GeForce GT 640M Mac Edition vs GeForce GT 540M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM GeForce GT 540M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GT 640M Mac Edition 's Advantages
Released 2 years and 1 months late
Larger VRAM bandwidth (40.00GB/s vs 28.80GB/s)
288 additional rendering cores
Lower TDP (32W vs 35W)
GeForce GT 540M 's Advantages
More VRAM (1024GB vs 512GB)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+121%
572
GeForce GT 540M
258
Graphics Card
Feb 2013
Release Date
Jan 2011
GeForce 600M
Generation
GeForce 500M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-A (3.0)
Clock Speeds
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
128bit
40.00GB/s
Bandwidth
28.80GB/s
Render Config
-
SM Count
2
384
Shading Units
96
32
TMUs
16
8
ROPs
4
16 KB (per SMX)
L1 Cache
64 KB (per SM)
128 KB
L2 Cache
256 KB
Theoretical Performance
5.960 GPixel/s
Pixel Rate
2.688 GPixel/s
23.84 GTexel/s
Texture Rate
10.75 GTexel/s
572.2 GFLOPS
FP32 (float)
258.0 GFLOPS
23.84 GFLOPS
FP64 (double)
21.50 GFLOPS
Board Design
32W
TDP
35W
No outputs
Outputs
No outputs
Graphics Processor
GK107
GPU Name
GF108
N13P-GS
GPU Variant
N12P-GS-A1
Kepler
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.585 billion
118 mm²
Die Size
116 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
