ThermalTake ToughPower 850W PSU Review


Modular AND high quality

There was a time when a bright lightbulb consumed more electricity than a powerful computer.  Those days are long past, as even a modest computer today will eat up an average of 300 watts or more.  The ultra-powerful hardware that tempts the PC enthusiast hungers for more electricity to fuel it, thus creating the need for the high capacity PSUs that deliver 600 watts or more.

Today’s PC or gaming buff will likely have two powerful video cards, a multi-core processor, and other bells and whistles that require alot of amps, and the trend is only getting worse.  Quad-core CPUs are already here, and Quad-GPUs are on the horizon, so they need a beefy power supply with multiple rails to ensure clean and stable power to run it all.

Given the current lineup of power supply products, users are forced to make some compromises.  Right now, units either feature a modular design or have rock-solid performance, but the hardcore modder or gamer wants (nay, NEEDS) both.  Some of the most rock-solid power supplies right now are the OCZ ProXstream 1000W (reviewed here), or PC Power & Cooling, but both of these units are not modular, meaning that your case will be clogged with alot of unused cables.

Thermaltake answers the call with their new and improved Toughpower 850W power supply, which now features a highly modular cable design in addition to re-engineered and highly efficient innards.  Can it be true?  Is there really a power supply that lets us have our cake and eat it, too?

Product Description

Thermaltake Technologies delivers most solid line of power supplies built to specifically towards high-end systems for utmost PC system performance. The leader in thermal solutions defines Tough as being “able to withstand great strain and stress without tearing or breaking” same with their newest and latest line of Toughpower power supplies.

ThermalTake Toughpower 850W PSU Features

  • Stable 850W continuous output (at 50 degree operating environment)
  • Four independent & dedicated +12V rails provides superior performance for PC system (combined load of 62A)
  • Built-in two 6-pin and next generation 8-pin PCI-E connectors for multi-GPU graphic cards
  • Supports Dual Core CPU / Quad Core CPU / nVidia SLI & Quad SLI and all multi-core GPU technologies
  • Independent Voltage Circuit: offers unflappable current delivery under heavy load
  • Strict voltage regulation (+/-3%): provides steady voltage for system
  • Active Power Factor Correction (PF>0.99) and high efficiency (up to 87%)
  • Industrial grade components (capacitor, transformer, etc)
  • High reliability: MTBF>120,000 hours
  • Quiet and reliable 14cm ball-bearing fan
  • Protections: Over Current, Over voltage, and Short-Circuit protection
  • Safety / EMI Approvals: CE, CB, TUV, FCC, UL, CUL, and BSMI certified
24-pin Main Connector
X 1
8-pin +12V Power Connector
X 1
4-pin +12V Power Connector
X 1
4-pin Peripheral Power Connector
X 8
4-pin Floppy Drive Connector
X 2
5-pin S-ATA Connector
X 8
6-pin PCI Express Connector
X 2
8-pin PCI Express Connector
X 2
8-pin to 6-pin PCI-E Connector X 2
ThermalTake Toughpower 850W Specifications
ATX Logic on-off additional power rocker switch
Active PFC (PF > 0.9)
Cooling System
140mm Fan, 2300RPM ± 10%
16 dBA at 1300 RPM
P. G. Signal
100-500 ms
up to 87%
Hold-up Time
Input Voltage
100 VAC ~ 240 VAC
Input Frequency Range
47 ~ 63 Hz
120,000 hrs minimum (at 25 ?)
Input Current
Operating Temp.
10 ? to 50 ?
Storage Temp.
-20 ? to 70?
Operating Humidity
20% to 90%, non-condensing
Storage Humidity
5% to 95%, non-condensing
DC rail
Trigger Point/Range
Over Voltage Protection
+3.3V trip point
4.5 Vmax
+5.0V trip point
7.0 Vmax
+12.0V trip point
15.6 Vmax
Over Current Protection
35A ~ 50A
33A ~ 50A
+12V1 & +12V2
21A ~ 29A
+12V3 & +12V4
32A ~ 38A
Short Protection
All output to GND