fuente modular o no modular cual conviene para PC gaming

For a gaming PC, choosing between a modular power supply or a non-modular one comes down to chassis space and budget: a modular design aids airflow and simplifies assembly by eliminating surplus cabling, whilst a non-modular unit delivers identical electrical performance at a lower cost if the case has enough room to tuck cables away.

Table of contents

1. Technical differences between modular, semi-modular and non-modular cabling
2. Key selection criteria for a gaming power supply
3. 80 PLUS efficiency and electrical standards: what to look for in Europe
4. Modern connector types and power delivery capacity
5. Common mistakes when buying a PC power supply
6. Recommended models by user profile
7. Frequently asked questions

1. Technical differences between modular, semi-modular and non-modular cabling

The primary difference between these three variants lies solely in how the cables connect to the power supply unit chassis itself, without this directly affecting the stability of the main internal voltage rails (+12V, +5V or +3.3V).

+------------------+-------------------------------------------------------+------------------------------------------------------+
| PSU type         | Cable connection                                      | Primary impact on the build                          |
+------------------+-------------------------------------------------------+------------------------------------------------------+
| Non-modular      | Hardwired/soldered to the internal PCB.               | All cables must remain inside the case regardless.   |
| Semi-modular     | 24-pin ATX and EPS are fixed; the rest detachable.    | Reduces unnecessary SATA and PCIe cables.            |
| 100% Modular     | All cables connect via external headers/pins.         | Maximum ease of assembly and tidy cable routing.     |
+------------------+-------------------------------------------------------+------------------------------------------------------+

Non-modular power supplies

In a non-modular power supply, all cable harnesses are soldered directly to the printed circuit board (PCB).

• Advantages: Lower manufacturing costs by doing away with daughterboards and additional connectors; fewer mechanical contact resistance points.
• Disadvantages: Unused cables (such as Molex connectors or spare SATA cables) must be bundled and secured in the lower compartment of the case, which can restrict airflow in confined spaces.

Semi-modular power supplies

These keep the essential cables hardwired to boot the system (the 24-pin ATX connector for the motherboard and the 8-pin EPS connector for the CPU), whilst leaving the PCIe connectors for the graphics card and SATA/Molex peripherals as plug-in modules. They strike a balance between cost containment and internal neatness.

Modular power supplies

These feature no hardwired cables whatsoever. Each cable harness is connected independently according to the exact requirements of the build.

• Advantages: They simplify cable routing in compact cases (Micro-ATX or Mini-ITX), facilitate the individual replacement of damaged cables, and allow the power supply unit to be mounted first and the cables attached afterwards.
• Disadvantages: Higher cost and rear sockets that add between 10 and 15 mm to the actual depth required for chassis installation.

2. Key selection criteria for a gaming power supply

When selecting a power supply for gaming, modularity is merely one of the mechanical factors. The internal electrical components and thermal design determine the system's overall durability.

+--------------------------------------------------------------------------------------------------+
|                               DECISIVE TECHNICAL CRITERIA                                        |
+------------------------------------+-------------------------------------------------------------+
| Fan size                        | 140 mm (higher airflow at lower RPM) versus standard 120 mm. |
| Sound pressure level               | Below 20 dB is considered inaudible in real-world use.      |
| Capacitor thermal rating           | 105 °C ensures a longer lifespan compared to 85 °C.         |
| Cable profile and length           | Flat cables and extended lengths facilitate cable routing.  |
+------------------------------------+-------------------------------------------------------------+

Fan size and acoustics

The industry standard utilises 120 mm diameter fans. A 140 mm fan features a larger blade surface area, enabling it to move the same volume of airflow (CFM) whilst spinning at lower revolutions per minute. This translates to significantly lower noise levels. Whereas standard power supplies typically operate at around 20 dB under medium load, low-noise models achieve operating figures of around 12 dB—a level that is imperceptible inside a closed chassis.

Quality of electrolytic capacitors

The primary electrolytic capacitor is subject to the greatest thermal stress and is usually the first component to fail due to electrolyte degradation. Japanese capacitors rated up to 105 °C offer considerably superior thermal cycling resistance compared to generic models rated at 85 °C, maintaining voltage ripple stability over extended periods of use.

Physical design and cable length

In mid-tower or full-tower chassis where the power supply is bottom-mounted, standard-length cables can fall short when routed behind the motherboard tray to reach the CPU EPS connector. Flat cables are easier to bend and route through chassis rubber grommets, minimising bulk behind the side panel.

3. 80 PLUS efficiency and electrical regulations: what to look for in Europe

The 80 PLUS certification, administered by CLEAResult, evaluates the percentage of energy the power supply delivers to components compared to what it draws from the wall socket; the remainder is dissipated as heat.

Minimum efficiency required by 80 PLUS at 230V EU (European mains grid)

In Europe, the nominal mains voltage is 230V, where power supplies achieve higher efficiency levels than at 115V (the standard typically used in the United States). The official minimum requirements are:

+---------------------+-------------------+-------------------+--------------------+--------------------+
| 80 PLUS Level (230V)| 10% Load          | 20% Load          | 50% Load           | 100% Load          |
+---------------------+-------------------+-------------------+--------------------+--------------------+
| Standard            | N/A               | 82%               | 85%                | 82%                |
| Bronze              | N/A               | 85%               | 88%                | 85%                |
| Silver              | N/A               | 87%               | 90%                | 87%                |
| Gold                | N/A               | 90%               | 92%                | 89%                |
| Platinum            | N/A               | 92%               | 94%                | 90%                |
| Titanium            | 90%               | 94%               | 96%                | 91%                |
+---------------------+-------------------+-------------------+--------------------+--------------------+

Technical notes:

• An 80 PLUS power supply does not maintain a flat, constant efficiency: the certification only guarantees the percentages at the specific test points (20%, 50%, and 100% load, plus 10% exclusively for Titanium).
• A power factor (PF) of 0.9 or higher is required.
• The Silver tier is commercially very uncommon; most manufacturers focus their ranges on Bronze or Gold.
• Important: 80 PLUS certification exclusively measures energy efficiency; it does not assess soldering quality, voltage rail regulation, or component durability.

Difference between legal markings and voluntary certifications

It is critical to distinguish between statutory requirements for sale and independent quality marks:

• Mandatory EU markings: The CE mark, the RoHS directive (Restriction of Hazardous Substances), and WEEE are mandatory regulatory standards for commercialisation within the EU. They do not constitute quality certificates, nor do they provide a comparative advantage over other legally compliant products.
• Independent voluntary certifications: Marks such as TÜV / TÜV Rheinland certify electrical safety via third-party laboratory testing. Certifications such as Cybenetics assess efficiency across the entire load spectrum (ETA) and provide a standardised measurement of acoustic noise (LAMBDA).

4. Modern connector types and their power delivery capacity

Connector sizing must be calculated based on the power draw of the chosen processor and graphics card.

+----------------------+--------------------+---------------------------------------------------------------+
| Connector            | Max. capacity      | Primary use                                                   |
+----------------------+--------------------+---------------------------------------------------------------+
| 8-pin EPS (4+4)      | Up to 235 W        | Motherboard CPU socket power delivery.                        |
| 8-pin PCIe (6+2)     | Up to 150 W        | Standard graphics cards (AMD Radeon / NVIDIA GeForce).        |
| 12V-2x6              | Up to 600 W        | High-power PCIe CEM 5.1 / ATX 3.1 cards.                      |
| 12VHPWR              | Up to 600 W        | Previous 16-pin standard introduced in PCIe 5.0 / ATX 3.0.   |
| SATA / 4-pin Molex   | Peripherals        | SSD/HDD storage, controllers and liquid cooling pumps.        |
+----------------------+--------------------+---------------------------------------------------------------+

• 12V-2x6 vs. 12VHPWR: The 12V-2x6 connector (PCIe CEM 5.1 specification and ATX 3.1 standard) updates the design of the 12VHPWR connector. It adjusts the relative length of the sense pins compared to the power pins, preventing the power supply from delivering current unless the connector is fully seated. This reduces the risk of failure caused by poor contact, although it is still essential to ensure the cabling remains straight and free from mechanical strain.

5. Common mistakes when buying a PC power supply

1. Equating the 80 PLUS rating with overall reliability: Assuming that an 80 PLUS Gold power supply is inherently more durable than a Bronze one. A model can achieve 90% efficiency whilst using 85 °C capacitors with a shorter estimated lifespan under high temperatures.
2. Treating CE or RoHS markings as a selling point: These marks merely represent baseline legal compliance within the European Union. Every legitimate product includes them as a mandatory regulatory requirement.
3. Calculating wattage without thermal headroom: If a system draws 450 W under full load, a 500 W power supply will constantly run at 90% capacity, operating outside its peak efficiency curve (typically around 50% load) and forcing the fan to run at high RPM.
4. Overlooking the physical dimensions of the chassis: High-wattage or modular power supplies typically measure between 160 mm and 180 mm in depth. In compact cases with fixed lower drive bays, this clearance can restrict installation or cable routing.

6. Buying recommendations by user profile

The following section analyses real-world setups for gaming PCs and technical workstations, detailing which model from the Tacens Radix range suits each case based on power output, physical connectors and internal components.

+---------------+---------+-----------------------+------------------+---------------------+-------------------+
| Reference     | Power   | Dimensions            | Fan              | Capacitors          | PCIe connectors   |
+---------------+---------+-----------------------+------------------+---------------------+-------------------+
| 1RECOX550     | 550 W   | 150 x 160 x 85 mm     | 140 mm (12 dB)   | Standard            | 1x PCIe 6+2-pin   |
| 1RECOX650     | 650 W   | 150 x 160 x 85 mm     | 140 mm (12 dB)   | Standard            | 1x PCIe 6+2-pin   |
| 1RECOX750     | 750 W   | 150 x 160 x 85 mm     | 140 mm (12 dB)   | Standard            | 2x PCIe 6+2-pin   |
| 1RECOX850     | 850 W   | 150 x 160 x 85 mm     | 140 mm (12 dB)   | Toshin Kyogo 105 °C | 2x PCIe 6+2-pin   |
+---------------+---------+-----------------------+------------------+---------------------+-------------------+

Profile 1: Entry-level gaming PC and tight budgets

• Typical configuration: 6-core CPU (e.g. Intel Core i5 or AMD Ryzen 5) paired with a GPU drawing under 150 W that requires a single power connector.
• Recommended model: Tacens Radix 1RECOX550 (550 W).
• Technical justification: This model delivers 550 W with a weight of 1350 g and dimensions of 150 x 160 x 85 mm. It includes 1x PCIe 6+2-pin, 1x EPS +12V 4+4-pin, 3x SATA and 2x Molex. It features a 140 mm fan operating at a 12 dB noise level compared to the 20 dB typical of power supplies in this segment, offering flat, extra-long black cables to facilitate cable management in standard cases without the need for extenders. It comes with TÜV certification alongside CE and RoHS compliance.

Profile 2: Mid-range gaming PC with dedicated graphics card

• Typical configuration: Mid-range processor and a GPU drawing up to 180-200 W (a single 8-pin PCIe connector), accompanied by multiple storage drives or auxiliary cooling.
• Recommended model: Tacens Radix 1RECOX650 (650 W).
• Technical justification: Delivers a 650 W output with a weight of 1400 g. It provides 1x PCIe 6+2-pin, 4x SATA, 2x Molex and 1x EPS 4+4-pin. It offers 18% more power headroom than the 550 W model to absorb transient power spikes without increasing temperatures, retaining the 140 mm fan at 12 dB and the extra-long flat cabling.

Profile 3: Advanced gaming PC with dual-power-connector GPU

• Typical configuration: High-performance GPU systems requiring two independent PCIe lines (up to 300 W combined on PCIe) and multiple fans or SSDs.
• Recommended model: Tacens Radix 1RECOX750 (750 W).
• Technical justification: Features 2x independent 6+2-pin PCIe connectors, 6x SATA and 3x 4-pin Molex, with a 150 x 160 x 85 mm chassis weighing 1479 g. Its 750 W power output allows high-end graphics cards to run near the optimal efficiency curve (50% of the PSU's total load) whilst maintaining quiet operation via its 140 mm fan.

Profile 4: High-performance gaming and workstations

• Typical configuration: Systems subjected to prolonged rendering sessions or continuous gaming with high-draw components that demand maximum thermal resistance.
• Recommended model: Tacens Radix 1RECOX850 (850 W).
• Technical justification: Delivers 850 W of power with a weight of 1548 g. Notable for its integration of 105 °C-certified Toshin Kyogo Japanese capacitors, which exhibit significantly lower thermal degradation than generic 85 °C models. Features 2x PCIe 6+2 pin, 6x SATA connectors, 3x Molex, and 1x EPS 4+4 pin, backed by a 140 mm fan and TÜV safety certifications.

Market note: If building in an extremely compact chassis (SFF / Mini-ITX form factor) that cannot accommodate standard 160 mm-long ATX power supplies, or if native power is required for graphics cards demanding a direct 600 W 12V-2x6 connector from the factory, specialist manufacturers such as Corsair (SF series) or Seasonic offer dedicated form factors for this type of integration.

7. Frequently asked questions

Does a modular power supply improve FPS in games?

No, modularity has no direct impact on GPU or CPU performance. Its purpose is purely organisational and space-saving, simplifying assembly and optimising internal airflow within the chassis.

Can modular cables be swapped between different power supplies?

No, modular cables from different brands or product ranges must never be mixed. Although the connector plugging into the graphics card or motherboard is standardised, the pinout on the PSU side varies between manufacturers, and connecting them incorrectly will cause a short circuit.

What happens if an 85 °C power supply is used instead of a 105 °C one during intensive sessions?

85 °C capacitors lose their dielectric properties faster under sustained heat than Japanese 105 °C models. This shortens their operational lifespan and, over time, increases the voltage ripple delivered to components.

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