GeForce GTX 680MX Mac Edition vs GeForce 405M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 512MB VRAM GeForce 405M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680MX Mac Edition 's Advantages
Released 1 years and 9 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 12.80GB/s)
1520 additional rendering cores
GeForce 405M 's Advantages
Lower TDP (14W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+5564%
2209
GeForce 405M
39
Graphics Card
Oct 2012
Release Date
Jan 2011
GeForce 600M
Generation
GeForce 400M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1250 MHz
Memory Clock
800 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
12.80GB/s
Render Config
-
SM Count
2
1536
Shading Units
16
128
TMUs
8
32
ROPs
4
16 KB (per SMX)
L1 Cache
-
512 KB
L2 Cache
32 KB
Theoretical Performance
23.01 GPixel/s
Pixel Rate
2.424 GPixel/s
92.03 GTexel/s
Texture Rate
4.848 GTexel/s
2.209 TFLOPS
FP32 (float)
38.78 GFLOPS
92.03 GFLOPS
FP64 (double)
-
Board Design
122W
TDP
14W
No outputs
Outputs
No outputs
Graphics Processor
GK104
GPU Name
GT218
N13E-GTX2-A2
GPU Variant
-
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
0.26 billion
294 mm²
Die Size
57 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.2
5.1
Shader Model
4.1
