Radeon HD 7850 and GeForce GTX 660 Ti - video card comparison
Passmark - benchmark score Radeon HD 7850 vs GeForce GTX 660 Ti
Radeon HD 7850
3976
GeForce GTX 660 Ti
4547
Radeon HD 7850
GeForce GTX 660 Ti
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Pitcairn
GK104
Market segment
Desktop
Desktop
Release date
March 2012
August 2012
Bus support
PCIe 2.1 x16
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
Two 6-pin
SLI options
-
+
Boost clock speed
1000 MHz
980 MHz
Core clock speed
-
915 MHz
CUDA cores
-
1344
Floating-point performance
1,761 gflops
2,459.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
3,540 million
Pipelines / CUDA cores
1024
1344
Power consumption (TDP)
130 Watt
150 Watt
Texture fill rate
55.04
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
1200 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
1
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
DisplayPort support
-
-
Audio input for HDMI
-
Internal
DirectX
12
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
+
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-