Radeon HD 4870 and Radeon X1950 XTX Uber Edition - video card comparison
Radeon HD 4870
Radeon X1950 XTX Uber Edition
Architecture
TeraScale (2005−2013)
R500 (2005−2007)
GPU code name
RV770
R580+
Market segment
Desktop
Desktop
Release date
June 2008
January 2007
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
Core clock speed
750 MHz
670 MHz
Floating-point performance
1,200.0 gflops
-
Manufacturing process technology
55 nm
90 nm
Number of transistors
956 million
384 million
Pipelines / CUDA cores
800
-
Power consumption (TDP)
150 Watt
125 Watt
Texture fill rate
30.00
10.72
Memory type
GDDR5
GDDR4
Maximum RAM amount
1 GB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
3600 MHz
2100 MHz
Memory bandwidth
115.2 GB/s
67.2 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x VHDCI
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