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ASUS ROG Strix 850W Gold ATX3.0 vs Seasonic S12III 750 Bronze: Comparison
What is the difference between ASUS ROG Strix 850W Gold ATX3.0 and Seasonic S12III 750 Bronze?
On warranty the spread is 50%, ASUS ROG Strix 850W Gold ATX3.0 10 years against Seasonic S12III 750 Bronze 5 years, so ASUS ROG Strix 850W Gold ATX3.0 takes it. Add pcie 8-pin connectors to that, 3 on the ASUS ROG Strix 850W Gold ATX3.0 versus 2 on the Seasonic S12III 750 Bronze, and the pattern holds. Mtbf runs the same way, 120000 hours on the ASUS ROG Strix 850W Gold ATX3.0 versus 100000 hours on the Seasonic S12III 750 Bronze, another win for ASUS ROG Strix 850W Gold ATX3.0.
Who each one is for
Buy the ASUS ROG Strix 850W Gold ATX3.0 for anyone who wants fully modular cabling with native 12V-2x6 support and systems where a 10-year warranty and Gold-tier efficiency matter, though it is not built for builds needing more than 850W 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. The Seasonic S12III 750 Bronze is the one to take for budget builds that still want Seasonic build quality and buyers who don't mind fixed cables, though it is not the pick for small cases needing tight cable management and anyone wanting Gold-rated efficiency. The same goes for mid-range GPUs like the RTX 4060 Ti or RX 7700 XT.
Which is cheaper, ASUS ROG Strix 850W Gold ATX3.0 or Seasonic S12III 750 Bronze?
Cost splits them too. Seasonic S12III 750 Bronze sits at $69.99, ASUS ROG Strix 850W Gold ATX3.0 at $170, 143% more.
Frequently asked questions
Do the ASUS ROG Strix 850W Gold ATX3.0 and Seasonic S12III 750 Bronze differ on wattage?
Yes. Wattage reads 850 W on the ASUS ROG Strix 850W Gold ATX3.0 versus 750 W on the Seasonic S12III 750 Bronze.
Is the Form Factor the same on the ASUS ROG Strix 850W Gold ATX3.0 and Seasonic S12III 750 Bronze?
It is. Both are listed at ATX, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- ASUS ROG Strix 850W Gold ATX3.0
- ASUS
- Seasonic S12III 750 Bronze
- Seasonic
Wattage
- ASUS ROG Strix 850W Gold ATX3.0
- 850 WBest
- Seasonic S12III 750 Bronze
- 750 W-12%
80 PLUS Rating
- ASUS ROG Strix 850W Gold ATX3.0
- Gold
- Seasonic S12III 750 Bronze
- Bronze
Model Number
- ASUS ROG Strix 850W Gold ATX3.0
- ROG Strix 850W Gold ATX3.0
- Seasonic S12III 750 Bronze
- S12III-750
ATX Standard
- ASUS ROG Strix 850W Gold ATX3.0
- ATX 3.0
- Seasonic S12III 750 Bronze
- ATX 2.x
Form Factor
- ASUS ROG Strix 850W Gold ATX3.0
- ATX
- Seasonic S12III 750 Bronze
- ATX
Single +12V Rail
- ASUS ROG Strix 850W Gold ATX3.0
- Yes
- Seasonic S12III 750 Bronze
- Yes
12V-2x6 Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 1
- Seasonic S12III 750 Bronze
- 0
Zero-RPM Mode
- ASUS ROG Strix 850W Gold ATX3.0
- Yes
- Seasonic S12III 750 Bronze
- No
Sleeved Cables
- ASUS ROG Strix 850W Gold ATX3.0
- No
- Seasonic S12III 750 Bronze
- No
PCIe 8-pin Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 3
- Seasonic S12III 750 Bronze
- 2-33%
Connector Count
- ASUS ROG Strix 850W Gold ATX3.0
- 1x 24-pin ATX, 2x EPS 4+4, 1x PCIe 16-pin, 3x PCIe 6+2-pin, 5x SATA, 4x Molex
- Seasonic S12III 750 Bronze
- 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 6x SATA, 2x Molex (all fixed)
Fan Size
- ASUS ROG Strix 850W Gold ATX3.0
- 135 mm
- Seasonic S12III 750 Bronze
- 120 mm
Fan Model / Bearing
- ASUS ROG Strix 850W Gold ATX3.0
- 135mm double ball bearing (CF1325H12D), Axial-tech
- Seasonic S12III 750 Bronze
- 120mm sleeve bearing
OEM / Platform
- ASUS ROG Strix 850W Gold ATX3.0
- CWT
- Seasonic S12III 750 Bronze
- Seasonic in-house
Cable Lengths
- ASUS ROG Strix 850W Gold ATX3.0
- ATX 600mm, EPS 650mm, 16-pin 600mm, PCIe 600-610mm, SATA 400+120+120mm, Molex 400+150+150+150mm
- Seasonic S12III 750 Bronze
- 24-pin 500mm, EPS 500mm, PCIe 450mm, SATA 500-650mm
Length
- ASUS ROG Strix 850W Gold ATX3.0
- 180 mm
- Seasonic S12III 750 Bronze
- 140 mm
Colour
- ASUS ROG Strix 850W Gold ATX3.0
- Black
- Seasonic S12III 750 Bronze
- Black
MTBF
- ASUS ROG Strix 850W Gold ATX3.0
- 120000 hours
- Seasonic S12III 750 Bronze
- 100000 hours-17%
Modularity
- ASUS ROG Strix 850W Gold ATX3.0
- Fully Modular
- Seasonic S12III 750 Bronze
- Non-Modular
Protections
- ASUS ROG Strix 850W Gold ATX3.0
- OPP, OVP, UVP, SCP, OCP, OTP
- Seasonic S12III 750 Bronze
- OCP, OVP, SCP, OTP
Price
- ASUS ROG Strix 850W Gold ATX3.0
- 169.99 USD
- Seasonic S12III 750 Bronze
- 69.99 USD
Warranty
- ASUS ROG Strix 850W Gold ATX3.0
- 10 yearsBest
- Seasonic S12III 750 Bronze
- 5 years-50%
Which one should you pick?
Choose ASUS ROG Strix 850W Gold ATX3.0 if you want the higher wattage (850 W vs 750 W), the higher PCIe 8-pin connectors (3 vs 2) and the higher MTBF (120000 hours vs 100000 hours).
Choose Seasonic S12III 750 Bronze if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASUS ROG Strix 850W Gold ATX3.0 | Seasonic S12III 750 Bronze |
|---|---|---|
| Amazon | $169.99 View on Amazon | |
| Consumercarts listing | $69.99 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
ASUS ROG Strix 850W Gold ATX3.0
8.3 / 10 Expert Rating
A solid 850W Gold-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.
Seasonic S12III 750 Bronze
7.2 / 10 Expert Rating
A better-built-than-average budget Bronze unit for buyers who trust the Seasonic name over a modular cable set.