LGA775接口最好的U是QX9770。性能大致相当于第四代i3,第一代i5。
LGA775接口的处理器中，虽然QX9770是最好的，但是产量低，价格高，性能并不卓越。若是要升级，推荐Q6700。性能不会比QX9770差太多，但是价格低廉。
附LGA775接口支持的CPU型号：资料来自百度百科LGA775
Prescott Pentium 4 505J,506,520-570,520J-570J,521-571
Prescott 2M Pentium 4 630-670,662-672
Cedar Mill Pentium 4 631-661
Prescott 256K Celeron D 325J-345J,326-351
Prescott Pentium 4 Extreme Edition 3724MHz
Gallatin Pentium 4 Extreme Edition 3400/3466MHz
Smithfield Pentium D 805,820-840 S
mithfield Pentium Extreme Edition 840
Presler Pentium D 915,925,920-960
Presler Pentium Extreme Edition 950/960
Conroe Core 2 Duo E4300-4400,E63X0-68X0,Pentium Dual-Core E21X0-E2200
Conroe Core 2 Extreme,X6800
Conore Celeron Dual Core E1X00
Kentsfield Core 2 Quad,Q6600,Q6700
Kentsfield Core 2 Extreme,QX6700,QX6850,QX6800
Wolfdale Core 2 Duo E8X00 45nm
Wolfdale Core 2 Duo E7X00 45nm
Wolfdale Pentium Dual Core E5X00 45nm
Wolfdale Pentium Dual Core E6300 45nm
Yorkfield Core 2 Quad,Q8X00,Q9X00,Q9X50
Yorkfield Core 2 Extreme,QX9650,QX9770