Radeon HD 4850 and Radeon HD 6450 GDDR5 - video card comparison
Radeon HD 4850
Radeon HD 6450 GDDR5
Architecture
Terascale 1 (2008−2010)
Terascale 2 (2009−2015)
GPU code name
RV770
Caicos
Market segment
Desktop
Desktop
Release date
June 2008
April 2011
Interface
PCIe 2.0 x16
-
Supplementary power connectors
1x 6-pin
-
Core clock speed
625 MHz
750 MHz
Floating-point performance
1,000.0 gflops
-
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
-
Pipelines / CUDA cores
800
160
Power consumption (TDP)
110 Watt
27 Watt
Texture fill rate
25.00
-
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
993 MHz
900 MHz
Memory bandwidth
63.55 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
-
DirectX
10.1 (10_1)
11
OpenCL
1.1
-
OpenGL
3.3
-
Shader Model
4.1
-
Vulkan
N/A
-