GeForce GTX 660 Ti and Radeon HD 6770 - video card comparison
Passmark - benchmark score GeForce GTX 660 Ti vs Radeon HD 6770
GeForce GTX 660 Ti
4547
Radeon HD 6770
1286
GeForce GTX 660 Ti
Radeon HD 6770
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK104
Juniper
Market segment
Desktop
Desktop
Release date
August 2012
January 2011
Bus support
PCI Express 3.0
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
Two 6-pin
1x 6-pin
SLI options
+
-
Boost clock speed
980 MHz
900 MHz
Core clock speed
915 MHz
-
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
1,360.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
1,040 million
Pipelines / CUDA cores
1344
800
Power consumption (TDP)
150 Watt
108 Watt
Texture fill rate
102.5 billion/sec
34.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
192-bit GDDR5
128 Bit
Memory clock speed
6.0 GB/s
1050 MHz
Memory bandwidth
144.2 GB/s
76.8 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
2x 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® 11
CUDA
+
-
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.3
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
-
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-