Radeon HD 7950 and GeForce GT 620 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs GeForce GT 620
Radeon HD 7950
4907
GeForce GT 620
388
Radeon HD 7950
GeForce GT 620
Architecture
GCN 1.0 (2012−2020)
Fermi (2010−2014)
GPU code name
Tahiti
GF108
Market segment
Desktop
Desktop
Release date
January 2012
May 2012
Bus support
PCIe 3.0 x16
PCI Express 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
1250 MHz
-
Compute units
28
-
Core clock speed
-
700 MHz
CUDA cores
-
96
Floating-point performance
2,867 gflops
268.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
585 million
Pipelines / CUDA cores
1792
96
Power consumption (TDP)
200 Watt
49 Watt
Maximum GPU temperature
-
98 °C
Texture fill rate
89.60
11.2 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
1250 MHz
1.8 GB/s
Memory bandwidth
240 GB/s
14.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
Dual Link DVI-I, HDMI, VGA
Multi monitor support
-
+
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
DisplayPort support
-
-
Audio input for HDMI
-
Internal
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.2
Shader Model
5.1
5.1
Vulkan
-
N/A
3D Blu-Ray
-
+
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-