Radeon HD 7770 and GeForce GT 745A - video card comparison
Passmark - benchmark score Radeon HD 7770 vs GeForce GT 745A
Radeon HD 7770
2235
GeForce GT 745A
1265
Radeon HD 7770
GeForce GT 745A
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Cape Verde
GK107
Market segment
Desktop
Desktop
Release date
February 2012
August 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
-
Boost clock speed
-
915 MHz
Core clock speed
1000 MHz
837 MHz
Floating-point performance
-
642.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
1,270 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
80 Watt
33 Watt
Texture fill rate
40.00
29.28
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1800 MHz
Memory bandwidth
72 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126