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Silver rectangular ATX power supply with modular cable sockets and 120mm fan grille

Silverstone

Silverstone ST70F-PB 700 W full modular 80 Plus Bronze power supply

SKU CH-96XP-V7QTT MPN ST70F-PB

A 700 W fully modular ATX supply with 80 Plus Bronze efficiency, a single 54 A +12 V rail and a quiet 120 mm fan

  • Max wattage700 W
  • Power efficiency82%~85% at 20% ~ 100% loading
  • Modular cablingFull Modular
  • Fan configurationSingle 120 mm silent fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • Full modular cabling simplifies builds and airflow
  • 80 PLUS Bronze certified for 82% to 85% efficiency
  • Single +12V rail delivers 54 A for stable GPU power
  • 120 mm silent fan runs quietly at 40 °C operating temperature
  • Active PFC across 90 to 264 V input ensures worldwide compatibility

What this unit delivers

The Silverstone ST70F-PB is a 700 W ATX12V power supply with full modular cabling and 80 PLUS Bronze certification. It provides a single +12 V rail rated at 54 A and active PFC for stable output across a 90–264 V input range.

Who it suits and who it does not

Builders who want to route only the cables they need will appreciate the 100 % modular design and four 6+2-pin PCIe connectors. Systems that require higher wattage or a different efficiency tier should consider other models.

Installation notes

The 140 mm depth fits most chassis and the 120 mm fan keeps noise low at up to 40 °C operating temperature. Ensure the 20+4-pin main connector and eight SATA power plugs match your component layout before powering on.

How it compares

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

Price $68.99
Cheaper than about 80% of the 10,869 comparable items (median $142.99).
Max wattage 700 W
Lower than about 65% of the 930 comparable items (median 850 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSilverStone
Model nameST70F-PB
Product typeATX12 V / EPS12 V
Ports & slots
PCIe power connectors4 × 6+2-Pin
SATA power connectors8
Output type+3.3 V@22A, +5 V@18A, +12 V@54A
Connection types1 × 24 / 20-Pin motherboard connector(550 mm)
1 × 8 / 4-Pin EPS / ATX 12 V connector(750 mm)
4 × 8 / 6-Pin PCIE connector("550 mm / 150 mm" x 2)
8 x SATA connector("600 mm / 150 mm / 150 mm /150 mm" x 2)
3 × 4-Pin Peripheral connector (600 mm / 150 mm / 150 mm)
1 × 4-Pin Floppy connector(600 mm / 150 mm / 150 mm / 150 mm)
Power
Max wattage700 W
Power efficiency82%~85% at 20% ~ 100% loading
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS BRONZE Certified
Overvoltage protectionYes
Overload protectionYes
Supply voltage90–264 V
AC input frequency47–63 Hz
Size & build
Product dimensions3.39 in × 5.91 in × 5.51 in
Product weight4.41 lb (2 kg)
Shipping weight2.55 kg
Package size312 × 193 × 104 mm
Compatibility
Haswell compatibilityYes
More details
Fan configurationSingle 120 mm silent fan
Mean time between failures>100,000 h

Questions about this item

What motherboard power connectors must my board provide for the 20+4-pin main and EPS12V cables?

Your motherboard needs a 20+4-pin ATX socket and an 8-pin EPS12V socket to accept the full-modular cables included with the 700 W unit.

Will the single +12 V rail rated at 54 A support an older graphics card that uses dual 6-pin PCIe power?

Yes, the four 6+2-pin PCIe cables and the 54 A single rail deliver ample current for legacy dual-6-pin cards without adapter hassles.

How can I verify the 80 PLUS Bronze efficiency of 82 to 85 percent is being met after installation?

Use a wall power meter to compare AC draw against DC load; at typical loads the measured efficiency should fall within the 82 to 85 percent range.

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