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ASUS ROG Thor 1000W Platinum II vs FSP Dagger Pro SFX 850W: Comparison
What is the difference between ASUS ROG Thor 1000W Platinum II and FSP Dagger Pro SFX 850W?
The gap that matters here is wattage: ASUS ROG Thor 1000W Platinum II 1000 W against FSP Dagger Pro SFX 850W 850 W, which puts ASUS ROG Thor 1000W Platinum II 15% ahead. ASUS ROG Thor 1000W Platinum II also leads on pcie 8-pin connectors, 8 on the ASUS ROG Thor 1000W Platinum II versus 4 on the FSP Dagger Pro SFX 850W. Add mtbf to that, 120000 hours on the ASUS ROG Thor 1000W Platinum II versus 100000 hours on the FSP Dagger Pro SFX 850W, and the pattern holds.
Who each one is for
The ASUS ROG Thor 1000W Platinum II is the one to take for high-end single-GPU gaming builds and builds wanting a visible power draw readout, though it is the wrong buy for small form factor cases. The FSP Dagger Pro SFX 850W suits SFF builds running RTX 4080/4090-class GPUs and buyers wanting native 12V-2x6 in a compact form factor, though it is not built for standard ATX tower builds and noise-sensitive quiet builds under sustained load. Our rating of the FSP Dagger Pro SFX 850W (8.3/10): one of the few 850W SFX-L units with native ATX 3.0 support, ideal for high-end small-form-factor builds.
Where the two are identical
Where they agree, they agree completely, modularity, single +12v rail, 12v-2x6 connectors, zero-rpm mode and eps 8-pin connectors included, so the decision does not turn on any of those. They match on 1 further specification as well.
Frequently asked questions
Do the ASUS ROG Thor 1000W Platinum II and FSP Dagger Pro SFX 850W differ on fan size?
Yes. Fan Size reads 135 mm on the ASUS ROG Thor 1000W Platinum II versus 92 mm on the FSP Dagger Pro SFX 850W.
Is the Fan Bearing the same on the ASUS ROG Thor 1000W Platinum II and FSP Dagger Pro SFX 850W?
It is. Both are listed at Ball, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- ASUS ROG Thor 1000W Platinum II
- ASUS
- FSP Dagger Pro SFX 850W
- FSP
Wattage
- ASUS ROG Thor 1000W Platinum II
- 1000 WBest
- FSP Dagger Pro SFX 850W
- 850 W-15%
80 PLUS Rating
- ASUS ROG Thor 1000W Platinum II
- Platinum
- FSP Dagger Pro SFX 850W
- Gold
Model Number
- ASUS ROG Thor 1000W Platinum II
- ROG-THOR-1000P2-GAMING
- FSP Dagger Pro SFX 850W
- Dagger Pro 850W
Form Factor
- ASUS ROG Thor 1000W Platinum II
- ATX
- FSP Dagger Pro SFX 850W
- SFX
+12V Rail Amperage
- ASUS ROG Thor 1000W Platinum II
- 83 A
- FSP Dagger Pro SFX 850W
- 70.83 A
Single +12V Rail
- ASUS ROG Thor 1000W Platinum II
- Yes
- FSP Dagger Pro SFX 850W
- Yes
Cybenetics Efficiency
- ASUS ROG Thor 1000W Platinum II
- Platinum
- FSP Dagger Pro SFX 850W
- Gold
Cybenetics Noise
- ASUS ROG Thor 1000W Platinum II
- A++
- FSP Dagger Pro SFX 850W
- A-
12V-2x6 Connectors
- ASUS ROG Thor 1000W Platinum II
- 1
- FSP Dagger Pro SFX 850W
- 1
Zero-RPM Mode
- ASUS ROG Thor 1000W Platinum II
- Yes
- FSP Dagger Pro SFX 850W
- Yes
PCIe 8-pin Connectors
- ASUS ROG Thor 1000W Platinum II
- 8
- FSP Dagger Pro SFX 850W
- 4-50%
Connector Count
- ASUS ROG Thor 1000W Platinum II
- 1x 24/20-pin ATX, 2x EPS 4+4-pin, 1x PCIe 16-pin, 8x PCIe 6+2-pin, 12x SATA, 6x Peripheral
- FSP Dagger Pro SFX 850W
- 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 4x PCIe 6+2-pin, 6x SATA, 2x Molex
Fan Size
- ASUS ROG Thor 1000W Platinum II
- 135 mm
- FSP Dagger Pro SFX 850W
- 92 mm
Fan Model / Bearing
- ASUS ROG Thor 1000W Platinum II
- 135mm double ball bearing (CF1325H12D)
- FSP Dagger Pro SFX 850W
- 92mm ball bearing
OEM / Platform
- ASUS ROG Thor 1000W Platinum II
- Seasonic
- FSP Dagger Pro SFX 850W
- FSP
EPS 8-pin Connectors
- ASUS ROG Thor 1000W Platinum II
- 2
- FSP Dagger Pro SFX 850W
- 2
SATA Connectors
- ASUS ROG Thor 1000W Platinum II
- 12
- FSP Dagger Pro SFX 850W
- 6
Molex Connectors
- ASUS ROG Thor 1000W Platinum II
- 6
- FSP Dagger Pro SFX 850W
- 2
Length
- ASUS ROG Thor 1000W Platinum II
- 190 x 150 x 86 mm
- FSP Dagger Pro SFX 850W
- 100 mm
Fan Bearing
- ASUS ROG Thor 1000W Platinum II
- Ball
- FSP Dagger Pro SFX 850W
- Ball
MTBF
- ASUS ROG Thor 1000W Platinum II
- 120000 hours
- FSP Dagger Pro SFX 850W
- 100000 hours-17%
Modularity
- ASUS ROG Thor 1000W Platinum II
- Fully Modular
- FSP Dagger Pro SFX 850W
- Fully Modular
Protections
- ASUS ROG Thor 1000W Platinum II
- OPP, OVP, UVP, SCP, OCP, OTP
- FSP Dagger Pro SFX 850W
- OCP, OVP, SCP, OPP, OTP
Which one should you pick?
Choose ASUS ROG Thor 1000W Platinum II if you want the higher wattage (1000 W vs 850 W), the higher 12V-2x6 connectors (1 vs 1) and the higher PCIe 8-pin connectors (8 vs 4).
Choose FSP Dagger Pro SFX 850W if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASUS ROG Thor 1000W Platinum II | FSP Dagger Pro SFX 850W |
|---|---|---|
| B&H Photo | View on B&H Photo | |
| Amazon | $159.99 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
FSP Dagger Pro SFX 850W
8.3 / 10 Expert Rating
One of the few 850W SFX-L units with native ATX 3.0 support, ideal for high-end small-form-factor builds.




