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Thermaltake Toughpower DPS G RGB 850W PSU Review

In addition to its flagship Titanium line, Thermaltake also equipped the DPS G Gold family with an RGB fan. The highest-capacity model outputting up to 850W is our test subject today.

Our Verdict

The semi-digital platform, the silent operation and the decent performance of the +12V rail aren't good enough in this price level. The TPG-0850D-R has to face formidable opponents and it needs some major changes in its design, in order to do it effectively. A generous price cut would surely help as well.


  • Full power at 48 °C
  • Ripple suppression
  • Load regulation at +12V
  • Silent
  • Build quality
  • Fully modular
  • 6x PCIe connectors
  • SPM platform
  • Selectable semi-passive operation
  • HDB & RGB fan
  • Warranty
  • Distance between peripheral connectors
  • Distinctive looks


  • Price
  • Efficiency
  • Load regulation on the minor rails
  • Hold-up time
  • Transient response at +12V
  • Single EPS connector

TPG-0850D-R Power Supply Review

We recently reviewed a couple of high-end Thermaltake PSUs, both belonging to the company's flagship DPS G RGB Titanium line. Its TPG-1250-T got our attention first thanks to its semi-digital CWT platform (CST), which performs well. But aside from high capacity, the TPG-1250-T is also very expensive, putting it out of reach for many enthusiasts. For those who "only" need 850W and don't want to spend a fortune, the strongest member of TT's Toughpower DPS G RGB Gold line could be an answer. This unit is also made by CWT, but it uses a different platform (CSH) that features a digital interface, allowing the PSU to communicate through Thermaltake's Smart Power Management (SPM) software.

SPM was covered extensively in our TPG-1500D-T review. Besides usage data, alerts, and remote monitoring, the software also lets you shut down or restart your machine. You can access SPM either through a browser or by using TT's mobile app. For local management, you can also use the DPS G PC App 2.0 (or DPSApp, for short). It's easy to use and offers plenty of options, but is based on an outdated Flash platform that could create installation problems for some. The DPS App lets you keep an eye on efficiency, wattage, voltage, and temperature, along with certain CPU and GPU parameters. You can also set the fan profile to one of three modes: silent, performance, and zero fan (semi-passive mode). Plus, you're able to configure the fan's RGB lighting, which seems to be the key feature of this PSU. 

The TPG-0850D-R looks a lot like its higher-end siblings with the well-ventilated chassis and modular cabling design. Its 850W maximum power is covered well by the number of included cables/connectors, while the CSH platform it employs is definitely a reliable choice. That's why TT supports this unit with an extra-long 10-year warranty, after all.


We're looking at an 80 PLUS Gold-rated power supply with the 50℃ temperature rating recommended by the ATX specification. According to Thermaltake, peak power reaches 1020W, or 120% of the PSU's nominal max capacity. That's way up there, though you really shouldn't overload your power supply. If you do, peak power shouldn't be applied for more than a few seconds (a minute tops) or you risk destroying it.

The suite of protection features is complete, according to Thermaltake's spec sheet. Meanwhile, the cooling fan uses a hydro-dynamic bearing that sports a longer lifetime than double ball-bearing fans. This, along with Japanese capacitors, helps give the TPG-0850D-R a MTBF of 120,000 hours, even exceeding the generous warranty.

Finally, the unit's dimensions are on the large side considering you can find much shallower power supplies with similar capacity. 

Power Specifications

Max. PowerAmps252570.8330.8
Total Max. Power (W)850

The single +12V rail can deliver almost 850W, making it more than ample for high-end gaming PCs. The minor rails have increased capacity as well, with 130W maximum combined power. Modern systems don't use those rails much, so there's no need for higher amperage at 5V and 3.3V. On the other hand, the 5VSB rail is still important, and the stronger it is the better. Here, the 5VSB rail is rated at 3A, though according to our measurements over-current protection is set much higher, giving you plenty of headroom for transient loads.

Cables And Connectors

Modular Cables
DescriptionCable CountConnector Count (Total)Gauge
ATX connector 20+4 pin (600mm)1118AWG
4+4 pin EPS12V (600mm)1118AWG
6+2 pin PCIe (550mm+150mm)3618AWG
SATA (540mm+150mm+150mm+150mm)31218AWG
Four-pin Molex (550mm+150mm+150mm+150mm)2818AWG
FDD Adapter (+100mm)1118AWG
USB Cable (+600mm)11-

The PCIe connector count is sufficient for a 850W power supply. However, the single EPS connector looks odd. Normally a high-end 850W PSU should have two of them, both available at the same time.

At least the SATA connector count should cover your needs, and the number of peripheral four-pin Molex connectors is also high.

Power Distribution

Since this PSU features a single +12V rail, we do not have anything to say about its power distribution.

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.
  • powernod
    -It's not exactly a PSU-related question but more likely a general one.
    From the pictures from the monitoring software, i can notice that this software is able to measure CPU and GPU temperature. Do you have any idea if such monitoring is (relatively) accurate?
    -Excellent review Aris !!
  • Malik 722
    in corsair link software atleast both cpu and gpu temperatures are accurate.
  • Aris_Mp
    it takes readings from the system's (actually the individual components') sensors. If those are accurate then the software's readings will be accurate as well. Normally they are accurate.
  • Nuckles_56
    That 12V transient response was certainly interesting, I don't think I've seen one do anything like that before
  • turkey3_scratch
    18886218 said:
    That 12V transient response was certainly interesting, I don't think I've seen one do anything like that before

    Do what?
  • Nuckles_56
    18886236 said:
    18886218 said:
    That 12V transient response was certainly interesting, I don't think I've seen one do anything like that before

    Do what?

    Go and plummet back down to almost 0V during the test
  • turkey3_scratch
    18887052 said:
    18886236 said:
    18886218 said:
    That 12V transient response was certainly interesting, I don't think I've seen one do anything like that before

    Do what?

    Go and plummet back down to almost 0V during the test

    I don't think you're reading the transient response graph properly. It's not a measure of voltage but a measure of ripple (well, technically that is a measure of voltage but it's more a measure of instantaneous offsets of an average, or a highly zoomed in sector).

    That or I am just missing something. I probably am. Not sure what I'm missing though. Forgive my ignorance.
  • Nuckles_56
    For this graph I hope that I'm not reading it that badly wrong
  • Aris_Mp
    yes this is something really weird indeed.
  • sparkyman215
    Fantastic review Aris! I absolutely love reading in depth articles about anything. Terrible PSU for the price, but it's an awesome review. Congrats!