Radeon HD 6790 and GeForce GTS 450 Rev. 2 - video card comparison
Radeon HD 6790
GeForce GTS 450 Rev. 2
Architecture
Terascale 2 (2009−2015)
Fermi 2.0 (2010−2014)
GPU code name
Barts
GF116
Market segment
Desktop
Desktop
Release date
April 2011
March 2011
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
Core clock speed
840 MHz
783 MHz
Floating-point performance
1,344.0 gflops
601.3 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
1,170 million
Pipelines / CUDA cores
800
192
Power consumption (TDP)
150 Watt
106 Watt
Texture fill rate
33.60
25.06
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
3608 MHz
Memory bandwidth
134.4 GB/s
57.73 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x mini-HDMI
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