Radeon R9 M395X Mac Edition vs Radeon HD 6870M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 M395X Mac Edition 's Advantages
Released 4 years and 4 months late
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (174.7GB/s vs 64.00GB/s)
1248 additional rendering cores
Radeon HD 6870M 's Advantages
Lower TDP (50W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M395X Mac Edition
+244%
3723
Radeon HD 6870M
1080
Graphics Card
May 2015
Release Date
Jan 2011
Crystal System
Generation
Vancouver
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
1365 MHz
Memory Clock
1000 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
174.7GB/s
Bandwidth
64.00GB/s
Render Config
32
Compute Units
10
2048
Shading Units
800
128
TMUs
40
32
ROPs
16
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
29.09 GPixel/s
Pixel Rate
10.80 GPixel/s
116.4 GTexel/s
Texture Rate
27.00 GTexel/s
3.723 TFLOPS
FP16 (half)
-
3.723 TFLOPS
FP32 (float)
1080 GFLOPS
232.7 GFLOPS
FP64 (double)
-
Board Design
250W
TDP
50W
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
Amethyst
GPU Name
Granville
Amethyst XT
GPU Variant
Granville XT
(216-0769024)
GCN 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
1.04 billion
366 mm²
Die Size
166 mm²
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.0
OpenCL
1.2
1.2
Vulkan
N/A
6.3
Shader Model
5.0
