Radeon HD 7770 and GeForce GT 420M - video card comparison
Passmark - benchmark score Radeon HD 7770 vs GeForce GT 420M
Radeon HD 7770
2235
GeForce GT 420M
417
Radeon HD 7770
GeForce GT 420M
Architecture
GCN (2011−2017)
Fermi (2010−2014)
GPU code name
Cape Verde
N11P-GE
Market segment
Desktop
Laptop
Release date
February 2012
September 2010
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
-
Core clock speed
1000 MHz
500 MHz
CUDA cores
-
96
Floating-point performance
-
192 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
585 million
Pipelines / CUDA cores
640
96
Power consumption (TDP)
80 Watt
23 Watt
Texture fill rate
40.00
6.0 billion/sec
Memory type
GDDR5
(G)DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
800 MHz
Memory bandwidth
72 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.2.131
N/A