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Corsair TX750M 750W Modular Power Supply Review

By: Chris Ramseyer | Other PSUs in Cases, Cooling & PSU | Posted: Sep 12, 2011 1:32 pm
TweakTown Rating: 90%Manufacturer: Corsair

Test Results


Our load tests utilize a couple of FAST ATE active load testers and a variety of other equipment such as an oscilloscope, power conditioner, temperature probe and a power consumption meter. You can read more about our standard testing approach here.


The tests performed are based around six conceivable setups that are out there and progressively load down the PSU up to the power supply's limits or 1000W, whichever comes first. Since our test equipment's limits are higher than that of the Corsair TX750M, we can test it to the maximum.






Taking a look at the result table above shows some very good results for the Corsair TX750M. Nothing surprised us here, but we already had high hopes for the unit as all the TX series power supplies we have tested in the past performed quite well too. Voltage regulation was a flat 2% across the board on all three rails. You can't ask for much more out of a power supply built for an enthusiast on a budget.


Even in the one area of testing that you would expect the unit to slip a little bit, it manages to hold strong when we looked at the DC Output quality. The TX750M starts off barely showing any ripple on the oscilloscope for the 12V rail, measuring in at 9mV peak to peak. This steadily increased to 21mV as the loads were increased to 75% of the unit's capacity. Even under full load, the TX750M managed to stay under 30mV of noise on the 12V rail.


Perhaps one of the weakest areas of the Corsair TX750M is its efficiency. The TX750M is rated for 80Plus Bronze efficiency which means it must be 82%/85%/82% efficient at 25%/50%/100% loads respectively. Corsair's new power supply starts off strong, showing around 85% efficiency at 25% load. This increased to around 86% during Test 2 which is approximately 43% load. We then saw a rapid decline in efficiency till we fully loaded down the power supply. At 82.3% efficiency, the unit is extremely close to failing the Bronze rating, but it does hang in there.



Final Thoughts


Once again, Corsair has done a great job improving the TX series of power supplies with the TX750M. It takes the great performance that we have seen in the past from the series, adds modular connectors and keeps the price affordable. It performs great for a budget power supply as far as voltage regulation and DC output quality are concerned and does achieve the 80Plus Bronze efficiency rating as advertised.


Corsair appears to have listened to the complaints about connector availability in the TX series power supplies as they changed things up for the better. They still could have done things better even more if they had applied a little more thought into which cables to make modular and how many to include. Even so, it is a step in the right direction and Rome wasn't built overnight. What matters most, though, is that Corsair has once again blended great performance at an affordable price, then backed it by a great 5-year warranty.



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