1) System specifications provided by HP will show how much memory can be run likely 2-4gb maximum for that model. This is what is seen at HP.
Memory
Component Attributes Memory Installed1 GB (2 x 512)Maximum allowed2 GB (2 x 1GB) requires the replacement of the installed 512 MB DIMMsSpeed supportedPC3200 MB/sec Type184 pin, DDR SDRAMDIMM slotsTwoOpen DIMM slotsNone
Hard drive
8x DVD+R/RW DL drive
(must use Double-Layer media discs in order to take advantage of the DL technology)
type Attributes DVD+R DL Write Once2.4XDVD+R Write Once8XDVD+RW Rewritable4XDVD ROM Read12XCD-R Write Once24XCD-RW Rewritable10XCD-ROM Read40X
CD-ROM drive
Maximum speed: 48X
Modem
PCI K56flex data/fax modem
Video graphics
Integrated with up to 64 MB allocated video memory
Sound/audio
- Controller: AC97 audio
- Location: Integrated
Network (LAN)
Integrated 10/100 Base-T networking interface
Memory card reader
- USB interface
- Supports the following cards:
- Compact Flash I
- Compact Flash II
- SmartMedia
- Memory Stick
- Memory Stick Pro
- MultiMediaCard
- Secure Digital (SD)
- Micro Drive
- XD Picture Card (xD = extreme digital)
External I/O ports
I/O ports on the front panel
Port type Quantity 9-in-1 (4 slot) + 1 USBOneIEEE 1394One USB (2.0)TwoHeadphoneOne Line-inOne MicrophoneOne
I/O ports on the back panel
Port type Quantity PS/2 (keyboard, mouse)Two (one each)VGA (monitor)One ParallelOne SerialOne USB (2.0)FourIEEE 1394OneLANOne AudioOne each (line-in, line-out, microphone)
Expansion slots (total)
Slot type Quantity PCIThree (two available) AGPOne (available) DIMMTwo (occupied)
Drive bays (total)
Bay type Quantity 5.25-inch, externalTwo (occupied) 3.5-inch, externalTwo (one available)
Keyboard and mouse
- HP PS/2 internet keyboard
- HP PS/2 optical mouse
- Quebec Keyboard Kit (French Canada only)
Software
NOTE: HP provides basic support for software that comes with the computer. For in-depth feature assistance, refer to the help section in the software or on the software vendor's Web site.
Key to software:
- cd/dvd = media included in box
- fc = only available in French Canada
- nfc = not available in French Canada
Software titles that shipped with PC Software Category Software Title Operating System
- Microsoft Windows XP Home Edition
- Microsoft Service Packs
CD/CD-RW/DVD/DVD+RW
- WinDVD 5 Player Basic (with optional 5.1 upgrade)
- RecordNow 7.2
Education and Reference
- Encarta Encyclopedia 2004 Standard (cd/dvd) (fc)
- MSN Encarta Standard (nfc)
Entertainment, Music, and Games
- iTunes 4.5 (w/Quicktime)
- Microsoft Plus Digital Media Edition LE (nfc)
- Real player
- Wild Tangent game channel (nfc)
- HP Music icon (nfc)
Imaging, Photography, Video, and Film
- HP Image Zone Plus 4
- Muvee autoProducer 3.5MX (nfc)
Productivity and Finance
- Office 2003 Trial HTML page launcher
- Adobe Reader
- Microsoft Works 7.0 w/Office Student and Teacher Edition 2003 Trial & Money 2004 combo CD (cd/dvd) (nfc)
- Microsoft Works 7.0 w/Office Student and Teacher Edition 2003 Trial (cd/dvd) (fc)
- Quicken New User Edition 2004 (nfc)
PC Security
- InterMuteWeb Privacy & Protection Suite (nfc)
- Norton AntiVirus 2004 (60-day antivirus subscription)
- Norton Personal Firewall 2004 (60-day security update subscription)
Utility, Maintenance, and Performance
- IntelliMover Data Transfer demo (nfc)
- HP organize (nfc)
- SkyDesk @Backup (nfc)
- PC-Doctor
- PC Tuneup & Repair HTML page (nfc)
- Serial ATA RAID monitoring utility (nfc)
- HP Total Care icon & HTML page
HP Recovery
- Microsoft system restore
- Recovery software suite
- Software repair wizard
Service and Support
- Backweb client
- Help & support center/HP instant support (nfc)
- Help & support center (fc)
- Safety and comfort guide
- Desktop Web-based registration
ISP Signup
- Easy Internet Signup
- DigiTerra (nfc)
- Earthlink (nfc)
- MSN 9.0 (nfc)
- Aliant
- AOL Broadband
- AOL
- Earthlink Broadband (US)
- Netscape Online (fc)
Warranty
Standard warranty included with purchase Warranty type Warranty duration Hardware Parts and LaborOne year from date of purchaseTechnical Telephone AssistanceOne year from date of purchase
24 hour/7 days a weekSoftware Application Support90 days
24 hour/7 days a weekSoftware Media Replacement90 days (on media shipped in box from factory)Self Repair Kits (express parts program)One year from date of purchaseReturn to HP or to an Authorized Service ProviderOne year from date of purchase
Still not finding what you're looking for?
http://h10025.www1.hp.com/ewfrf/wc/...n&product=441568&rule=37065&dest_page=product
2) There are vaious brands as well as types as far as timings. Generally on a prebuilt system the memory it comes with is a value ram. How the system is used will depend on the type whether value or performance memory where you generally choose a good name brand when seen onsale or simply priced lower.
3) The memory standard is the main thing to go by since a faster memory will be slowed down to that speed. Boards usually see 2 or 3 speeds supported. For a board that sees a DDR2 800 standard you might see 533, 667, and 800 while being able to run 1066 on some boards. For that model you may be able to run PC3400 433 or PC4000 533 but see that slowed to 400mhz.