Home GPU Comparison AMD Radeon R9 M290X vs AMD Radeon 620 Mobile

AMD Radeon R9 M290X vs AMD Radeon 620 Mobile

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M290X and 2GB VRAM Radeon 620 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M290X 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (153.6GB/s vs 14.40GB/s)
896 additional rendering cores
AMD Radeon 620 Mobile 's Advantages
Released 5 years and 4 months late
Boost Clock has increased by 14% (1024MHz vs 900MHz)
Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)
Radeon R9 M290X +193%
2.304 TFLOPS
Radeon 620 Mobile
0.786 TFLOPS
VS

Graphics Card

Jan 2014
Release Date
May 2019
Crystal System
Generation
Mobility Radeon
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8

Clock Speeds

850 MHz
Base Clock
730 MHz
900 MHz
Boost Clock
1024 MHz
1200 MHz
Memory Clock
900 MHz

Memory

4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
153.6GB/s
Bandwidth
14.40GB/s

Render Config

20
Compute Units
6
-
-
-
1280
Shading Units
384
80
TMUs
24
32
ROPs
8
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

28.80 GPixel/s
Pixel Rate
8.192 GPixel/s
72.00 GTexel/s
Texture Rate
24.58 GTexel/s
-
FP16 (half)
786.4 GFLOPS
2.304 TFLOPS
FP32 (float)
786.4 GFLOPS
144.0 GFLOPS
FP64 (double)
49.15 GFLOPS

Board Design

100W
TDP
50W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None

Graphics Processor

Neptune
GPU Name
Polaris 24
Neptune XT (216-0847000)
GPU Variant
Polaris 24 XL
GCN 1.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
1.55 billion
212 mm²
Die Size
125 mm²

Graphics Features

12 (11_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.2
OpenCL
2.0
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
6.3

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