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Gaming Performance Comparison

Recommended System Requirements
Game G1 900MHz GeForce 840M 2GB
Cyberpunk 2077 398% 559%
Assassins Creed: Valhalla 359% 508%
Call of Duty: Black Ops Cold War 411% 576%
Mafia: Definitive Edition 620% 853%
eFootball PES 2021 153% 235%
Genshin Impact 402% 565%
FIFA 21 153% 235%
Death Stranding 402% 565%
Watch Dogs Legion 384% 541%
Microsoft Flight Simulator 344% 488%

In terms of overall gaming performance, the graphical capabilities of the Intel G1 900MHz are noticeably better than the Nvidia GeForce 840M 2GB.

The GeForce 840M 2GB has a 729 MHz higher core clock speed but 8 fewer Texture Mapping Units than the G1 900MHz. The lower TMU count doesn't matter, though, as altogether the GeForce 840M 2GB manages to provide 15.1 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 5 more Render Output Units than the G1 900MHz. This results in the GeForce 840M 2GB providing 7.3 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 G1 900MHz was released over three years more recently than the GeForce 840M 2GB, and so the G1 900MHz is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce 840M 2GB when running the latest games.

The GeForce 840M 2GB has 2048 MB video memory, but the G1 900MHz does not have an entry, so the two GPUs cannot be reliably compared in this area.

The G1 900MHz has 256 Shader Processing Units and the GeForce 840M 2GB has 384. However, the actual shader performance of the G1 900MHz is 230 and the actual shader performance of the GeForce 840M 2GB is 583. The GeForce 840M 2GB having 353 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 G1 900MHz.

The G1 900MHz transistor size technology is 18 nm (nanometers) smaller than the GeForce 840M 2GB. This means that the G1 900MHz is expected to run slightly cooler and achieve higher clock frequencies than the GeForce 840M 2GB.

The G1 900MHz requires 28 Watts to run and the GeForce 840M 2GB requires 33 Watts. The GeForce 840M 2GB requires 5 Watts more than the G1 900MHz 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 G1 900MHz.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed300 MHzvs1029 MHz
Boost Clock900 MHzvs1124 MHz
ArchitectureIce LakeMaxwell GM108
OC Potential - vs Poor
Driver Support - vs Great
Release Date28 May 2019vs12 Mar 2014
GPU LinkGD LinkGD Link

Resolution Performance

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GPU Memory

MemoryN/Avs2048 MB
Memory Speed-vs1001 MHz
Memory Bus-vs64 Bit
Memory Type-vsDDR3
Memory Bandwidth-vs16GB/sec
L2 Cache 0 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 Units256vs384
Actual Shader Performance11%vs28%
Texture Mapping Units32vs24
Texture Rate9.6 GTexel/svs24.7 GTexel/s
Render Output Units3vs8
Pixel Rate0.9 GPixel/svs8.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)-vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections0vs-

GPU Power Requirements

Max Power28 Wattsvs33 Watts
Recommended PSU--

GPU Features

Shader Model6.4vs5.0
Open GL4.6vs4.5
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended Processor-Intel Core i3-4100M 2.5GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Intel Iris Plus Graphics G4 900MHz are integrated graphics in some of Intel's Ice Lake mobile processors. It can be found in Intel Core i3-1000G1 & Intel Core i3-1005G1

The Ice Lake architecture succeeds the Kaby lake architecture and aims for increased CPU and graphics performance.
New Features
These Gen 11 graphics solutions include the new Variable Rate Shading (VRS) support. This lets shading time for object shading in game to be allocated more accurately by the game's developers. So for example, a graphics depicting an object that cannot easily be seen can be marked as not needing such high performance and visual accuracy and thus save processing power. GPU
The central unit initially runs at 300MHz and goes up to 900MHz, in turbo mode.

Because Performance depends heavily on the Memory Bandwidth, it may vary from System to System.
Best case scenario, expect Intel Iris Plus Graphics G1 900MHz performance to be not as powerful as the older Iris Plus 640 onboard solution, which will reduce potential AAA gaming chances moving forward. We dont recommend this onboard solution for modern gaming.
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