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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

  • TypeATX 12V 2.3 & SSI EPS 12V 2.92
  • Maximum Power1275 W
  • Fans1
  • PFCActive
  • Main Connector24Pin
  • +12V Rails2
  • 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.

Highlights

  • 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

Specifications

BrandThermaltake
SeriesToughpower XT
ModelTPX-1275M
TypeATX 12V 2.3 & SSI EPS 12V 2.92
Maximum Power1275 W
Fans1
PFCActive
Main Connector24Pin
+12V Rails2
PCI-Express Connector6 x 6+2-Pin, 2 x 8-Pin
SATA Power Connector16
SLISLI Ready
Haswell SupportYes
CrossFireCrossFire Ready
ModularModular
Power Good Signal100-500ms
Hold-up Time16msec (minimum) @ 70% of full load at 115Vac input
Efficiency> 85%
Energy-Efficient80 PLUS PLATINUM Certified
Over Voltage ProtectionYes
Input Voltage100 V / 240 V
Input Frequency Range47 - 63 Hz
Input Current115Vac / 13A max
Output+3.3V@25A, +5V@25A, +12V1@45A, +12V2@65A, [email protected] , +5VSB@4A
MTBF>120,000 Hours
ApprovalsCE, TUV, FCC, UL, CUL, GOST and BSMI
Connectors1 x 24pin Main connector
1 x EPS / ATX 12V 4+4pin connector
1 x EPS 12V 8pin connectors
6 x Peripheral connectors & 1 x 4pin FDD connector
16 x S-ATA connectors
6 x 6+2pin PCI-E connector
2 x 8pin PCI-E connectors
Features80 PLUS Platinum certified – extreme efficiency PSU series with 89-94% efficiency @ 20-100% load to cut down electric cost.
24/7 @ 50°C: Guaranteed to deliver 1275W continuous power even in the worst chassis conditions up to 50? internal chassis temperature.
S.P.T. Indicator: PSU status monitor with 3-mode LED (standby / PG signal / temperature) will let you know if there's a problem before it becomes a bigger problem or even ceases function.
High quality 105°C Japanese capacitors: ensure superb performance and reliability.
105°C Solid state capacitors: great stability at higher oper
Dimensions3.39" x 5.91" x 7.87"
Weight4.0 lbs.
Shipping weight4.88 kg
Package size391 × 221 × 152 mm

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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