A Look Inside
Next, we open up the power supply to take a quick look at how well things are built where it really counts. Please keep in mind that opening a PSU will void your warranty and can be dangerous.
The main board looks organized with decent soldering on the bottom side. There are is a lot of solder in some spots along with a bar of metal soldered to the common ground. It seems that the board was reworked a little from the original design with these solder runs. I have seen this same rework on an ABS 1300 Watt power supply also built by Topower. A plastic film shields the internals from shorting against the casing. The heatsinks are made of a black anodized aluminum and appear sufficient to cool a power supply of this capacity.
You can see the two large transformers that supply 12V power nestled between the heat sinks. As far as I can tell without de-soldering components, these are bound together to supply a single output that is then split to the six rails. You will also notice two large main capacitors in the PSU. They are Toshin branded capacitors rated at 200v 1200uF @ 85C. They are a lesser known Japanese brand but are definitely a step above similar capacitors from Teapo or Samson.
Here we get a look at the coils and where the modular cables join to the main PCB, all nice and neat.
And a look at the modular PCB which considering all the cables is quite neat and clean.
While I am inside the power supply, I like to trace back the rail mappings to see where things are sourced. Like many power supplies, it looks like we have virtual rails shunted off the main dual 12V source. There are six in all. The power distribution is, as follows.
Now, a couple of notes on the power distribution. First, 12V1 is dedicated to the ATX cable. In my testing, under load, my EVGA 790i SLI board draws about 8.5 amps. So, this rail will be nowhere near capacity. 12V2 is dedicated to the CPU and on my test system with a Q9650 at 4.0 GHz the CPU draws about 8.8 amps while running wPrime 2.0 to load each of the CPUs at one hundred percent. So, even with two quad processors, the 20 amps should be sufficient to power both.
12V3 and 12V4 are used for molex and SATA runs and will come nowhere near the 20 amps allocated. I would have liked to see one of these rails instead allocated to power a third PCI-E graphics card. Finally, the 12V5 and 12V6 each command 20 amps to power up any two graphics cards. There are some open questions on whether these two dedicated PCI-E outputs could handle a couple of GTX 295 or 4870X2 cards to support the claim of quad graphics support.
Well, it looks like we have some questions in need of answers. It's high time to run the Topower PowerBird 1100 through our standard high capacity power supply tests.
Last updated: Apr 7, 2020 at 12:27 pm CDT
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