NVIDIA GeForce GTX 660 vs NVIDIA GeForce GTX 680M
GPU Specs Compare
Graphics Card
Release Date
Sep 2012
Jun 2012
Generation
GeForce 600
GeForce 600M
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
980 MHz
719 MHz
Boost Clock
1032 MHz
758 MHz
Memory Clock
1502 MHz
900 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
144.2GB/s
115.2GB/s
Render Config
Shading Units
960
1344
TMUs
80
112
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
384 KB
512 KB
Theoretical Performance
Pixel Rate
20.64 GPixel/s
21.22 GPixel/s
Texture Rate
82.56 GTexel/s
84.90 GTexel/s
FP32 (float)
1.981 TFLOPS
2.038 TFLOPS
FP64 (double)
82.56 GFLOPS
84.90 GFLOPS
Graphics Processor
GPU Name
GK106
GK104
GPU Variant
GK106-400-A1
N13E-GTX-A2
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.54 billion
3.54 billion
Die Size
221 mm²
294 mm²
Board Design
TDP
140W
100W
Suggested PSU
300 W
-
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.1
CUDA
3.0
3.0
Shader Model
5.1
5.1
📊 Benchmark
3DMark Time Spy
1,194
-
3DMark Time Spy Extreme
260
-
OctaneBench
27
-
Blender
111
189