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 Instinct MI25
CORE STATE
Vega 10
VRAM
16 GB
CLOCK SPEED
1500 MHz
TDP
300 W
BUS WIDTH
2048 bit
ARCHITECTURE
GCN 5.0
PROCESS
14 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Instinct MI25
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
Base Clock
—
1400 MHz
Boost Clock
—
1500 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
852 MHz
1704 Mbps effective
Memory
Memory Size
2 GB
16 GB
VRAM (MB)
2,048
16,384
+700.0%
Memory Type
GDDR5
HBM2
Memory Bus
256 bit
2048 bit
Bandwidth
134.4 GB/s
436.2 GB/s
Cache
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
4 MB
Performance
Pixel Rate
25.60 GPixel/s
96.00 GPixel/s
Texture Rate
38.40 GTexel/s
384.0 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
12.29 TFLOPS
FP64 (TFLOPS)
—
768.0 GFLOPS (1:16)
FP16 (TFLOPS)
—
24.58 TFLOPS (2:1)
Power
TDP
254 W
300 W
TDP (W)
254
300
+18.1%
Suggested PSU
600 W
700 W
Power Connectors
2x 8-pin
2x 8-pin
Architecture
Architecture
TeraScale 2
GCN 5.0
GPU Name
Barts
Vega 10
Generation
Northern Islands
(HD 6800)
Radeon Instinct
(MIx)
Process Size
40 nm
14 nm
Transistors
1,700 million
12,500 million
Die Size
255 mm²
495 mm²
Foundry
TSMC
GlobalFoundries
Density
6.7M / mm²
25.3M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_1)
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
—
267 mm
10.5 inches
Height
—
111 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
No outputs
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
FirePro Data Center
Successor
Southern Islands
—