This looks a great deal quick google search show's this for over $500 at Buy.com and other sellers:
Google Price Search
Great for HTPC as you can add a PCI Xpress if needed (6150 good enough for HD x264 though). Includes Vista and 1 year Warranty via HP.
A one day deal:
Woot!
Specs:
* Athlon 64 X2 (B) 5000+ 2.6 GHz (65W) base processor
* 2GB PC2-6400 MB/sec 240 pin, DDR2 SDRAM, upgradeable to 4 GB
*
* 360GB 7200 RPM SATA hard drive
* 16X DVD± R/RW 12X RAM ±R DL LightScribe SATA drive
* GeForce 6150SE nForce 430 chipset
* Available PCI Express x16 card slot for upgraded video card
* Integrated 10/100 Base-T networking and 56K bps data/fax modem
* Wireless LAN 802.11 b/g
* 15-in-1 (4 slot) memory card reader
* 6 USB 2.0 ports, 2 front and 4 in the rear
* Windows Vista Home Premium with Windows Media Center (32-bit) and Service Pack 1
Specifications:
Base processor
Athlon 64 X2 (B) 5000+ 2.6 GHz (65W) 2000 MT/s (mega transfers/second)
Socket AM2
Chipset
GeForce 6150SE nForce 430
Motherboard
Manufacturer: Asus
Motherboard Name: M2N61-AR
HP/Compaq motherboard name: Acacia-GL6E
Motherboard
Memory Installed: 2 GB
Maximum Allowed: 4 GB (2 x 2 GB)
Actual available memory may be less
Speed Supported: PC2-6400 MB/sec
Type: 240 pin, DDR2 SDRAM
Hard Drive
360 GB SATA 3G (3.0 Gb/sec)
7200 rpm
16X DVD(+/-)R/RW 12X RAM (+/-)R DL LightScribe SATA drive
DVD-RAM: Up to 12X
DVD-R DL Write Once: Up to 8X
DVD+R DL Write Once: Up to 8X
DVD+R Write Once: Up to 16X
DVD+RW Rewritable: Up to 8X
DVD-R Write Once: Up to 16X
DVD-RW Rewritable: Up to 6X
DVD ROM Read: Up to 16X
CD-R Write Once: Up to 40X
CD-RW Rewritable: Up to 32X
CD-ROM Read: Up to 40X
Modem
56K bps data/fax modem
Wireless
Wireless LAN 802.11 b/g
Video Graphics
Integrated graphics
Sound/Audio
High Definition 6-channel audio
ALC 888S chipset
Network (LAN)
Integrated 10/100 Base-T networking interface
Memory Card Reader
Supports the following cards: Compact Flash I
Compact Flash II
IBM Microdrive
Secure Digital (SD)
mini-SD
MultiMediaCard (MMC)
Reduced size MultiMediaCard (RS-MMC)
MultiMediaCard Plus (MMC plus)
MultiMediaCard Mobile (MMC mobile)
Memory Stick
Memory Stick Pro
Memory Stick Duo
Memory Stick Pro Duo
SmartMedia
xD Picture Card (xD = extreme digital)
I/O Ports on the Front Panel
15-in-1 (4 slot): One
USB: Two
Headphone: One
I/O Ports on the Back Panel
PS2 (keyboard, mouse): Two (one each)
SPDIF out (coaxial): One
VGA: One
USB: Four
1394a: One
LAN: One
Audio (line in, line out, microphone): One Each
Expansion Slots
PCI: One (None available)
PCI Express x16: One (One available)
Drive Bays
5.25": One (None available)
3.5": One (None available)
Pocket Media Drive: One (One available)
Operating System
Windows Vista Home Premium with Windows Media Center (32-bit) with Service Pack 1
In the box:
* HP Pavilion s3401f Desktop PC
* Keyboard
* Mouse
* Power Cable
* Phone Cable
* Wireless Antenna

