CIT TFX-300W 300W Silver TFX Power Supply - 80mm Fan
CiT
CIT TFX-300W 300W Silver TFX Power Supply - 80mm Fan
The CIT TFX-300W is a compact 300W power supply built to the TFX 12V v2.31 standard, designed for small-form-factor PC builds where space is tight. It pairs a low-noise 80mm fan with a strong 12V rail to run graphics cards and demanding hardware reliably in confined cases.
Why this product
TFX standard fits small cases
At 85mm × 65mm × 175mm, it meets the TFX form factor for compact desktop builds where standard ATX supplies do not fit.
18A 12V rail for GPU power
The dedicated 12V rail provides stable output to support high-end graphics cards and demanding system components without voltage sag.
Quiet operation under 17 dB
An 80mm fan with intelligent speed control keeps noise below 17 dB, important when space constraints often mean the PSU sits close to the listener.
Multi-layer electrical protection
OVP, UVP, OPP and SCP safeguards shield connected hardware from overvoltage, undervoltage, overpower and short-circuit faults.
- Capacity300W
- Form factorTFX 12V v2.31
- Fan size80mm
- Noise level<17 dBA
- 12V rail current18A
- Dimensions (W × H × D)85mm × 65mm × 175mm
- SKUCIT-706
- EAN5055492413260
- Small-form-factor cases that accept TFX 12V v2.31 power supplies.
- Single 20+4 pin main connector and one 4+4 pin 12V connector suit most modern motherboards.
- Three SATA and one 4-pin Molex connector support drives and legacy peripherals.
- Does not include a mains plug; you must supply your own for your local power standard.
- At 300W, it does not suit builds with multiple high-power GPUs or very high-end dual-socket server platforms.
Best for
- SFF (small-form-factor) PC builders
- Quiet builds in confined spaces
- Mid-range graphics card systems
- Budget-conscious compact PC upgrades
Trade-offs
- Full-size ATX cases: TFX form factor does not fit standard ATX chassis; your case must be designed for TFX supplies.
- High-power builds: 300W is below the threshold for enthusiast dual-GPU systems or very high-end single-GPU setups.
- Server or workstation use: Designed for desktop PCs, not data centre or professional rackmount applications.
- Hot environments: Operating range stops at 40°C; unsuitable for unventilated or very warm rooms.
CiT have launched its first TFX power supply, inject your PC system with the TFX-300 it is a TFX 12 V v2.31 compliant, small and compact for small desktop cases. Expanding the scope of SFF design possibilities. The best choice for system builders with features that enthusiasts want such as all silver exterior coating, low noise 80mm fan, and flat black cables. In addition, the TFX-300 features a strong 12V rail design supports high stability outputs for even the most demanding hardware to provide reliable and high-performing system operation.
General
| Brand | CIT |
|---|---|
| Colour | Silver |
| Part Number | CIT-TFX-300W |
Fan
| Fan type | 80mm with intelligent speed control |
|---|---|
| Cooling design | Honeycomb ventilation for optimal heat dissipation |
Performance
| Total power | 300W |
|---|---|
| +12V rail current | 18A |
| Efficiency | >72% |
| Input voltage range | 200–230 VAC |
| Input frequency | 50–60 Hz |
| Hold-up time | 10–40 ms |
Acoustics & power
| Noise output | <17 dBA |
|---|---|
| Operating temperature | 0–40°C |
| MTBF | 100,000 hours |
| Protection features | OVP, UVP, OPP, SCP |
Connectors
| 20+4 pin main | 1 |
|---|---|
| 4+4 pin 12V | 1 |
| SATA | 3 |
| 4-pin Molex | 1 |
Physical
| Dimensions (W × H × D) | 85mm × 65mm × 175mm |
|---|---|
| Net weight | 0.83 kg |
| Certifications | CE, UKCA, FCC, CB, REACH, EAC, RoHS |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.