NVIDIA GeForce 840M vs Intel HD Graphics 620

NVIDIA GeForce 840M
Intel HD Graphics 620

General info

Comparison of GeForce 840M and HD Graphics 620 architecture, market type and release date.
Place in performance rating
Gen. 9.5 Kaby Lake
Code name
Kaby-Lake GT2
Release date
12 March 2014
30 August 2016

Technical specs

GeForce 840M and HD Graphics 620's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce 840M and HD Graphics 620's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Core clock speed
1029 MHz
300 MHz
Boost Clock
no data
1050 MHz
Transistor count
no data
189 million
Manufacturing process technology
28 nm
14 nm
Power consumption (TDP)
33 Watt
15 Watt
Texture fill rate
17.98 GTexel / s
25.2 GTexel / s
Floating-point performance
863.2 gflops
403.2 gflops

Compatibility, dimensions and requirements

Information on GeForce 840M and HD Graphics 620 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
Laptop size
medium sized
no data
Bus support
PCI Express 2.0, PCI Express 3.0
no data
PCIe 3.0 x8
PCIe 3.0 x1


Parameters of memory installed on GeForce 840M and HD Graphics 620: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
Maximum RAM amount
4 GB
32 GB
Memory bus width
64 Bit
64 / 128 Bit
Memory clock speed
2000 MHz
no data
Memory bandwidth
16.02 GB / s
no data
Shared memory

Video outputs and ports

Types and number of video connectors present on GeForce 840M and HD Graphics 620.
Display Connectors
No outputs
No outputs


Technological solutions and APIs supported by GeForce 840M and HD Graphics 620. You'll probably need this information if you need some particular technology for your purposes.
GPU Boost
no data
GeForce Experience
no data
Quick Sync
no data

API support

APIs supported by GeForce 840M and HD Graphics 620, sometimes including their particular versions.
DirectX 12 (FL 11_0), Shader 5.0
DirectX 12 (FL 12_1)

Benchmark performance

Non-gaming benchmarks performance of GeForce 840M and HD Graphics 620. Note that overall benchmark performance is measured in points in 0-100 range.

Overall benchmark performance

GeForce 840M 1.15 +42%
HD Graphics 620 0.81

3DMark Ice Storm GPU

GeForce 840M 119888 +51.6%
HD Graphics 620 79067

3DMark Cloud Gate GPU

GeForce 840M 8724 +12.9%
HD Graphics 620 7725

3DMark Fire Strike Score

GeForce 840M 1361 +58.6%
HD Graphics 620 858

3DMark Fire Strike Graphics

GeForce 840M 1573 +68.4%
HD Graphics 620 934

3DMark 11 Performance GPU

GeForce 840M 2338 +54.9%
HD Graphics 620 1509

3DMark Vantage Performance

GeForce 840M 7191 +23.9%
HD Graphics 620 5803


GeForce 840M 1037 +10.9%
HD Graphics 620 935

Mining hashrates

Cryptocurrency mining performance of GeForce 840M and HD Graphics 620. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
92 Mh/s
no data

Gaming performance

Let's see how good GeForce 840M and HD Graphics 620 are for gaming. Particular gaming benchmark results are measured in FPS.

Advantages of NVIDIA GeForce 840M

42% faster in synthetic tests
More pipelines (384 vs 24)
GPU Boost 2.0 (increases NVIDIA GPU voltage and frequency when there's a temperature headroom. Similar to AMD PowerTune)
Optimus (lowers energy usage by automatically switching between integrated and discrete NVIDIA GPU. Similar to AMD Enduro)
PhysX (hardware acceleration of physical simulation engine named PhysX)
CUDA (Compute Unified Device Architecture - an API for video card computing power usage in tasks different from 3D graphics processing. Can be used for physics simulation for instance)
GeForce Experience (software suite built to manage NVIDIA GPU parameters, and to record and stream game video)
Optimus Support

Advantages of Intel HD Graphics 620

Much newer (30 August 2016 vs 12 March 2014)
Finer manufacturing process technology (14 vs 28 nm)
Less power hungry (15 vs 33 watts)
Quick Sync (hardware acceleration of video encoding and decoding for Intel CPUs. Speeds up video encoding by times, but at the cost of somewhat lower quality)

So, 840M or HD Graphics 620?

Judging by the results of synthetic and gaming tests, Technical City recommends NVIDIA GeForce 840M.
Should you still have questions on choice between GeForce 840M and HD Graphics 620, ask them in Comments section, and we shall answer.

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NVIDIA GeForce 840M
Intel HD Graphics 620

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