Thermaltake TR2 RX 750W PSU - Testing the TR2 RX 750W

Article Index
Thermaltake TR2 RX 750W PSU
750W PSu, Specs, Cables and More
Inside the PSU and Test Setup
Testing the TR2 RX 750W

Testing - 5W, 380W & 680W:

We initially plugged the PSU into an EZ PSU Tester 3 in order to power it on for our "idle" measurements.  As noticed below, the voltage rails were fairly stable with no load, but these aren't necessarily indicative of overall load performance.  According to our Kill-a-Watt, the power draw was 5W.  We thought of throwing out the results, but thought it would be interesting to include and compare with other power supplies to see how they manage a non-load situation, and how much power the PSU itself will draw.  This PSU claims to have active PFC and this should improve efficiency.  Our equipment showed 0.67 without a load.  With a 380W load the PFC measurement is 0.96 and at 680W, the PFC measures 0.99.  These are pretty good results that rate a little better than other PSUs we've seen recently.

This test system has undergone an upgrade for this PSU test and we had to keep things running at stock speeds as it is pretty much the same platform that we used to test the 1200W Ultra PSU .  In order to not blow up the PSU, we hooked up a pair of Radeon HD4870 in CrossfireX as well as a GTX 260 for PhysX under Windows 7.  In the end we controlled the load so that we could maintain a maximum continuous load of ~680W.




The Thermaltake TR2 RX 750W Power Supply doesn't appear to have much ripple, but there certainly is some noise on the rails.  This PSU in fact is one of the electrically "noisiest" PSUs we've seen from Thermaltake in a long while.  It still stays within ATX specs of 120mV ripple and noise on the 12v rails and 50mV on the 3.3v and 5.0v rails, but it certainly isn't a high-end, low-noise unit.  Even though the +12v rail above looks pretty fuzzy, it still stays well within spec at 82mV maximum noise/ripple.  The -12v rails is slightly better at 70mV, while the 3.3v and 5.0v rails top out at 32mV noise and ripple.

(Click for larger chart)


(Click for larger chart)


The voltages are very solid though and the 12v line is perhaps the most unstable of them all and it only varies .5v from top to bottom.  The -12v rail is rock solid as are the +5v and 3.3v lines.  They fluctuate 0.18 volts on the 5v rail and 0.02 volts on the 3.3v line.  That is excellent performance for sure.




The Thermaltake TR2 TX 750w PSU is a decent piece of kit for a mainstream PC.  This PSU comes equipped with one large 56A +12v rail and supports 4 PCIe devices - 2x 6-pin and 2x 8-pin.  It is mostly modular and features a nice large fan that provides very good cooling to this unit under normal circumstances.  When pulling 680W through this unit it stayed nice and cool and we had no stability issues at all.  While it is not the most "noiseless" PSU we've seen, it stays within specification and would work on any mainstream PC on the market today and tomorrow. Overall, this PSU was solid and performed very well.  It ran one SSD two HD4870 cards in CrossfireX as well as a GTX 260 for PhysX.  Not only that, but it also managed to run several fans, and a CoolIT Domino cooling system that was strapped on a power hungry Core i7 processor.  Although we didn't take it to the max, a load of 680W is going to be pretty standard for this PSU.


  • Rated at 750W continuous output
  • Modular design helps tame cable clutter
  • Appears stable with a rather powerful system
  • Short Circuit protection works (tested by accident)
  • Cheap power at $0.16 / Watt (MSRP)



  • Fair bit of electrical noise
  • Only four PCIe connectors - can't run SLI/Crossfire + PhysX



For those of you looking for a decent power supply without spending hundreds and hundreds of dollars, the Thermaltake TR2 RX 750W Modular Power Supply may be exactly what you're looking for.  It does a good job and does exactly what it says it can do.

Please post your feedback at the comments link below.  We'd love to hear your thoughts.  Don't forget to check out our PSU Testing Methods as they will be updated to show how we test PSUs.