan.
Listed price comparison
| Model | Listed price | Relative price |
|---|---|---|
| SilverStone SST-ST30SF SFX 300W | USD 65.00 | |
| Silver Stone SST-ST45SF 450W SFX | USD 65.00 | |
| EVGA SuperNOVA 450 GM 450W SFX | USD 70.00 | |
| ATX 1000W Full Modular Power Supply | USD 86.10 |
Decision matrix
- Form factor: SilverStone SST-ST30SF, Silver Stone SST-ST45SF, and EVGA SuperNOVA 450 GM are labeled SFX. The 1000W full modular model is labeled ATX.
- Efficiency wording: The two SilverStone titles use 80 Plus Bronze, the EVGA title uses 80 Plus Gold, and the ATX model is titled 80+ Bronze.
- Modular construction: EVGA is listed as fully modular, while the ATX model is titled full modular and also carries a modular feature listing.
- Condition: The selection spans open-box, used, and new units, making condition a meaningful part of the decision rather than an afterthought.
Product notes
SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply
Choose the SilverStone SST-ST30SF when the stated SFX form factor and 300W maximum output align with the build. Its connector list is specific: 20 Pin, 20+4 Pin, 24 Pin, and 8 Pin 12V are all named. That gives shoppers a direct set of connection terms to compare against their own parts list. The limitation is equally concrete: the unit is listed as open box, and its title uses a 300W output label while other choices here are titled 450W or 1000W. One-fan cooling and a black finish complete the stated configuration.
Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze Power Supply
Silver Stone SST-ST45SF suits a shopper seeking the title-stated 450W output alongside an 80 Plus Bronze label. It keeps the decision within an SFX format, rather than requiring a move to the ATX option. Its limitation is condition: the unit is listed as used, and the description says it may show scratches due to prior use. That makes the used status an important part of the trade-off, not a minor footnote. Pick the SST-ST45SF when a used 450W SFX unit is the specific direction you want to take.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply
EVGA SuperNOVA 450 GM is the natural choice when fully modular construction is central to your cable plan. The SFX unit is listed as new and names a detailed connector set: 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral. Those connection names provide a concrete reference point for shoppers working from a component list. Its limitation is format-specific rather than a performance claim: this is an SFX model, so an ATX-focused build points toward the other form factor in the comparison. The title also carries an 80 Plus Gold label.
ATX 1000W Full Modular Power Supply, 80+ Bronze Dual CPU PC PUS with ARGB Fan
The ATX 1000W Full Modular Power Supply is the form-factor change in this selection. Choose it when an ATX build calls for full modular construction and the title's ARGB fan. Its modular design is presented for easy cable management, and the stated connector details include 20+4 Pin and 4+4 CPU. The limitation is its listed-price position: USD 86.10 is USD 21.10 above the lowest-priced choice. It is listed as new and uses one fan, making it a distinct alternative to the compact-format options.
Final recommendation by use case
- For a compact build where named PCI Express and SATA connections matter: choose the EVGA SuperNOVA 450 GM.
- For 300W labeling paired with 20 Pin, 20+4 Pin, 24 Pin, and 8 Pin 12V wording: choose the SilverStone SST-ST30SF.
- For a deliberately used 450W route: choose the Silver Stone SST-ST45SF.
- For a build plan centered on an ARGB fan: choose the ATX 1000W Full Modular Power Supply.
