GeForce 9400 GT vs 840M

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking787not rated
Place by popularitynot in top-100not in top-100
Power efficiency6.13no data
ArchitectureMaxwell (2014−2017)Tesla (2006−2010)
GPU code nameGM108G96C
Market segmentLaptopDesktop
Release date12 March 2014 (10 years ago)27 August 2008 (16 years ago)
Launch price (MSRP)no data$79.99

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores38416
Core clock speed1029 MHz550 MHz
Boost clock speed1124 MHzno data
Number of transistorsno data314 million
Manufacturing process technology28 nm55 nm
Power consumption (TDP)33 Watt50 Watt
Maximum GPU temperatureno data105 °C
Texture fill rate17.984.400
Floating-point processing power0.8632 TFLOPS0.0448 TFLOPS
ROPs84
TMUs168

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop sizemedium sizedno data
Bus supportPCI Express 2.0, PCI Express 3.0PCI-E 2.0
InterfacePCIe 3.0 x8PCIe 2.0 x16
Lengthno data168 mm
Heightno data4.376" (11.1 cm)
Widthno data1-slot
Supplementary power connectorsno dataNone
SLI options-+

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeDDR3DDR2
Maximum RAM amount4 GB512 MB
Memory bus width64 Bit128 Bit
Memory clock speed1001 MHz400 MHz
Memory bandwidth16.02 GB/s12.8 GB/s
Shared memory-no data

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsDual Link DVI
Multi monitor supportno data+
HDMI-+
Maximum VGA resolutionno data2048x1536
Audio input for HDMIno dataS/PDIF

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

GPU Boost2.0no data
Optimus+-
GameWorks+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)11.1 (10_0)
Shader Model5.14.0
OpenGL4.52.1
OpenCL1.21.1
Vulkan1.1.126N/A
CUDA++

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.



Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GeForce 840M 1091
+569%
9400 GT 163

Pros & cons summary


Recency 12 March 2014 27 August 2008
Maximum RAM amount 4 GB 512 MB
Chip lithography 28 nm 55 nm
Power consumption (TDP) 33 Watt 50 Watt

GeForce 840M has an age advantage of 5 years, a 700% higher maximum VRAM amount, a 96.4% more advanced lithography process, and 51.5% lower power consumption.

We couldn't decide between GeForce 840M and GeForce 9400 GT. We've got no test results to judge.

Be aware that GeForce 840M is a notebook card while GeForce 9400 GT is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

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NVIDIA GeForce 840M
GeForce 840M
NVIDIA GeForce 9400 GT
GeForce 9400 GT

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.4 914 votes

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3.2 490 votes

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Questions & comments

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