Where did you get the moble P4 info from a P4 523 is a Prescott core 3.06
Prescott (90 nm)
* All models support: MMX, SSE, SSE2, SSE3, Hyper-Threading
Model Number sSpec Number Frequency L2-Cache Front Side Bus Multiplier Voltage Min/Max TDP Socket Release Date Part Number(s)
Mobile Pentium 4 HT 518 SL7DS (D0) 2800 MHz 1024 KiB 533 MT/s 21× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0721M
Mobile Pentium 4 HT 532 SL7DT (D0) 3066 MHz 1024 KiB 533 MT/s 23× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0831M
Mobile Pentium 4 HT 538 SL7DU (D0), SL7NB (E0) 3200 MHz 1024 KiB 533 MT/s 24× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0881M
Mobile Pentium 4 HT 548 SL7X5 (E0) 3333 MHz 1024 KiB 533 MT/s 25× 1.15/1.4 V 50/88 W Socket 478 September 2004 RK80546HE0931M
Mobile Pentium 4 HT 552 SL7NC (E0) 3466 MHz 1024 KiB 533 MT/s 26× 1.15/1.4 V 50/88 W Socket 478 January 2005 RK80546HE10
Prescott (90 nm)
* All models support: MMX, SSE, SSE2, SSE3, Hyper-Threading
Model Number sSpec Number Frequency L2-Cache Front Side Bus Multiplier Voltage Min/Max TDP Socket Release Date Part Number(s)
Mobile Pentium 4 HT 518 SL7DS (D0) 2800 MHz 1024 KiB 533 MT/s 21× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0721M
Mobile Pentium 4 HT 532 SL7DT (D0) 3066 MHz 1024 KiB 533 MT/s 23× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0831M
Mobile Pentium 4 HT 538 SL7DU (D0), SL7NB (E0) 3200 MHz 1024 KiB 533 MT/s 24× 1.15/1.4 V 50/88 W Socket 478 June 2004 RK80546HE0881M
Mobile Pentium 4 HT 548 SL7X5 (E0) 3333 MHz 1024 KiB 533 MT/s 25× 1.15/1.4 V 50/88 W Socket 478 September 2004 RK80546HE0931M
Mobile Pentium 4 HT 552 SL7NC (E0) 3466 MHz 1024 KiB 533 MT/s 26× 1.15/1.4 V 50/88 W Socket 478 January 2005 RK80546HE10