GeForce GTX 660 and Radeon R7 265 - video card comparison
GeForce GTX 660
Radeon R7 265
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK106
Pitcairn
Market segment
Desktop
Desktop
Release date
September 2012
February 2014
Bus support
PCI Express 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
1 x 6-pin
SLI options
+
-
Boost clock speed
1033 MHz
925 MHz
Core clock speed
980 MHz
-
CUDA cores
960
-
Floating-point performance
1,981 gflops
1,894 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
2,800 million
Pipelines / CUDA cores
960
1024
Power consumption (TDP)
140 Watt
150 Watt
Texture fill rate
78.4 billion/sec
59.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
1400 MHz
Memory bandwidth
144.2 GB/s
179.2 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support
4 displays
-
Eyefinity
-
1
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
DisplayPort support
-
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
DirectX® 12
CUDA
+
-
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.3
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
-
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
AppAcceleration
-
-
CrossFire
-
1
DDMA audio
-
+
Enduro
-
-
FreeSync
-
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-