Radeon R9 270 1024SP and Radeon HD 7950 Mac Edition - video card comparison
Radeon R9 270 1024SP
Radeon HD 7950 Mac Edition
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Pitcairn
Tahiti
Market segment
Desktop
Desktop
Release date
March 2015
March 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
2x 6-pin
Boost clock speed
925 MHz
-
Core clock speed
900 MHz
800 MHz
Floating-point performance
1,894 gflops
2,867 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
4,313 million
Pipelines / CUDA cores
1024
1792
Power consumption (TDP)
150 Watt
200 Watt
Texture fill rate
59.20
89.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
4800 MHz
5000 MHz
Memory bandwidth
153.6 GB/s
240.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
HDMI
+
+
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131