Radeon HD 4890 and GeForce GTX 745 OEM - video card comparison
Radeon HD 4890
GeForce GTX 745 OEM
Architecture
TeraScale (2005−2013)
Maxwell (2014−2018)
GPU code name
RV790
GM107
Market segment
Desktop
Desktop
Release date
April 2009
February 2014
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
850 MHz
1033 MHz
Floating-point performance
1,360.0 gflops
793.3 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
959 million
1,870 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
190 Watt
55 Watt
Texture fill rate
34.00
24.79
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3900 MHz
1800 MHz
Memory bandwidth
124.8 GB/s
28.8 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
5.0
OpenCL
1.1
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126