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Compare Fractal Design Ion 3 Gold 850W vs be quiet! Straight Power 11 550W Platinum

Fractal Design Ion 3 Gold 850W and be quiet! Straight Power 11 550W Platinum are both power supplies with the same Modular (Full) and EPS Connectors (2). The main differences are in Wattage, Efficiency, PCI-Express 16 Pin 12VHPWR Connectors and PCI-Express 6+2 Pin Connectors.

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Fractal Design Ion 3 Gold 850W

be quiet! Straight Power 11 550W Platinum

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Brand

Fractal Design

Brand

be quiet!

Model

FD-P-IA3G-850
FD-P-IA3G-850-EU

Model

BN640
BN305

Release Date

📅 November 2025

Release Date

📅 March 2020

* First availability for purchase, it may not correspond to the actual market launch date.

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Price history

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Compatible PC parts

Graphics Cards ► Cases ►

Compatible PC parts

Graphics Cards ► Cases ►

Wattage

850 W

Wattage

550 W

Type

ATX

Type

ATX

Modular

Full

Modular

Full

Efficiency

80+ Gold

Efficiency

80+ Platinum

PCI-Express 16 Pin 12VHPWR Connectors

1

PCI-Express 16 Pin 12VHPWR Connectors

0

PCI-Express 12 Pin Connectors

0

PCI-Express 12 Pin Connectors

0

PCI-Express 6+2 Pin Connectors

3

PCI-Express 6+2 Pin Connectors

4

PCI-Express 6 Pin Connectors

0

PCI-Express 6 Pin Connectors

0

EPS Connectors

2

EPS Connectors

2

SATA Connectors

6

SATA Connectors

9

Molex Connectors

2

Molex Connectors

3

Length

150 mm

Length

160 mm

Options (3)

	Black 750 $119.99
	Black 1000 $159.99
	White 1000 $159.99

Options (5)

	750W Power Supply $99.90
	850W Power Supply $174.90
	1200W Power Supply $149.90
	1000W Power Supply $149.90
	650W Power Supply $134.90

Comparison and key differences summary

Reasons to buy the Fractal Design Ion 3 Gold 850W:

Newer Product, it was released around 6 years later
+300 Watts available

Reasons to buy the be quiet! Straight Power 11 550W Platinum:

8% cheaper, you can save $10.09
Better 80 Plus efficiency
+1 PCI-Express 6+2 Pin connectors available
+3 SATA connectors available
+1 Molex connectors available

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