Shopping for pc power supplies & cables gets complicated when the prices nearly line up but the form factors, conditions, cable approaches, and stated wattages do not. The practical first decision is whether your build calls for an SFX-form-factor unit or an ATX/EPS12V power supply, then whether a new, open-box, or used designation suits your plan. This group is close on listed cost, yet it divides into distinctly different build briefs.
Quick take
The listed range runs from USD 64.89 to USD 70.00, a difference of USD 5.11. That means price alone is unlikely to settle the decision. Instead, start with the form factor named in the title, then narrow by condition and cable arrangement.
The SilverStone SST-ST30SF is the 300W SFX choice with a detailed connector list. The Silver Stone SST-ST45SF moves to a 450W SFX Bronze configuration, but is marked used. EVGA combines a new condition designation with an SFX, fully modular design. Enermax is the outlier for its 1350W designation, ATX/EPS12V type, modular layout, and included cables.
Listed-price comparison
| Product | Listed price | Price position |
|---|---|---|
| SilverStone SST-ST30SF | USD 65.00 | |
| Silver Stone SST-ST45SF | USD 65.00 | |
| EVGA SuperNOVA 450 GM | USD 70.00 | |
| Enermax MaxRevo 1350W | USD 64.89 |
The two SilverStone listings share the same listed price despite differing 300W and 450W title designations. The EVGA sits at the top of the range, while the Enermax is the low-end price entry.
Decision matrix
- Choose the SST-ST30SF when the named 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connectors fit the connections you need. It also lists one fan.
- Put the SST-ST45SF on the shortlist when a used-condition SFX power supply is acceptable and the title's 450W Bronze configuration is the target.
- Favor the EVGA SuperNOVA 450 GM when your required connection types include 24-pin, 4+4 CPU, 6+2 PCI Express, SATA, and 4-pin peripheral plugs.
- Look to the Enermax MaxRevo when included cables and the description's cable-management approach matter to your setup.
Product notes
SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply
The SilverStone SST-ST30SF is a direct fit for a shopper seeking an SFX power supply with a stated 300W maximum output. Its named connector set covers 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connections, giving a concrete reason to choose it when those plug types match the rest of the build. The black unit also lists one fan and carries an 80Plus Bronze designation. Its limitation is the open-box condition, which distinguishes it from the EVGA's new condition designation. This is a focused 300W SFX choice rather than the higher-wattage route represented elsewhere here.
Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze Power Supply
The SST-ST45SF makes sense for a buyer whose brief is specifically a 450W SFX unit carrying the 80 Plus Bronze wording in its title. It shares the SFX direction of the smaller SilverStone entry while changing the stated wattage to 450W. That straightforward combination is the reason to choose it over a model aimed at modular cabling or a non-SFX format. The main constraint is its used condition. For someone comfortable selecting a used power supply, the title presents a clear 450W SFX Bronze path; shoppers prioritizing a new-condition designation have the EVGA alternative in this comparison.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. New
The EVGA SuperNOVA 450 GM is the focused choice for an SFX build where fully modular cabling and a new condition designation are priorities. It names 24-pin, 4+4 CPU, 6+2 PCI Express, SATA, and 4-pin peripheral connections, making it especially relevant when those specific connector types are required. The listing also identifies a one-fan cooling setup and 80 Plus Gold wording. Its limitation is price position: it is the highest listed-price entry in this group. The difference is modest in dollars, but it separates this new, fully modular route from the other three choices.
Enermax MaxRevo 1350W Modular PC Power Supply 80 PLUS Gold EMR1350EWT w/ Cables
The Enermax MaxRevo stands apart for shoppers looking for the stated 1350W output, an ATX/EPS12V power supply type, and a modular design supplied with cables. Its description specifically frames connecting only needed cables as an approach to cable management and airflow, which is a concrete reason to choose it when cable routing is central to the build plan. The model is also identified as EMR1350EWT. The trade-off is its used condition. That makes it a different proposition from the new EVGA, even though both carry 80 Plus Gold wording.
Final recommendation by use case
Pick the SilverStone SST-ST30SF when a 300W SFX power supply is the stated target. Choose the Silver Stone SST-ST45SF for the named 450W SFX Bronze configuration when used condition fits your preference. The EVGA SuperNOVA 450 GM is the clearer route for a new, fully modular SFX unit. Select the Enermax MaxRevo 1350W when your brief calls for an ATX/EPS12V unit with included cables and a 1350W designation.
