Home GPU Comparison AMD Radeon HD 8770M vs AMD Radeon R5 M420

AMD Radeon HD 8770M vs AMD Radeon R5 M420

AMD Radeon HD 8770M
VS
AMD Radeon R5 M420
AMD Radeon HD 8770M
AMD Radeon R5 M420
We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8770M and 4GB VRAM Radeon R5 M420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8770M 's Advantages
Larger VRAM bandwidth (72.00GB/s vs 16.00GB/s)
64 additional rendering cores
AMD Radeon R5 M420 's Advantages
Released 3 years and 1 months late
Boost Clock has increased by 3% (850MHz vs 825MHz)
More VRAM (4GB vs 2GB)

Score

Benchmark

FP32 (float)
Radeon HD 8770M +16%
0.633 TFLOPS
Radeon R5 M420
0.544 TFLOPS
Radeon HD 8770M
VS
Radeon R5 M420

Graphics Card

Apr 2013
Release Date
May 2016
Solar System
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x8

Clock Speeds

775 MHz
Base Clock
780 MHz
825 MHz
Boost Clock
850 MHz
1125 MHz
Memory Clock
1000 MHz

Memory

2GB
Memory Size
4GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
64bit
72.00GB/s
Bandwidth
16.00GB/s

Render Config

6
Compute Units
5
-
-
-
384
Shading Units
320
24
TMUs
20
8
ROPs
8
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

6.600 GPixel/s
Pixel Rate
6.800 GPixel/s
19.80 GTexel/s
Texture Rate
17.00 GTexel/s
-
-
-
633.6 GFLOPS
FP32 (float)
544.0 GFLOPS
39.60 GFLOPS
FP64 (double)
34.00 GFLOPS

Board Design

Unknown
TDP
Unknown
-
-
-
Portable Device Dependent
Outputs
Portable Device Dependent
-
-
-

Graphics Processor

Mars
GPU Name
Jet
Mars S3 XT (216-0842018)
GPU Variant
Jet PRO (216-0856040)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
0.95 billion
Transistors
0.69 billion
77 mm²
Die Size
56 mm²

Graphics Features

12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1 (1.2)
OpenCL
2.1 (1.2)
1.2.170
Vulkan
1.2.170
-
-
-
6.5 (5.1)
Shader Model
6.5 (5.1)

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