Radeon R9 M395X Mac Edition vs Radeon HD 6490M Mac Edition
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 256MB VRAM Radeon HD 6490M Mac Edition 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 late
More VRAM (4GB vs 256GB)
Larger VRAM bandwidth (174.7GB/s vs 25.41GB/s)
1888 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R9 M395X Mac Edition
+1451%
3723
Radeon HD 6490M Mac Edition
240
Graphics Card
May 2015
Release Date
May 2011
Crystal System
Generation
Vancouver
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16
Clock Speeds
1365 MHz
Memory Clock
794 MHz
Memory
4GB
Memory Size
256MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
174.7GB/s
Bandwidth
25.41GB/s
Render Config
32
Compute Units
2
2048
Shading Units
160
128
TMUs
8
32
ROPs
4
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
29.09 GPixel/s
Pixel Rate
3.000 GPixel/s
116.4 GTexel/s
Texture Rate
6.000 GTexel/s
3.723 TFLOPS
FP16 (half)
-
3.723 TFLOPS
FP32 (float)
240.0 GFLOPS
232.7 GFLOPS
FP64 (double)
-
Board Design
250W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Processor
Amethyst
GPU Name
Seymour
Amethyst XT
GPU Variant
Seymour XTX M2
(216-0809000)
GCN 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
0.37 billion
366 mm²
Die Size
67 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
