Radeon HD 7970 and GeForce 9800M GTX SLI - video card comparison
Radeon HD 7970
GeForce 9800M GTX SLI
Architecture
GCN (2011−2017)
G9x (2007−2010)
GPU code name
Tahiti XT
NB9E-GTX
Market segment
Desktop
Laptop
Release date
December 2011
July 2008
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
1x 6-pin + 1x 8-pin
-
SLI options
-
+
Boost clock speed
925 MHz
-
Core clock speed
-
500 MHz
Floating-point performance
3,789 gflops
-
Manufacturing process technology
28 nm
65 nm
Number of transistors
4,313 million
3016 Million
Pipelines / CUDA cores
2048
224
Power consumption (TDP)
300 Watt
150 Watt
Texture fill rate
118.4
-
Memory type
GDDR5
GDDR3
Maximum RAM amount
6 GB
1 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1375 MHz
800 MHz
Memory bandwidth
264 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
-
Eyefinity
+
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
10
CUDA
-
+
Mantle
-
-
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-