Radeon R7 240 and GeForce GTX 660M Mac Edition - video card comparison
Radeon R7 240
GeForce GTX 660M Mac Edition
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Oland
GK107
Market segment
Desktop
Desktop
Release date
October 2013
April 2013
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x8
MXM-B (3.0)
Supplementary power connectors
N/A
None
Boost clock speed
780 MHz
-
Core clock speed
-
950 MHz
Floating-point performance
499.2 gflops
729.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
950 million
1,270 million
Pipelines / CUDA cores
320
384
Power consumption (TDP)
50 Watt
50 Watt
Texture fill rate
14.00
30.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1150 MHz
5000 MHz
Memory bandwidth
72 GB/s
80 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
12 (11_0)
CUDA
-
3.0
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-