Radeon R9 M290X and GeForce GTX 660M - video card comparison
Passmark - benchmark score Radeon R9 M290X vs GeForce GTX 660M
Radeon R9 M290X
3360
GeForce GTX 660M
1478
Radeon R9 M290X
GeForce GTX 660M
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Neptune
N13E-GE
Market segment
Laptop
Laptop
Release date
January 2014
March 2012
Bus support
PCIe 3.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
None
-
SLI options
-
+
Boost clock speed
900 MHz
950 MHz
Compute units
20
-
Core clock speed
850 MHz
835 MHz
CUDA cores
-
384
Floating-point performance
2,304 gflops
729.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
1,270 million
Pipelines / CUDA cores
1280
384
Power consumption (TDP)
100 Watt
50 Watt
Texture fill rate
72.00
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
1200 MHz
2000 MHz
Memory bandwidth
153.6 GB/s
64.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
DirectX® 11
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
5.1
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-