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Montech

Montech GAMMA 3 Spec and Price in the United States

80 Plus Gold850WATX

GAMMA 3 is Montech's mainstream gold line, a tier below the platinum TITAN PLA: 80 PLUS Gold with a stated 91.9% average efficiency, ATX 3.1 and PCIe 5.1, and a native 12V-2x6 cable so a current graphics card needs no adapter. The chassis is only 140mm deep — easy to fit under a mid-tower shroud — and one 135mm sleeve-bearing fan cools all three wattages, 650W, 750W and 850W. Montech covers it for five years and excludes mining from that.

Current best price
From $42.90at Newegg · captured 2026-09-15View at Newegg

Captured periodically and may have changed.

Price history

30D90D180DAll
  • 650W
  • 750W
July 22, 202640 capturestoday · $89.90

Each point is one capture, not a list price. How we track prices

Specifications

Wattage
Efficiency
80 Plus Gold
Form factor
ATX
ATX version
3.1
Fan size
135 mm
Length
140 mm
12V-2x6 connectors
1
PCIe 8-pin
4
SATA connectors
6
Warranty
5 years

Wattages

ConfigurationPart numberFan sizeLengthCurrent best price
650W—135 mm140 mm
$42.90

at Newegg · captured 2026-09-15

750W———
$89.90

at Amazon.com · captured 2026-09-15

850W—135 mm140 mm—

Guides for this category

How much power supply you actually needHow to size a PSU from what the build really draws, why headroom buys efficiency and quiet rather than safety alone, and what 80 Plus does and does not promise.

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.