Radeon HD 7770 and GeForce 7900 GTO - video card comparison
Radeon HD 7770
GeForce 7900 GTO
Architecture
GCN (2011−2017)
Curie (2003−2013)
GPU code name
Cape Verde
G71
Market segment
Desktop
Desktop
Release date
February 2012
October 2006
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
1000 MHz
650 MHz
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,500 million
278 million
Pipelines / CUDA cores
640
-
Power consumption (TDP)
80 Watt
81 Watt
Texture fill rate
40.00
15.60
Memory type
GDDR5
GDDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
4500 MHz
1320 MHz
Memory bandwidth
72 GB/s
42.24 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
9.0c (9_3)
OpenCL
1.2
N/A
OpenGL
4.6
2.1
Shader Model
5.1
3.0
Vulkan
1.2.131
N/A