NVIDIA GeForce 840M vs Intel HD Graphics 620
Comparison of GeForce 840M and HD Graphics 620 architecture, market type and release date.
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
Manufacturing process technology
Power consumption (TDP)
Texture fill rate
17.98 GTexel / s
25.2 GTexel / s
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.
PCI Express 2.0, PCI Express 3.0
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.
DDR3L / LPDDR3 / LPDDR4
Maximum RAM amount
Memory bus width
64 / 128 Bit
Memory clock speed
16.02 GB / s
Video outputs and ports
Types and number of video connectors present on GeForce 840M and HD Graphics 620.
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.
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)
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
Cryptocurrency mining performance of GeForce 840M and HD Graphics 620. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
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)
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.