AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 7950M
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Apr 2012
Generation
Crystal System
London
Type
Mobile
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1365 MHz
1000 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
174.7GB/s
128.0GB/s
Render Config
Compute Units
16
20
Shading Units
1024
1280
TMUs
64
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
30.66 GPixel/s
22.40 GPixel/s
Texture Rate
61.31 GTexel/s
56.00 GTexel/s
FP32 (float)
1.962 TFLOPS
1.792 TFLOPS
FP64 (double)
122.6 GFLOPS
—
Graphics Processor
GPU Name
Pitcairn
Wimbledon
GPU Variant
Pitcairn PRO(215-0828062)
Wimbledon PRO
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
2.8 billion
Die Size
212 mm²
212 mm²
Board Design
TDP
80W
75W
Outputs
No outputs
No outputs
Power Connectors
None
—
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.