Tom's Hardware Verdict

The Thermaltake Toughpower GF1 850W is an excellent product, but the recent US tariffs highly affected its price tag, and this is the main reason behind its restricted availability, in the US market.

Reasons to buy

+
Full power at 47 degrees Celsius
+
High build quality
+
Good overall performance
+
Efficient
+
Fully modular
+
2x EPS and 6x PCIe connectors
+
HDB fan
+
10-year warranty

Reasons to avoid

-
Expensive
-
Restricted availability in the US
-
3.3V rail's transient response could be better

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Specifications and Part Analysis

In a category where the Corsair RM850x and the similar capacity Seasonic Focus Plus Gold dominate, Thermaltake offers an alternative option featuring RGB lighting, excellent performance, and quiet operation, which might not be as quiet as the RM850x, but it takes the lead from Seasonic's offering. In terms of performance, the Toughpower GF1 850W is close to the Corsair and Seasonic models mentioned above. Its primary disadvantage is the restricted availability, for the moment at least, since due to the recent tariffs, Thermaltake pulled it out from all major US online US stores. Currently, you will only find it in ttpremium store at an eye-watering price.

Thermaltake's Toughpower GF1 line consists of three members with capacities ranging from 650W to 850W. They are based on a platform that is provided by Channel Well Technology. The fully modular cable design along with the quality and silent fan are two features that most gamers will appreciate.

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Product Photos

When it comes to performance, Thermaltake claims that it is high enough to meet the demands of enthusiast users and overclockers, and the same goes for reliability. A ten-year warranty supports all GF1 models, providing an extended peace of mind to their future owners. Finally, the fan comes with a Hydraulic bearing, which, along with the appropriate fan speed profile, can easily lower the overall noise output to below 30 dB(A) levels.

Product Photos

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Manufacturer(OEM)	CWT
Max. DC Output	850W
Efficiency	80 PLUS Gold, ETA-A (88-91%)
Noise	LAMBDA-A- (25-30 dB[A])
Modular	Yes (Fully)
Intel C6/C7 Power State Support	Yes
Operating Temperature (Continuous Full Load)	0 - 50°C
Over Voltage Protection	Yes
Under Voltage Protection	Yes
Over Power Protection	Yes
Over Current (+12V) Protection	Yes
Over Temperature Protection	Yes
Short Circuit Protection	Yes
Surge Protection	Yes
Inrush Current Protection	Yes
Fan Failure Protection	No
No Load Operation	✓
Cooling	140mm Hydro Dynamic Bearing Fan [TT-1425 (A1425L12S)]
Semi-Passive Operation	✓ (selectable)
Dimensions(W x H x D)	152 x 87 x 162mm
Weight	1.66 kg (3.66 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 (600mm)	1	1	18AWG	No
4+4 pin EPS12V (650mm)	1	1	16AWG	No
8 pin EPS12V (650mm)	1	1	16AWG	No
6+2 pin PCIe (700mm+150mm)	3	6	16-18AWG	No
SATA (500mm+150mm+150mm+150mm)	3	12	18AWG	No
4 pin Molex (500mm+150mm+150mm+150mm)	1	4	18AWG	No
FDD Adapter (100mm)	1	1	22AWG	No
AC Power Cord (1420mm) - C13 coupler	1	1	18AWG	-

There are plenty of connectors to deliver the unit's full power with ease. Besides a pair of EPS connectors, you also get six PCIe ones along with twelve SATA and four 4-pin Molex. The distance between the peripheral connectors is ideal at 150mm, and all cables are long enough to allow the installation in large, full-tower chassis. Finally, there are no in-line caps, which will make the cable management and routing processes much more straightforward.

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General Data
Manufacturer (OEM)	CWT
PCB Type	Double Sided
Primary Side
Transient Filter	4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x Discharge IC
Inrush Protection	NTC Thermistor & Relay
Bridge Rectifier(s)	1x GBU1506 (600V, 15A @ 100°C)
APFC MOSFETS	2x Toshiba TK31A60W (600V, 30.8A @ 150°C, 0.088Ohm)
APFC Boost Diode	1x CREE C3D08060A (600V, 8A @ 152°C)
Hold-up Cap(s)	2x Nippon Chemi-Con (400V, 470uF each or 940uF combined, 2,000h @ 105°C, KMW)
Main Switchers	2x Toshiba TK25A60X5 (600V, 25A @ 150°C, 0.14Ohm)
APFC Controller	Champion CM6502UHHX & CM03X Green PFC Controller
Resonant Controllers	Champion CM6901X
Topology	Primary side: Half-Bridge &a LLC converter Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETS	6x Infineon BSC014N04LS (40V, 100A @ 100°C, 1.4mOhm)
5V & 3.3V	DC-DC Converters: 2x UBIQ QM3006D (30V, 57A @ 100°C, 5.5mOhm) & 2x UBIQ QM3016D (30V, 68A @ 100°C, 4mOhm) PWM Controllers: ANPEC APW7159C
Filtering Capacitors	Electrolytics: 7x Nippon Chemi-Con (4-10,000 @ 105°C, KY), 2x Nippon Chemi-Con (5-6,000h @ 105°C, KZH), 8x Nichicon (4-10,000h @ 105°C, HE) Polymers: 29x FPCAP
Supervisor IC	Sitronix ST9S429-PG14 (OCP, OVP, UVP, SCP, PG)
Fan Model	Thermaltake TT-1425 (Hong Sheng OEM, A1425L12S, 140mm, 12V, 0.30A, Hydro Dynamic Bearing Fan)
5VSB Circuit
Rectifier	1x UTC 3N60 FET (600V, 3A @ 25°C, 3.6Ohm) & PS1045L (45V, 10A)
Standby PWM Controller	On-Bright OB5269

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Parts Photos

This is an analog platform, provided by CWT. On the primary side, a half-bridge topology is used along with an LLC resonant converter. On the secondary side, a synchronous rectification scheme is utilized, and two DC-DC converters handle the minor rails. The build quality is high, and the PCB looks empty on the secondary side since there are no proper heat sinks, and all power transfers are done through the PCB and not through wires, which block the airflow and are also the cause of increased energy loads.

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Soldering Quality

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All FETs that handle the +12V rail are installed on a vertical board. Two tiny heat sinks are used to cool them off. Those FETs are highly efficient and can withstand high operating temperatures, so there is no need for massive heat sinks. Moreover, the +12V board is installed right next to the main transformer to restrict energy losses. Finally, the +12V rail power both VRMs that generate the minor rails.

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