Radeon HD 7770 and Radeon HD 4750 - video card comparison
Radeon HD 7770
Radeon HD 4750
Architecture
GCN (2011−2017)
TeraScale (2005−2013)
GPU code name
Cape Verde
RV740
Market segment
Desktop
Desktop
Release date
February 2012
September 2009
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
1000 MHz
730 MHz
Floating-point performance
-
934.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
826 million
Pipelines / CUDA cores
640
640
Power consumption (TDP)
80 Watt
100 Watt
Texture fill rate
40.00
23.36
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
3200 MHz
Memory bandwidth
72 GB/s
51.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
10.1 (10_1)
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.2.131
N/A