GeForce GT 640M Mac Edition vs GeForce GT 740A
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 2GB VRAM GeForce GT 740A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GT 640M Mac Edition 's Advantages
Larger VRAM bandwidth (40.00GB/s vs 14.40GB/s)
Lower TDP (32W vs 33W)
GeForce GT 740A 's Advantages
Released 6 months late
More VRAM (2GB vs 512GB)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
572
GeForce GT 740A
+31%
753
Graphics Card
Feb 2013
Release Date
Aug 2013
GeForce 600M
Generation
GeForce 700A
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
14.40GB/s
Render Config
384
Shading Units
384
32
TMUs
32
8
ROPs
8
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
512 KB
Theoretical Performance
5.960 GPixel/s
Pixel Rate
7.840 GPixel/s
23.84 GTexel/s
Texture Rate
31.36 GTexel/s
572.2 GFLOPS
FP32 (float)
752.6 GFLOPS
23.84 GFLOPS
FP64 (double)
31.36 GFLOPS
Board Design
32W
TDP
33W
No outputs
Outputs
No outputs
Graphics Processor
GK107
GPU Name
GK208
N13P-GS
GPU Variant
GT 740M
Kepler
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.02 billion
118 mm²
Die Size
87 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.5
5.1
Shader Model
5.1
