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
Quadro 6000
CORE STATE
GF100
VRAM
6 GB
CLOCK SPEED
—
TDP
204 W
BUS WIDTH
384 bit
ARCHITECTURE
Fermi
PROCESS
40 nm
LAUNCH DATE
2010
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Quadro 6000
Core Specs
Shading Units
960
448
-53.3%
Shaders
960
448
-53.3%
TMUs
48
56
+16.7%
ROPs
32
48
+50.0%
Compute Units
12
—
SM Count
—
14
Clocks
GPU Clock
800 MHz
574 MHz
Shader Clock
—
1147 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
747 MHz
3 Gbps effective
Memory
Memory Size
2 GB
6 GB
VRAM (MB)
2,048
6,144
+200.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
384 bit
Bandwidth
134.4 GB/s
143.4 GB/s
Cache
L1 Cache
8 KB (per CU)
64 KB (per SM)
L2 Cache
512 KB
768 KB
Performance
Pixel Rate
25.60 GPixel/s
16.07 GPixel/s
Texture Rate
38.40 GTexel/s
32.14 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
1,027.7 GFLOPS
FP64 (TFLOPS)
—
513.9 GFLOPS (1:2)
Power
TDP
254 W
204 W
TDP (W)
254
204
-19.7%
Suggested PSU
600 W
550 W
Power Connectors
2x 8-pin
1x 6-pin + 1x 8-pin
Architecture
Architecture
TeraScale 2
Fermi
GPU Name
Barts
GF100
Generation
Northern Islands
(HD 6800)
Quadro Fermi
(x000)
Process Size
40 nm
40 nm
Transistors
1,700 million
3,100 million
Die Size
255 mm²
529 mm²
Foundry
TSMC
TSMC
Density
6.7M / mm²
5.9M / mm²
API Support
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
1.1
CUDA
—
2.0
Shader Model
5.0
5.1
Physical
Slot Width
Dual-slot
Dual-slot
Length
—
248 mm
9.8 inches
Height
—
111 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x DVI2x DisplayPort1x S-Video
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Other
Launch Price
—
4,399 USD
Production
End-of-life
End-of-life
Predecessor
Evergreen
Quadro FX Tesla
Successor
Southern Islands
Quadro Kepler