GeForce 7800 GTX and GeForce GT 420 OEM - video card comparison
GeForce 7800 GTX
GeForce GT 420 OEM
Architecture
Curie (2003−2013)
Fermi (2010−2014)
GPU code name
G70
GF108
Market segment
Desktop
Desktop
Release date
June 2005
September 2010
Interface
PCIe 1.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
None
Core clock speed
430 MHz
700 MHz
Floating-point performance
-
134.4 gflops
Manufacturing process technology
110 nm
40 nm
Number of transistors
302 million
585 million
Pipelines / CUDA cores
-
48
Power consumption (TDP)
86 Watt
50 Watt
Texture fill rate
10.32
2.800
Memory type
GDDR3
DDR3
Maximum RAM amount
256 MB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1200 MHz
1800 MHz
Memory bandwidth
38.4 GB/s
28.8 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
9.0c (9_3)
12 (11_0)
CUDA
-
2.1
OpenCL
N/A
1.1
OpenGL
2.1
4.6
Shader Model
3.0
5.1
Vulkan
N/A
N/A