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 Pro Duo
CORE STATE
Capsaicin
VRAM
4 GB
CLOCK SPEED
—
TDP
350 W
BUS WIDTH
4096 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2016
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Pro Duo
Core Specs
Shading Units
960
4,096
+326.7%
Shaders
960
4,096
+326.7%
TMUs
48
256
+433.3%
ROPs
32
64
+100.0%
Compute Units
12
64
+433.3%
Clocks
GPU Clock
800 MHz
1000 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
500 MHz
1000 Mbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
HBM
Memory Bus
256 bit
4096 bit
Bandwidth
134.4 GB/s
512.0 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Performance
Pixel Rate
25.60 GPixel/s
64.00 GPixel/s
Texture Rate
38.40 GTexel/s
256.0 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
8.192 TFLOPS
FP64 (TFLOPS)
—
512.0 GFLOPS (1:16)
FP16 (TFLOPS)
—
8.192 TFLOPS (1:1)
Power
TDP
254 W
350 W
TDP (W)
254
350
+37.8%
Suggested PSU
600 W
750 W
Power Connectors
2x 8-pin
3x 8-pin
Architecture
Architecture
TeraScale 2
GCN 3.0
GPU Name
Barts
Capsaicin
Generation
Northern Islands
(HD 6800)
Radeon Pro GCN
Process Size
40 nm
28 nm
Transistors
1,700 million
8,900 million
Die Size
255 mm²
596 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
14.9M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
Vulkan
—
1.2.170
OpenCL
1.2
2.1
Shader Model
5.0
6.5
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
277 mm
10.9 inches
Height
—
111 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x HDMI 1.4a3x DisplayPort 1.2
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Launch Price
—
1,499 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
FirePro GCN
Successor
Southern Islands
Radeon Pro Polaris