Quadro4 400 NVS PCI vs GeForce 940A

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Primary details

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

Place in the ranking788not rated
Place by popularitynot in top-100not in top-100
Power efficiency5.96no data
ArchitectureMaxwell (2014−2017)Celsius (1999−2005)
GPU code nameGM108NV17 A3
Market segmentLaptopWorkstation
Release date13 March 2015 (9 years ago)16 July 2004 (20 years ago)

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 cores384no data
Core clock speed1029 MHz220 MHz
Boost clock speed1124 MHzno data
Number of transistorsno data29 million
Manufacturing process technology28 nm150 nm
Power consumption (TDP)33 Watt18 Watt
Texture fill rate17.980.88
Floating-point processing power0.8632 TFLOPSno data
ROPs82
TMUs164

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).

InterfacePCIe 3.0 x8PCI
Widthno data1-slot
Supplementary power connectorsno dataNone

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 typeDDR3DDR
Maximum RAM amount1 GB64 MB
Memory bus width64 Bit128 Bit
Memory clock speed1001 MHz166 MHz
Memory bandwidth16.02 GB/s5.312 GB/s

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 outputs2x LFH60

API compatibility

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

DirectX12 (11_0)8.0
Shader Model5.1no data
OpenGL4.61.3
OpenCL1.2N/A
Vulkan1.1.126N/A
CUDA5.0-

Pros & cons summary


Recency 13 March 2015 16 July 2004
Maximum RAM amount 1 GB 64 MB
Chip lithography 28 nm 150 nm
Power consumption (TDP) 33 Watt 18 Watt

GeForce 940A has an age advantage of 10 years, a 1500% higher maximum VRAM amount, and a 435.7% more advanced lithography process.

Quadro4 400 NVS PCI, on the other hand, has 83.3% lower power consumption.

We couldn't decide between GeForce 940A and Quadro4 400 NVS PCI. We've got no test results to judge.

Be aware that GeForce 940A is a notebook card while Quadro4 400 NVS PCI is a workstation one.


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

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NVIDIA GeForce 940A
GeForce 940A
NVIDIA Quadro4 400 NVS PCI
Quadro4 400 NVS PCI

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