NVIDIA GeForce GTX 660 Ti vs NVIDIA GeForce GTX 780 Ti Engineering Sample
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Unknown
Generation
GeForce 600
GeForce 700
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
915 MHz
875 MHz
Boost Clock
980 MHz
928 MHz
Memory Clock
1502 MHz
1753 MHz
Memory
Memory Size
2GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
384bit
Bandwidth
144.2GB/s
336.6GB/s
Render Config
Shading Units
1344
2880
TMUs
112
240
ROPs
24
48
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
384 KB
1536 KB
Theoretical Performance
Pixel Rate
27.44 GPixel/s
55.68 GPixel/s
Texture Rate
109.8 GTexel/s
222.7 GTexel/s
FP32 (float)
2.634 TFLOPS
5.345 TFLOPS
FP64 (double)
109.8 GFLOPS
222.7 GFLOPS
Graphics Processor
GPU Name
GK104
GK180
GPU Variant
GK104-300-KD-A2
GK180-425-A1
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
7.08 billion
Die Size
294 mm²
561 mm²
Board Design
TDP
150W
250W
Suggested PSU
450 W
600 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.2.175
CUDA
3.0
3.5
Shader Model
5.1
5.1