Radeon HD 7870 and GeForce GTX 660 Ti - video card comparison
Passmark - benchmark score Radeon HD 7870 vs GeForce GTX 660 Ti
Radeon HD 7870
4779
GeForce GTX 660 Ti
4547
Radeon HD 7870
GeForce GTX 660 Ti
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Pitcairn XT
GK104
Market segment
Desktop
Desktop
Release date
March 2012
August 2012
Bus support
-
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
Two 6-pin
SLI options
-
+
Boost clock speed
-
980 MHz
Core clock speed
1000 MHz
915 MHz
CUDA cores
-
1344
Floating-point performance
-
2,459.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2800 Million
3,540 million
Pipelines / CUDA cores
1280
1344
Power consumption (TDP)
175 Watt
150 Watt
Texture fill rate
80.00
102.5 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
192-bit GDDR5
Memory clock speed
4800 MHz
6.0 GB/s
Memory bandwidth
153.6 GB/s
144.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support
-
4 displays
Eyefinity
+
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 (11_1)
12 (11_0)
CUDA
-
+
OpenCL
1.2
1.2
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+