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Gaming Performance Comparison

Recommended System Requirements
Game Iris Graphics 550 Mobile GeForce 840M 2GB
Cyberpunk 2077 600% 559%
Assassins Creed: Valhalla 546% 508%
Genshin Impact 606% 565%
FIFA 21 256% 235%
Watch Dogs Legion 581% 541%
eFootball PES 2021 256% 235%
Call of Duty: Black Ops Cold War 619% 576%
Microsoft Flight Simulator 525% 488%
Marvel's Avengers 569% 529%
Mafia: Definitive Edition 913% 853%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 840M 2GB are very slightly better than the Intel Iris Graphics 550 Mobile.

The GeForce 840M 2GB has a 729 MHz higher core clock speed and 16 more Texture Mapping Units than the Graphics 550. This results in the GeForce 840M 2GB providing 22.3 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce 840M 2GB has a 729 MHz higher core clock speed and 6 more Render Output Units than the Graphics 550. This results in the GeForce 840M 2GB providing 7.6 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The Graphics 550 was released over a year more recently than the GeForce 840M 2GB, and so the Graphics 550 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce 840M 2GB.

The GeForce 840M 2GB has 1984 MB more video memory than the Graphics 550, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the Graphics 550 has superior memory performance.

The Graphics 550 has 18.1 GB/sec greater memory bandwidth than the GeForce 840M 2GB, which means that the memory performance of the Graphics 550 is slightly better than the GeForce 840M 2GB.

The Iris Graphics 550 Mobile has 48 Shader Processing Units and the GeForce 840M 2GB has 384. However, the actual shader performance of the Graphics 550 is 422 and the actual shader performance of the GeForce 840M 2GB is 583. The GeForce 840M 2GB having 161 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 840M 2GB delivers a marginally smoother and more efficient experience when processing graphical data than the Graphics 550.

The Graphics 550 transistor size technology is 14 nm (nanometers) smaller than the GeForce 840M 2GB. This means that the Graphics 550 is expected to run slightly cooler and achieve higher clock frequencies than the GeForce 840M 2GB. While they exhibit similar graphical performance, the Graphics 550 should consume less power than the GeForce 840M 2GB.

The Iris Graphics 550 Mobile requires 28 Watts to run and the GeForce 840M 2GB requires 33 Watts. The GeForce 840M 2GB requires 5 Watts more than the Graphics 550 to run. The difference is not significant enough for the GeForce 840M 2GB to have a noticeably larger impact on your yearly electricity bills than the Graphics 550.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed300 MHzvs1029 MHz
Boost Clock1100 MHzvs1124 MHz
ArchitectureSkylake GT3-EMaxwell GM108
OC Potential None vs Poor
Driver Support Great vs Great
Release Date01 Sep 2015vs12 Mar 2014
GPU LinkGD LinkGD Link

Resolution Performance

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green tick vs

GPU Memory

MemoryN/Avs2048 MB
Memory Speed1067 MHzvs1001 MHz
Memory Bus128 Bitvs64 Bit
Memory TypeDDR4vsDDR3
Memory Bandwidth34.1GB/secvs16GB/sec
L2 Cache 512 KB vs green tick 1024 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units48vs384
Actual Shader Performance20%vs28%
Texture Mapping Units8vs24
Texture Rate2.4 GTexel/svs24.7 GTexel/s
Render Output Units2vs8
Pixel Rate0.6 GPixel/svs8.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2304vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections0vs-

GPU Power Requirements

Max Power28 Wattsvs33 Watts
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-6650U 2-Core 2.2GHzvsIntel Core i3-4100M 2.5GHz
Recommended RAM4 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Intel Iris Graphics 550 Mobile are Integrated Graphics in some of Intel's Skylake Mobile Processors.

The Skylake Architecture succeeds the Broadwell Architecture and aims for increased CPU and Graphics Performance, within the same Power Requirements. It includes support for DirectX 12.1, OpenCL 2.0 and OpenGL 4.4, as well as DDR4 Memory Support.
The GPU Codenamed GT3-E offers 48 Shader Processing Units, 8 TMUs and 2 ROPs.

The Central Unit Initially Runs at 350MHz and goes up to 1050MHz, in Turbo Mode.

Memory: Speed
The Operating Memory Clock depends at which speed the System's RAM is running and which Memory Type is installed and is ultimately limited by the highest operating speed that the Processor supports. In this case, it is 933MHz for DDR3 and 1067MHz for DDR4.
Depending on whether or not the System's RAM is Dual-Channeled, it can access either a 64-bit or 128-bit Memory Interface.
An addition to the Iris Graphics is the access to a L4 Cache of 64MB eDRAM which further increases the Memory Performance.

Memory: Frame Buffer
The GPU Shares the System's RAM which varies according to the System. The GPU may reserve up to 1.7GB.

Because Performance depends heavily on the Memory Bandwidth, it may vary heavily from System to System.
Best Case Scenario, expect Performance Identical to a dedicated GeForce 930M.

System Suggestions
Intel Iris Graphics 550 Mobile is best suited for resolutions up to and including 1366x768. We recommend 4GB of RAM for Optimal Performance.
GeForce 840M 2GB is a Middle-Class Mobile Graphics Card based on the First Revision of the Maxwell architecture.

The Maxwell architecture features many improvements and among them is the extremely large L2 Cache which allows NVIDIA to produce Graphics Cards with relatively small memory data transfer rates, without causing too much impact on the overall performance. Furthermore, the Shaders have been redesigned and are both more powerful and energy efficient.

It equips a GPU codenamed GM108 which has 3 SM activated and thus offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The central unit runs at 1029MHz and goes up to 1124MHz, in Turbo Mode.

The GPU accesses a 2GB frame buffer of DDR3, through a 64-bit memory interface. The Frame Buffer is exaggerated and in no way benefits the GPU. The memory clock operates at 1001MHz.

DirectX 11.2 Support (11.0 Hardware Default) and support for GPU Boost 2.0, GeForce Experience, PhysX and other technologies.

Power Consumption
With a rated board TDP of 33W, it will only be equipped in average sized notebooks.

Benchmarks indicate its performance is over 20% faster than the older GeForce GT 740M. Therefore, it should match GeForce GT 750M.

System Suggestions
We recommend a modest processor (Intel Core i5 Mobile) and 4GB of RAM for a notebook with GeForce 840M 2GB.
Recommended CPU
Possible GPU Upgrades
GPU Variants