Tom's Hardware Verdict

The Rog Thor 1200W is a good fit for enthusiast users requiring lots of power and silent operation. You won't find a quieter PSU in this capacity range. And the OLED screen further sets this PSU apart from the competition.

Pros

+
Full power at 47°C
+
Good ripple suppression & load regulation
+
Quality components
+
Dual-ball bearing fan
+
Lots of modular cables and connectors
+
Aura compatible RGB lighting
+
10-year warranty
+
Accurate AC Watt readings
+
Good looks

Cons

-
Expensive
-
Not as efficient as competition
-
OPP is set sky-high
-
OLED screen provides limited info
-
Bulky

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Specifications and Part Analysis

Asus teamed up with Seasonic for its latest high-end PSU line, and the results are very promising. The embedded OLED screen provides real-time power draw data and there is also addressable RGB lighting and Aura Sync compatibility, for those who want their power supply to look fancy. The price that Asus asks for it is high but fair, given the product's features. The main competitors of Asus' high-end offering are the similar capacity Seasonic Prime Platinum and the Corsair AX1200i. The latter, despite its age, is still a worthy adversary.

Asus makes several different types of components, so it makes sense for the company to enter the PSU market. But since the cost of developing a PSU from the scratch is huge, the company decided to team up with Seasonic and modify its Prime and Focus platforms, for the Rog Thor 1200W and 850W models respectively. Here we'll be taking a good look at the strongest Thor unit, which looks to be a heavily modified Seasonic Prime Platinum model. We'll investigate not just the internals, but take a close look at the external design as well. The Thor units have nice aesthetics, addressable RGB lighting, and an impressive OLED screen. The latter really sets this unit apart from the competition, although it only provides power draw data and not DC wattage information.

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Manufacturer (OEM)	Seasonic
Max. DC Output	1200W
Efficiency	80 PLUS Platinum, ETA-A (88-91%)
Noise	LAMBDA-A+ (15-20 dB[A])
Modular	✓ (Fully)
Intel C6/C7 Power State Support	✓
Operating Temperature (Continuous Full Load)	0 - 50°C
Over Voltage Protection	✓
Under Voltage Protection	✓
Over Power Protection	✓
Over Current (+12V) Protection	✓
Over Temperature Protection	✓
Short Circuit Protection	✓
Surge Protection	✓
Inrush Current Protection	✓
Fan Failure Protection	✗
No Load Operation	✓
Cooling	135mm Double Ball Bearing Fan (PLA13525B12M)
Semi-Passive Operation	✓ (selectable)
Dimensions (W x H x D)	152 x 88 x 192mm
Weight	2.37 kg (5.22 lb)
Form Factor	ATX12V v2.4, EPS 2.92
Warranty	10 Years

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Modular Cables
Description	Cable Count	Connector Count (Total)	Gauge	In Cable Capacitors
ATX connector 20+4 pin (610mm)	1	1	18-20AWG	No
4+4 pin EPS12V (650mm)	2	2	18AWG	No
6+2 pin PCIe (680mm)	4	4	18AWG	No
6+2 pin PCIe (680mm+70mm)	2	4	18AWG	Yes
SATA (350mm+150mm+150mm+150mm)	1	4	18AWG	No
SATA (400mm+115mm+115mm+115mm)	2	8	18AWG	No
4-pin Molex to 2x SATA (150mm)	1	2	18AWG	No
4-pin Molex (350mm+120mm)	1	2	18AWG	No
4-pin Molex (450mm+120mm+120mm)	1	3	18AWG	No
FDD Adapter (+105mm)	1	1	22AWG	No
RGB Cable (800mm)	1	1	22AWG	No
RGB Sync Cable (800mm)	1	1	24AWG	No
AC Power Cord Type (1380mm)	1	1	18AWG	-

The amount of provided cables and connectors here is impressive! Besides two EPS connectors, the unit also has eight PCIe cables with four them being installed on dedicated cables. Moreover, you will find twelve SATA and a pair of SATA 3.3-compatible connectors, supporting the Power Disable function. In the latter the 3.3V rail is absent from the SATA connectors, since it doesn't exist on the four-pin Molex connector responsible for feeding them with power.

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General Data
Manufacturer (OEM)	Seasonic
Platform Model	Prime Ultra Platinum
Primary Side
Transient Filter	6x Y caps, 4x X caps, 2x CM chokes, 1x MOV
Inrush Protection	NTC Thermistor & Relay
Bridge Rectifier(s)	2x Vishay LVB2560 (600V, 25A @ 105°C)
APFC MOSFETS	2x Infineon IPP60R099CP (650V, 19A @ 100°C, 0.099 Ohm)
APFC Boost Diode	1x STMicroelectronics STPSC10H065D (650V, 10A @ 135°C)
Hold-up Cap(s)	Hitachi (400V, 1x 820uF & 1x 470uF, 2000h @ 105°C, HU)
Main Switchers	4x Infineon IPP50R199CP (550V, 11A @ 100°C, 0.199 Ohm)
Drivers For Main Switchers	2x Silicon Labs Si8230BD
APFC Controller	ON Semiconductor NPC1654
Current Sensor IC	Allegro ACS725T
Switching Controller	Champion CM6901
Topology	Primary side: Full-Bridge & LLC Resonant Converter Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETS	8x Vishay SiR638DP (40V, 100A @ 70°C, 0.88mOhm)
5V & 3.3V	DC-DC Converters: 6x Infineon BSC0906NS PWM Controller: APW7159
Filtering Capacitors	Electrolytics: Chemi-Con (105°C, W), Chemi-Con (4,000-10,000h @ 105°C, KY, KYB), Rubycon (6,000-10,000h @ 105°C, ZLH), 1x Rubycon (5VSB circuit, 105°C, YXD) Polymers: FPCAP, Nippon Chemi-Con
Micro Controller	Microchip ATmega8A
Flash Memory	Microchip SST26VF016B
Supervisor IC	Weltrend WT7527V (OVP, UVP, OCP, SCP, PG ) & AS393M
Fan Model	Power Logic PLA13525B12M (135mm, 12V, 0.40A, 2000 RPM, 111.1 CFM, 41.6 dB[A], Double Ball Bearing)
5VSB Circuit
Buck Converter	Leadtrend LD7750R
Rectifiers	STMicroelectronics STU6N65K3 (650V, 3A @ 100°C, 1.3Ohm)
-12V Circuit
Buck Converter	Lite-On LSP5523 (3A max output current )

Asus asked Seasonic for a number of modifications on the Prime Platinum platform, with the most important being the installation of a micro-controller, which aside from providing a digital interface is also responsible for the circuit that provides the power draw data. All heatsinks have been replaced with larger ones for this Asus model, in order to allow for decreased airflow leading to reduced acoustic noise.