GeForce GTX 680MX Mac Edition vs GeForce GT 445M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 1024MB VRAM GeForce GT 445M 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 2 years and 1 months late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 40.00GB/s)
1392 additional rendering cores
GeForce GT 445M 's Advantages
Lower TDP (35W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+573%
2209
GeForce GT 445M
328
Graphics Card
Oct 2012
Release Date
Sep 2010
GeForce 600M
Generation
GeForce 400M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1250 MHz
Memory Clock
625 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
40.00GB/s
Render Config
-
SM Count
3
1536
Shading Units
144
128
TMUs
24
32
ROPs
16
16 KB (per SMX)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
256 KB
Theoretical Performance
23.01 GPixel/s
Pixel Rate
3.420 GPixel/s
92.03 GTexel/s
Texture Rate
13.68 GTexel/s
2.209 TFLOPS
FP32 (float)
328.3 GFLOPS
92.03 GFLOPS
FP64 (double)
27.36 GFLOPS
Board Design
122W
TDP
35W
No outputs
Outputs
No outputs
Graphics Processor
GK104
GPU Name
GF106
N13E-GTX2-A2
GPU Variant
N11E-GE-A1
Kepler
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
1.17 billion
294 mm²
Die Size
238 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
