Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game HD i7 3840QM Radeon R5 M255
Cyberpunk 2077 1728% 1120%
Assassins Creed: Valhalla 1572% 1016%
Call of Duty: Black Ops Cold War 1518% 980%
FIFA 21 822% 516%
Microsoft Flight Simulator 1518% 980%
Immortals: Fenyx Rising 1389% 894%
World of Warcraft: Shadowlands 2521% 1649%
Watch Dogs Legion 1664% 1077%
Genshin Impact 1728% 1120%
Grand Theft Auto VI 2473% 1617%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R5 M255 are significantly better than the Intel HD i7 3840QM.

The Radeon R5 M255 has a 275 MHz higher core clock speed and 16 more Texture Mapping Units than the HD i7 3840QM. This results in the Radeon R5 M255 providing 15.9 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 Radeon R5 M255 has a 275 MHz higher core clock speed and 6 more Render Output Units than the HD i7 3840QM. This results in the Radeon R5 M255 providing 6.1 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 Radeon R5 M255 was released over a year more recently than the HD i7 3840QM, and so the Radeon R5 M255 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD i7 3840QM.

The Radeon R5 M255 has 4096 MB video memory, but the HD i7 3840QM does not have an entry, so the two GPUs cannot be reliably compared in this area.

The HD i7 3840QM has 16 Shader Processing Units and the Radeon R5 M255 has 320. However, the actual shader performance of the HD i7 3840QM is 83 and the actual shader performance of the Radeon R5 M255 is 256. The Radeon R5 M255 having 173 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon R5 M255 delivers a slightly smoother and more efficient experience when processing graphical data than the HD i7 3840QM.

The HD i7 3840QM transistor size technology is 6 nm (nanometers) smaller than the Radeon R5 M255. This means that the HD i7 3840QM is expected to run very slightly cooler and achieve higher clock frequencies than the Radeon R5 M255.

The HD i7 3840QM requires 45 Watts to run and the Radeon R5 M255 requires 20 Watts. The HD i7 3840QM requires 25 Watts more than the Radeon R5 M255 to run. The difference is not significant enough for the HD i7 3840QM to have a noticeably larger impact on your yearly electricity bills than the Radeon R5 M255.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed650 MHzvs925 MHz
Boost Clock1300 MHzvs940 MHz
ArchitectureIvy Bridge GT2GCN 1.1 Sun PRO
OC Potential - vs Poor
Driver Support Good vs Great
Release Date29 Apr 2012vs12 Oct 2014
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - green tick vs green tick -
green tick vs -
2560x1440 - green tick vs green tick -
green tick vs -

GPU Memory

MemoryN/Avs4096 MB
Memory Speed800 MHzvs1000 MHz
Memory Bus64 Bitvs64 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth12.8GB/secvs16GB/sec
L2 Cache 1024 KB green tick vs 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units16vs320
Actual Shader Performance4%vs12%
Texture Mapping Units4vs20
Texture Rate2.6 GTexel/svs18.5 GTexel/s
Render Output Units2vs8
Pixel Rate1.3 GPixel/svs7.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power45 Wattsvs20 Watts
Recommended PSU--

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-3840QM 4-Core 2.8GHzvsIntel Core i3-4000M 2.4GHz
Recommended RAM4 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewN/ARadeon R5 M255 is an entry-level graphics card based on the second revision of the Graphics Core Next architecture.

It offers a core codenamed Sun PRO that packs 320 Shader Processing Units, 20 TMUs and 8 ROPs, on a 64-bit memory interface of DDR3. While the central unit runs at 925MHz and goes up to 940MHz, in Turbo Mode, the memory clock operates at 1000MHz. The regular version should offer 2GB of video memory but expect to see gimmicks of up to 4GB.
Technically R5 M255 is just a higher-clocked Radeon HD 8570M. Due to its very limited performance, even Intel's Iris Graphics Will offer better performance and so it ends up being an useless acquisition.
Recommended CPU
Possible GPU Upgrades
GPU Variants