GPU Comparison
RADEON
AMD Radeon R6 M255DX
CORE STATE
Jet
VRAM
System Shared
CLOCK SPEED
855 MHz
TDP
—
BUS WIDTH
System Shared
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2014
VS
RADEON
Radeon R7 M340
CORE STATE
Meso
VRAM
2 GB
CLOCK SPEED
1021 MHz
TDP
—
BUS WIDTH
64 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_vulkan
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
R6 M255DX
R7 M340
Core Specs
Shading Units
320
320
0.0%
Shaders
320
320
0.0%
TMUs
20
20
0.0%
ROPs
8
8
0.0%
Compute Units
5
5
0.0%
Clocks
Base Clock
780 MHz
943 MHz
Boost Clock
855 MHz
1021 MHz
Memory Clock
System Shared
1000 MHz
2 Gbps effective
Memory
Memory Size
System Shared
2 GB
VRAM (MB)
—
2,048
Memory Type
System Shared
DDR3
Memory Bus
System Shared
64 bit
Bandwidth
System Dependent
16.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
128 KB
128 KB
Performance
Pixel Rate
6.840 GPixel/s
8.168 GPixel/s
Texture Rate
17.10 GTexel/s
20.42 GTexel/s
FP32 (TFLOPS)
547.2 GFLOPS
653.4 GFLOPS
FP64 (TFLOPS)
34.20 GFLOPS (1:16)
40.84 GFLOPS (1:16)
FP16 (TFLOPS)
—
653.4 GFLOPS (1:1)
Architecture
Architecture
GCN 1.0
GCN 3.0
GPU Name
Jet
Meso
Generation
Gem System Hybrid
(Rx M200)
Gem System
(R7 M300)
Process Size
28 nm
28 nm
Transistors
690 million
1,550 million
Die Size
56 mm²
125 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.4M / mm²
API Support
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.170
OpenCL
2.1 (1.2)
2.1
Shader Model
6.5 (5.1)
6.5
Physical
Slot Width
IGP
—
Outputs
Portable Device Dependent
—
Bus Interface
IGP
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
—
Solar System
Successor
—
Polaris Mobile