Radeon HD 6790 and GeForce GT 440 OEM - video card comparison
Radeon HD 6790
GeForce GT 440 OEM
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Barts
GF106
Market segment
Desktop
Desktop
Release date
April 2011
October 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
840 MHz
810 MHz
Floating-point performance
1,344.0 gflops
466.6 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
1,170 million
Pipelines / CUDA cores
800
144
Power consumption (TDP)
150 Watt
65 Watt
Texture fill rate
33.60
19.44
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1536 MB
Memory bus width
256 Bit
192 Bit
Memory clock speed
1050 MHz
1800 MHz
Memory bandwidth
134.4 GB/s
43.2 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
N/A