Radeon HD 7850 and GeForce 840M - video card comparison
Passmark - benchmark score Radeon HD 7850 vs GeForce 840M
Radeon HD 7850
3976
GeForce 840M
1121
Radeon HD 7850
GeForce 840M
Architecture
GCN 1.0 (2012−2020)
Maxwell (2014−2018)
GPU code name
Pitcairn
N15S-GT
Market segment
Desktop
Laptop
Release date
March 2012
March 2014
Bus support
PCIe 2.1 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
-
Boost clock speed
1000 MHz
1124 MHz
Core clock speed
-
1029 MHz
Floating-point performance
1,761 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
-
Pipelines / CUDA cores
1024
384
Power consumption (TDP)
130 Watt
33 Watt
Texture fill rate
55.04
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1200 MHz
2000 MHz
Memory bandwidth
153.6 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
12
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
-
-