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Rectangular black modular ATX power supply with single fan and cable connectors

Thermaltake

Thermaltake TPX-1275M 1275 W power supply

SKU CH-3ZDZ-4FQWF MPN TPX-1275M

Modular 1275 W ATX power supply with 80 PLUS Platinum efficiency, dual +12 V rails up to 45 A and 65 A, 16 SATA connectors and eight PCIe connectors

  • Max wattage1275 W
  • Power efficiency> 85%
  • Modular cablingModular
  • Fan configuration1
  • Power factor correctionActive
  • Main power connector24Pin
  • Delivers 1275 W continuous power at up to 50 °C internal temperature
  • 80 PLUS Platinum certified for 89–94 % efficiency across 20–100 % load
  • Fully modular cabling keeps the build tidy and airflow clear
  • Dual +12 V rails supply 45 A and 65 A for high-current stability
  • S.P.T. indicator shows standby, power-good and temperature status at a glance

Power for multi-GPU workstations

The Thermaltake Toughpower XT TPX-1275M is a 1275 W ATX power supply built for systems that draw sustained high current. Its modular cable design lets you connect only the leads a dense build requires. The unit meets ATX 12V 2.3 and SSI EPS 12V 2.92 specifications for modern platform compatibility.

80 PLUS Platinum efficiency

Certification confirms 89 to 94 percent efficiency across 20 to 100 percent load, reducing waste heat and operating cost. Active PFC and a full-bridge LLC resonant topology with DC-DC modules keep voltage regulation tight. Japanese capacitors rated at 105 °C support long-term electrical stability.

Continuous output at 50 °C

The supply is rated to deliver the full 1275 W continuously with an internal chassis temperature of 50 °C. Hold-up time is at least 16 ms at 70 percent load on 115 V input. Smart fan control adjusts speed to thermal load while the S.P.T. indicator reports standby, power-good and temperature status.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $195.99
Pricier than about 62% of the 10,869 comparable items (median $142.99).
Max wattage 1275 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameThermaltake
Product lineToughpower XT
Model nameTPX-1275M
Product typeATX 12 V 2.3 & SSI EPS 12 V 2.92
Graphics
SLI supportReady
CrossFire supportReady
Ports & slots
PCIe power connectors6 × 6+2-Pin, 2 × 8-Pin
SATA power connectors16
Output type+3.3 V@25A, +5 V@25A, +12V1@45A, +12V2@65A, +5VSB@4A
Power
Max wattage1275 W
Power efficiency> 85%
Modular cablingModular
Power factor correctionActive
Main power connector24Pin
12V rails2
Power good signal100-500 ms
Power hold-up time16msec (minimum) @ 70% of full load at 115Vac input
Efficiency certification80 PLUS PLATINUM Certified
Overvoltage protectionYes
Supply voltage100 V / 240 V
AC input frequency47–63 Hz
Rated input current115Vac / 13A max
Size & build
Product dimensions3.39 in × 5.91 in × 7.87 in
Product weight4.0 lb (1.81 kg)
Shipping weight4.88 kg
Package size391 × 221 × 152 mm
Compatibility
Haswell compatibilityYes
Environment & compliance
Regulatory approvalsCE, TUV, FCC, UL, CUL, GOST and BSMI
More details
Fan configuration1
Mean time between failures>120,000 h

Questions about this item

Will the modular cables fit a standard ATX 24-pin motherboard and two EPS 8-pin CPU sockets?

Yes, the unit includes a 24-pin main connector and two 8-pin PCI-Express cables that serve as EPS 12V CPU power, matching ATX 12V 2.3 and SSI EPS 12V 2.92 layouts.

How many graphics cards can I power with the native PCIe connectors?

Six 6+2-pin and two 8-pin PCIe cables are supplied, enough for up to four high-end GPUs in SLI or CrossFire configurations.

What continuous output can I expect at 50 °C case temperature?

The supply is rated for 1275 W continuous at up to 50 °C internal chassis temperature, with dual +12 V rails delivering 45 A and 65 A respectively.

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