GeForce GTX 1660 Mobile vs 840M

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Primary details

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

Place in the ranking795not rated
Place by popularitynot in top-100not in top-100
Power efficiency5.88no data
ArchitectureMaxwell (2014−2017)Turing (2018−2022)
GPU code nameGM108TU116B
Market segmentLaptopLaptop
Release date12 March 2014 (10 years ago)15 May 2019 (5 years ago)
Launch price (MSRP)no data$229

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 cores3841280
Core clock speed1029 MHz1455 MHz
Boost clock speed1124 MHz1590 MHz
Number of transistorsno data6,600 million
Manufacturing process technology28 nm12 nm
Power consumption (TDP)33 Wattno data
Texture fill rate17.98127.2
Floating-point processing power0.8632 TFLOPS4.07 TFLOPS
ROPs848
TMUs1680

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 3.0no data
InterfacePCIe 3.0 x8PCIe 3.0 x16

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 typeDDR3GDDR6
Maximum RAM amount4 GB6 GB
Memory bus width64 Bit192 Bit
Memory clock speed1001 MHz2000 MHz
Memory bandwidth16.02 GB/s384.0 GB/s
Shared memory--

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 outputs1x DVI, 1x HDMI, 3x DisplayPort
HDMI-+

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)12 (12_1)
Shader Model5.16.5
OpenGL4.54.6
OpenCL1.21.2
Vulkan1.1.1261.2.140
CUDA+7.5

Pros & cons summary


Recency 12 March 2014 15 May 2019
Maximum RAM amount 4 GB 6 GB
Chip lithography 28 nm 12 nm

GTX 1660 Mobile has an age advantage of 5 years, a 50% higher maximum VRAM amount, and a 133.3% more advanced lithography process.

We couldn't decide between GeForce 840M and GeForce GTX 1660 Mobile. We've got no test results to judge.


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 840M
GeForce 840M
NVIDIA GeForce GTX 1660 Mobile
GeForce GTX 1660 Mobile

Comparisons with similar GPUs

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Community ratings

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


3.4 938 votes

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2.7 143 votes

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Questions & comments

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