Radeon HD 7970 and GeForce GTX 650 - video card comparison
Passmark - benchmark score Radeon HD 7970 vs GeForce GTX 650
Radeon HD 7970
5405
GeForce GTX 650
1801
Radeon HD 7970
GeForce GTX 650
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Tahiti XT
GK107
Market segment
Desktop
Desktop
Release date
December 2011
September 2012
Bus support
PCIe 2.1 x16
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
One 6-pin
Boost clock speed
925 MHz
-
Core clock speed
-
1058 MHz
CUDA cores
-
384
Floating-point performance
3,789 gflops
812.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
1,270 million
Pipelines / CUDA cores
2048
384
Power consumption (TDP)
300 Watt
64 Watt
Texture fill rate
118.4
33.9 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
2 GB
Memory bus width
384 Bit
128-bit GDDR5
Memory clock speed
1375 MHz
5.0 GB/s
Memory bandwidth
264 GB/s
80.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
One Dual Link DVI-I, One Dual Link DVI-D, One Mini HDMI
Multi monitor support
-
4 displays
Eyefinity
+
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
DisplayPort support
-
-
Audio input for HDMI
-
Internal
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-