GeForce GTX 680 Mac Edition vs GeForce GTX 660
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 Mac Edition and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680 Mac Edition 's Advantages
Released 7 months late
Boost Clock has increased by 3% (1058MHz vs 1032MHz)
Larger VRAM bandwidth (192.3GB/s vs 144.2GB/s)
576 additional rendering cores
GeForce GTX 660 's Advantages
Lower TDP (140W vs 195W)
Score
Benchmark
FP32 (float)
GeForce GTX 680 Mac Edition
+64%
3250
GeForce GTX 660
1981
Graphics Card
Apr 2013
Release Date
Sep 2012
GeForce 600
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1006 MHz
Base Clock
980 MHz
1058 MHz
Boost Clock
1032 MHz
1502 MHz
Memory Clock
1502 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
192.3GB/s
Bandwidth
144.2GB/s
Render Config
1536
Shading Units
960
128
TMUs
80
32
ROPs
24
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
384 KB
Theoretical Performance
33.86 GPixel/s
Pixel Rate
20.64 GPixel/s
135.4 GTexel/s
Texture Rate
82.56 GTexel/s
3.250 TFLOPS
FP32 (float)
1.981 TFLOPS
135.4 GFLOPS
FP64 (double)
82.56 GFLOPS
Board Design
195W
TDP
140W
450 W
Suggested PSU
300 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
GK104
GPU Name
GK106
GK104-400-A2
GPU Variant
GK106-400-A1
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
2.54 billion
294 mm²
Die Size
221 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.0
5.1
Shader Model
5.1
