GeForce GTX 770 and Radeon R9 255 OEM - video card comparison
GeForce GTX 770
Radeon R9 255 OEM
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK104
Cape Verde
Market segment
Desktop
Desktop
Release date
May 2013
December 2013
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Minimum recommended system power
600 Watt
-
Supplementary power connectors
One 8-pin and one 6-pin
1x 6-pin
Boost clock speed
1085 MHz
930 MHz
Core clock speed
1046 MHz
900 MHz
CUDA cores
1536
-
Floating-point performance
3,333 gflops
952.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
1,500 million
Pipelines / CUDA cores
1536
512
Power consumption (TDP)
230 Watt
65 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
134 billion/sec
29.76
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
7012 MHz
4600 MHz
Memory bandwidth
224.3 GB/s
73.6 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_1)
CUDA
+
-
OpenCL
1.2
1.2
OpenGL
4.3
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131
3D Gaming
+
-
3D Vision
+
-
3D Vision Live
+
-
Blu Ray 3D
+
-
PhysX
+
-