FSP FlexGURU 300W Flex ATX Power Supply Review (Page 5)

| Jan 3, 2020 at 12:48 pm CST
Rating: 91%Manufacturer: FSPModel: FSP300-50FCB

Real World Test System & Observations


Real-world testing for the FlexGURU, we had to change things up a bit. The FlexGURU simply does not have the gumption to push our standard 2990WX test platform, so we changed things up a bit for a system more representative of what it would be used for. We loaded up an ASRock ITX AM4 motherboard along with 16GB of the Corsair Vengeance Pro RGB and a Ryzen 5 3400G with onboard Radeon Vega graphics. This is not the most potent setup ever conceived but does emulate something which may go into an ultra SFF system.

Testing the CPU/APU and its onboard graphics at full stress gave us an AC draw of 120W, and the FlexGURU handled that with relative ease while only reaching 38C and no noticeable fan noise after over an hour of loading.

FSP FlexGURU 300W Flex ATX Power Supply Review 18 | TweakTown.com

We had to come up with a way to load the FlexGURU for bear, so we opted for using a 4-pin PATA (Molex) connectors to 8-pin PCIe. With that, we used the RTX 2060, which is typically put to work testing chassis thermals. The FlexGURU handled this loading admirably and showed a nominal power draw of 240W while topping out at 46-47C, where it seemed to find equilibrium.

While we were not able to able to push the FlexGURU further, we feel this was on the more extreme end of the type of loading the FlexGURU would see under any sort of sane build. The connector arrangement allowed for the adapter usage while I never recommend adapters for a GPU, in the case of the FlexGURU, it was necessary for discrete inclusion. I would ideally like to see if FSP could enable a GPU lead (6+2) on the FlexGURU in the future, whether it be via an optional cable that eliminates ancillary peripheral leads, or some other way that does not require adapters.

Last updated: Jan 4, 2020 at 06:11 am CST

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Shannon started his PC journey around the age of six in 1989. Now till present day, he has established himself in the overclocking world, spending many years pushing the limits of hardware on LN2. Shannon has worked with design and R&D on various components, including PC systems and chassis, to optimize the layout and performance for enthusiasts.

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