Radeon HD 6790 and Radeon HD 8570A - video card comparison
Radeon HD 6790
Radeon HD 8570A
Architecture
Terascale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
Barts
Sun
Market segment
Desktop
Desktop
Release date
April 2011
March 2013
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
825 MHz
Core clock speed
840 MHz
750 MHz
Floating-point performance
1,344.0 gflops
528.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
690 million
Pipelines / CUDA cores
800
320
Power consumption (TDP)
150 Watt
-
Texture fill rate
33.60
16.50
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1050 MHz
2000 MHz
Memory bandwidth
134.4 GB/s
16 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
11.2 (11_0)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.2.131