NVIDIA GeForce GT 640M LE vs NVIDIA GeForce GTX 675MX Mac Full Specs

Summary

96 Shaders 762MHz	960 Shaders 719MHz
1GB GDDR550.1GB/s	1GB GDDR5160GB/s
Peak·FP32·FP16 96 GFLOPS	Peak·FP32·FP16 1.38 TFLOPS
Form Factor Soldered	Form Factor Soldered
TDP 32W	TDP 100W

Theoretical Performance

Clock Speed762MHz UC·Base·Boost·OC	Clock Speed719MHz UC·Boost·OC
Peak OPS 96 GFLOPSFP32	Peak OPS 1.38 TFLOPSFP32
FP32 96 GFLOPS	FP32 1.38 TFLOPS
FP64 8 GFLOPS	FP64 57.52 GFLOPS
Pixel Rate 2 GPixel/s	Pixel Rate 23 GPixel/s
Texture Rate 8 GTexel/s	Texture Rate 57.5 GTexel/s

Core Config

Shaders 96 Shaders	Shaders 960 Shaders
TMUs 16 TMUs	TMUs 80 TMUs
ROPs 4 ROPs	ROPs 32 ROPs
SMs 2 SMs	SMs 5 SMs

Clocks

Base Clock 762MHz	Base Clock -
Boost Clock 762MHz	Boost Clock 719MHz
Shader Clock 500MHz	Shader Clock -

Cache

L2 Cache 256KB shared

L2 Cache 512KB shared

Memory

1GB GDDR5	1GB GDDR5
Memory Bus 128-bit	Memory Bus 256-bit
Memory Speed 3.1GT/s	Memory Speed 5GT/s
Memory Bandwidth 50.1GB/s	Memory Bandwidth 160GB/s
ECC No	ECC No

Power & Thermals

TDP 32W

TDP 100W

Video Output

Multi-Monitor 2

Multi-Monitor 2

Encoder

-	Encoder Model NVENC 1
Codec -	Codec AVC (H.264)

Decoder

Decoder Model VP4	Decoder Model NVDEC 1
Codec -	Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)

Card

Form Factor Soldered

Form Factor Soldered

Chip

Manufacturer NVIDIA	Manufacturer NVIDIA
Chip Designer NVIDIA	Chip Designer NVIDIA
Architecture Fermi	Architecture Kepler
Family GeForce 600	Family GeForce 600
Branding	Branding
Codename NVC1	Codename NVE4
Chip Variant -	Chip Variant GK104-200-KD-A2
Market Segment Laptop	Market Segment Laptop
Release Date Mar 22, 2012	Release Date Oct 1, 2012

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 40nm	Fabrication Node 28nm
Die Size 116mm²	Die Size 294mm²
Transistor Count 585 Million	Transistor Count 3.5 Billion
Transistor Density 5.04 MTr/mm²	Transistor Density 12.04 MTr/mm²

Images