G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Overview

The GeForce 840M is manufactured by NVIDIA. It was released in March 12 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,100 points.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
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Performance Per Dollar

Based on actual market prices and performance benchmarks.

FPS Benchmarks

Predicted performance for GeForce 840M across popular games. Tested paired with Ryzen 7 7800X3D to isolate GPU performance.

Technical Analysis

Detailed breakdown of GeForce 840M specifications and capabilities.

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Graphics Performance

The GeForce 840M scores 1,100 in the G3D Mark benchmark (the standard measure of rasterization GPU performance), placing it in the Entry Level tier as a Legacy generation graphics card. It is built on the Maxwell (2014−2017) architecture (codename: GM108), manufactured on a 28 nm process— smaller process nodes improve power efficiency and transistor density. It packs 384 shader units (the primary compute units for rendering pixels), 16 TMUs (texture mapping units), and 8 ROPs (render output units that handle final pixel output). Raw FP32 compute power: 0.8632 TFLOPS — this measures the theoretical peak floating-point performance. Boost clock reaches 1124 MHz from a base of 1029 MHz.

Specification	GeForce 840M
G3D MarkPassMark 3D graphics benchmark score	1,100
ArchitectureGPU microarchitecture generation	Maxwell (2014−2017)
CodenameInternal GPU die codename	GM108
Manufacturing ProcessFabrication node — smaller = more efficient	28 nm
Shader UnitsCore compute units for rendering/compute	384
TMUsTexture Mapping Units — handle texture sampling	16
ROPsRender Output Units — final pixel/color blending	8
Boost ClockMaximum GPU frequency under load	1124 MHz
Base ClockGuaranteed minimum GPU frequency	1029 MHz
Compute (FP32)Peak single-precision floating-point performance	0.8632 TFLOPS
Texture Fill RateTextures processed per second	17.98 GTexel/s
PCIe InterfaceCPU↔GPU data link generation	PCIe 3.0 x16
Performance RankPosition in global GPU performance ranking	#854

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Video Memory (VRAM)

The GeForce 840M is equipped with 2 GB of GDDR5 video memory connected via a 128-bit memory bus, delivering Unknown of bandwidth. Memory operates at 8 Gbps effective speed.

Specification	GeForce 840M
VRAM SizeVideo memory capacity — more = better for high-res textures	2 GB
VRAM TypeMemory technology generation	GDDR5
Memory BusWidth of data path — wider = more bandwidth	128-bit
Memory SpeedEffective memory data rate	8 Gbps
BandwidthMaximum data throughput between GPU and VRAM	Unknown
L1 Cache	192 kB
L2 Cache	1024 kB

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Advanced Features & APIs

Graphics API support: DirectX 11.0, Vulkan 1.2, OpenGL 4.5— latest API versions enable the most advanced rendering features like ray tracing and mesh shaders.

Specification	GeForce 840M
NVIDIA Reflex	❌ Not Supported
DLSS Frame Generation	❌ Not Supported
DLSS Super Resolution	❌ Not Supported
DirectXMicrosoft graphics API version	11.0
VulkanCross-platform graphics API	1.2
OpenGLLegacy graphics API	4.5
Compute APIGPGPU framework (CUDA/ROCm/OpenCL)	CUDA 5.0
Multi-GPUSLI/CrossFire/NVLink support	Optimus

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Display & Media

Display outputs: 1x Internal — supports up to 1 simultaneous displays. Hardware encoder: NVENC 2.0, decoder: PureVideo HD VP6— dedicated hardware for video encoding/decoding accelerates streaming, recording, and video playback. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265.

Specification	GeForce 840M
Internal PortsNumber of Internal display connectors	1x
Max DisplaysMaximum simultaneously connected monitors	1
Hardware EncoderVideo encoding engine version	NVENC 2.0
Hardware DecoderVideo decoding engine version	PureVideo HD VP6
CodecsSupported video compression formats	MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265

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Power & Dimensions

The GeForce 840M draws 33 Watt under load (TDP) — a 350W PSU minimum is recommended. Power connector: Legacy. Physical size: 0mm long, 0mm tall, occupying 0 expansion slots— verify your case has clearance before purchasing. Typical temperatures: 45°C at idle, 75°C under load.

Specification	GeForce 840M
TDPPower consumption under load	33 Watt
Recommended PSUMinimum power supply wattage	350W
Power ConnectorRequired PCIe power cable type	Legacy
Card LengthGPU card length — check case clearance	0mm
Card Height	0mm
Slot WidthExpansion slots occupied	0-slot
Idle TemperatureTypical temperature at desktop idle	45°C
Load TemperatureTypical temperature under gaming load	75°C

Specifications Reference

Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.

2 categories

Technical Specifications

18 specs

ROPs	8
TMUs	16
Vram	2 GB
L1 Cache	192 kB
L2 Cache	1024 kB
Core Clock	1029 MHz
Boost Clock	1124 MHz
Memory Type	GDDR5
Memory Speed	8 Gbps
Shading Units	384
PCIe Generation	PCIe 3.0 x16
Memory Bandwidth	Unknown
Memory Bus Width	128-bit
Frame Generation	NVIDIA Reflex: No \| DLSS Frame Generation: No \| DLSS Super Resolution: No
Texture Fill Rate	17.98
Manufacturing Process	28 nm
Power Consumption (TDP)	33 Watt
Floating Point Performance	0.8632 TFLOPS