Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Xserve
Table title:
Intel Xserve
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Component </th><th colspan=1 rowspan=1 > Xserve (Late 2006) </th><th colspan=1 rowspan=1 > Xserve (Early 2008) </th><th colspan=1 rowspan=1 > Xserve (Early 2009) </th></tr>
<tr> <th colspan=1 rowspan=1 > Release date </th><td colspan=1 rowspan=1 > August 7, 2006 </td><td colspan=1 rowspan=1 > January 8, 2008 </td><td colspan=1 rowspan=1 > April 7, 2009 </td></tr>
<tr> <th colspan=1 rowspan=1 > Model identifier </th><td colspan=1 rowspan=1 > Xserve1,1 </td><td colspan=1 rowspan=1 > Xserve2,1 </td><td colspan=1 rowspan=1 > Xserve3,1 </td></tr>
<tr> <th colspan=1 rowspan=1 > Processor </th><td class="highlighted"  colspan=1 rowspan=1 > Dual 2 GHz, Dual 2.66 GHz, or Dual 3 GHz Dual-Core Intel Xeon 5100 </td><td colspan=1 rowspan=1 > 2.8 GHz, Dual 2.8 GHz, or Dual 3 GHz Quad-Core Intel Xeon 5400 </td><td colspan=1 rowspan=1 > 2.26 GHz, Dual 2.26 GHz, Dual 2.66 GHz, or Dual 2.93 GHz Quad-Core Intel Xeon 5500 </td></tr>
<tr> <th colspan=1 rowspan=1 > CPU cache </th><td colspan=1 rowspan=1 > 1 MB L2 (Per Processor) </td><td colspan=1 rowspan=1 > 2 MB L2 (Per Processor) </td><td colspan=1 rowspan=1 > 4x 256 KB L2; 8 MB L3 (Per Processor) </td></tr>
<tr> <th colspan=1 rowspan=1 > System bus </th><td colspan=1 rowspan=1 > 1333 MHz Front side bus (Per Processor) </td><td colspan=1 rowspan=1 > 1600 MHz Front side bus (Per Processor) </td><td colspan=1 rowspan=1 > QPI </td></tr>
<tr> <th colspan=1 rowspan=1 > Memory </th><td class="highlighted"  colspan=1 rowspan=1 > 1 GB of 667 MHz PC2-5300 Fully Buffered ECC DDR2 SDRAM Expandable to 32 GB </td><td class="highlighted"  colspan=1 rowspan=1 > 2 GB of 800 MHz PC2-6400 Fully Buffered ECC DDR2 SDRAM Expandable to 32 GB </td><td class="highlighted"  colspan=1 rowspan=1 > 3 GB of 1066 MHz PC3-8500 ECC DDR3 SDRAM Expandable to 24 GB (Quad Core) or 48 GB (Eight Core) Unofficially 48 GB (Quad Core) or 96 GB (Eight Core) </td></tr>
<tr> <th colspan=1 rowspan=1 > Graphics </th><td class="highlighted"  colspan=1 rowspan=1 > ATI Radeon X1300 with 64 MB of GDDR3 SDRAM Optional ATI Radeon X1300 with 256 MB of DDR2 SDRAM </td><td colspan=1 rowspan=1 > ATI Radeon X1300 with 64 MB of GDDR3 SDRAM </td><td colspan=1 rowspan=1 > NVIDIA GeForce GT 120 with 256 MB of GDDR3 SDRAM </td></tr>
<tr> <th colspan=1 rowspan=2 > Hard drive </th><td class="highlighted"  colspan=1 rowspan=1 > 80 GB SATA SATA: Up to 3x 750 GB (2.25 TB) SAS: Up to 3x 300 GB (900 GB) </td><td colspan=1 rowspan=1 > 80 GB SATA SATA: Up to 3x 1 TB (3 TB) SAS: Up to 3x 450 GB (1.35 TB) </td><td colspan=1 rowspan=1 > 160 GB SATA SATA: Up to 3x 2 TB (6 TB) SAS: Up to 3x 450 GB (1.35 TB) </td></tr>
<tr> <td colspan=2 rowspan=1 > Serial ATA 5400-rpm or SAS 15000-rpm Three Internal Bays </td><td colspan=1 rowspan=1 > Serial ATA 7200-rpm or SAS 15000-rpm Optional 128 GB SSD Boot Drive Three Internal Bays </td></tr>
<tr> <th colspan=1 rowspan=1 > Optical drive Slot loading </th><td colspan=1 rowspan=1 > CD-RW/DVD-ROM Combo Drive or DVD-RW DL SuperDrive </td><td colspan=2 rowspan=1 > DVD-RW DL SuperDrive </td></tr>
<tr> <th colspan=1 rowspan=1 > Connectivity </th><td colspan=3 rowspan=1 > 2x Gigabit Ethernet </td></tr>
<tr> <th colspan=1 rowspan=1 > Expansion </th><td colspan=1 rowspan=1 > 1x PCIe ×8 1x configurable slot (PCIe ×8 or 133 MHz PCI-X) </td><td colspan=1 rowspan=1 > 1x PCIe 2.0 ×16 1x configurable slot (PCIe 2.0 ×8 or 133 MHz PCI-X) </td><td colspan=1 rowspan=1 > 2x PCIe 2.0 ×16 (1x 6.6" length and 1x 9.25" length) </td></tr>
<tr> <th colspan=1 rowspan=1 > Peripherals </th><td colspan=1 rowspan=1 > 2x USB 2.0 2x Firewire 800 1x Firewire 400 1x RS-232 serial </td><td colspan=2 rowspan=1 > 3x USB 2.0 2x Firewire 800 1x RS-232 serial </td></tr>
<tr> <th colspan=1 rowspan=1 > Video out </th><td colspan=2 rowspan=1 > Mini-DVI (VGA with adapter) Dual-Link DVI with optional ATI video card </td><td colspan=1 rowspan=1 > Mini DisplayPort </td></tr>
<tr> <th colspan=1 rowspan=1 > Maximum Operating System </th><td colspan=1 rowspan=1 > Mac OS X 10.7 Server "Lion" (Unofficially, can run OS X 10.8 "Mountain Lion, 10.9 "Mavericks", 10.10 "Yosemite" and 10.11 "El Capitan" with an upgrade to a supported graphics card and EFI64 emulation) </td><td colspan=1 rowspan=1 > Mac OS X 10.7 Server "Lion" Unofficially, can run MacOS 10.14 "Mojave" with Mojave Patcher </td><td colspan=1 rowspan=1 > OS X 10.11 "El Capitan" Unofficially, can run MacOS 10.14 "Mojave" with Mojave Patcher </td></tr>
<tr> <th colspan=1 rowspan=1 > Weight </th><td colspan=2 rowspan=1 > 14.4 kg (31.7 Pounds) </td><td colspan=1 rowspan=1 > 14 kg (30.86 Pounds) </td></tr>
</table>
Question:
What is the composition of the Xserve?
Answer:
Xserve use Intel Xeon processors, DDR2 ECC, ATI Radeon graphics, and a maximum storage capacity of 2.25 TB when used with three 750 GB drives.