GIGABYTE GA-EP45-UD3R Intel Motherboard for $99.99
NewEgg offers the GIGABYTE GA-EP45-UD3R LGA 775 Intel P45 motherboard for $99.99, after $15.00 mail-in rebate, and $5.00 instant off. It ships for free. The offer expires 07/31/2009. The GIGABYTE GA-EP45-UD3R supports LGA 775 Quad-core, Core 2 Extreme, Core 2 Duo and Pentium processors, as well as up to 16GB DDR2 1366+ memory. It has one PCI Express 2.0 x16, three PCI Express x1, and three PCI slots.

NewEgg offers the MSI X58 Platinum SLI LGA 1366 Intel X58 motherboard for $197.99, after $20.00 mail-in rebate. The offer expires 07/31/2009. The MSI X58 Platinum SLI LGA 1366 Intel X58 motherboard supports Core i7 processors, and up to 24GB of DDR3 memory. It has two PCI Express 2.0 x16 slot, three PCI Express x1, and two PCI slots.
SuperBiiz offers the GIGABYTE GA-EX58-UD4P LGA 1366 Intel X58 motherboard for $227.99, after $45.61 instant off. The GIGABYTE GA-EX58-UD4P LGA 1366 Intel X58 motherboard supports Core i7 processors, and up to 24GB DDR3 1333 memory, and has three PCI Express 2.0 x16 slot, one PCI Express x4, one PCI Express x1, and two PCI slots.
SuperBiiz offers the ECS X58B-A LGA 1366 Intel X58 motherboard for $204.99, after $41.01 instant off. The ECS X58B-A motherboard supports Core i7 processors, and up to 24GB DDR3 1600 memory. It has two PCI Express 2.0 x16 slot, one PCI Express x4, two PCI Express x1, and one PCI slots.
NewEgg offers the ECS Geforce6100PM-M2 micro ATX AMD motherboard for $33.99, after $12.00 mail-in rebate, and $4.00 instant off. The offer expires 07/15/2009. It ships for free. The ECS Geforce6100PM-M2, based on the NVIDIA GeForce 6100 chipset, supports socket AM2 and AM2+ Phenom, Athlon 64 X2, Athlon 64, Sempron processors and provides 1000 MHz FSB. It has two memory slots for up to 4GB of DDR2 memory, onboard VGA NVIDIA GeForce 6100, one PCI Express 2.0 x16, one PCI Express x1 and two PCI slots.
SuperBiiz offers the ECS BLACK SERIES X58B-A LGA 1366 Intel X58 motherboard for $204.99,after $41.01 instant off. The ECS BLACK SERIES X58B-A supports Core i7 processors and up to 24GB of DDR3 1600 memory. It has two PCI Express 2.0 x16 slots, one PCI Express x4, two PCI Express x1, and one PCI slot.
SuperBiiz offers the DFI LanParty DK X58-T3eH6 motherboard for $215.99, after $42.01 instant off. The DFI LanParty DK X58-T3eH6 supports Core i7 processors and up to 24GB of DDR3 1600 memory. It has three PCI Express 2.0 x16, one PCI Express x1, and two PCI slots.
ZipZoomFly offers the ASUS M4A78 Plus ATX AMD motherboard for $67.99, after $10.00 mail-in rebate. The offer expires 06/30/09. It ships for free. The ASUS M4A78 Plus based on the AMD 770 chipset, supports socket AM2+ and AM3 Phenom II, Phenom X4, Phenom X3, Athlon X4, Athlon X3, and Athlon X2 processors and provides 2600 MHz FSB. It has four memory slots for up to 16GB DDR2 memory, two PCI Express 2.0 x16, one PCI Express x1 and three PCI slots.
mWave offers the ASUS M4N78 Pro ATX AMD motherboard for $94.99. It ships for free. This is the best price in the US market for this product. The ASUS M4N78 Pro based on the NVIDIA GeForce 8300 chipset, supports socket AM2+ and AM3 Phenom II, Athlon X4, Athlon X3, and Athlon X2 processors and provides 2600 MHz FSB. It has four memory slots for up to 16GB DDR2 memory, onboard VGA NVIDIA GeForce 8 series, one PCI Express 2.0 x16, two PCI Express x1, and three PCI slots.
mWave offers the ASUS P5QC LGA 775 Intel P45 motherboard for $107.99, after $15.00 mail-in rebate. The offer expires 06/30/09. The ASUS P5QC supports LGA 775 Quad-core, Core 2 Extreme, Core 2 Duo, and Pentium processors. It has four memory slots for up to 16GB DDR2 memory, and has two memory slots for up to 8GB DDR3 memory. It has one PCI Express 2.0 x16, three PCI Express x1, and two PCI slots.
SuperBiiz offers the ASUS M3N72-D AM2+/AM2 NVIDIA nForce 750a motherboard for $86.99, after $17.41 instant off. The ASUS M3N72-D has the NVIDIA GeForce 8 series integrated graphics, supports AM2+/AM2 Phenom, Athlon 64 X2, and Sempron processors and up to 8GB DDR2 1066 memory, and has two PCI Express 2.0 x16, two PCI Express x1, and two PCI slots.
SuperBiiz offers the MSI 790FX-GD70 ATX AMD motherboard for $162.97, after $31.43 instant off. The MSI 790FX-GD70 based on the AMD 790FX chipset, supports socket AM3 Phenom II processors and provides 5200 MHz FSB. It has four memory slots for up to 16GB DDR3 memory, four PCI Express 2.0 x16, one PCI Express x1, and two PCI slots.
SuperBiiz offers the ASUS M3N-HT Deluxe/HDMI AMD motherboard for $120.97, after $23.03 instant off. TheASUS M3N-HT Deluxe/HDMI, based on nVidia nForce 780a SLI chipset, supports socket AM2+ Phenom FX, Phenom X4, Phenom X2, Athlon X2 and socket AM2 single-core Athlon 64, Athlon 64 X2, Athlon 64 FX, and Sempron processors and provides 2600 MHz FSB. It has four memory slots for up to 8GB of DDR2 memory, three PCI Express 2.0 x16, one PCI Express x1 and two PCI slots.
Newegg offers the ASUS P5Q3 LGA 775 Intel P45 motherboard for $129.99, after $15.00 mail-in rebate. The ASUS P5Q3 supports LGA 775 Quad-core, Core 2 Extreme, Core 2 Duo, and Pentium processors and up to 16GB DDR3 1800(O.C.)/1600 memory, and has two PCI Express 2.0 x16, three PCI Express x1, and two PCI slots.