Hi All I found this information on a forum ,might help some people looking for a new motherboard for a Core 2 Duo CPU . 
. Intel Platform
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The best chipset for Core 2 Duo is Intel P965/G965. So my first picks are from motherboards based on them. The NVIDIA nForce 680i is targeted for enthusiast SLI gamers. If you are going to build a high-end gaming machine, that may be your first choice. The position of Intel 975X is subtle. It was released seven months earlier than 965, but it is still the only "performance" chipset for Core 2 Duo (P965/G965 is a "mainstream" chipset). As a consequence motherboard manufacturers tend to add rich features to 975X motherboards, that could be a plus for some. (High-end P965 motherboards also come with lots of features, however.) Intel 945P/945G motherboards fall in the low-end sector. Performance-wise, there is no big difference between 945 and 965.
ATX – High-End
1. ASUS P5B Deluxe/WiFi-AP
* Specs: P965 + ICH8R, PCIe x16/PCIe x1/PCI: 2/1/3* supporting CrossFire, PATA/SATA/eSATA: 1/7/1, RAID, dual Gb LAN, AD1988B supporting DTS Connect, coaxial & optical S/PDIF outs, IEEE 1394
* Overclocking: ~520MHz
* Price: ~$210
* Notes: There is also a non WiFi-AP version, ASUS P5B Deluxe (~$190), and two other stripped versions ASUS P5B-E (~$156) and ASUS P5B (~$131)
2. ASUS P5W DH Deluxe
* Specs: 975X + ICH7R, PCIe x16/PCIe x1/PCI: 2/2*/3 supporting CrossFire, PATA/SATA/eSATA: 2/6/1, RAID, dual Gb LAN, ALC882M supporting Dolby Master Studio, coaxial & optical S/PDIF outs, IEEE 1394
* Overclocking: ~420MHz
* Price: ~$220
3. eVGA nForce 680i SLI
* Specs: nForce 680i SLI, PCIe x16/PCIe x1/PCI: 3@(16,16,8)/2*/2 supporting SLI, PATA/SATA: 1/6, RAID, dual Gb LAN, ALC885, optical S/PDIF out, IEEE 1394
* Overclocking: ~525MHz
* Price: ~$250
ATX – Midrange
1. GIGABYTE GA-965P-DS3 (rev. 1.0)
* Specs: P965 + ICH8, PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/6, no RAID, Gb LAN, ALC883, coaxial & optical S/PDIF outs, no IEEE 1394
* Overclocking: ~505MHz
* Price: ~$132
* Notes: GIGABYTE GA-965P-S3 (rev. 1.0) (~$115) is a cheaper alternative. The only difference between DS3 and S3 is that DS3 adopts all solid capacitors.
2. Intel DG965WH
* Specs: G965 + ICH8DH (supporting Intel Viiv), PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/6, RAID, Gb LAN, STAC9271D, optical S/PDIF out, IEEE 1394
* Overclocking: N/A
* Price: ~$126
* Notes: A good stock motherboard
3. ASUS P5N-E SLI
* Specs: nForce 650i SLI, PCIe x16/PCIe x1/PCI: 2/1/2 supporting SLI, PATA/SATA/eSATA: 2/4/1, RAID, Gb LAN, ALC883 5.1 Ch., coaxial S/PDIF out, IEEE 1394
* Overclocking: ~502MHz
* Price: ~$130
* Notes: The comming MSI and GIGABYTE 650i boards can be good competitors.
ATX – Low-End
1. Foxconn P9657AA-8EKRS2H
* Specs: P965 + ICH8R, PCIe x16/PCIe x4/PCIe x1/PCI: 1/1/1/3*, PATA/SATA/eSATA: 1/6/1, RAID, Gb LAN, ALC883, optical S/PDIF out, IEEE 1394
* Overclocking: ~343MHz
* Price: ~$114 (available only at Newegg.com)
* Notes: The most feature-rich low-end ATX board
2. ASRock ConRoeXFire-eSATA2
* Specs: 945P + ICH7R, PCIe x16/PCIe x1/PCI: 2/1*/3 supporting CrossFire, PATA/SATA/eSATA: 1/4/2 (eSATA share controller with SATA), RAID, Gb LAN, ALC888, S/PDIF header only, IEEE 1394
* Overclocking: ~300MHz
* Price: ~$90
* Notes: Another feature-rich motherboard
3. GIGABYTE GA-945P-S3 (rev. 1.0)
* Specs: 945P + ICH7, PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/4, no RAID, Gb LAN, ALC883 5.1 Ch., S/PDIF header only, no IEEE 1394
* Overclocking: ~350MHz
* Price: ~$87
* Notes: The board comes with less features but better overclocking capability than the ASRock board.
4. ASRock 775Dual-VSTA
* Specs: VIA PT880 Pro + VT8237A, Support for both DDR and DDR2, AGP/PCIe x16/PCI: 1/1/4*, PATA/SATA: 2/2, RAID, 10/100Mbps LAN, ALC888, S/PDIF header only, no IEEE 1394
* Overclocking: ~300MHz
* Price: ~$64
* Notes: If you need the support for DDR and/or AGP, this is it.
. Intel Platform
¯¯¯¯¯¯¯¯¯¯¯¯¯
The best chipset for Core 2 Duo is Intel P965/G965. So my first picks are from motherboards based on them. The NVIDIA nForce 680i is targeted for enthusiast SLI gamers. If you are going to build a high-end gaming machine, that may be your first choice. The position of Intel 975X is subtle. It was released seven months earlier than 965, but it is still the only "performance" chipset for Core 2 Duo (P965/G965 is a "mainstream" chipset). As a consequence motherboard manufacturers tend to add rich features to 975X motherboards, that could be a plus for some. (High-end P965 motherboards also come with lots of features, however.) Intel 945P/945G motherboards fall in the low-end sector. Performance-wise, there is no big difference between 945 and 965.
ATX – High-End
1. ASUS P5B Deluxe/WiFi-AP
* Specs: P965 + ICH8R, PCIe x16/PCIe x1/PCI: 2/1/3* supporting CrossFire, PATA/SATA/eSATA: 1/7/1, RAID, dual Gb LAN, AD1988B supporting DTS Connect, coaxial & optical S/PDIF outs, IEEE 1394
* Overclocking: ~520MHz
* Price: ~$210
* Notes: There is also a non WiFi-AP version, ASUS P5B Deluxe (~$190), and two other stripped versions ASUS P5B-E (~$156) and ASUS P5B (~$131)
2. ASUS P5W DH Deluxe
* Specs: 975X + ICH7R, PCIe x16/PCIe x1/PCI: 2/2*/3 supporting CrossFire, PATA/SATA/eSATA: 2/6/1, RAID, dual Gb LAN, ALC882M supporting Dolby Master Studio, coaxial & optical S/PDIF outs, IEEE 1394
* Overclocking: ~420MHz
* Price: ~$220
3. eVGA nForce 680i SLI
* Specs: nForce 680i SLI, PCIe x16/PCIe x1/PCI: 3@(16,16,8)/2*/2 supporting SLI, PATA/SATA: 1/6, RAID, dual Gb LAN, ALC885, optical S/PDIF out, IEEE 1394
* Overclocking: ~525MHz
* Price: ~$250
ATX – Midrange
1. GIGABYTE GA-965P-DS3 (rev. 1.0)
* Specs: P965 + ICH8, PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/6, no RAID, Gb LAN, ALC883, coaxial & optical S/PDIF outs, no IEEE 1394
* Overclocking: ~505MHz
* Price: ~$132
* Notes: GIGABYTE GA-965P-S3 (rev. 1.0) (~$115) is a cheaper alternative. The only difference between DS3 and S3 is that DS3 adopts all solid capacitors.
2. Intel DG965WH
* Specs: G965 + ICH8DH (supporting Intel Viiv), PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/6, RAID, Gb LAN, STAC9271D, optical S/PDIF out, IEEE 1394
* Overclocking: N/A
* Price: ~$126
* Notes: A good stock motherboard
3. ASUS P5N-E SLI
* Specs: nForce 650i SLI, PCIe x16/PCIe x1/PCI: 2/1/2 supporting SLI, PATA/SATA/eSATA: 2/4/1, RAID, Gb LAN, ALC883 5.1 Ch., coaxial S/PDIF out, IEEE 1394
* Overclocking: ~502MHz
* Price: ~$130
* Notes: The comming MSI and GIGABYTE 650i boards can be good competitors.
ATX – Low-End
1. Foxconn P9657AA-8EKRS2H
* Specs: P965 + ICH8R, PCIe x16/PCIe x4/PCIe x1/PCI: 1/1/1/3*, PATA/SATA/eSATA: 1/6/1, RAID, Gb LAN, ALC883, optical S/PDIF out, IEEE 1394
* Overclocking: ~343MHz
* Price: ~$114 (available only at Newegg.com)
* Notes: The most feature-rich low-end ATX board
2. ASRock ConRoeXFire-eSATA2
* Specs: 945P + ICH7R, PCIe x16/PCIe x1/PCI: 2/1*/3 supporting CrossFire, PATA/SATA/eSATA: 1/4/2 (eSATA share controller with SATA), RAID, Gb LAN, ALC888, S/PDIF header only, IEEE 1394
* Overclocking: ~300MHz
* Price: ~$90
* Notes: Another feature-rich motherboard
3. GIGABYTE GA-945P-S3 (rev. 1.0)
* Specs: 945P + ICH7, PCIe x16/PCIe x1/PCI: 1/3*/3, PATA/SATA: 1/4, no RAID, Gb LAN, ALC883 5.1 Ch., S/PDIF header only, no IEEE 1394
* Overclocking: ~350MHz
* Price: ~$87
* Notes: The board comes with less features but better overclocking capability than the ASRock board.
4. ASRock 775Dual-VSTA
* Specs: VIA PT880 Pro + VT8237A, Support for both DDR and DDR2, AGP/PCIe x16/PCI: 1/1/4*, PATA/SATA: 2/2, RAID, 10/100Mbps LAN, ALC888, S/PDIF header only, no IEEE 1394
* Overclocking: ~300MHz
* Price: ~$64
* Notes: If you need the support for DDR and/or AGP, this is it.