GeForce GTX 660 and Radeon R7 250X - video card comparison
Passmark - benchmark score GeForce GTX 660 vs Radeon R7 250X
GeForce GTX 660
4119
Radeon R7 250X
2336
GeForce GTX 660
Radeon R7 250X
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK106
Cape Verde
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
1000 MHz
Core clock speed
980 MHz
-
CUDA cores
960
-
Floating-point performance
1,981 gflops
1,216 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
1,500 million
Pipelines / CUDA cores
960
640
Power consumption (TDP)
140 Watt
80 Watt
Texture fill rate
78.4 billion/sec
38.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
1625 MHz
Memory bandwidth
144.2 GB/s
96 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
1x DVI, 1x HDMI, 2x mini-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
-
-