GeForce GTX 660 OEM and Radeon R7 240 - video card comparison
GeForce GTX 660 OEM
Radeon R7 240
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK104
Oland
Market segment
Desktop
Desktop
Release date
August 2012
October 2013
Bus support
-
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
N/A
Boost clock speed
888 MHz
780 MHz
Core clock speed
823 MHz
-
Floating-point performance
2,046 gflops
499.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
950 million
Pipelines / CUDA cores
1152
320
Power consumption (TDP)
130 Watt
50 Watt
Texture fill rate
85.25
14.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5600 MHz
1150 MHz
Memory bandwidth
179.2 GB/s
72 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DisplayPort support
-
-
DirectX
12 (11_0)
DirectX® 12
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
-
-