Radeon R9 M385X and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon R9 M385X vs GeForce GT 640M
Radeon R9 M385X
2053
GeForce GT 640M
946
Radeon R9 M385X
GeForce GT 640M
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Strato-XT-M3
N13P-GS
Market segment
Laptop
Laptop
Release date
June 2015
March 2012
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Boost clock speed
1100 MHz
645 MHz
Core clock speed
1100 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
1,971 gflops
480.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,080 million
1,270 million
Pipelines / CUDA cores
896
384
Power consumption (TDP)
-
32 Watt
Texture fill rate
61.60
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
1500 MHz
1800 - 4000 MHz
Memory bandwidth
76.8 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
DirectX® 12
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
6.3
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-