Home GPU Comparison AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 7950M

AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 7950M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 2GB VRAM Radeon HD 7950M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages
Released 3 years and 1 months late
Larger VRAM bandwidth (174.7GB/s vs 128.0GB/s)
AMD Radeon HD 7950M 's Advantages
256 additional rendering cores
Lower TDP (75W vs 80W)

Score

Benchmark

FP32 (float)
Radeon R9 M390 Mac Edition +9%
1.962 TFLOPS
Radeon HD 7950M
1.792 TFLOPS
VS

Graphics Card

May 2015
Release Date
Apr 2012
Crystal System
Generation
London
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)

Clock Speeds

-
-
-
-
-
-
1365 MHz
Memory Clock
1000 MHz

Memory

2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
174.7GB/s
Bandwidth
128.0GB/s

Render Config

16
Compute Units
20
-
-
-
1024
Shading Units
1280
64
TMUs
80
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

30.66 GPixel/s
Pixel Rate
22.40 GPixel/s
61.31 GTexel/s
Texture Rate
56.00 GTexel/s
-
-
-
1.962 TFLOPS
FP32 (float)
1.792 TFLOPS
122.6 GFLOPS
FP64 (double)
-

Board Design

80W
TDP
75W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

Pitcairn
GPU Name
Wimbledon
Pitcairn PRO (215-0828062)
GPU Variant
Wimbledon PRO
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
2.8 billion
212 mm²
Die Size
212 mm²

Graphics Features

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

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