Radeon HD 4850 and Radeon X1800 XT - video card comparison
Radeon HD 4850
Radeon X1800 XT
Architecture
Terascale 1 (2008−2010)
R500 (2005−2007)
GPU code name
RV770
R520
Market segment
Desktop
Desktop
Release date
June 2008
October 2005
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
625 MHz
600 MHz
Floating-point performance
1,000.0 gflops
-
Manufacturing process technology
55 nm
90 nm
Number of transistors
956 million
321 million
Pipelines / CUDA cores
800
-
Power consumption (TDP)
110 Watt
113 Watt
Texture fill rate
25.00
9.600
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
993 MHz
1400 MHz
Memory bandwidth
63.55 GB/s
44.8 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.1 (10_1)
9.0c (9_3)
OpenCL
1.1
N/A
OpenGL
3.3
2.0
Shader Model
4.1
3.0
Vulkan
N/A
N/A