GeForce GTX 745 OEM and Radeon X1900 XT - video card comparison
GeForce GTX 745 OEM
Radeon X1900 XT
Architecture
Maxwell (2014−2018)
R500 (2005−2007)
GPU code name
GM107
R580
Market segment
Desktop
Desktop
Release date
February 2014
January 2006
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
1x 6-pin
Core clock speed
1033 MHz
625 MHz
Floating-point performance
793.3 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,870 million
384 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
55 Watt
100 Watt
Texture fill rate
24.79
10.00
Memory type
DDR3
GDDR3
Maximum RAM amount
4 GB
256 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1800 MHz
1450 MBps
Memory bandwidth
28.8 GB/s
46.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
2x DVI, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
9.0c (9_3)
CUDA
5.0
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1 (full)
Shader Model5.13.0
Vulkan
1.1.126
N/A