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GPU Comparison
AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 7490M
AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 7490M
VS
AMD Radeon R9 M390 Mac Edition
AMD Radeon HD 7490M
We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 1024MB VRAM Radeon HD 7490M 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 4 months late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (174.7GB/s vs 30.40GB/s)
864 additional rendering cores
AMD Radeon HD 7490M 's Advantages
Lower TDP (9W vs 80W)
Score
Benchmark
FP32 (float)
Radeon R9 M390 Mac Edition
+666%
1.962 TFLOPS
Radeon HD 7490M
0.256 TFLOPS
Radeon R9 M390 Mac Edition
VS
Radeon HD 7490M
Graphics Card
May 2015
Release Date
Jan 2012
Crystal System
Generation
London
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1365 MHz
Memory Clock
950 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
174.7GB/s
Bandwidth
30.40GB/s
Render Config
16
Compute Units
2
-
-
-
1024
Shading Units
160
64
TMUs
8
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
30.66 GPixel/s
Pixel Rate
3.200 GPixel/s
61.31 GTexel/s
Texture Rate
6.400 GTexel/s
-
-
-
1.962 TFLOPS
FP32 (float)
256.0 GFLOPS
122.6 GFLOPS
FP64 (double)
-
Board Design
80W
TDP
9W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
Pitcairn
GPU Name
Seymour
Pitcairn PRO (215-0828062)
GPU Variant
Seymour XTX (216-0810005)
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.8 billion
Transistors
0.37 billion
212 mm²
Die Size
67 mm²
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
5.0
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