Radeon 620 Mobile vs Radeon HD 7870M
We compared two Mobile platform GPUs: 2GB VRAM Radeon 620 Mobile and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon 620 Mobile 's Advantages
Released 7 years and 1 months late
Boost Clock1024MHz
Radeon HD 7870M 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 14.40GB/s)
256 additional rendering cores
Lower TDP (45W vs 50W)
Score
Benchmark
FP32 (float)
Radeon 620 Mobile
786
Radeon HD 7870M
+30%
1024
Graphics Card
May 2019
Release Date
Apr 2012
Mobility Radeon
Generation
London
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
730 MHz
Base Clock
-
1024 MHz
Boost Clock
-
900 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
64.00GB/s
Render Config
6
Compute Units
10
384
Shading Units
640
24
TMUs
40
8
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
Theoretical Performance
8.192 GPixel/s
Pixel Rate
12.80 GPixel/s
24.58 GTexel/s
Texture Rate
32.00 GTexel/s
786.4 GFLOPS
FP16 (half)
-
786.4 GFLOPS
FP32 (float)
1024 GFLOPS
49.15 GFLOPS
FP64 (double)
64.00 GFLOPS
Board Design
50W
TDP
45W
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
Polaris 24
GPU Name
Heathrow
Polaris 24 XL
GPU Variant
Heathrow XT
(216-0835033)
GCN 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
1.5 billion
125 mm²
Die Size
123 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
6.3
Shader Model
5.1
