Consumercarts is reader-supported. Learn more
be quiet! Pure Power 12 550W vs FSP Hydro K PRO 750W: Comparison
be quiet! Pure Power 12 550W vs FSP Hydro K PRO 750W wattage compared
On wattage the spread is 27%, be quiet! Pure Power 12 550W 550 W against FSP Hydro K PRO 750W 750 W, so FSP Hydro K PRO 750W takes it. Warranty runs the same way, 10 years on the be quiet! Pure Power 12 550W versus 5 years on the FSP Hydro K PRO 750W, another win for be quiet! Pure Power 12 550W. Add pcie 8-pin connectors to that, 2 on the be quiet! Pure Power 12 550W versus 4 on the FSP Hydro K PRO 750W, and the pattern holds.
Which should you buy, be quiet! Pure Power 12 550W or FSP Hydro K PRO 750W?
The be quiet! Pure Power 12 550W suits Quiet mainstream gaming builds and RTX 4060/RX 7600-class GPUs, though it is not the pick for anyone wanting fully modular cables and high-end or multi-GPU builds. Buy the FSP Hydro K PRO 750W for anyone who wants semi-modular cabling with standard PCIe connectors and systems where a 3-year warranty and Bronze-tier efficiency matter, though it is the wrong buy for builds needing more than 750W of continuous headroom and buyers who need the smallest possible SFX/SFX-L footprint. It also earns its place with builders targeting a popular RTX 4070 Ti / RTX 5070-class gaming build. Our rating of the be quiet! Pure Power 12 550W (7.8/10): A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.
Which is cheaper, be quiet! Pure Power 12 550W or FSP Hydro K PRO 750W?
Cost splits them too. FSP Hydro K PRO 750W sits at $64.99, be quiet! Pure Power 12 550W at $74.99, 15% more.
Frequently asked questions
Do the be quiet! Pure Power 12 550W and FSP Hydro K PRO 750W differ on hold-up time?
Yes. Hold-Up Time reads 16.6 ms on the be quiet! Pure Power 12 550W versus 17 ms on the FSP Hydro K PRO 750W.
Is the Fan Size the same on the be quiet! Pure Power 12 550W and FSP Hydro K PRO 750W?
It is. Both are listed at 120 mm, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- be quiet! Pure Power 12 550W
- be quiet!
- FSP Hydro K PRO 750W
- FSP
Wattage
- be quiet! Pure Power 12 550W
- 550 W-27%
- FSP Hydro K PRO 750W
- 750 WBest
80 PLUS Rating
- be quiet! Pure Power 12 550W
- Gold
- FSP Hydro K PRO 750W
- Bronze
Model Number
- be quiet! Pure Power 12 550W
- Pure Power 12 550W
- FSP Hydro K PRO 750W
- Hydro K PRO 750W
ATX Standard
- be quiet! Pure Power 12 550W
- ATX 3.1
- FSP Hydro K PRO 750W
- ATX 2.x
Form Factor
- be quiet! Pure Power 12 550W
- ATX
- FSP Hydro K PRO 750W
- ATX
+12V Rail Amperage
- be quiet! Pure Power 12 550W
- 45.8 A
- FSP Hydro K PRO 750W
- 62.5 A
Single +12V Rail
- be quiet! Pure Power 12 550W
- Yes
- FSP Hydro K PRO 750W
- Yes
12V-2x6 Connectors
- be quiet! Pure Power 12 550W
- 1
- FSP Hydro K PRO 750W
- 0
Hold-Up Time
- be quiet! Pure Power 12 550W
- 16.6 ms-2%
- FSP Hydro K PRO 750W
- 17 ms
Zero-RPM Mode
- be quiet! Pure Power 12 550W
- No
- FSP Hydro K PRO 750W
- No
Sleeved Cables
- be quiet! Pure Power 12 550W
- Yes
- FSP Hydro K PRO 750W
- No
PCIe 8-pin Connectors
- be quiet! Pure Power 12 550W
- 2-50%
- FSP Hydro K PRO 750W
- 4
Connector Count
- be quiet! Pure Power 12 550W
- 1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6, 2x PCIe 6+2-pin, 5x SATA, 1x Molex (all fixed)
- FSP Hydro K PRO 750W
- 1x 24-pin ATX, 2x EPS 4+4, 4x PCIe 6+2-pin, 8x SATA, 2x Molex, 1x floppy
Fan Size
- be quiet! Pure Power 12 550W
- 120 mm
- FSP Hydro K PRO 750W
- 120 mm
Fan Model / Bearing
- be quiet! Pure Power 12 550W
- 120mm be quiet! fan, rifle bearing
- FSP Hydro K PRO 750W
- 120mm hydraulic bearing (HYB)
OEM / Platform
- be quiet! Pure Power 12 550W
- HEC
- FSP Hydro K PRO 750W
- FSP
EPS 8-pin Connectors
- be quiet! Pure Power 12 550W
- 1
- FSP Hydro K PRO 750W
- 2
SATA Connectors
- be quiet! Pure Power 12 550W
- 5
- FSP Hydro K PRO 750W
- 8
Molex Connectors
- be quiet! Pure Power 12 550W
- 1
- FSP Hydro K PRO 750W
- 2
Cable Lengths
- be quiet! Pure Power 12 550W
- 24-pin 600mm, max cable length 550mm
- FSP Hydro K PRO 750W
- ATX 550mm, EPS 600mm, PCIe 600mm, SATA 500-750mm
Length
- be quiet! Pure Power 12 550W
- 160 mm
- FSP Hydro K PRO 750W
- 140 mm
Colour
- be quiet! Pure Power 12 550W
- Black
- FSP Hydro K PRO 750W
- Black
Fan Bearing
- be quiet! Pure Power 12 550W
- Rifle
- FSP Hydro K PRO 750W
- Hydro
MTBF
- be quiet! Pure Power 12 550W
- 100000 hours
- FSP Hydro K PRO 750W
- 100000 hours
Modularity
- be quiet! Pure Power 12 550W
- Non-Modular
- FSP Hydro K PRO 750W
- Semi-Modular
Protections
- be quiet! Pure Power 12 550W
- OTP, OCP, OPP, SCP, OVP, UVP, SIP
- FSP Hydro K PRO 750W
- OCP, OVP, SCP, OPP
Price
- be quiet! Pure Power 12 550W
- 74.99 USD
- FSP Hydro K PRO 750W
- 64.99 USD
Warranty
- be quiet! Pure Power 12 550W
- 10 yearsBest
- FSP Hydro K PRO 750W
- 5 years-50%
Which one should you pick?
Choose be quiet! Pure Power 12 550W if you want the higher MTBF (100000 hours vs 100000 hours) and the higher warranty (10 years vs 5 years).
Choose FSP Hydro K PRO 750W if you want the higher wattage (750 W vs 550 W), the higher Hold-Up time (17 ms vs 16.6 ms) and the higher PCIe 8-pin connectors (4 vs 2).
Price comparison
| Retailer | be quiet! Pure Power 12 550W | FSP Hydro K PRO 750W |
|---|---|---|
| Amazon | $74.99 View on Amazon | |
| Consumercarts listing | $64.99 View on Consumercarts listing |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
be quiet! Pure Power 12 550W
7.8 / 10 Expert Rating
A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.
FSP Hydro K PRO 750W
7 / 10 Expert Rating
A solid 750W Bronze-rated ATX unit for a popular RTX 4070 Ti / RTX 5070-class gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.