Radeon HD 4855 and GeForce RTX 3080 Mobile - video card comparison
Radeon HD 4855
GeForce RTX 3080 Mobile
Architecture
TeraScale (2005−2013)
Ampere (2020−2022)
GPU code name
RV770
GN20-E7 GA104
Market segment
Desktop
Laptop
Release date
January 2010
January 2021
Interface
PCIe 2.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 6-pin
-
Boost clock speed
-
1245 - 1710 MHz
Core clock speed
575 MHz
780 - 1100 MHz
Floating-point performance
736.0 gflops
-
Manufacturing process technology
55 nm
8 nm
Number of transistors
956 million
17,400 million
Pipelines / CUDA cores
640
6144
Power consumption (TDP)
110 Watt
150 Watt (80 - 150 Watt TGP)
Texture fill rate
18.40
296.6
Memory type
GDDR5
GDDR6
Maximum RAM amount
512 MB
16 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
3600 MHz
14000 MHz
Memory bandwidth
115.2 GB/s
384.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
10.1 (10_1)
12 Ultimate (12_2)
CUDA
-
8.6
OpenCL
1.1
2.0
OpenGL
3.3
4.6
Shader Model
4.1
6.5
Vulkan
N/A
1.2