GeForce GTX 980 Mobile and GeForce GTX 660M Mac Edition - video card comparison
GeForce GTX 980 Mobile
GeForce GTX 660M Mac Edition
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
N16E-GXX
GK107
Market segment
Laptop
Desktop
Release date
September 2014
April 2013
Bus support
PCI Express 3.0
-
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
-
None
SLI options
+
-
Boost clock speed
1216 MHz
-
Core clock speed
1064 MHz
950 MHz
CUDA cores
2048
-
Floating-point performance
4,358 gflops
729.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
1,270 million
Pipelines / CUDA cores
2048
384
Power consumption (TDP)
100-200 Watt
50 Watt
Texture fill rate
144 billion/sec
30.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
7.0 GB/s
5000 MHz
Memory bandwidth
224 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
No outputs
Multi monitor support
4 displays
-
VGA аnalog display support
+
-
DisplayPort Multimode (DP++) support
+
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
G-SYNC support
+
-
Audio input for HDMI
Internal
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
3.0
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
6.4
5.1
Vulkan
1.1.126
1.1.126
BatteryBoost
+
-
GameStream
+
-
GameWorks
+
-
GeForce ShadowPlay
+
-
GPU Boost
2.0
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-