GPU Comparison
RADEON
AMD Radeon R5 M255
CORE STATE
Topaz
VRAM
2 GB
CLOCK SPEED
940 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2014
VS
RADEON
Radeon R9 M295X
CORE STATE
Amethyst
VRAM
4 GB
CLOCK SPEED
—
TDP
250 W
BUS WIDTH
256 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
R5 M255
R9 M295X
Core Specs
Shading Units
384
2,048
+433.3%
Shaders
384
2,048
+433.3%
TMUs
24
128
+433.3%
ROPs
8
32
+300.0%
Compute Units
6
32
+433.3%
Clocks
Base Clock
925 MHz
—
Boost Clock
940 MHz
—
GPU Clock
—
723 MHz
Memory Clock
1000 MHz
2 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
DDR3
GDDR5
Memory Bus
128 bit
256 bit
Bandwidth
32.00 GB/s
160.0 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Performance
Pixel Rate
7.520 GPixel/s
23.14 GPixel/s
Texture Rate
22.56 GTexel/s
92.54 GTexel/s
FP32 (TFLOPS)
721.9 GFLOPS
2.961 TFLOPS
FP64 (TFLOPS)
45.12 GFLOPS (1:16)
185.1 GFLOPS (1:16)
FP16 (TFLOPS)
721.9 GFLOPS (1:1)
2.961 TFLOPS (1:1)
Power
TDP
—
250 W
TDP (W)
—
250
Power Connectors
—
None
Architecture
Architecture
GCN 3.0
GCN 3.0
GPU Name
Topaz
Amethyst
Generation
Gem System
(R5 M200)
Gem System
(R9 M200)
Process Size
28 nm
28 nm
Transistors
1,550 million
5,000 million
Die Size
125 mm²
366 mm²
Foundry
TSMC
TSMC
Density
12.4M / mm²
13.7M / mm²
API Support
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.170
OpenCL
2.1
2.1
Shader Model
6.5
6.5
Physical
Slot Width
—
MXM Module
Outputs
—
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
MXM-B (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
Solar System
Solar System
Successor
Polaris Mobile
Polaris Mobile