NVIDIA GeForce GT 640M LE vs NVIDIA GeForce GT 640M Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640M LE 's Advantages
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (50.24GB/s vs 40.00GB/s)
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Released 9 months late
288 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640M LE
0.289 TFLOPS
GeForce GT 640M Mac Edition
+97%
0.572 TFLOPS
Graphics Card
May 2012
Release Date
Feb 2013
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
785 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
64bit
50.24GB/s
Bandwidth
40.00GB/s
Render Config
-
-
-
2
SM Count
-
96
Shading Units
384
16
TMUs
32
4
ROPs
8
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
3.012 GPixel/s
Pixel Rate
5.960 GPixel/s
12.05 GTexel/s
Texture Rate
23.84 GTexel/s
-
-
-
289.0 GFLOPS
FP32 (float)
572.2 GFLOPS
24.08 GFLOPS
FP64 (double)
23.84 GFLOPS
Board Design
32W
TDP
32W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF108
GPU Name
GK107
-
GPU Variant
N13P-GS
Fermi
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.585 billion
Transistors
1.27 billion
116 mm²
Die Size
118 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
2.1
CUDA
3.0
5.1
Shader Model
5.1
