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Compact SFX power supply unit with matte black finish and modular cable ports visible

EVGA

EVGA SuperNOVA 450 GM SFX Power Supply 123-GM-0450-Y1

SKU CH-DV8K-PHMDH MPN 123-GM-0450-Y1

SFX power supply delivering 450 W with 80 Plus Gold efficiency, fully modular cables and a 92 mm double ball bearing fan

  • Max wattage450 W
  • Power efficiency90% (115 VAC) or Higher Typical
  • Modular cablingFull Modular
  • Fan configuration1 × 92 mm Double Ball Bearing Fan
  • Power factor correctionActive
  • Main power connector1 × 24 Pin ATX

Model SFX 80+ Gold (450W)

  • 80 Plus Gold certification delivers 90% typical efficiency at 115 VAC
  • Fully modular cables keep SFX builds clean and improve airflow
  • 100% Japanese capacitors provide long-term reliability under load
  • Single +12V rail supplies 54.1 A for stable GPU power
  • ECO mode with 92 mm double ball bearing fan reduces noise at low loads

SFX Power Supply for Compact Builds

This EVGA SuperNOVA unit delivers 450 W in an SFX form factor measuring 124 mm in length. It includes an ATX mounting bracket for wider case compatibility. The fully modular design uses 100% Japanese capacitors and a single +12 V rail rated for 54.1 A. An ECO mode works with the 92 mm double ball bearing fan to reduce noise at low loads.

80 Plus Gold Efficiency Limits

The power supply meets 80 Plus Gold certification with 90 % typical efficiency at 115 VAC input. Active PFC operates across a 100 to 240 V range at 50 or 60 Hz. Protection circuits include OVP, OCP, OTP, OPP, SCP and UVP. A DC-to-DC converter handles 3.3 V and 5 V regulation for stable output under varying loads.

Straightforward Modular Installation

Fully modular cables let builders connect only the required 24-pin ATX, two 8-pin PCIe (6+2) and four SATA power leads. The supplied Power ON Self Tester enables a quick functional check before the unit is mounted. The only common issue is forgetting to seat the modular plugs fully, which can cause intermittent power on the affected rail.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $64.99
Cheaper than about 82% of the 10,869 comparable items (median $142.99).
Max wattage 450 W
Lower than about 86% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameEVGA
Product lineSuperNOVA 450 GM
Model name123-GM-0450-Y1
Product typeSFX
Ports & slots
PCIe power connectors2 × 8 Pin (6+2) PCIE
SATA power connectors4 x SATA
Output type+3.3 V @ 20A, +5 V @ 20A, +12 V @ 37.5A, +5VSB @ 2.5A, -12 V @ 0.3A
Connection types1 × 24 pin ATX
1 × 8 pin (4+4) EPS (CPU)
2 × 8 pin (6+2) PCIe
4 x SATA
4 × 4 pin Peripheral
1 x Floppy
12V power connector1 × 8 Pin (4+4) EPS (CPU)
Floppy connector1 x Floppy
Peripheral connector4 × 4-Pin Peripheral
Power
Max wattage450 W
Power efficiency90% (115 VAC) or Higher Typical
Modular cablingFull Modular
Power factor correctionActive
Main power connector1 × 24 Pin ATX
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current6.5–3A
Size & build
Product dimensions2.48 in × 4.92 in × 3.94 in
Product weight3.1 lb (1.41 kg)
Shipping weight1.77 kg
Package size272 × 201 × 99 mm
Compatibility
Haswell compatibilityCertified
PSU length limit124 mm
Environment & compliance
Regulatory approvalsTUV, CB, CE, FCC, cTUVus, WEEE, RoHS Compliance with ErP Lot 6 2013 Requirement
More details
Fan configuration1 × 92 mm Double Ball Bearing Fan
Mean time between failures100,000 h

Other versions of this model

1 more in the same range

Questions about this item

Should I pick the 450 W model or a higher-wattage SFX unit?

Choose the 450 W unit if your build draws less than 450 W total; the single +12 V rail can deliver up to 54.1 A, so it handles modern CPUs and GPUs within that budget.

What does the 80 Plus Gold rating mean once the PSU is installed?

At typical loads on 115 V mains the unit runs at 90 % efficiency or higher, so less power turns into heat and your electricity bill stays lower.

How does the SFX form factor and included bracket affect case compatibility?

The 124 mm long SFX chassis fits native SFX cases, and the supplied bracket lets you mount it in standard ATX cases as well.

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