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GPU Comparison
AMD Radeon HD 6490M Mac Edition vs AMD Radeon R7 M340
AMD Radeon HD 6490M Mac Edition vs AMD Radeon R7 M340
VS
AMD Radeon HD 6490M Mac Edition
AMD Radeon R7 M340
We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 1024MB VRAM Radeon R7 M340 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6490M Mac Edition 's Advantages
Larger VRAM bandwidth (25.41GB/s vs 16.00GB/s)
AMD Radeon R7 M340 's Advantages
Released 4 years and 7 months late
Boost Clock715MHz
More VRAM (1024GB vs 256GB)
224 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6490M Mac Edition
0.24 TFLOPS
Radeon R7 M340
+128%
0.549 TFLOPS
Radeon HD 6490M Mac Edition
VS
Radeon R7 M340
Graphics Card
May 2011
Release Date
Dec 2015
Vancouver
Generation
Gem System
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
620 MHz
-
Boost Clock
715 MHz
794 MHz
Memory Clock
1000 MHz
Memory
256MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
25.41GB/s
Bandwidth
16.00GB/s
Render Config
2
Compute Units
6
-
-
-
160
Shading Units
384
8
TMUs
24
4
ROPs
8
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
3.000 GPixel/s
Pixel Rate
5.720 GPixel/s
6.000 GTexel/s
Texture Rate
17.16 GTexel/s
-
-
-
240.0 GFLOPS
FP32 (float)
549.1 GFLOPS
-
FP64 (double)
34.32 GFLOPS
Board Design
Unknown
TDP
Unknown
-
-
-
Portable Device Dependent
Outputs
Portable Device Dependent
-
Power Connectors
None
Graphics Processor
Seymour
GPU Name
Opal
Seymour XTX M2 (216-0809000)
GPU Variant
Opal PRO
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.37 billion
Transistors
0.95 billion
67 mm²
Die Size
77 mm²
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
2.1 (1.2)
N/A
Vulkan
1.2.170
-
-
-
5.0
Shader Model
6.5 (5.1)
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