NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GT 445M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M 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
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Released 2 years and 5 months late
240 additional rendering cores
Lower TDP (32W vs 35W)
NVIDIA GeForce GT 445M 's Advantages
More VRAM (1024GB vs 512GB)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+74%
0.572 TFLOPS
GeForce GT 445M
0.328 TFLOPS
Graphics Card
Feb 2013
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
512MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
128bit
40.00GB/s
Bandwidth
40.00GB/s
Render Config
-
-
-
-
SM Count
3
384
Shading Units
144
32
TMUs
24
8
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
128 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
3.420 GPixel/s
23.84 GTexel/s
Texture Rate
13.68 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
328.3 GFLOPS
23.84 GFLOPS
FP64 (double)
27.36 GFLOPS
Board Design
32W
TDP
35W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GF106
N13P-GS
GPU Variant
N11E-GE-A1
Kepler
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
1.17 billion
118 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
