Radeon HD 5870 and GeForce GTX 660M - video card comparison
Passmark - benchmark score Radeon HD 5870 vs GeForce GTX 660M
Radeon HD 5870
2282
GeForce GTX 660M
1478
Radeon HD 5870
GeForce GTX 660M
Architecture
TeraScale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Cypress
N13E-GE
Market segment
Desktop
Laptop
Release date
September 2009
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
2x 6-pin
-
SLI options
-
+
Boost clock speed
-
950 MHz
Core clock speed
850 MHz
835 MHz
CUDA cores
-
384
Floating-point performance
2,720.0 gflops
729.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
2,154 million
1,270 million
Pipelines / CUDA cores
1600
384
Power consumption (TDP)
188 Watt
50 Watt
Texture fill rate
68.00
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
4800 MHz
2000 MHz
Memory bandwidth
153.6 GB/s
64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
11.2 (11_0)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126
Optimus
-
+