GeForce GTX 660 and Radeon R9 270 - video card comparison
Passmark - benchmark score GeForce GTX 660 vs Radeon R9 270
GeForce GTX 660
4119
Radeon R9 270
4435
GeForce GTX 660
Radeon R9 270
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK106
Curacao
Market segment
Desktop
Desktop
Release date
September 2012
November 2013
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
2,368 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
2,800 million
Pipelines / CUDA cores
960
1280
Power consumption (TDP)
140 Watt
150 Watt
Texture fill rate
78.4 billion/sec
74.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
-
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
-
+
LiquidVR
-
1
PowerTune
-
-
TressFX
-
1
TrueAudio
-
+
UVD
-
+
ZeroCore
-
-