Radeon HD 4870 and GeForce GT 620M - video card comparison
Passmark - benchmark score Radeon HD 4870 vs GeForce GT 620M
Radeon HD 4870
1411
GeForce GT 620M
447
Radeon HD 4870
GeForce GT 620M
Architecture
TeraScale (2005−2013)
Fermi (2010−2014)
GPU code name
RV770
N13P-GLP / N13M-GS
Market segment
Desktop
Laptop
Release date
June 2008
March 2012
Bus support
-
PCI Express 2.0
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
715 MHz
Core clock speed
750 MHz
Up to 625 MHz
CUDA cores
-
96
Floating-point performance
1,200.0 gflops
253.4 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
585 million
Pipelines / CUDA cores
800
96
Power consumption (TDP)
150 Watt
15 Watt
Texture fill rate
30.00
Up to 10.0 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
Up to 128bit
Memory clock speed
3600 MHz
1800 MHz
Memory bandwidth
115.2 GB/s
Up to 28.8 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
N/A
3D Blu-Ray
-
+
Optimus
-
+