Radeon HD 7970 and GeForce 7800 GS 20Pipes AGP - video card comparison
Radeon HD 7970
GeForce 7800 GS 20Pipes AGP
Architecture
GCN (2011−2017)
Curie (2003−2013)
GPU code name
Tahiti XT
G70
Market segment
Desktop
Desktop
Release date
December 2011
February 2006
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
AGP 8x
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x Molex
Boost clock speed
925 MHz
-
Core clock speed
-
425 MHz
Floating-point performance
3,789 gflops
-
Manufacturing process technology
28 nm
110 nm
Number of transistors
4,313 million
302 million
Pipelines / CUDA cores
2048
-
Power consumption (TDP)
300 Watt
75 Watt
Texture fill rate
118.4
8.500
Memory type
GDDR5
GDDR3
Maximum RAM amount
6 GB
512 MB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1375 MHz
1250 MBps
Memory bandwidth
264 GB/s
40 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x VGA, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
9.0c (9_3)
Mantle
-
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1
Shader Model
5.1
3.0
Vulkan
-
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-