ASUS Maximus II Formula vs ASUS P5Q Premium

Comparison of Maximus II Formula, P5Q Premium

30 specifications	A ASUS Maximus II FormulaView product	B ASUS P5Q PremiumView product
Memoryidentical
ECC сompatibilityKnown for one	Non-ECC	—Unknown — not stated by the source
Maximum internal memoryKnown for one	16 GB	—Unknown — not stated by the source
Storage controllersidentical
RAID levelsKnown for one	0, 1, 10	—Unknown — not stated by the source
Internal I/O1 differ
USB 2.0 connectorsKnown for one	6	—Unknown — not stated by the source
Number of SATA connectorsDiffers	6	10
CD/AUX audio inKnown for one	Yes	—Unknown — not stated by the source
Power fan connectorKnown for one	Yes	—Unknown — not stated by the source
CPU fan connectorKnown for one	Yes	—Unknown — not stated by the source
Number of chassis fan connectorsKnown for one	3	—Unknown — not stated by the source
Chassis intrusion connectorKnown for one	Yes	—Unknown — not stated by the source
Number of IEEE1394 connectorsKnown for one	1	—Unknown — not stated by the source
Rear panel I/O ports1 differ
USB 2.0 ports quantityDiffers	6	10
eSATA ports quantityKnown for one	1	—Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	2	—Unknown — not stated by the source
Ethernet LAN (RJ-45) portsKnown for one	—Unknown — not stated by the source	4
PS/2 ports quantityKnown for one	—Unknown — not stated by the source	1
S/PDIF out portKnown for one	—Unknown — not stated by the source	Yes
Digital audio optical outKnown for one	—Unknown — not stated by the source	1
Featuresidentical
Audio chipKnown for one	ADI AD2000B	—Unknown — not stated by the source
Expansion slots1 differ
Expansion slotsDiffers	2 x PCIe 2.0 x16 3 x PCIe x1 2 x PCI 2.2	4 x PCI EXPress x16 2 x PCI EXPress x1 1 x PCI
BIOSidentical
BIOS memory sizeKnown for one	16 Mbit	—Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	305 mm	—Unknown — not stated by the source
DepthKnown for one	245 mm	—Unknown — not stated by the source
Other featuresidentical
Controller interface typeKnown for one	Marvell 88SE6121	—Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.