With the 12VHPWR connector now mandatory for the latest NVIDIA RTX 40 series graphics cards, users looking to upgrade are compelled to embrace this new standard. Although NVIDIA and its partners provide an adapter with the graphics card to maintain compatibility with existing power supplies, pairing your system with the latest power supply compliant with ATX 3.0 and PCIe 5.0 standards is always the best choice.

The FSP Hydro PTM PRO ATX3.0(PCIe5.0) 1200W, which we are examining today, is one of the ATX 3.0 power supplies designed to support the RTX 40 series out of the box, especially higher-end tier models like the GeForce RTX 4090. Let’s dive in and see what the FSP Hydro PTM PRO ATX3.0(PCIe5.0) 1200W has to offer.


ModelHPT2-1200M, Gen5
Rated Output Power1200W
Form FactorATX
80 PLUS CertificationPlatinum
Input Voltage100-240V
Input Current14-9A
Input Frequency50-60Hz
Efficiency≥92% at typical load
Fan TypeFDB Fan, 135mm
Dimensions(L x W x H)150 x 190 x 86 mm
ProtectionOCP, OVP, SCP, OPP, OTP, UVP


  • FSP Hydro PTM Pro 1200W 01

FSP prominently displays on the packaging that the Hydro PTM PRO ATX3.0(PCIe5.0) 1200W supports the 12VHPWR connector required by the new NVIDIA RTX 40 series graphics cards. This ensures this critical information won’t be overlooked when deciding which power supply to purchase. It is designed to handle the power demands of any RTX 40 series card, including the RTX 4090, which can draw more than 600W when pushed to the limit.

In addition to 12VHPWR support, the PSU has a fully modular design, allowing for easy cable management. It also features an Eco switch to control fan speed for near-silent operation and includes a comprehensive set of safety protections you’d expect from a high-quality power supply.

The box contains the Hydro PTM PRO ATX3.0(PCIe5.0) 1200W, a power cord, various power cables, screws, and Velcro straps. Among the power cables, you’ll find two standard 12V EPS cables, an ATX 24-pin cable, three PCIe 6+2-pin cables, a 12VHPWR cable, and five SATA power cables, two of which also include 4-pin Molex connectors.

The FSP Hydro PTM PRO ATX3.0(PCIe5.0) 1200W

  • FSP Hydro PTM Pro 1200W 08

The PSU measures a length of 190mm, unlike the standard ATX power supplies we usually see that are only 150mm in length. So you will need to make sure that the PC case you’re using has enough clearance to house this power supply. Since the fan grill screws lack the typical warranty sticker that would restrict access, you can easily remove them to clean out the dust build-up from the year. This makes it more straightforward to tackle those large dust clumps, as long as you know what you’re doing.

FSP Hydro PTM Pro 1200W 07

The spec label reveals its compatibility with the latest NVIDIA RTX 40 series graphics cards and likely other future GPUs that use either the 12VHPWR connector or the additional four PCIe 6+2-pin connectors.

FSP Hydro PTM Pro 1200W 10

Looking at the connector layout, we can see a 12VHPWR and four PCIe 6+2-pin headers on the first row that are mainly for the graphics cards. The rest of the headers are the very standard headers for the CPU, motherboard 24-pin ATX header, and the peripherals i.e SATA, Molex, etc.

FSP Hydro PTM Pro 1200W 11

At the back of the power supply, there’s a standard honeycomb grille for exhaust and a switch for toggling the semi-fanless Eco mode, which minimizes noise during low system loads. This is the feature you will find on many of the FSP power supplies nowadays. When Eco mode is enabled, the fan stays off until the load exceeds 30%, making it an excellent option for those seeking quiet PC builds, allowing for near-silent operation when the system is idle.

User Experience

CPUIntel Core i9-14900K
MotherboardASUS ROG Maximus Z790 APEX ENCORE
MemoryKingston Fury Renegade DDR5 RGB @6400MT/s CL32
Graphics CardNVIDIA GeForce RTX 4090
Power SupplyHydro PTM PRO ATX3.0 (PCIe 5.0) 1200W
Primary StorageKingston KC3000 2TB NVMe SSD
Secondary StorageWD Black 6TB
CPU CoolerCooler Master MasterLiquid PL360 Flux
ChassisStreacom Open Benchtable BC1 V2
Operating SystemWindows 11 64bit

For everyday tasks like light gaming, web browsing, and general entertainment, the total system power consumption typically stays below 250W. The maximum temperature recorded under light use is around 42°C and the fan will not spin until the power supply load is high enough. You don’t have to worry about this though because it’s a known feature that is present on many high-end power supplies to reduce the noise output from your system.

We also conducted a series of benchmark tests using ROG RealBench, Cinebench R23, Prime95, 3DMark, and Procyon to evaluate the performance under load. During these tests, the system’s power draw ranged between 680W and 760W, which is well within the power supply’s capacity, offering ample headroom for additional power needs. The highest temperature recorded during these tests was about 64°C, which is within the safe operating range according to the technical specifications.


The Hydro PTM PRO ATX3.0 (PCIe 5.0) 1200W meets all my expectations for a platinum-rated power supply in terms of performance. It delivered stable power output throughout our short test, especially its rail stability which was exceptionally good. We have no issue with going all out on our latest-gen Intel Core i9-14900K, ASUS ROG Maximus Z790 APEX ENCORE, and GeForce RTX 4090 powered test system.

Another thing to take note is that as the 12VHPWR connector becomes more common, the Hydro PTM PRO ATX3.0 (PCIe 5.0) 1200W is a reliable option for those planning to invest in high-end RTX 40 series graphics cards like the RTX 4080, RTX 4080 SUPER, and RTX 4090. The RM 1,199 price tag might seem steep, but given what the Hydro PTM PRO ATX3.0 (PCIe 5.0) 1200W can do and the 10-year long warranty, I’d say the price is still reasonable.

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