GeForce 840A

Reference GPU
MaxwellGeForce 800ADesktopDesktopDDR32014NVIDIA
Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
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At a Glance

Entry Type
Reference GPU
Architecture
Maxwell
Series
GeForce 800A
GPU Die
GM108
Launch Date
2014-03-17
CUDA Cores
384
TMUs
16
ROPs
8
Memory
2 GB DDR3
Bus Width
64-bit
TDP/TBP
33 W
Interface
PCIe 3.0 x8
Data Confidence
Partial

Overview

GeForce 840A is an NVIDIA GPU entry in the GeForce 800A family. It is listed with Maxwell architecture and GM108 silicon.

Key reference data: 384 CUDA cores/shaders, 2 GB DDR3 memory, 64-bit memory bus, 33 W board power class.

Board-partner cards can vary in cooler, PCB, display outputs, clocks, BIOS behavior, and power connector layout.

Why It Mattered

GeForce 840A belongs to the Maxwell and GeForce 800A era around 2014, when PC graphics cards varied heavily by bus, memory chips, BIOS, cooler, and display outputs. Tracking the exact model helps retro builders distinguish period-correct boards from similarly named variants.

Collector Notes

For archival use, record the board vendor, PCB revision, bus type, memory chips and capacity, BIOS version, cooler or fan, display outputs, TV-out or DVI adapter cables, and photos of both sides of the card.

Used-Market Caution

Before buying used, confirm PCI or AGP voltage compatibility, required legacy driver and OS support, visible capacitor damage, fan noise, memory artifacts, missing breakout cables, and whether the card has been tested in period-correct hardware.

Known Issues

Known issues pending source review.

Related GPUs

Back to GeForce 800A

Previous in series: GeForce 830ANext in series: GeForce GTX 850A
SourcesPartial

Sources reviewed: 2026-06-20

This entry is still being source-checked.

Specifications are currently based on reference/spec-dump sources. Historical notes require additional source review.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

  • Verified: core specifications and historical notes have been reviewed against listed sources.
  • Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
  • Imported: spec-only imported entry pending editorial source review.
  • Needs source review: narrative notes are incomplete until reviewed.

Independent reference sources

  1. TechPowerUp GPU SpecsModel-level specification reference for this GPU entryOpen source

Derived datasets and spec dumps

  1. RightNow GPU DatabaseOpen data inventory used for bulk normalization and cross-checking Derived/spec-dump source. Treat as a reference dataset, not independent historical verification.Open source

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