Home GPU Comparison AMD Radeon R5 M255 vs AMD Radeon HD 8970M

AMD Radeon R5 M255 vs AMD Radeon HD 8970M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 4GB VRAM Radeon HD 8970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages
Released 1 years and 5 months late
Boost Clock has increased by 4% (940MHz vs 900MHz)
AMD Radeon HD 8970M 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (153.6GB/s vs 32.00GB/s)
896 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon R5 M255
0.721 TFLOPS
Radeon HD 8970M +219%
2.304 TFLOPS
VS

Graphics Card

Oct 2014
Release Date
May 2013
Gem System
Generation
Solar System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16

Clock Speeds

925 MHz
Base Clock
850 MHz
940 MHz
Boost Clock
900 MHz
1000 MHz
Memory Clock
1200 MHz

Memory

2GB
Memory Size
4GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
32.00GB/s
Bandwidth
153.6GB/s

Render Config

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

Theoretical Performance

7.520 GPixel/s
Pixel Rate
28.80 GPixel/s
22.56 GTexel/s
Texture Rate
72.00 GTexel/s
721.9 GFLOPS
FP16 (half)
-
721.9 GFLOPS
FP32 (float)
2.304 TFLOPS
45.12 GFLOPS
FP64 (double)
144.0 GFLOPS

Board Design

Unknown
TDP
100W
-
-
-
Portable Device Dependent
Outputs
No outputs
-
-
-

Graphics Processor

Topaz
GPU Name
Neptune
Topaz PRO (216-0858030)
GPU Variant
Neptune XT (216-0847000)
GCN 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
2.8 billion
125 mm²
Die Size
212 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2.170
Vulkan
1.2
-
-
-
6.5
Shader Model
5.1

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