Radeon HD 7950 and GeForce GT 620M - video card comparison
Passmark - benchmark score Radeon HD 7950 vs GeForce GT 620M
Radeon HD 7950
4907
GeForce GT 620M
447
Radeon HD 7950
GeForce GT 620M
Architecture
GCN 1.0 (2012−2020)
Fermi (2010−2014)
GPU code name
Tahiti
N13P-GLP / N13M-GS
Market segment
Desktop
Laptop
Release date
January 2012
March 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
-
Boost clock speed
1250 MHz
715 MHz
Compute units
28
-
Core clock speed
-
Up to 625 MHz
CUDA cores
-
96
Floating-point performance
2,867 gflops
253.4 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
15 Watt
Texture fill rate
89.60
Up to 10.0 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
Up to 128bit
Memory clock speed
1250 MHz
1800 MHz
Memory bandwidth
240 GB/s
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DisplayPort support
-
-
DirectX
DirectX® 11
12 API
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
-
N/A
3D Blu-Ray
-
+
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
Optimus
-
+
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-