Radeon R9 M385X and GeForce 840M - video card comparison
Passmark - benchmark score Radeon R9 M385X vs GeForce 840M
Radeon R9 M385X
2053
GeForce 840M
1121
Radeon R9 M385X
GeForce 840M
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Strato-XT-M3
N15S-GT
Market segment
Laptop
Laptop
Release date
June 2015
March 2014
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
1100 MHz
1124 MHz
Core clock speed
1100 MHz
1029 MHz
Floating-point performance
1,971 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,080 million
-
Pipelines / CUDA cores
896
384
Power consumption (TDP)
-
33 Watt
Texture fill rate
61.60
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1500 MHz
2000 MHz
Memory bandwidth
76.8 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
DirectX
DirectX® 12
12 (11_0)
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.5
Shader Model
6.3
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
GameWorks
-
+
GPU Boost
-
2.0
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-