Radeon HD 6790 and Whistler - video card comparison
Radeon HD 6790
Whistler
Architecture
Terascale 2 (2009−2015)
TeraScale 2 (2009−2015)
GPU code name
Barts
Whistler
Market segment
Desktop
Desktop
Release date
April 2011
-
Interface
PCIe 2.0 x16
-
Supplementary power connectors
2x 6-pin
-
Core clock speed
840 MHz
-
Floating-point performance
1,344.0 gflops
-
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
716 million
Pipelines / CUDA cores
800
480
Power consumption (TDP)
150 Watt
-
Texture fill rate
33.60
-
Memory type
GDDR5
-
Maximum RAM amount
1 GB
-
Memory bus width
256 Bit
-
Memory clock speed
1050 MHz
-
Memory bandwidth
134.4 GB/s
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
-
HDMI
+
-
DirectX
11.2 (11_0)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
Vulkan
N/A
N/A