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 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_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
RX 550X
Core Specs
Shading Units
960
512
-46.7%
Shaders
960
512
-46.7%
TMUs
48
32
-33.3%
ROPs
32
16
-50.0%
Compute Units
12
8
-33.3%
Clocks
Base Clock
—
1100 MHz
Boost Clock
—
1183 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
1500 MHz
6 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
96.00 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Performance
Pixel Rate
25.60 GPixel/s
18.93 GPixel/s
Texture Rate
38.40 GTexel/s
37.86 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
1,211.4 GFLOPS
FP64 (TFLOPS)
—
75.71 GFLOPS (1:16)
FP16 (TFLOPS)
—
1,211.4 GFLOPS (1:1)
Power
TDP
254 W
50 W
TDP (W)
254
50
-80.3%
Suggested PSU
600 W
250 W
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
GCN 4.0
GPU Name
Barts
Lexa
Generation
Northern Islands
(HD 6800)
Polaris
(RX 500X)
Process Size
40 nm
14 nm
Transistors
1,700 million
2,200 million
Die Size
255 mm²
103 mm²
Foundry
TSMC
GlobalFoundries
Density
6.7M / mm²
21.4M / 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
—
145 mm
5.7 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