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ASRock Steel Legend SL-750G vs Seasonic Core GM-650: Comparison
What is the difference between ASRock Steel Legend SL-750G and Seasonic Core GM-650?
The gap that matters here is wattage: ASRock Steel Legend SL-750G 750 W against Seasonic Core GM-650 650 W, which puts ASRock Steel Legend SL-750G 13% ahead. ASRock Steel Legend SL-750G also leads on warranty, 10 years on the ASRock Steel Legend SL-750G versus 7 years on the Seasonic Core GM-650.
ASRock Steel Legend SL-750G vs Seasonic Core GM-650: which one fits your build
Take the ASRock Steel Legend SL-750G for buyers building a Steel Legend-themed system who want matching PSU aesthetics. A genuine visual differentiator within the category. It also earns its place with anyone who wants efficiency performance that exceeds the official badge. The independently verified Cybenetics Platinum result here is a real bonus over the Gold certification alone. Avoid it for builds needing more than 750W of headroom. An 850W or higher unit, several covered elsewhere on this site, is the right tier for more demanding GPU pairings. The Seasonic Core GM-650 is the one to take for Budget-Gold mainstream gaming builds and RTX 4060/RX 7600-class GPUs, though it is not the pick for anyone wanting full modularity and ATX 3.0/PCIe 5.0 native connectors.
Which is cheaper, ASRock Steel Legend SL-750G or Seasonic Core GM-650?
The Seasonic Core GM-650 asks 14% more, $79.99 against $69.99 for the ASRock Steel Legend SL-750G.
Where the two are identical
The common ground is wider than the gap: 80 plus rating, form factor, single +12v rail, sleeved cables and pcie 8-pin connectors are identical here. They match on 3 further specifications as well.
Frequently asked questions
Do the ASRock Steel Legend SL-750G and Seasonic Core GM-650 differ on fan size?
Yes. Fan Size reads 135 mm on the ASRock Steel Legend SL-750G versus 120 mm on the Seasonic Core GM-650.
Is the Molex Connectors the same on the ASRock Steel Legend SL-750G and Seasonic Core GM-650?
It is. Both are listed at 3, so it is not a reason to pick one over the other.
Which is cheaper, ASRock Steel Legend SL-750G or Seasonic Core GM-650?
The Seasonic Core GM-650 asks 14% more, $79.99 against $69.99 for the ASRock Steel Legend SL-750G.
Specs and benchmarks
Brand
- ASRock Steel Legend SL-750G
- ASRock
- Seasonic Core GM-650
- Seasonic
Wattage
- ASRock Steel Legend SL-750G
- 750 WBest
- Seasonic Core GM-650
- 650 W-13%
80 PLUS Rating
- ASRock Steel Legend SL-750G
- Gold
- Seasonic Core GM-650
- Gold
Model Number
- ASRock Steel Legend SL-750G
- Steel Legend SL-750G
- Seasonic Core GM-650
- Core GM-650
ATX Standard
- ASRock Steel Legend SL-750G
- ATX 3.1
- Seasonic Core GM-650
- ATX 2.x
Form Factor
- ASRock Steel Legend SL-750G
- ATX
- Seasonic Core GM-650
- ATX
Single +12V Rail
- ASRock Steel Legend SL-750G
- Yes
- Seasonic Core GM-650
- Yes
Cybenetics Efficiency
- ASRock Steel Legend SL-750G
- Platinum
- Seasonic Core GM-650
- Gold
12V-2x6 Connectors
- ASRock Steel Legend SL-750G
- 1
- Seasonic Core GM-650
- 0
Zero-RPM Mode
- ASRock Steel Legend SL-750G
- Yes
- Seasonic Core GM-650
- No
Sleeved Cables
- ASRock Steel Legend SL-750G
- No
- Seasonic Core GM-650
- No
PCIe 8-pin Connectors
- ASRock Steel Legend SL-750G
- 2
- Seasonic Core GM-650
- 2
Connector Count
- ASRock Steel Legend SL-750G
- 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 2x PCIe 6+2-pin, 9x SATA, 3x Molex
- Seasonic Core GM-650
- 1x 24-pin ATX (fixed), 1x EPS 4+4 (fixed), 2x PCIe 6+2-pin, 6x SATA, 3x Molex
Fan Size
- ASRock Steel Legend SL-750G
- 135 mm
- Seasonic Core GM-650
- 120 mm
Fan Model / Bearing
- ASRock Steel Legend SL-750G
- 135mm striped axial fluid dynamic bearing (RL4ZS1352512HH)
- Seasonic Core GM-650
- 120mm sleeve bearing with Smart and Silent Fan Control
OEM / Platform
- ASRock Steel Legend SL-750G
- HEC
- Seasonic Core GM-650
- Seasonic in-house
SATA Connectors
- ASRock Steel Legend SL-750G
- 9
- Seasonic Core GM-650
- 6
Molex Connectors
- ASRock Steel Legend SL-750G
- 3
- Seasonic Core GM-650
- 3
Length
- ASRock Steel Legend SL-750G
- 150 mm
- Seasonic Core GM-650
- 140 mm
Colour
- ASRock Steel Legend SL-750G
- Black
- Seasonic Core GM-650
- Black
Fan Bearing
- ASRock Steel Legend SL-750G
- Fluid Dynamic
- Seasonic Core GM-650
- Sleeve
MTBF
- ASRock Steel Legend SL-750G
- 100000 hours
- Seasonic Core GM-650
- 100000 hours
Modularity
- ASRock Steel Legend SL-750G
- Fully Modular
- Seasonic Core GM-650
- Semi-Modular
Protections
- ASRock Steel Legend SL-750G
- OCP, SCP, OVP, UVP, OTP, OPP
- Seasonic Core GM-650
- OCP, OVP, OPP, SCP, OTP, UVP
Price
- ASRock Steel Legend SL-750G
- 69.99 USD
- Seasonic Core GM-650
- 79.99 USD
Warranty
- ASRock Steel Legend SL-750G
- 10 yearsBest
- Seasonic Core GM-650
- 7 years-30%
Which one should you pick?
Choose ASRock Steel Legend SL-750G if you want the higher wattage (750 W vs 650 W), the higher PCIe 8-pin connectors (2 vs 2) and the higher MTBF (100000 hours vs 100000 hours).
Choose Seasonic Core GM-650 if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASRock Steel Legend SL-750G | Seasonic Core GM-650 |
|---|---|---|
| Newegg | $69.99 View on Newegg | |
| Amazon | $79.99 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
Seasonic Core GM-650
7.6 / 10 Expert Rating
The cheapest legitimate route to 80 PLUS Gold in Seasonic's lineup, good for mainstream builds that don't need full modularity.