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Thermaltake Smart BX3 Pro SE 850W ATX 3.1 PC Power Supply 80 PLUS Bronze PCIe 5.1 12V-2x6 Black

Brand:
Thermaltake
Thermaltake Smart BX3 Pro SE 850W ATX 3.1 PSU
Thermaltake Smart BX3 Pro SE 850W ATX 3.1 PC Power Supply 80 PLUS Bronze PCIe 5.1 12V-2x6 Black
€113.19 inc. VAT
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PS-SPD-0850NNSABE-7
€95.12 €105.69
€113.19 inc. VAT
Ships from EU stock: 1 item(s)
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Product Code
04:597004
EAN Code
4711658548788
Manufacturer
Thermaltake

Quick Specs

Type
ATX 3.1 PSU, 850W, 80 PLUS Bronze
Connectors
24-pin · 2× EPS 4+4 · 3× PCIe 6+2 · 12V-2x6
Key spec
Single +12V rail 70.8A / 850W
Compatibility
ATX cases · 200–240V AC input
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Thermaltake Smart BX3 Pro SE 850W — ATX 3.1 Bronze PSU with native 12V-2x6

850W ATX 3.180 PLUS Bronze12V-2x6 600W5-year warranty

The Thermaltake Smart BX3 Pro SE 850W (SPS-0850AH2NLB-3) is an Intel ATX 3.1 power supply rated at 850W continuous with 80 PLUS Bronze efficiency, aimed at gaming and workstation builds that use a current PCIe 5.x graphics card with a 12V-2x6 (12+4-pin) power connector.

It delivers its full 850W on a single +12V rail (70.8A) with DC-to-DC conversion for the 3.3V and 5V outputs, uses low-profile flat black cables and a 120mm fluid-dynamic-bearing fan, and carries the usual protection set: OCP, OVP, UVP, OPP, OTP and SCP. Efficiency is up to 85% at 230V.

Before you order: Input is 200–240V AC only, which suits Cyprus and EU mains. It is not a wide-range 100–240V unit, so it is not suitable for 110–120V mains.

What's in the Box

  • Smart BX3 Pro SE 850W power supply
  • AC power cord
  • 4 mounting screws
  • User manual

What It Means in Practice

  • A single native 12V-2x6 cable powers an RTX 40/50-series or similar GPU directly, without the four-plug adapter.
  • The 70.8A single rail means all +12V capacity is available to the GPU and CPU without rail-balancing.
  • Flat cables are easier to route behind the motherboard tray in compact ATX cases.
  • Thermaltake documents a Smart Zero Fan mode, so the fan only starts above a set temperature at light load.

What Will Not Work

  • It will not run on 110–120V mains (input is 200–240V only).
  • Modular cabling is not clearly published — plan the build assuming cables cannot be removed.
  • With 3 PCIe 6+2 plus one 12V-2x6, it cannot feed two high-end GPUs.
  • It is a standard ATX unit and will not fit SFX-only small-form-factor cases.

Key Features

 
ATX 3.1 ready
Designed to Intel ATX 3.1 transient-load requirements of modern graphics cards.
 
Native 12V-2x6
One 600W 12+4-pin cable for PCIe 5.1 GPUs.
 
DC-to-DC design
3.3V and 5V derived from the +12V rail for steadier regulation.
 
Quiet 120mm FDB fan
Fluid-dynamic bearing for longer life and lower noise.

Technical Specifications

Identification
Part Number PS-SPD-0850NNSABE-7
EAN / GTIN 4711658548788
Model SPS-0850AH2NLB-3
Brand Thermaltake
Electrical
Continuous power 850W
+12V 70.8A single rail (850W)
+3.3V / +5V 18A / 18A (110W combined)
−12V / +5VSB 0.3A / 3A
AC input 200–240V AC, 8A, 50/60Hz
PFC Active
Efficiency 80 PLUS Bronze (up to 85%)
Hold-up time >17ms at 80% load
Protections OCP, OVP, UVP, OPP, OTP, SCP
MTBF 100,000 hours
Main capacitor 105°C
Connectors
ATX 24-pin 1 (600mm)
EPS 4+4-pin 2 (650+150mm)
PCIe 6+2-pin 3
12V-2x6 (12+4-pin) 1 × 600W (600mm)
SATA 4
Molex 4-pin 4
Cable type Low-profile flat, black
Physical
Form factor ATX
Fan 120mm fluid dynamic bearing
Dimensions 150 × 86 × 140 mm
Operating temperature 5–45°C
Colour Black
Warranty
Warranty 1-Year Warranty (Singular)
Manufacturer Term 5 years from Thermaltake — claims handled through Singular

Frequently Asked Questions

Do I need an adapter for an RTX 4070/4080/5070?
No. The 12V-2x6 cable connects directly to cards with a 12VHPWR or 12V-2x6 socket.
Is it fully modular?
Thermaltake does not clearly publish modularity for this model, so treat the cables as fixed when planning cable management.
Bronze vs Gold — does it matter?
Bronze wastes slightly more energy as heat at the same load. For a gaming PC used a few hours a day the cost difference is small; for 24/7 machines Gold or better pays back faster.
Singular Expert Insight · Buyer's Guide
A sensible value pick for a modern GPU build: native 12V-2x6, ATX 3.1 and a 5-year warranty at Bronze pricing. If you want quieter running and modular cables, step up to a Gold unit from our PC power supplies range.
✓ Buy it if you are building or upgrading a gaming PC around a PCIe 5.x graphics card and want a straightforward ATX 3.1 unit.
✕ Skip it if you need modular cables, a small SFX unit or 110V support.
→ Also consider a fully modular 80 PLUS Gold 850W unit for quieter, tidier builds.
Not sure 850W is enough? Send us your CPU and graphics card model and we will size the PSU before you order.

Features - Thermaltake - PS-SPD-0850NNSABE-7

More Details
Product Code
04:597004
EAN Code
4711658548788
Manufacturer
Thermaltake
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