GeForce GTX 580M and Radeon HD 6850M - video card comparison
GeForce GTX 580M
Radeon HD 6850M
Architecture
Fermi (2010−2014)
Terascale 2 (2009−2015)
GPU code name
N12E-GTX2
Granville Pro/LP
Market segment
Laptop
Laptop
Release date
June 2011
January 2011
Bus support
PCI-E 2.0
-
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
SLI options
+
-
Core clock speed
620 MHz
575 / 675 MHz
CUDA cores
384
-
Floating-point performance
952.3 gflops
1,080.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,950 million
1,040 million
Pipelines / CUDA cores
384
800
Power consumption (TDP)
100 Watt
50 Watt
Texture fill rate
39.7 billion/sec
27.00
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
2 MB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1500 MHz
800 MHz
Memory bandwidth
96.0 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 API
11.2 (11_0)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.4
Shader Model
5.1
5.0
Vulkan
N/A
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
Optimus
+
-