Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game 645 GT3e Radeon R9 M365X 4GB
Cyberpunk 2077 381% 438%
Hitman 3 526% 600%
Resident Evil 8 381% 438%
Assassins Creed: Valhalla 340% 392%
FIFA 21 143% 171%
Grand Theft Auto VI 577% 657%
Call of Duty: Black Ops Cold War 326% 376%
Genshin Impact 381% 438%
Far Cry 6 596% 679%
The Medium 500% 571%

In terms of overall gaming performance, the graphical capabilities of the Intel 645 GT3e are very slightly better than the AMD Radeon R9 M365X 4GB.

The R9 M365X has a 325 MHz higher core clock speed and 16 more Texture Mapping Units than the 645 GT3e. This results in the R9 M365X providing 17.8 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 R9 M365X has a 325 MHz higher core clock speed and 13 more Render Output Units than the 645 GT3e. This results in the R9 M365X providing 9.1 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 645 GT3e was released over three years more recently than the R9 M365X, and so the 645 GT3e is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the R9 M365X when running the latest games.

The R9 M365X has 4096 MB video memory, but the 645 GT3e does not have an entry, so the two GPUs cannot be reliably compared in this area.

The 645 GT3e has 384 Shader Processing Units and the Radeon R9 M365X 4GB has 640. However, the actual shader performance of the 645 GT3e is 442 and the actual shader performance of the R9 M365X is 340. The 645 GT3e having 102 better shader performance is not particularly notable, as altogether the R9 M365X performs better when taking into account other relevant data.

The 645 GT3e transistor size technology is 14 nm (nanometers) smaller than the R9 M365X. This means that the 645 GT3e is expected to run slightly cooler and achieve higher clock frequencies than the R9 M365X.

The 645 GT3e requires 15 Watts to run and the Radeon R9 M365X 4GB requires 50 Watts. The R9 M365X requires 35 Watts more than the 645 GT3e to run. The difference is significant enough that the R9 M365X may have a slight adverse affect on your yearly electricity bills in comparison to the 645 GT3e.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed300 MHzvs625 MHz
Boost Clock1150 MHzvs-
ArchitectureKaby LakeGCN 1.0 Venus PRO
OC Potential - vs Good
Driver Support - vs Great
Release Date01 Jun 2019vs09 Jun 2015
GPU LinkGD LinkGD Link

Resolution Performance

vs green tick
vs green tick
green tick vs
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green tick vs

GPU Memory

MemoryN/Avs4096 MB
Memory Speed-vs1000 MHz
Memory Bus-vs128 Bit
Memory Type-vsGDDR5
Memory Bandwidth-vs64GB/sec
L2 Cache 0 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs640
Actual Shader Performance21%vs16%
Texture Mapping Units24vs40
Texture Rate7.2 GTexel/svs25 GTexel/s
Render Output Units3vs16
Pixel Rate0.9 GPixel/svs10 GPixel/s

GPU Outputs

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

GPU Power Requirements

Max Power15 Wattsvs50 Watts
Recommended PSU--

GPU Features

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

GPU Supporting Hardware

Recommended Processor-Intel Core i5-4340M 2.9GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Intel Iris Plus Graphics 645 GT3e are integrated graphics in some of Intel's Kaby Lake mobile processors. It can be found in Intel Core i5-8257U and the Intel Core i5-8557U

The Kaby Lake architecture succeeds the Skylake architecture and aims for increased CPU and graphics performance, via the same power requirements. It includes support for DirectX 12.1, OpenCL 2.1 and OpenGL 4.6.
The central unit initially runs at 300MHz and goes up to 1150MHz, in turbo mode in the Intel Core i5-8557U.

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 AMd HD 6790.
Radeon R9 M365X 4GB is a Fast-Middle-Class Mobile Graphics Card based on the First Generation of the Graphics Core Next Architecture (GCN).

Radeon R9 M365X 4GB Features a GPU Codenamed Venus PRO which is a First Gen GCN GPU and is identical to the Cape GPU used on the Desktop Radeon R7 250X.
Venus PRO has 10 Compute Units Unlocked and thus offers 640 Shader Processing Units, 40 TMUs and 16 ROPs.

The Central Unit is Clocked at 625MHz.

Memory: Speed
The GPU is equipped with fast GDDR5 and Accesses the Frame Buffer through a 128-bit Memory Interface. The Memory Clock Operates at 1000MHz.

Memory: Frame Buffer
The GPU can fill up a Memory Pool of up to 4GB. Under most circumstances, this only proves useful in certain 3D Games whose Settings Require Large Amounts of Memory.
However, because the GPU itself is too weak to work under other circumstances in which 4GB of Memory are needed - such as 4K Gaming, a Large Frame Buffer is mostly a Gimmick.

Power Consumption
With a rated board TDP of 50W, it is suited for large laptops.

Radeon R9 M365X 4GB is a Direct Rebrand of Radeon R9 M265X.
Performance is Comparable to the Desktop Radeon R7 250.

System Suggestions
Radeon R9 M365X 4GB is best suited for resolutions up to and including 1600x900. We recommend a Strong Processor and 8GB of RAM for Optimal Performance.
Recommended CPU
Possible GPU Upgrades
GPU Variants