FSP Hydro G Pro 1000W ATX v3.0 Power Supply Review

The FSP Hydro G Pro 1000W has top-notch build quality and it is ATX v3.0 and PCIe 5.0 ready.

FSP Hydro G Pro 1000W ATX v3.0
(Image: © Tom's Hardware)

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Protection Features

Check out our PSUs 101 article to learn more about PSU protection features.

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OCP (Cold @ 21°C)12V: 105.2A (126.25%), 12.141V 5V: 24.2A (121%), 5.033V 3.3V: 25A (125%), 3.335V 5VSB: 3.8A (152%), 5.021V
OCP (Hot @ 41°C)12V: 104.8A (125.77%), 12.152V 5V: 22.1A (110.5%), 5.044V 3.3V: 22.5A (112.5%), 3.343V 5VSB: 3.9A (156%), 5.021V
OPP (Cold @ 27°C)1277W (127.7%)
OPP (Hot @ 44°C)1272.06W (127.21%)
OTP✓ (97°C @ secondary side)
SCP12V to Earth: ✓ 5V to Earth: ✓ 3.3V to Earth: ✓ 5VSB to Earth: ✓ -12V to Earth: ✓
PWR_OKProper operation
SIPSurge: MOV Inrush: NTC Thermistor & Bypass relay

The OCP triggering points are correctly set on all rails, and the same goes for OPP. The remaining protection features are present and work well. 

DC Power Sequencing

According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.

No problems here since the 3.3V rail is always lower than the other two. 

Cross Load Tests

To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

Load Regulation Charts

Efficiency Graph

(Image credit: Tom's Hardware)

Ripple Graphs

The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.

Infrared Images

We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified Fluke Ti480 PRO camera able to deliver an IR resolution of 640x480 (307,200 pixels).

The temperatures inside the PSU are low, with the filtering caps on the secondary side being among the coolest parts, which is highly beneficiary for their health. 

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Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.