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
GEFORCE
P104-100
CORE STATE
GP104
VRAM
4 GB
CLOCK SPEED
1733 MHz
TDP
—
BUS WIDTH
256 bit
ARCHITECTURE
Pascal
PROCESS
16 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_opencl
3dmark_3dmark_steel_nomad_dx12
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
P104-100
Core Specs
Shading Units
960
1,920
+100.0%
Shaders
960
1,920
+100.0%
TMUs
48
120
+150.0%
ROPs
32
64
+100.0%
Compute Units
12
—
SM Count
—
15
Clocks
Base Clock
—
1607 MHz
Boost Clock
—
1733 MHz
GPU Clock
800 MHz
—
Memory Clock
1050 MHz
4.2 Gbps effective
1251 MHz
10 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5X
Memory Bus
256 bit
256 bit
Bandwidth
134.4 GB/s
320.3 GB/s
Cache
L1 Cache
8 KB (per CU)
48 KB (per SM)
L2 Cache
512 KB
2 MB
Performance
Pixel Rate
25.60 GPixel/s
110.9 GPixel/s
Texture Rate
38.40 GTexel/s
208.0 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
6.655 TFLOPS
FP64 (TFLOPS)
—
208.0 GFLOPS (1:32)
FP16 (TFLOPS)
—
104.0 GFLOPS (1:64)
Power
TDP
254 W
—
TDP (W)
254
—
Suggested PSU
600 W
200 W
Power Connectors
2x 8-pin
1x 8-pin
Architecture
Architecture
TeraScale 2
Pascal
GPU Name
Barts
GP104
Generation
Northern Islands
(HD 6800)
Mining GPUs
Process Size
40 nm
16 nm
Transistors
1,700 million
7,200 million
Die Size
255 mm²
314 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
22.9M / mm²
API Support
DirectX
11.2 (11_0)
12 (12_1)
OpenGL
4.4
4.6
Vulkan
—
1.4
OpenCL
1.2
3.0
CUDA
—
6.1
Shader Model
5.0
6.8
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
267 mm
10.5 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
No outputs
Bus Interface
PCIe 2.0 x16
PCIe 1.0 x4
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
—
Successor
Southern Islands
—