GeForce GTX 660 OEM and Radeon R7 260X - video card comparison
GeForce GTX 660 OEM
Radeon R7 260X
Architecture
Kepler (2012−2018)
GCN 2.0 (2013−2017)
GPU code name
GK104
Bonaire
Market segment
Desktop
Desktop
Release date
August 2012
October 2013
Bus support
-
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
1 x 6-pin
Boost clock speed
888 MHz
1000 MHz
Core clock speed
823 MHz
-
Floating-point performance
2,046 gflops
1,971 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
2,080 million
Pipelines / CUDA cores
1152
896
Power consumption (TDP)
130 Watt
115 Watt
Texture fill rate
85.25
61.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5600 MHz
-
Memory bandwidth
179.2 GB/s
104 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
-
1
HDMI
+
+
DisplayPort support
-
-
DirectX
12 (11_0)
DirectX® 12
CUDA
3.0
-
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.1.126
-
AppAcceleration
-
-
DDMA audio
-
+
Enduro
-
-
FreeSync
-
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-