GPU Comparison
GEFORCE
NVIDIA GeForce GTX 660
CORE STATE
GK106
VRAM
2 GB
CLOCK SPEED
1032 MHz
TDP
140 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
GeForce GTX 780 Ti
CORE STATE
GK110B
VRAM
3 GB
CLOCK SPEED
928 MHz
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660
GTX 780 Ti
Core Specs
Shading Units
960
2,880
+200.0%
Shaders
960
2,880
+200.0%
TMUs
80
240
+200.0%
ROPs
24
48
+100.0%
Clocks
Base Clock
980 MHz
875 MHz
Boost Clock
1032 MHz
928 MHz
Memory Clock
1502 MHz
6 Gbps effective
1753 MHz
7 Gbps effective
Memory
Memory Size
2 GB
3 GB
VRAM (MB)
2,048
3,072
+50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
192 bit
384 bit
Bandwidth
144.2 GB/s
336.6 GB/s
Cache
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
384 KB
1536 KB
Performance
Pixel Rate
20.64 GPixel/s
55.68 GPixel/s
Texture Rate
82.56 GTexel/s
222.7 GTexel/s
FP32 (TFLOPS)
1.981 TFLOPS
5.345 TFLOPS
FP64 (TFLOPS)
82.56 GFLOPS (1:24)
222.7 GFLOPS (1:24)
Power
TDP
140 W
250 W
TDP (W)
140
250
+78.6%
Suggested PSU
300 W
600 W
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Architecture
Architecture
Kepler
Kepler
GPU Name
GK106
GK110B
Generation
GeForce 600
GeForce 700
Process Size
28 nm
28 nm
Transistors
2,540 million
7,080 million
Die Size
221 mm²
561 mm²
Foundry
TSMC
TSMC
Density
11.5M / mm²
12.6M / mm²
API Support
DirectX
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.2.175
1.2.175
OpenCL
3.0
3.0
CUDA
3.0
3.5
Shader Model
6.5 (5.1)
6.5 (5.1)
Physical
Slot Width
Dual-slot
Dual-slot
Length
241 mm
9.5 inches
267 mm
10.5 inches
Height
—
111 mm
4.4 inches
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
229 USD
699 USD
Production
End-of-life
End-of-life
Predecessor
GeForce 500
GeForce 600
Successor
GeForce 700
GeForce 900