GPU Comparison
RADEON
AMD Radeon HD 6850 X2
CORE STATE
Barts
VRAM
2 GB
CLOCK SPEED
—
TDP
254 W
BUS WIDTH
256 bit
ARCHITECTURE
TeraScale 2
PROCESS
40 nm
LAUNCH DATE
2011
VS
RADEON
Radeon RX 560X
CORE STATE
Polaris 21
VRAM
4 GB
CLOCK SPEED
1275 MHz
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
RX 560X
Core Specs
Shading Units
960
1,024
+6.7%
Shaders
960
1,024
+6.7%
TMUs
48
64
+33.3%
ROPs
32
16
-50.0%
Compute Units
12
16
+33.3%
Clocks
Base Clock
—
1175 MHz
Boost Clock
—
1275 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
1750 MHz
7 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
128 bit
Bandwidth
134.4 GB/s
112.0 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Performance
Pixel Rate
25.60 GPixel/s
20.40 GPixel/s
Texture Rate
38.40 GTexel/s
81.60 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
2.611 TFLOPS
FP64 (TFLOPS)
—
163.2 GFLOPS (1:16)
FP16 (TFLOPS)
—
2.611 TFLOPS (1:1)
Power
TDP
254 W
75 W
TDP (W)
254
75
-70.5%
Suggested PSU
600 W
250 W
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
GCN 4.0
GPU Name
Barts
Polaris 21
Generation
Northern Islands
(HD 6800)
Polaris
(RX 500X)
Process Size
40 nm
14 nm
Transistors
1,700 million
3,000 million
Die Size
255 mm²
123 mm²
Foundry
TSMC
GlobalFoundries
Density
6.7M / mm²
24.4M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
Vulkan
—
1.3
OpenCL
1.2
2.1
Shader Model
5.0
6.7
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
170 mm
6.7 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
Polaris
Successor
Southern Islands
Vega