NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce GTX 950
GPU · Specs Compare
Graphics Card
Release Date
Sep 2014
Aug 2015
Generation
GeForce 600
GeForce 900
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
980 MHz
1024 MHz
Boost Clock
1032 MHz
1188 MHz
Memory Clock
1502 MHz
1653 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
128bit
Bandwidth
144.2GB/s
105.8GB/s
Render Config
Shading Units
960
768
TMUs
80
48
ROPs
24
32
L1 Cache
16 KB (per SMX)
48 KB (per SMM)
L2 Cache
384 KB
1024 KB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
38.02 GPixel/s
Texture Rate
82.56 GTexel/s
57.02 GTexel/s
FP32 (float)
1.981 TFLOPS
1.825 TFLOPS
FP64 (double)
82.56 GFLOPS
57.02 GFLOPS
Graphics Processor
GPU Name
GK104
GM206
Architecture
Kepler
Maxwell 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
2.94 billion
Die Size
294 mm²
228 mm²
GPU Variant
—
GM206-250-A1
Board Design
TDP
140W
90W
Suggested PSU
300 W
250 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 2.03x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 6-pin
Graphics Features
DirectX
12 (11_0)
12 (12_1)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.3
CUDA
3.0
5.2
Shader Model
5.1
6.4
Benchmark
3DMark Time Spy
—
1,903
3DMark Time Spy Extreme
—
396
▲ Specs Compare
Data sourced from official specifications and benchmark tests.