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 RX 550X
CORE STATE
Lexa
VRAM
4 GB
CLOCK SPEED
1183 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_vulkan
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
R6 M255DX
RX 550X
Core Specs
Shading Units
320
512
+60.0%
Shaders
320
512
+60.0%
TMUs
20
32
+60.0%
ROPs
8
16
+100.0%
Compute Units
5
8
+60.0%
Clocks
Base Clock
780 MHz
1100 MHz
Boost Clock
855 MHz
1183 MHz
Memory Clock
System Shared
1500 MHz
6 Gbps effective
Memory
Memory Size
System Shared
4 GB
VRAM (MB)
—
4,096
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
128 bit
Bandwidth
System Dependent
96.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
128 KB
512 KB
Performance
Pixel Rate
6.840 GPixel/s
18.93 GPixel/s
Texture Rate
17.10 GTexel/s
37.86 GTexel/s
FP32 (TFLOPS)
547.2 GFLOPS
1,211.4 GFLOPS
FP64 (TFLOPS)
34.20 GFLOPS (1:16)
75.71 GFLOPS (1:16)
FP16 (TFLOPS)
—
1,211.4 GFLOPS (1:1)
Power
TDP
—
50 W
TDP (W)
—
50
Suggested PSU
—
250 W
Power Connectors
—
None
Architecture
Architecture
GCN 1.0
GCN 4.0
GPU Name
Jet
Lexa
Generation
Gem System Hybrid
(Rx M200)
Polaris
(RX 500X)
Process Size
28 nm
14 nm
Transistors
690 million
2,200 million
Die Size
56 mm²
103 mm²
Foundry
TSMC
GlobalFoundries
Density
12.3M / mm²
21.4M / mm²
API Support
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.3
OpenCL
2.1 (1.2)
2.1
Shader Model
6.5 (5.1)
6.7
Physical
Slot Width
IGP
Dual-slot
Length
—
145 mm
5.7 inches
Outputs
Portable Device Dependent
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Bus Interface
IGP
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
—
Polaris
Successor
—
Vega