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Antec Signature 1300 Platinum vs Corsair CX550M: Comparison
Antec Signature 1300 Platinum vs Corsair CX550M: the wattage difference
Wattage is where these two genuinely part company, Antec Signature 1300 Platinum 1300 W against Corsair CX550M 550 W, a 58% lead for Antec Signature 1300 Platinum. Warranty runs the same way, 10 years on the Antec Signature 1300 Platinum versus 5 years on the Corsair CX550M, another win for Antec Signature 1300 Platinum. Add pcie 8-pin connectors to that, 12 on the Antec Signature 1300 Platinum versus 2 on the Corsair CX550M, and the pattern holds. Antec Signature 1300 Platinum also leads on hold-up time, 21 ms on the Antec Signature 1300 Platinum versus 11.1 ms on the Corsair CX550M.
Who each one is for
The Antec Signature 1300 Platinum is the one to take for builders targeting a workstation or multi-GPU build with serious headroom and anyone who wants fully modular cabling with native 12V-2x6 support, though it is not the pick for builds needing more than 1300W of continuous headroom and buyers who need the smallest possible SFX/SFX-L footprint. Buy the Corsair CX550M for entry-level gaming builds under $700 total and GTX 1660 Super or RX 6600-class GPUs, though it is not built for high-end GPUs or multi-GPU setups and anyone wanting a fully modular 24-pin/EPS. Our rating of the Antec Signature 1300 Platinum (8.8/10): A best-in-class 1300W Platinum-rated ATX unit for a workstation or multi-GPU build with serious headroom, held back only by its premium price.
Antec Signature 1300 Platinum vs Corsair CX550M price
Cost splits them too. Corsair CX550M sits at $54.99, Antec Signature 1300 Platinum at $290, 427% more.
Frequently asked questions
Do the Antec Signature 1300 Platinum and Corsair CX550M differ on modularity?
Yes. Modularity reads Fully Modular on the Antec Signature 1300 Platinum versus Semi-Modular on the Corsair CX550M.
Is the ATX Standard the same on the Antec Signature 1300 Platinum and Corsair CX550M?
It is. Both are listed at ATX 2.x, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- Antec Signature 1300 Platinum
- Antec
- Corsair CX550M
- Corsair
Wattage
- Antec Signature 1300 Platinum
- 1300 WBest
- Corsair CX550M
- 550 W-58%
80 PLUS Rating
- Antec Signature 1300 Platinum
- Platinum
- Corsair CX550M
- Bronze
Model Number
- Antec Signature 1300 Platinum
- Signature Platinum 1300
- Corsair CX550M
- CX550M
ATX Standard
- Antec Signature 1300 Platinum
- ATX 2.x
- Corsair CX550M
- ATX 2.x
Form Factor
- Antec Signature 1300 Platinum
- ATX
- Corsair CX550M
- ATX
+12V Rail Amperage
- Antec Signature 1300 Platinum
- 108 A
- Corsair CX550M
- 45.8 A
Single +12V Rail
- Antec Signature 1300 Platinum
- Yes
- Corsair CX550M
- Yes
Cybenetics Efficiency
- Antec Signature 1300 Platinum
- Platinum
- Corsair CX550M
- Silver
Cybenetics Noise
- Antec Signature 1300 Platinum
- None
- Corsair CX550M
- A
12V-2x6 Connectors
- Antec Signature 1300 Platinum
- 0
- Corsair CX550M
- 0
Hold-Up Time
- Antec Signature 1300 Platinum
- 21 ms
- Corsair CX550M
- 11.1 ms-47%
Zero-RPM Mode
- Antec Signature 1300 Platinum
- Yes
- Corsair CX550M
- No
Sleeved Cables
- Antec Signature 1300 Platinum
- Yes
- Corsair CX550M
- No
Measured Avg Efficiency
- Antec Signature 1300 Platinum
- 89.97 %Best
- Corsair CX550M
- 85.91 %
PCIe 8-pin Connectors
- Antec Signature 1300 Platinum
- 12
- Corsair CX550M
- 2-83%
Measured Average Noise
- Antec Signature 1300 Platinum
- 47.79 dBA
- Corsair CX550M
- 20.2 dBABest
Connector Count
- Antec Signature 1300 Platinum
- 1x 24-pin ATX, 2x EPS 4+4, 12x PCIe 6+2-pin, 14x SATA, 5x Molex, 1x FDD
- Corsair CX550M
- 1x 24-pin ATX (fixed), 1x EPS 4+4 (fixed), 2x PCIe 6+2-pin, 6x SATA, 4x Molex
Fan Size
- Antec Signature 1300 Platinum
- 135 mm
- Corsair CX550M
- 120 mm
Fan Model / Bearing
- Antec Signature 1300 Platinum
- Hong Hua HA13525H12F-Z, fluid dynamic bearing
- Corsair CX550M
- 120mm rifle bearing (HA1225H12F-Z)
OEM / Platform
- Antec Signature 1300 Platinum
- Seasonic
- Corsair CX550M
- CWT
Japanese Capacitors
- Antec Signature 1300 Platinum
- Yes
- Corsair CX550M
- Yes
EPS 8-pin Connectors
- Antec Signature 1300 Platinum
- 2
- Corsair CX550M
- 1
SATA Connectors
- Antec Signature 1300 Platinum
- 14
- Corsair CX550M
- 6
Molex Connectors
- Antec Signature 1300 Platinum
- 5
- Corsair CX550M
- 4
Length
- Antec Signature 1300 Platinum
- 170 mm
- Corsair CX550M
- 140 mm
Colour
- Antec Signature 1300 Platinum
- Black
- Corsair CX550M
- Black
Fan Bearing
- Antec Signature 1300 Platinum
- Fluid Dynamic
- Corsair CX550M
- Rifle
Modularity
- Antec Signature 1300 Platinum
- Fully Modular
- Corsair CX550M
- Semi-Modular
Protections
- Antec Signature 1300 Platinum
- OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
- Corsair CX550M
- OCP, OVP, SCP, OTP
Price
- Antec Signature 1300 Platinum
- 289.99 USD
- Corsair CX550M
- 54.99 USD
Warranty
- Antec Signature 1300 Platinum
- 10 yearsBest
- Corsair CX550M
- 5 years-50%
Which one should you pick?
Choose Antec Signature 1300 Platinum if you want the higher wattage (1300 W vs 550 W), the higher Hold-Up time (21 ms vs 11.1 ms) and the higher PCIe 8-pin connectors (12 vs 2).
Choose Corsair CX550M if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | Antec Signature 1300 Platinum | Corsair CX550M |
|---|---|---|
| Amazon | $289.99 View on Amazon | $54.99 View on Amazon |
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
Antec Signature 1300 Platinum
8.8 / 10 Expert Rating
A best-in-class 1300W Platinum-rated ATX unit for a workstation or multi-GPU build with serious headroom, held back only by its premium price.
Corsair CX550M
6.9 / 10 Expert Rating
A safe, unglamorous budget Bronze pick for entry-level gaming PCs that don't need Gold efficiency or full modularity.