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SilverStone TX400x Gold 400W 80PLUS Gold
400W TFX12V / EPS12V 80PLUS Gold power supply
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A compact, quiet, high-efficiency TFX power supply
The SilverStone TX400x Gold is a TFX-format power supply designed for compact PCs: slim cases, HTPCs, office workstations, or small home servers. Capable of delivering continuous power of 400 W at 40 °C, it is designed for 24/7 operation. It is suitable for both individuals building their own systems and professionals looking for a reliable, discreet, and energy-efficient solution.
Efficiency, quiet operation, and reliability
Certified 80 PLUS Gold, the TX400x Gold delivers efficiency of 87 to 90 % between 20 and 100 % load. This efficiency limits energy loss and heat generation, helping reduce power consumption and protect your components. Its reinforced single +12V rail can deliver up to 33,3 A, making it suitable for high-performance configurations and overclocking.
The 80 mm HYB fan provides effective cooling while remaining quiet, with noise levels as low as 18 dBA. Thanks to its compact dimensions of 85 × 65 × 175 mm and its power density of 413,7 W/L, it fits easily into space-constrained cases. Its active PFC, multiple protection features, and 6+2-pin PCI-E connector ensure safety and compatibility with a dedicated graphics card.
Key features:
- TFX power supply with 400 W continuous power at 40 °C, designed for 24/7 operation
- 80 PLUS Gold certification: 87 to 90 % efficiency (20 to 100 % load)
- Single +12V rail: 33,3 A (399,6 W combined)
- Active PFC (PF > 0,9 at full load)
- Ultra-quiet 80 mm HYB fan: 18 dBA minimum
- Protection against overloads, overcurrents, overvoltage, short circuits, undervoltage, and overheating
- Supports a 6+2-pin PCI-E connector
- Connectors: 1 × 24/20-pin motherboard, 1 × 8/4-pin EPS/ATX 12V, 2 × 8/6-pin PCIe, 6 × SATA, 2 × 4-pin peripheral, 1 × floppy
- Input voltage: 90 ~ 264 Vrms (47 ~ 63 Hz)
- MTBF: 100 000 hours
- Dimensions: 85 × 65 × 175 mm - Weight: 1,33 kg
- Black finish (lead-free paint)
Select your criteria
General information |
Product name |
SilverStone TX400x Gold 400W 80PLUS Gold |
Brand |
SilverStone | |
Model |
SST-TX400-GF | |
Power and Efficiency |
Power |
400 W |
80 PLUS certification |
Yes | |
80 PLUS / Cybenetics certification |
80 PLUS Gold | |
Connectivity |
Modular |
No |
Modularity |
Non-modular | |
Power connector(s) |
6 X Serial ATA power supply | |
| 1 X ATX 20 + 4 Pin | ||
| 1 X Molex Floppy Disk 4 Pin Female | ||
| 2 X Molex (4 Pin) Female | ||
| 2 X PCI Express 6 + 2 Pin | ||
| 1 X +12V (Power supply P8 - 2 x P4) | ||
Configurator |
PSU-CM compatibility |
+12V P4 |
| +12V P4 and +12V P4 | ||
| +12V P8 | ||
Cooling |
Fan size |
80mm |
Silent |
Yes | |
Power supply type (PC) |
Active | |
Design |
Power format |
TFX |
Power supply standard |
EPS12V | |
| TFX12V | ||
ATX 3.0 |
No | |
ATX 3.1 |
No | |
Multi-GPU |
None | |
Typical use |
Desktop computer | |
Physical characteristics |
Color |
Black |
LED RGB |
No | |
Height |
65 mm | |
Width |
85 mm | |
Length |
175 mm | |
Weight |
1.33 kg | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
Harmonised legal guarantee notice
|
|
Safety Information |
Responsible person |
SilverStone Technology GmbH |
Postal address |
Kaiserswerther Str. 215, 40474 Düsseldorf, Allemagne | |
Electronic Address |
info.eu@silverstonetek.de |
Product referenced on 9 Nov 2026
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