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XPG Pylon 650W Power Supply Review

A decent performance PSU with a good price.

XPG Pylon 650
(Image: © Tom's Hardware)

Our Verdict

The XPG Pylon 650 is a top offering in this efficiency and wattage category.

For

  • Full power at 40 degrees Celsius
  • Good overall performance
  • Build quality is high enough
  • Low inrush currents
  • Highly efficient 5VSB rail
  • FDB fan
  • Long cables and 2x EPS connectors
  • Compact dimensions
  • Low EMI emissions
  • Compatible with the Alternative Sleep Mode

Against

  • Not modular and both EPS connectors are on the same cable
  • Lower than 17ms hold-up time
  • Transient response is not so good
  • Ripple at 12V could be lower
  • Gets noisy at higher loads (>450W)

The XPG Pylon 650W is a very good offering in the category of affordable, mid-range PSUs, taking the lead from most of its competitors. Only the Cooler Master MWE Bronze with similar capacity achieves higher overall performance. Still, the Pylon has a quieter operation, although its fan speed profile could be a bit more relaxed. If you need RGB lighting and you don't have a problem spending more, the Corsair CX650F RGB is another option in this category. For higher-end offerings in the 650W category, check our best PSU picks

XPG decided to enter the affordable PSU category with the new Pylon series, consisting of four models with capacities ranging from 450W to 750W. All have ratings from both 80 PLUS (Bronze) and Cybenetics (Silver) and use a platform offered by Channel Well Technology (CWT). The Pylon with 650W max power will be this review's main subject. It has enough power to support a stock Nvidia RTX 3060 and an AMD Ryzen 5 5600X CPU, allowing you to build a competent gaming system. 

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XPG Pylon 650

(Image credit: Tom's Hardware)

Product Photos

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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There are no modular cables in the Pylon units, and this will probably be a let down for most users, but fixed cables cost less and allow for lower price tags. The Pylon 650 has the same compact dimensions as the other models in this line, and it uses a fluid dynamic bearing from Hong Hua. It is not common to see an FDB fan in this category,  which besides lower noise output, has a higher lifetime, as well. Finally, the warranty is three-years long, which is satisfactory, but Thermaltake offers five-years in its Smart BM2 line, which uses the same CWT platform without the part upgrades that XPG asked for. 

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XPG Pylon 650

(Image credit: Tom's Hardware)

Product Photos

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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Specifications

Manufacturer (OEM)

CWT

Max. DC Output

650W

Efficiency

80 PLUS Bronze, Cybenetics Silver (85-87%)

Noise

Cybenetics S++ (30-35 dB[A])

Modular

Intel C6/C7 Power State Support

Operating Temperature (Continuous Full Load)

0 - 40°C

Over Voltage Protection

Under Voltage Protection

Over Power Protection

Over Current (+12V) Protection

Over Temperature Protection

Short Circuit Protection

Surge Protection

Inrush Current Protection

Fan Failure Protection

No Load Operation

Cooling

120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)

Semi-Passive Operation

Dimensions (W x H x D)

150 x 85 x 140mm

Weight

1.97 kg (4.34 lb)

Form Factor

ATX12V v2.52, EPS 2.92

Warranty

3 Years

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps2020542.5
Watts11064812.53.6
Total Max. Power (W)650

Cables & Connectors

Native Cables
DescriptionCable CountConnector Count (Total)GaugeIn Cable Caps
ATX connector 20+4 pin (660mm)1118-22AWGNo
8 pin EPS12V (650mm) / 4+4 pinEPS12V (+150mm)11 / 118AWGNo
6+2 pin PCIe (560mm+150mm)2418AWGNo
SATA (560mm+150mm+150mm) / 4-pin Molex (+150mm)26 / 218AWGNo
SATA (560mm+150mm) / 4-pin Molex (+150mm) / FDD (+150mm)12 / 1 / 118-20AWGNo
Modular Cables
AC Power Cord (1380mm) - C13 coupler1118AWG-

The PSU has two EPS connectors, which is an asset, but the problem is that both are installed on the same cable, so you cannot fully utilize them. The proper way to offer two EPS connectors is through dedicated cables. 

All of the cables are long enough, and there are an adequate number of peripheral connectors, although it would be better to replace the FDD connector with a 4-pin Molex one. Finally, the distance between the peripheral connectors is long enough, at 150mm.

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XPG Pylon 650

(Image credit: Tom's Hardware)

Cable Photos

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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Component Analysis

We strongly encourage you to have a look at our PSUs 101 article, which provides valuable information about PSUs and their operation, allowing you to better understand the components we're about to discuss.

General Data-
Manufacturer (OEM)CWT
PCB TypeSingle Sided
Primary Side-
Transient Filter4x Y caps, 2x X caps, 2x CM chokes, 1x MOV, 1x CAP200DG (Discharge IC)
Inrush ProtectionNTC Thermistor SCK - 2R58 (2.5 Ohm)
Bridge Rectifier(s)
1x GBU1506 (600V, 15A @ 100°C)
APFC MOSFETs
2x Great Power GP18S50G (500V, 18A, Rds(on): 0.19Ohm)
APFC Boost Diode
1x On Semiconductor FFSP0665A (650V, 6A @ 153°C)
Bulk Cap(s)
1x Nippon Chemi-Con (400V, 470uF, 2,000h @ 105°C, KMW)
Main Switchers
2x Silan Microelectronics SVF20N50F (500V, 12.6A @ 100°C, Rds(on): 0.27Ohm)
PFC/PWM Combo ControllerChampion CM6800TX & Champion CM03X
Topology
Primary side: APFC, Double Forward
Secondary side: Passive Rectification (12V) & DC-DC converters (5V & 3.3V)
Secondary Side-
+12V4x PFC PFR30L60CT SBR (60V, 30A)
5V & 3.3V4x Sync Power SPN3006 (30V, 57A @ 100°C, Rds(on): 5.5mOhm)
PWM Controller: ANPEC APW7159C
Filtering Capacitors

Electrolytic: 5x Elite (2-5,000h @ 105°C, ED), 5x Elite (2-5,000h @ 105°C, EK), 4x Elite (4-10,000h @ 105°C, EY), 2x Elite (3-6,000h @ 105°C, EV), 1x Elite (3-6,000h @ 105°C, EG), 2x Elite (2,000h @ 105°C, PF)
Polymer: 2x Elite

Supervisor ICIN1S429I - DCG
Fan ModelHong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing Fan)
5VSB Circuit-
Standby PWM ControllerPower Integrations TNY287PG
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XPG Pylon 650

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Overall Photos

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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The heat sinks are small on both the primary and secondary sides. Despite the small PCB, there is ample space between components, so the airflow is good. The only cramped area is hosting the fixed cables, which can only be fixed with a modular board. The latter would notably increase the production cost, though. 

The build quality is good, and XPG used Elite caps on the secondary side to boost reliability without increasing the BOM (bill of materials) cost. The FDB fan is also an asset to this product. 

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XPG Pylon 650

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Transient filter

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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The EMI filter includes all necessary parts to restrict EMI emissions effectively. It also has a discharge IC to provide a small efficiency boost. 

XPG Pylon 650

(Image credit: Tom's Hardware)

A single bridge rectifier is used, which is bolted onto a small heat sink. 

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XPG Pylon 650

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APFC converter

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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The APFC converter uses two Great Power FETs and a single boost diode, provided by On Semiconductor. The bulk cap is my Chemi-Con, and it is the largest that this platform can support. 

The combo PFC/PWM controller is a Champion CM6800 IC, which was popular some years ago. It is supported by a CM03X controller, which restricts energy losses when the PSU is on standby. 

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XPG Pylon 650

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Main FETs and primary transformer

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XPG Pylon 650

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The main FETs are by Silan Microelectronics and have higher RDS (on) than the APFC converter's FETs, so more energy will go wasted on them. 

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XPG Pylon 650

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12V SBRs and VRMs

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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The 12V rail uses Schottky Barrier Diodes (SBRs) instead of FETs. SBRs allow for lower ripple, but they are not so efficient because they have higher voltage drops than FETs, where energy losses are tied to the RDS (on) value. 

CWT installed a pair of DC-DC converters for the minor rails, which use four FETs and an ANPEC PWM controller. 

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XPG Pylon 650

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Filtering caps

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XPG Pylon 650

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XPG Pylon 650

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All caps on the secondary side, both electrolytic and polymer, are provided by Elite, so they are of good quality. In this category, Japanese caps would increase the price notably, so Elite is a good alternative. 

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XPG Pylon 650

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5VSB Circuit

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XPG Pylon 650

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The standby PWM controller is a Power Integrations TNY287PG

XPG Pylon 650

(Image credit: Tom's Hardware)

For the supervisor IC (IN1S429I - DCG) there is no information available. 

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XPG Pylon 650

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Soldering quality

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XPG Pylon 650

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XPG Pylon 650

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XPG Pylon 650

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Soldering quality is satisfactory. 

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XPG Pylon 650

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Cooling fan

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XPG Pylon 650

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It is great to see an FDB fan in this category, where rifle and sleeve bearing fans are mostly used. 

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.
  • maxamillionfeettall
    Nice! So both the 750w and 650w units have the elite secondary caps. Makes me wonder what the 550w version has since the 450w version uses capxon.

    The FDB fan is a big plus, kudos for that.
    Reply