Corsair TX850w ATX PSU
The first words that spring to mind are WOW WOW WOW. The TX850 is really that good. During room temperature testing, the voltage stability was excellent with all rails staying extremely close to their ideal values. Even when placing the unit in some nasty crossloading situations, it just wouldn't flinch and continued to provide rock solid voltages on the most important rails. In an attempt to give the TX850 something to chew on, we loaded the unit all the way up to 920w, but it just gave the TX a chance to prove what a tough cookie it was and happily carried on delivering perfectly acceptable voltages.
Sticking a PSU in our new 'hot box' warmed all the way up to 50°C is normally more than enough to make any unit cry, but yet again the TX850 pushed out numbers almost identical to the room temperature results, showing that the unit can happily deliver its full 850w load in even the hottest of environments. Efficiency was also close to being the best we've ever seen, with the TX managing over 89% efficiency at medium load levels and no lower than 86% under any other conditions.
Although it's kind of hard to comment on the noise output of the unit when you've got a 1600w load tester whirring away in the background and several high power Delta fans moving air around the hot box, the TX850 certainly seemed to be extremely quiet all the way up to a 700w load. Only when pushed past this point did the fan start to spin up to counteract the heat in our ambient load tests.
As we've come to expect from a Corsair spec'd unit, the TX850 is extremely well-built and uses some of the best internal components. There's very little to dislike about the unit visually either, with its rugged powdercoated finish and sleeved cables. If I was to nit-pick, I would like to have seen the sleeved mesh go all the way into the unit, instead of stopping a couple of millimetres short, but I guess you could argue that it puts form over functionality.
Available from Ebuyer for £111.64 the TX850 comes in at a competitive price point, and in my opinion at least - is worth every penny.
- Extremely stable rails even at full load @ 50c.
- Efficiency bordering on 90% at medium loads.
- Great looks.
- Plenty of cables & support for all hardware.
- Performed really well in our cross load tests.
- High quality internal components.
- The -12v rail does get a bit high on a heavy cross load, but this is extremely unlikely to occur in a normal PC.
- Makes a bit of a racket at 850w load.
- Corsair need to make a modular version for all us neat freaks :)
- Absolutely nothing.
Thanks to Corsair for sending the TX850W in for review. Discuss this review in our forums.