Radeon HD 7950 and GeForce 840M - video card comparison
Passmark - benchmark score Radeon HD 7950 vs GeForce 840M
Radeon HD 7950
4907
GeForce 840M
1121
Radeon HD 7950
GeForce 840M
Architecture
GCN 1.0 (2012−2020)
Maxwell (2014−2018)
GPU code name
Tahiti
N15S-GT
Market segment
Desktop
Laptop
Release date
January 2012
March 2014
Bus support
PCIe 3.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
-
Boost clock speed
1250 MHz
1124 MHz
Compute units
28
-
Core clock speed
-
1029 MHz
Floating-point performance
2,867 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
-
Pipelines / CUDA cores
1792
384
Power consumption (TDP)
200 Watt
33 Watt
Texture fill rate
89.60
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
1250 MHz
2000 MHz
Memory bandwidth
240 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
-
1.1.126
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
GameWorks
-
+
GPU Boost
-
2.0
HD3D
-
-
Optimus
-
+
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-