Radeon HD 7770 and GeForce GTS 450 Rev. 3 - video card comparison
Radeon HD 7770
GeForce GTS 450 Rev. 3
Architecture
GCN (2011−2017)
Fermi 2.0 (2010−2014)
GPU code name
Cape Verde
GF116
Market segment
Desktop
Desktop
Release date
February 2012
July 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
-
Core clock speed
1000 MHz
783 MHz
Floating-point performance
-
451.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
1,170 million
Pipelines / CUDA cores
640
144
Power consumption (TDP)
80 Watt
106 Watt
Texture fill rate
40.00
18.79
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1400 MHz
Memory bandwidth
72 GB/s
22.4 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x mini-HDMI
Eyefinity
+
-
HDMI
+
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
N/A