Radeon HD 3850 and GeForce GT 420M - video card comparison
Passmark - benchmark score Radeon HD 3850 vs GeForce GT 420M
Radeon HD 3850
404
GeForce GT 420M
417
Radeon HD 3850
GeForce GT 420M
Architecture
TeraScale (2005−2013)
Fermi (2010−2014)
GPU code name
RV670
N11P-GE
Market segment
Desktop
Laptop
Release date
November 2007
September 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
-
Core clock speed
668 MHz
500 MHz
CUDA cores
-
96
Floating-point performance
427.5 gflops
192 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
666 million
585 million
Pipelines / CUDA cores
320
96
Power consumption (TDP)
75 Watt
23 Watt
Texture fill rate
10.69
6.0 billion/sec
Memory type
GDDR3
(G)DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1660 MHz
800 MHz
Memory bandwidth
53.12 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 API
CUDA
-
+
OpenCL
N/A
1.1
OpenGL
3.3
4.5
Shader Model
4.1
5.1
Vulkan
N/A
N/A