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Problem
 
I am about to purchase an Intel P35 chipset based motherboard for my next upgrade.
However, as there are over ten motherboards available, it is very difficult to make my pick.
Can you please kindly help to list the differences between these motherboards to help me make my decision?

Answer
Please kindly refer to the table below for the list of major differences between these twelve motherboards:
Model Name P5K P5K SE P5KC P5KR P5K-E/WIFI-AP P5K DELUXE/WIFI-AP P5K PREMIUM/WIFI-AP P5K3 DELUXE/WIFI-AP P5K3 PREMIUM/WIFI-AP P5K WS P5K64 WS Blitz Formula (Special Edition) Blitz Formula Blitz Extreme
Northbridge chipset P35 P35 P35 P35 P35 P35 P35 P35 P35 P35 P35 P35 P35 P35
Southbridge chipset ICH9 ICH9 ICH9 ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R ICH9R
CPU VRM 3 Phase 3 Phase 3 Phase 3 Phase 8 Phase 8 Phase 8 Phase 8 Phase 8 Phase 4 Phase 8 Phase 8 Phase 8 Phase 8 Phase
Memory VRM 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 2 Phase 2 Phase 2 Phase
RAM 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 or 2*DDR3(Dual Channel)@DDR3 1333/1066/800 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR3(Dual Channel)@DDR3 1333/1066/800 onboard DDR3 (Dual Channel)@DDR3 1333 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR3(Dual Channel)@DDR3 1333/1066/800 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR2(Dual Channel) @DDR2 1066/800/667 4*DDR3(Dual Channel)@DDR3 1333/1066/800
PCIex16 1*PCIex16, 1*PCIex16@x4 1*PCIe x16 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16, 1*PCIex16@x4 1*PCIe x16 4*PCIe x 16 (@ x16, x4, x4, x4 speed) 2*PCIe x16 2*PCIe x16 2*PCIe x16
Dual VGA CrossFire X16+X4 n/a n/a CrossFire X16+X4 CrossFire X16+X4 CrossFire X16+X4 CrossFire X16+X4 CrossFire X16+X4 CrossFire X16+X4 n/a CrossFire X16+X4 CrossFire X8+X8 CrossFire X8+X8 CrossFire X8+X8
SB SATA SATA 3Gb/s*4
SATA 3Gb/s*2(RAID 0, 1, by 1x External & 1x internal SATA)		 SATA 3Gb/s*4
SATA 3Gb/s*1(1x External)		 SATA 3Gb/s*4
SATA 3Gb/s*2(RAID 0, 1, JBOD, by 1x External & 1x internal SATA)		 SATA 3Gb/s*4 (RAID 0, 1, 5, 10)
SATA 3Gb/s*2(RAID 0, 1, by 1x External & 1x internal SATA)		 SATA 3Gb/s*6(RAID 0, 1)
SATA 3Gb/s*2 RAID 0, 1, JBOD (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 5, 10)
SATA 3Gb/s*2 RAID 0, 1, JBOD (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 0+1, 5, JBOD)
SATA 3Gb/s*2 RAID 0, 1, JBOD (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 5, 10)
SATA 3Gb/s*2 RAID 0, 1, JBOD (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1)
SATA 3Gb/s *2 (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 5, 10)
SATA 3Gb/s *2 (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 5, 10)
SATA 3Gb/s *2 (both eSATA)		 SATA 3Gb/s*6(RAID 0, 1, 5, 10) SATA 3Gb/s*6(RAID 0, 1, 5, 10) SATA 3Gb/s*6(RAID 0, 1, 5, 10)
SATA 3Gb/s*2 RAID 0, 1, JBOD (both eSATA)
Secondary storage controller JMB363 Marvell 88SE6111 JMB363 JMB363 JMB363 JMB363 JMB363 JMB363 JMB363 Marvell 88SE6121 Marvell 88SE6121 JMB368 JMB368 JMB363
1394 2*1394a n/a 2*1394a 2*1394a 2*1394a 2*1394a 2*1394a 2*1394a 2*1394a 2*1394a 2 x 1394a 2*1394a 2*1394a 2*1394a
Audio Type 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard 8-CH(HD) onboard SupremeFX II Audio Card SupremeFX II Audio Card SupremeFX II Audio Card
Audio Codec ALC883 ALC883 ALC883 ALC883 AD1988B AD1988B AD1988B AD1988B AD1988B ALC888 ALC888 AD1988B AD1988B AD1988B
S/PDIF BACK I/O Coaxial out (onboard) Coaxial out (onboard) Coaxial + Optical out (onboard) Coaxial out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard) Coaxial + Optical out (onboard)
TPM n/a n/a n/a n/a n/a n/a n/a n/a n/a Header Only Header Only n/a n/a n/a
LAN Gigabit LAN Gigabit LAN Gigabit LAN Gigabit LAN Marvell Gigabit LAN Marvell Gigabit LAN
Realtek Gigabit LAN		 Marvell Gigabit LAN
Realtek Gigabit LAN		 Marvell Gigabit LAN
Realtek Gigabit LAN		 Marvell Gigabit LAN
Realtek Gigabit LAN		 2* Marvell Gigabit LAN 2* Marvell Gigabit LAN 2* Marvell Gigabit LAN 2* Marvell Gigabit LAN 2* Marvell Gigabit LAN
WiFi n/a n/a n/a n/a 802.11b/g 802.11b/g 802.11b/g 802.11b/g 802.11b/g n/a n/a n/a n/a n/a
PCIex1 1 3 1 1 2 2 2 2 2 2 0 3 3 3
PCI 3 2 3 3 3 3 3 3 3 2 2 2 2 2
PCIX 0 0 0 0 0 0 0 0 0 1 0 0 0 0
USB 2.0 12 12 12 12 10 10 10 10 10 12 12 12 12 12
COM Header only Header only Header only Header only Header only Header only Header only Header only Header only 1*Header with cable 1*Header with cable 0 0 0
Board Size 30.5cm*24.5cm 30.5cm*19.3cm 30.5cm*24.4cm 30.5cm*24.5cm 30.5cm*24.4cm 30.5cm*24.4cm 30.5cm*24.4cm 30.5cm*24.4cm 30.5cm*24.4cm 30.5cm*24.5cm 30.5cm*24.5cm 30.5cm*24.5cm 30.5cm*24.5cm 30.5cm*24.5cm
Stack Cool2 No No Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes
Option Fan No No No No No No Yes Yes Yes No No Yes Yes Yes
Fusion Block No No No No No No No No No No No Yes No Yes
Voltmeter LED No No No No No No No No No No No Yes Yes Tes
COP EX No No No No No No No No No No No Yes Yes Yes
CPU Level Up No No No No No No No No No No No Yes Yes Yes
Loadline Calibration / CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper CPU Voltage Damper Loadline Calibration Loadline Calibration Loadline Calibration
LCD Poster No No No No No No No No No No No Yes Yes Yes
Onboard Switch No No No No No No No No No No No Yes Yes Yes
Super Memspeed Technology Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
AI Slot Detector Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No
Multi-Language BIOS No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
MyLogo MyLogo2 MyLogo2 MyLogo2 MyLogo3 MyLogo3 MyLogo3 MyLogo3 MyLogo3 MyLogo3 MyLogo2 MyLogo2 MyLogo3 MyLogo3 MyLogo3
Extreme Tweaker / Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Precision Tweaker Extreme Tweaker Extreme Tweaker Extreme Tweaker
Q'Fan Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan2 Q'Fan Plus Q'Fan Plus Q'Fan Plus

Related Model
Blitz Extreme Blitz Formula P5K P5K Deluxe/WiFi-AP
P5K Premium/WIFI-AP P5K SE P5K WS P5K3 DELUXE
P5K3 Premium/WIFI-AP P5K64 WS P5KC P5K-E/WIFI-AP

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