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Thermaltake · 850 W · ATX

Thermaltake Smart BM3 850W 80Plus Bronze ATX 3.0 & PCIE 5.0

ATX 3.0 · 80 PLUS Bronze · Modular

Capability
61
Cap / price
70
Wattage value
77
Amazon
$88
$88
Available on Amazon Updated Aug 30, 2026 Prime FBA
Capability61.2
Capability / price69.6
Wattage value77.3
$88 on Amazon PSU table Compare this PSU

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Written analysis

Thermaltake Smart BM3 850W 80Plus Bronze ATX 3.0 & PCIE 5.0 at a glance

The Thermaltake Smart BM3 850W 80Plus Bronze ATX 3.0 & PCIE 5.0 is a 850 W ATX power supply built to the ATX 3.0 generation. Efficiency is listed as 80 PLUS Bronze. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 61.2, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 5 years. +12V output is 71 A.

Best fit: Performance desktops whose calculated component load fits comfortably within a 750–999 W supply.

Platform and cooling

Dimensions are listed as 150mm(W)x86mm(H)x140mm(D). Cooling fan size is 120 mm. The unit uses 1 +12V rail at up to 71.00 A per rail. Certifications include 80 PLUS® Bronze.

Current value

At $88, price per kilowatt is $103.52. Capability / price is 69.6 and wattage value is 77.3. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer
Thermaltake
PSU
Thermaltake Smart BM3 850W 80Plus Bronze ATX 3.0 & PCIE 5.0
Model
PS-SPD-0850MNFABU-3
Launch price
Amazon price
$88
Amazon availability
Available
Price updated
Aug 30, 2026

Power & efficiency

Wattage
850 W
Efficiency
80 PLUS Bronze
Recorded efficiency
85%
Warranty
5 years

Value

Amazon price
$88
Price / kW
$103.52
Capability
61.2
Capability / price
69.6
Wattage value
77.3

Platform & size

ATX generation
3.0
Form factor
ATX
Dimensions
150mm(W)x86mm(H)x140mm(D)
Modular
Yes
Fanless
No

Electrical

Input voltage
100-240
+12V output
71 A
+5V output
18 A
+3.3V output
18 A
+12V rails
1
Max amps / rail
71.00 A

Cooling & build

Fan size
120 mm
Fan stop
Yes
Certifications
80 PLUS® Bronze

Additional information

Also listed as
Smart BM3 850W 80Plus

Amazon

Price history

Nearby capability

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

80Plus Bronze certified and fully compatible with Intel ATX 3.0 standards to power up next generation hardware

PCIe Gen. 5 compliant

High quality Japanese 105°C/221°F main capacitor

120mm fluid dynamic bearing fan with Smart Zero Fan function

Built-in Industrial Grade Protection