GeForce GT 640M vs HD Graphics 4000 (Ivy Bridge GT2)

GeForce GT 640M Memory: 2048Mb DDR3MOBILE Release date: 22 Mar 2012

HD Graphics 4000 (Ivy Bridge GT2) Memory: 0Mb System SharedDESKTOP Release date: 14 May 2012

Summary

Reasons to consider GeForce GT 640M

Higher theoretical gaming performance, based on specifications.

Supports PhysX

Supports G-Sync

Supports ShadowPlay (allows game streaming/recording with minimum performance penalty)

Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

Reasons to consider HD Graphics 4000 (Ivy Bridge GT2)

GeForce GT 640M

HWBench recommends GeForce GT 640M

Based on theoretical specifications.

Specifications

Core Configuration

	GeForce GT 640M		HD Graphics 4000 (Ivy Bridge GT2)
GPU Name	GK107 (N13P-GS)	vs	Ivy Bridge GT2 ()
Fab Process	28 nm	vs	22 nm
Die Size	118 mmÂ²	vs	160 mmÂ²
Transistors	1,270 million	vs	392 million
Shaders	384	vs	16
Compute Units	2	vs	0
Core clock	625 MHz	vs	650 MHz
ROPs	16	vs	4
TMUs	32	vs	4

Memory Configuration

	GeForce GT 640M		HD Graphics 4000 (Ivy Bridge GT2)
Memory Type	DDR3	vs	System Shared
Bus Width	128 bit	vs	System Shared
Memory Speed	900 MHz 1800 MHz effective	vs	System Shared
Memory Size	2048 Mb	vs	0 Mb

Additional details

	GeForce GT 640M		HD Graphics 4000 (Ivy Bridge GT2)
TDP	32 watts	vs	0 watts
Release Date	22 Mar 2012	vs	14 May 2012

Raw Performance comparison

Pixel Rate

GeForce GT 640M
5.00 GP/s
HD Graphics 4000 (Ivy Bridge GT2)
2.60 GP/s

GigaPixels - higher is better

Texel Rate

GeForce GT 640M
20.00 GT/s
HD Graphics 4000 (Ivy Bridge GT2)
2.60 GT/s

GigaTexels - higher is better

Memory bandwidth

GeForce GT 640M
28.80 GB/s
HD Graphics 4000 (Ivy Bridge GT2)
0.00 GB/s

GB/s - higher is better

Single precision performance

GeForce GT 640M
480.00 GFLOPs
HD Graphics 4000 (Ivy Bridge GT2)
20.80 GFLOPs

GFLOPs - higher is better

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