Radeon HD 7870 XT and GeForce GTX 660 Ti - video card comparison
Passmark - benchmark score Radeon HD 7870 XT vs GeForce GTX 660 Ti
Radeon HD 7870 XT
4603
GeForce GTX 660 Ti
4547
Radeon HD 7870 XT
GeForce GTX 660 Ti
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Tahiti
GK104
Market segment
Desktop
Desktop
Release date
November 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
975 MHz
980 MHz
Core clock speed
925 MHz
915 MHz
CUDA cores
-
1344
Floating-point performance
2,995 gflops
2,459.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
3,540 million
Pipelines / CUDA cores
1536
1344
Power consumption (TDP)
185 Watt
150 Watt
Texture fill rate
93.60
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
6000 MHz
6.0 GB/s
Memory bandwidth
192.0 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
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
-
+