Radeon HD 6790 and Radeon R7 Graphics - video card comparison
Radeon HD 6790
Radeon R7 Graphics
Architecture
Terascale 2 (2009−2015)
GCN 2.0 (2013−2017)
GPU code name
Barts
Spectre
Market segment
Desktop
Desktop
Release date
April 2011
January 2014
Interface
PCIe 2.0 x16
IGP
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
980 MHz
Core clock speed
840 MHz
686 MHz
Floating-point performance
1,344.0 gflops
526.8 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
2,410 million
Pipelines / CUDA cores
800
512
Power consumption (TDP)
150 Watt
15 Watt
Texture fill rate
33.60
31.36
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
1050 MHz
System Shared
Memory bandwidth
134.4 GB/s
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
11.2 (11_0)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.0
Vulkan
N/A
1.2.131