Radeon HD 4870 and GeForce GTX 660M - video card comparison
Passmark - benchmark score Radeon HD 4870 vs GeForce GTX 660M
Radeon HD 4870
1411
GeForce GTX 660M
1478
Radeon HD 4870
GeForce GTX 660M
Architecture
TeraScale (2005−2013)
Kepler (2012−2018)
GPU code name
RV770
N13E-GE
Market segment
Desktop
Laptop
Release date
June 2008
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
750 MHz
835 MHz
CUDA cores
-
384
Floating-point performance
1,200.0 gflops
729.6 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
1,270 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
150 Watt
50 Watt
Texture fill rate
30.00
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
3600 MHz
2000 MHz
Memory bandwidth
115.2 GB/s
64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
10.1 (10_1)
12 API
CUDA
-
+
OpenCL
1.1
1.1
OpenGL
3.3
4.5
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126
Optimus
-
+