Radeon HD 4850 and Radeon HD 3850 X3 - video card comparison
Radeon HD 4850
Radeon HD 3850 X3
Architecture
Terascale 1 (2008−2010)
TeraScale (2005−2013)
GPU code name
RV770
RV670
Market segment
Desktop
Desktop
Release date
June 2008
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 8-pin
Core clock speed
625 MHz
669 MHz
Floating-point performance
1,000.0 gflops
-
Manufacturing process technology
55 nm
55 nm
Number of transistors
956 million
666 million
Pipelines / CUDA cores
800
320
Power consumption (TDP)
110 Watt
145 Watt
Texture fill rate
25.00
10.70
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
993 MHz
1700 MBps
Memory bandwidth
63.55 GB/s
54.4 GB/s
Display Connectors
2x DVI, 1x S-Video
4x DVI
DirectX
10.1 (10_1)
10.1 (10_1)
OpenCL
1.1
N/A
OpenGL
3.3
3.3 (full)
Shader Model4.14.1
Vulkan
N/A
N/A