Overview

HP DDR2 Memory

Models
PC2-6400 (DDR2-800) Memory DIMMs
HP 512-MB PC2-6400 (DDR2 800 MHz) DIMM	AH056AA
HP 1-GB PC2-6400 (DDR2-800) DIMM	AH058AA
HP 2-GB PC2-6400 (DDR2 800 MHz) DIMM	AH060AA

PC2-6400 (DDR2-800) Memory SODIMMs for the dc7800 Ultra-slim Desktop
HP 512-MB PC2-6400 (DDR2 800 MHz) SODIMM	GM253AA
HP 1-GB PC2-6400 (DDR2 800 MHz) SODIMM	GM254AA
HP 2-GB PC2-6400 (DDR2 800 MHz) SODIMM	GV576AA

Introduction

Maximize your Business PC performance with HP Memory. Upgrading your memory is a cost-effective way to boost your system performance without having to upgrade your processor.

A common perception is that upgrading to a faster processor will improve overall system performance, however for systems with insufficient memory, a faster processor will not result in higher overall performance. In fact, adding memory is the easiest way to boost system performance; and it's more cost effective than upgrading your processor. Random Access Memory (RAM) temporarily stores information from your operating system, and applications and data that are in current use. This allows your processor to easily access the critical information that makes your programs run. More RAM allows you to run more programs simultaneously and makes it easier to toggle between programs.

When adding memory it is important to use comparable DIMMs to those already installed. Adding faster DIMMs will increase the amount of memory but system memory will still run at the speed of the slowest DIMM.
Because of the continuous development and enhancement of high-performance software applications and operating systems, the minimum memory requirements are increasing with each new software version. Therefore, to maintain the same level of system performance, you should add more memory when you buy new software or upgrade to newer versions of software.

Dual Channel configuration
Although memory performance industry standards have improved, they lag behind the rapid increase in processor speeds and therefore have become a system bottleneck. HP Desktops feature motherboards designed with two memory channels instead of a single channel.

Dual channel memory configuration helps minimize the bottleneck by utilizing the theoretical bandwidth of two memory modules instead of one, thus reducing system latencies and significantly improving system performance.

NOTE: Dual Channel is only supported when the system is configured with DDR2 symmetric memory (i.e. 2X512).

Key Benefits

Faster start-up times with fewer delays during routine operations
More programs running simultaneously
Easy toggling between several open applications
Rigorous supplier qualification processes for ensured quality
Thoroughly tested by HP for high reliability
Competitively priced

Compatibility

See table in Technical Specifications section for compatibilities.

PC2-6400 (DDR2-800) Memory DIMMs have been qualified for use on all PC2-5300 (DDR2-667), PC2-4200 (DDR2-533) and PC2-3200 (DDR2-400) based platforms.

NOTE: Not all models are available in all regions.

Service and Support

Your Option Limited Warranty is a one (1) year (HP Option Limited Warranty Period) parts replacement warranty on any HP-branded or Compaq-branded options (HP Options). If your HP Option is installed in an HP Hardware Product, HP may provide warranty service either for the HP Option Limited Warranty Period or the remaining Limited Warranty Period of the HP Hardware Product in which the HP Option is being installed, whichever period is the longer but not to exceed three (3) years from the date you purchased the HP Option.

Technical Specifications

PC2-6400 Memory DIMMs
Kit Size	# of DIMMs	Compatibility*	Data Rate	# of Pins	Motherboard Keynotch
512 MB (AH056AA)	1	All HP Compaq Business Desktops (with the exception of the dc7800 Ultra-Slim Desktop and rp5000 Point of Sale System).	800 MHz	240	Single
1 GB (AH058AA)	1	All HP Compaq Business Desktops (with the exception of the dc7800 Ultra-Slim Desktop and rp5000 Point of Sale System).	800 MHz	240	Single
2 GB (AH060AA)	1	All HP Compaq Business Desktops (with the exception of the dc7800 Ultra-Slim Desktop and rp5000 Point of Sale System).	800 MHz	240	Single

NOTE: *Not all products available in all regions.


PC2-6400 Memory SODIMMs for the dc7800 Ultra-slim Desktop
Kit Size	# of DIMMs	Compatibility*	Data Rate	# of Pins	Motherboard Keynotch
512 MB (GM253AA)	1	HP Compaq dc7800 Ultra-slim Desktops	800 MHz	200	Single
1 GB (GM254AA)	1	HP Compaq dc7800 Ultra-slim Desktops	800 MHz	200	Single
2 GB (GV576AA)	1	HP Compaq dc7800 Ultra-slim Desktops	800 MHz	200	Single
NOTE: *Not all products available in all regions.


DDR2 Memory DIMMs	Dimensions	6.75 x 2.5 x 4.37 in ( 17.1 x 6.35 x 11.1 cm)
	Weight	1.1 oz (31.2 g)

DDR2 Memory SODIMMs	Dimensions	2.66 x 0.78 x 0.1 in (67.75 x 20 x 2.45 mm)


Operating Systems supported: Windows Vista Business 64, Windows Vista Business 32, Windows Vista Home Basic 32, Windows 2000, Windows XP Professional or Windows XP Home 32. No driver is required for this device. Native support is provided by the operating system. NOTE: Not all models available in all regions. * Certain Windows Vista product features require advanced or additional hardware. Windows Vista Upgrade Advisor can help you determine which features of Windows Vista will run on your computer. To download the tool, visit: http://www.windowsvista.com/upgradeadvisor. For Windows Vista system requirements, visit: http://www.windowsvista.com/systemrequirements.

Microsoft and Windows are US registered trademarks of Microsoft Corporation.

DA-12227 14 - Version 14 - July 1, 2008