GeForce GTX 970 and Radeon R9 255 OEM - video card comparison
GeForce GTX 970
Radeon R9 255 OEM
Architecture
Maxwell (2014−2018)
GCN 1.0 (2012−2020)
GPU code name
GM204
Cape Verde
Market segment
Desktop
Desktop
Release date
September 2014
December 2013
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Recommended system power (PSU)
500 Watt
-
Supplementary power connectors
2x 6-pins
1x 6-pin
SLI options
+
-
Boost clock speed
1178 MHz
930 MHz
Core clock speed
1050 MHz
900 MHz
CUDA cores
1664
-
Floating-point performance
3,920 gflops
952.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
1,500 million
Pipelines / CUDA cores
1664
512
Power consumption (TDP)
145 Watt
65 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
109 billion/sec
29.76
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
7.0 GB/s
4600 MHz
Memory bandwidth
224 GB/s
73.6 GB/s
Shared memory
-
-
Display Connectors
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
G-SYNC support
+
-
Audio input for HDMI
Internal
-
DirectX
12 (12_1)
12 (11_1)
CUDA
+
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
6.4
5.1
Vulkan
1.1.126
1.2.131
GameStream
+
-
GameWorks
+
-
GeForce ShadowPlay
+
-
GPU Boost
2.0
-