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Montech Century II 1200W

MontechPower supply

Century II 1200W

Released April 2025.2Press articlefunkykit.com/news/montech-introduces-century-ii-power-supplyRead 14 October 2026Available from 2025-04-15 per the launch report. KitGuru's launch article of April 15, 2025 lists the 1200W as now available. Last checked 14 October 2026.

Power
1,200W
Efficiency
80 PLUS Gold
Modular cables
Fully modular
ATX version
ATX 3.1

53 of 66 fields known.

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At a glance

All specs

SourceCalculated

General

Series
Century II1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Page title: CENTURY II 1200W in the CENTURY line of 80 PLUS Gold units.
Model numbers
Century II 1200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Model Name Century II 1200W. The maker prints no part number.
GTIN / EAN
47105627463651Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: EAN 4710562746365.
Announced
15 April 20252Press articlefunkykit.com/news/montech-introduces-century-ii-power-supplyRead 14 October 2026Article dated 2025-04-15. It says the line is available on April 15, 2025 at 9 AM Eastern Time.
Status
Available6Retailer pagemaxmybuild.com/power-supplies/montech-century-ii-1200wRead 14 October 2026Listing shows $159.90 at Amazon and Newegg, both in stock, updated 14 Oct 2026. This is a current selling price, not the launch price.
Predecessor
Not available
Successor
Not available
Launch price (US)
$129.92Press articlefunkykit.com/news/montech-introduces-century-ii-power-supplyRead 14 October 2026CENTURY II 1200 W: US$ 129.9. US price, no sales tax. KitGuru's launch article prints $129.99 and Hardware Busters prints an MSRP of $130 excluding VAT.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: MSRP (excluding VAT) $130. The stored value is the maker's launch price from the Funkykit report.
Launch price (EU)
Not available
Markets
Not available
Colours
Metallic Silver1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview text: a sleek metallic silver finish. The maker names no other colour.
Form factor
ATX1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Form Factor ATX (140).3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Type ATX12V. The maker lists form factor ATX (140).
ATX version
ATX 3.11Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: built to ATX 3.1 and PCIe 5.1 platforms. The 80 PLUS certificate type line reads ATX 3.0, ATX 3.1.
PCIe CEM version
PCIe 5.11Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: built to ATX 3.1 and PCIe 5.1 platforms, with a standard 12V-2x6 cable.
Modular cables
Fully modular1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: a fully modular design with included flat cables.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Cable Design Fully Modular.
Built by (OEM)
Shenzhen Xinweiye Technology (XWY)3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: OEM/ODM Shenzhen Xinweiye Technology Co., Ltd. Hardware Busters names the same company.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Manufacturer (OEM) Shenzhen Xinweiye Technology.

Power

Rated continuous power
1,200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Wattage 1200, Total Power 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Manufacturer-provided information: Rated Power 1200 W.
Full power rated up to
Not available
12V rail design
Single rail3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: one +12V column with 100A and 1200W.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Number of 12V rails 1.
+12V max current
100A1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +12V 100A, 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: +12V 100A, 1200W.
+12V max power
1,200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +12V 100A, 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: +12V 1200W.
+3.3V and +5V combined power
100W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table prints +3.3V 20A and +5V 20A with one 100W cell. The Cybenetics power table has one merged 100W cell for 3.3V and 5V, so 100W is the combined limit.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: one merged 100W cell for 3.3V and 5V, 20A each.
+5V standby current
3A1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +5VSB 3A, 15W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: 5VSB 3A, 15W.
AC input voltage
Lowest100Highest240V1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026AC Input 100-240Vac 50-60Hz 15A-10A.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Manufacturer-provided information: 100-240 Vrms, 15 A, 50-60 Hz.
Alternative low power mode (ALPM)
Yes3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Temperature and Compliance Info: ALPM compatible, checked.

Certifications

80 PLUS rating
80 PLUS Gold4Certification listclearesult.com/80plus/sites/80plus/files/manufacturer-certificate/MONTECH_CENTURY%20II%201200W_1200W_SOCE%207852_Report.pdfRead 14 October 202680 PLUS ID 7852, model CENTURY II 1200W, type ATX 3.0, ATX 3.1, 1200 W, 115V Internal, Gold, test date 2025-06-04. The certificate lists no sample serial. The maker's own page says Platinum, which is the Cybenetics level.
Cybenetics efficiency at 115V
Cybenetics Platinum3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Report 25PS2808A, certification ID 252808, issued May 13, 2025. The database name is Montech Century II Gold 1200 ATX3. The badge is ETA Platinum at 115V, as Hardware Busters also prints. The 80 PLUS certificate says Gold.
Cybenetics efficiency at 230V
Cybenetics Platinum3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026ETA Platinum at 230V (badge image, and Hardware Busters prints Platinum).
Cybenetics noise at 115V
Standard++3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026LAMBDA Standard++ at 115V (badge image). The 115V average of 30.37 dBA is above the A- band of 25-30 dBA. Hardware Busters prints A- (25-30 dB(A)), which matches the 230V result.
Cybenetics noise at 230V
A-3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026LAMBDA A- at 230V (badge image), average 29.44 dBA.

Measured

Average efficiency at 115V (measured)
89.94%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 115V. Sample received Apr 29, 2025, tested May 8, 2025, ambient 28-32 C. The report lists no sample serial.
Average efficiency at 230V (measured)
92.169%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 230V.
Light-load efficiency at 115V (measured)
65.28%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. At 230V it is 74.640%.
Average power factor at 115V (measured)
0.9843Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.957.
Average noise at 115V (measured)
30.37dB(A)3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 115V, ambient 28-32 C, Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 29.44 dBA. The fan ran at 1030 rpm at 10% load in the typical load tests, so the semi-passive mode was not active during them. The report marks semi-passive operation as selectable.
Noise at full load at 115V (measured)
45.1dB(A)3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Typical load tests at 115V, 100% load row: 45.1 dB(A) at 1912 rpm fan speed, ambient about 30 C. At 230V it is 41.5 dB(A) at 1864 rpm.
Standby power with no load at 115V (measured)
0.0521W3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0521 W. At 230V it is 0.0959 W.
Hold-up time (measured)
24ms3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 24.0 ms, AC loss to PWR_OK 19.7 ms, PWR_OK inactive to DC loss 4.3 ms, at maximum continuous load. The report names no input voltage.
12V ripple at full load (measured)
19.68mV3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 19.46 mV.
12V load regulation (measured)
0.46%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.47%.

Cables and connectors

Cables
ConnectorConnectorsCablesLength to first plug (mm)Wire gaugeRated power (W)
ATX 24-pin (20+4)1160018AWGNot available
CPU 8-pin (EPS, 4+4)2270018AWGNot available
PCIe 8-pin (6+2)6360018AWGNot available
12V-2x611600Not available600
SATA power12350018AWGNot available
4-pin Molex4150018AWGNot available
Source1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Cables table: 1 motherboard cable with a 20+4 pin plug (600 mm), 2 CPU cables with one 4+4 pin plug each (700 mm), 3 PCIe cables with two 6+2 pin plugs each (600 mm), 1 12V-2x6 cable (600 mm), 3 SATA cables with 4 plugs each (950 mm to the last plug) and 1 Molex cable with 4 plugs (950 mm to the last plug). The first-plug lengths of the SATA and Molex cables (500 mm) and the gauge come from the Cybenetics report. The report measures the ATX cable at 595 mm, the maker table says 600 mm.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Cables and Connectors table: ATX 20+4 pin 595 mm 18AWG, 2 x 4+4 pin EPS12V 700 mm 18AWG, 3 PCIe cables with 6+2 pin plugs (600 mm then 150 mm), 6 plugs in total, 18AWG, 12+4 pin PCIe 600 mm (600W) 16-26AWG, 3 SATA cables (500 mm plus 3 x 150 mm spacing) with 12 plugs in total 18AWG, 1 Molex cable (500 mm plus 3 x 150 mm) with 4 plugs 18AWG. The 16-26AWG range of the 12V-2x6 cable includes the thin sideband wires, so no gauge is stored for it.
CPU (EPS) connectors
2
PCIe 8-pin connectors
6
16-pin GPU connectors
1
SATA power connectors
12
4-pin Molex connectors
4
Cable style
Flat1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: flat cables and a fully modular design.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Cables page: all cables are flat and consist of black gauges. Review published May 30, 2025.

Fan

Fan size
135mm1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Fan Size 135mm.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: 135mm Fluid Dynamic Bearing Fan.
Fan bearing
Fluid dynamic (FDB)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Bearing FDB.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: 135mm Fluid Dynamic Bearing Fan (HA13525H12F-Z).
Fan mode
Semi-passive1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: 135mm fan with Smart Zero Fan mode.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Semi-Passive Operation checked (selectable).
Fan mode switch
Yes3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Semi-Passive Operation marked selectable.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Product photos page: on the front side, besides the power switch, a smaller switch turns the fan's semi-passive operation on and off.

Protection and parts

Protections
Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: OPP / OVP / UVP / SCP / OCP / OTP. NLO and SIP come from the Cybenetics protection tests.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Protection Features (Manufacturer) lists OPP, +12V OCP, OTP, SCP, surge and inrush current protection. Protection tests tick UVP at 90 V and 80 V and NLO, and SIP shows an MOV for surge and an NTC with bypass relay for inrush. The maker lists OVP, which the report does not test.
All-Japanese capacitors
Yes1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: 100% Japanese capacitors in the power architecture. The Cybenetics parts list also names 6 CapXon and 33 Chemi-Con polymer capacitors. CapXon is not a Japanese maker, so the claim may cover the electrolytic capacitors only.
MTBF (claimed)
Not available

Monitoring and lighting

Software monitoring
Not available
Software
Not available
Built-in power display
Not available
RGB lighting
No6Retailer pagemaxmybuild.com/power-supplies/montech-century-ii-1200wRead 14 October 2026Listing specs: RGB No. The maker page and Hardware Busters describe no lighting.

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Dimensions (L*W*H) 140*150*86mm, so depth 140, width 150, height 86. The page also prints Operating Temperature 0-40 C, which is not stored. Hardware Busters prints 0-50 C for continuous full load.
Weight
1.53kg(3.4 lb)5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: 1.53 kg (3.37 lb). The review does not say whether cables are included. Montech does not publish a weight.

In the box

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In the box
Not available

Warranty

Manufacturer warranty (source market)
10years1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Warranty 10 Years. The page is the global maker page and names no market.

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