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 4000M
CORE STATE
GF104
VRAM
2 GB
CLOCK SPEED
—
TDP
100 W
BUS WIDTH
256 bit
ARCHITECTURE
Fermi
PROCESS
40 nm
LAUNCH DATE
2011
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 6850 X2
Quadro 4000M
Core Specs
Shading Units
960
336
-65.0%
Shaders
960
336
-65.0%
TMUs
48
56
+16.7%
ROPs
32
32
0.0%
Compute Units
12
—
SM Count
—
7
Clocks
GPU Clock
800 MHz
475 MHz
Shader Clock
—
950 MHz
Memory Clock
1050 MHz
4.2 Gbps effective
625 MHz
2.5 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
256 bit
256 bit
Bandwidth
134.4 GB/s
80.00 GB/s
Cache
L1 Cache
8 KB (per CU)
64 KB (per SM)
L2 Cache
512 KB
512 KB
Performance
Pixel Rate
25.60 GPixel/s
6.650 GPixel/s
Texture Rate
38.40 GTexel/s
26.60 GTexel/s
FP32 (TFLOPS)
1.536 TFLOPS
638.4 GFLOPS
FP64 (TFLOPS)
—
53.20 GFLOPS (1:12)
Power
TDP
254 W
100 W
TDP (W)
254
100
-60.6%
Suggested PSU
600 W
—
Power Connectors
2x 8-pin
None
Architecture
Architecture
TeraScale 2
Fermi
GPU Name
Barts
GF104
Generation
Northern Islands
(HD 6800)
Quadro Fermi-M
(x000M)
Process Size
40 nm
40 nm
Transistors
1,700 million
1,950 million
Die Size
255 mm²
332 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
—
2.1
Shader Model
5.0
5.1
Physical
Slot Width
Dual-slot
MXM Module
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
MXM-B (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
Evergreen
Quadro FX Mobile
Successor
Southern Islands
Quadro Kepler-M