Radeon HD 6790 and Radeon X1550 - video card comparison
Passmark - benchmark score Radeon HD 6790 vs Radeon X1550
Radeon HD 6790
1664
Radeon X1550
68
Radeon HD 6790
Radeon X1550
Architecture
Terascale 2 (2009−2015)
Ultra-Threaded SE
GPU code name
Barts
RV516
Market segment
Desktop
Desktop
Release date
April 2011
2007
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
840 MHz
550 MHz
Floating-point performance
1,344.0 gflops
-
Manufacturing process technology
40 nm
90 nm
Number of transistors
1,700 million
105 million
Pipelines / CUDA cores
800
-
Power consumption (TDP)
150 Watt
27 Watt
Texture fill rate
33.60
2.200
Memory type
GDDR5
DDR2
Maximum RAM amount
1 GB
256 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
800 MBps
Memory bandwidth
134.4 GB/s
12.8 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
11.2 (11_0)
9.0c (9_3)
OpenCL
1.2
N/A
OpenGL
4.4
2.1
Shader Model
5.0
3.0
Vulkan
N/A
N/A