Chipset Comparison Table
|Header Cell - Column 0||925XE||925X||915P|
|Processors||Pentium 4||Pentium 4||Pentium 4, Celeron D|
|FSB Speed||200 MHz QDR266 MHz QDR||200 MHz QDR||200, 133 MHz QDR|
|Max. Memory||4 GB (non-ECC only)||4 GB||4 GB|
|Memory Type||DDR2-400, DDR2-533||DDR2-400, DDR2-533||DDR400, DDR2-400, DDR2-533|
|Memory Modes||Single Or Dual Channel||Single Or Dual Channel||Single Or Dual Channel|
|Graphics||PCI Express x16||PCI Express x16||PCI Express x16|
|PCI Express||4 Slots PCIe x11 Slot PCIe x16||4 Slots PCIe x11 Slot PCIe x16||4 Slots PCIe x11 Slot PCIe x16|
|PCI Slots||6 PCI 2.3 Bus Masters, 32 Bit||6 PCI 2.3 Bus Masters, 32 Bit||6 PCI 2.3 Bus Masters, 32 Bit|
|Storage Controller||1 UltraATA/1004 SATA-150||1 UltraATA/1004 SATA-150||1 UltraATA/1004 SATA-150|
|USB Ports||8 USB 2.0 Ports||8 USB 2.0 Ports||8 USB 2.0 Ports|
|Network Interface||100 MBit MACGbE via PCIe||100 MBit MACGbE via PCIe||100 MBit MACGbE via PCIe|
|Audio Support||HD Audio 24 Bit192 kHzAC97 2.3||HD Audio 24 Bit192 kHzAC97 2.3||HD Audio 24 Bit192 kHzAC97 2.3|
Click to enlarge !Memory Setups
While many people expected the 925XE to support DDR2-667 memory, Intel has stuck to DDR2-533. Faster memory would clearly have sped up the whole system - please see the benchmark section for details - but two reasons speak against early deployment of this technology. First, DDR2-667 is still much more expensive than DDR2-533. Second, running a 333 MHz memory interface clock for DDR2-667 would require operating the RAM asynchronously, something that Intel has always tried to avoid.
Despite Intel’s decision, there is in fact a way to operate DDR2 memory far beyond DDR2-533 specs. By simply selecting the memory ratio that is required to match DDR2-533 when running FSB800, the memory will automatically run at DDR2-711 when the FSB is increased to FSB1066. In other words, when selecting the 1 to 1.33 ratio you would use to run DDR2-533 on FSB800, when you move to the 266 MHz FSB of FSB1066, you will be running the memory bus at 266 * 1.33 = 355.6 MHz, which means DDR2-711.
While you won’t be able to operate DDR2-533 modules highly overclocked at DDR2-711, any branded DDR2-667 should be able to reach that speed easily. So far, we’ve tried modules from Corsair, Crucial and GeIL and easily hit the desired speeds with tolerant timings.