socket 775 motherboard maximum overclocked speeds - pcstats
Motherboards	FSB (MHz)	Ranking
Biostar TP35D3-A7 DLX (P35 Express)	515
MSI P35 Platinum (P35 Express)	512
Gigabyte GA-P35-DS3R (P35 Express)	504
Biostar TP35D2-A7 (P35 Express)	495
Gigabyte GA-P35-DQ6 (P35 Express)	483
MSI P6N Diamond (NF 680i SLI)	482
Asus P5N32-E SLI (NF 650i SLI)	478
Gigabyte GA-P31-DS3L (P31 Express)	472
ECS PN2 SLI2+ (NF 680i SLI)	463
MSI P6N SLI Platinum (NF 650i SLI)	450
Abit AB9 Pro (P965 Express)	435
Asus P5B Deluxe/WiFi-AP (P965 Express)	420
ECS NF650iSLIT-A (NF 650i SLI)	420
Asus P5N32-SLI Premium (NF 590 SLI)	412
Asus P5B-E (P965 Express)	410
Gigabyte GA-965P-DQ6 (P965 Express)	406
Asus P5W64 WS Pro (975X)	406
Abit AW9D-MAX (975X)	400
MSI P965 Platinum (P965 Express)	385
Foxconn 975X7AB-8EKRS2H (975X)	375
MSI 975X Platinum (975X)	368
Foxconn P9657AA-8KS2H (P965 Express)	360
Gigabyte GA-965P-DS3 (P965 Express	352
ECS PN1 SLI2 Extreme (NF 590 SLI)	352
Epox EP-5P945 Pro (945P)	350
Biostar P4M890-M7 (VIA PT890)	350
ECS G33T-M2 (G33 Express)	336
Foxconn G9657MA-8KS2H (G965 Express)	335
Gigabyte GA-8I945GZME-RH (945GZ)	333
Gigabyte GA-945GM-S2 (945G)	266
Albatron PX925XE Pro-R (925X)	266
DFI LANParty 875P-T (i875P)	266
Foxconn 955X7AA-8EKRS2 (955X)	257
Albatron PX915SLI (915PL)	256
Foxconn 975X7AA-8EKRS2H (975X)	255
Gigabyte GA-945PL-S3 (945PL)	255
Gigabyte GA-8N-SLI Royal (NF4 SLI)	255
Foxconn 945P7AA-8EKRS2 (945P)	255
Biostar Tforce P965 Deluxe (P965 Express)	254
MSI P4N Diamond (NF4 SLI)	253
Gigabyte GA-8I955X (955X)	253
ECS C19-A (NF4 SLI XE)	251
Albatron PX915P-AGPe (915P)	250
Epox EP-5NVA+ SLI (NF4 SLI)	247
Foxconn NF4SLI7AA-8EKRS2 (NF4 SLI)	247
Gigabyte GA-8N-SLI Quad Royal (NF4 SLI)	245
Albatron PX915G Pro (915G)	245
MSI 915P Neo2 Platinum (915P)	244
ECS RS400-A (AMD RS400)	243
Aopen i915Pa-PLF (915P)	242
Aopen i945Ga-PHS (945G)	237
ECS PF88 Extreme (SiS 656)	237
Gigabyte GA-8I945P Pro (i945P)	237
ASRock 775XFire-eSATA2/A/ASR (945PL)	236
ECS 945G-M3 (945G)	232
Epox EP-5EGA+ (915G)	223
Gigabyte GA-8ANXP-D (925X)	220
Gigabyte GA-8GPNXP Duo (915P)	217
ASRock 775V88 (VIA PT880)	216
MSI 661FM3-V (SiS 661)	214

Here with the Socket 775 motherboards you can really see the difference between the Intel Pentium 4/D/XE motherboards and the models intended for the Core 2 Duo. 500 MHz FSB, yes that's pretty darn sweet. ;-)