Which CPU should I choose?

I think the Asus P5B will support the new FSB 1333 CPUs if you update the BIOS. Check with their Support people. If they say yes then get an E6850, otherwise I'd pick an E6600 or E6700.

Good question. Yeah, what kind of P5B are we talking about? The models I found here:

http://ca.asus.com/search.aspx?sea [...] rchkey=P5B

support Core 2 Duo, and some even support quads. A Q6600 may be even better for you than an E6850, depending on what you're planning to use the PC for.

If you change the mobo I'd recommend a GA-P35-DS3R:
http://www.xbitlabs.com/articles/m [...] -ds3r.html

It's actually on both socket formats.

I tried to update my signature with a few more details but I haven´t figured it out yet with the new form.

Asus P5B (Vanilla)

The Prescott processor and Gigabyte heat sink are the only things that haven´t been upgraded from a system I built 2 years ago. The board I bought not too long ago because it was cheap and stable. I can wait a year until the newer and better boards have the bugs worked out (and I have more money). I can´t wait any longer for a new processor. I updated the BIOS yesterday.

Here is some more info from Everest:

CPU Properties:
CPU Type Intel Pentium 4 530J
CPU Alias Prescott
CPU Stepping E0
Engineering Sample No
CPUID CPU Name Intel(R) Pentium(R) 4 CPU 3.00GHz
CPUID Revision 00000F41h

CPU Speed:
CPU Clock 3373.3 MHz (original: 3000 MHz, overclock: 12%)
CPU Multiplier 15.0x
CPU FSB 224.9 MHz (original: 200 MHz, overclock: 12%)
Memory Bus 449.8 MHz
DRAM:FSB Ratio 12:6

CPU Cache:
L1 Trace Cache 12K Instructions
L1 Data Cache 16 KB
L2 Cache 1 MB (On-Die, ECC, ATC, Full-Speed)

Motherboard Properties:
Motherboard ID 64-1501-000001-00101111-062607-Intel-BW$A0545000_BIOS DATE: 06/26/07 16:11:44 VER: 08.00.12
Motherboard Name Asus P5B (3 PCI, 3 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN)

Chipset Properties:
Motherboard Chipset Intel Broadwater P965
Memory Timings 5-5-5-15 (CL-RCD-RP-RAS)
Command Rate (CR) 2T

SPD Memory Modules:
DIMM1: Corsair CM2X1024-6400 1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
DIMM3: Corsair CM2X1024-6400 1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)

BIOS Properties:
System BIOS Date 06/26/07
Video BIOS Date 01/25/07
DMI BIOS Version 1501

Graphics Processor Properties:
Video Adapter Asus EN7900GS
GPU Code Name G71GS (PCI Express x16 10DE / 0292, Rev A1)
GPU Clock (Geometric Domain) 468 MHz (original: 470 MHz)
GPU Clock (Shader Domain) 450 MHz (original: 450 MHz)
GPU Clock (ROP Domain) 450 MHz (original: 450 MHz)
Memory Clock 661 MHz (original: 660 MHz)




Sensor Properties:
Sensor Type Winbond W83627DHG (ISA 290h)
GPU Sensor Type Driver (NV-DRV)
Motherboard Name Asus P5B Series
Chassis Intrusion Detected No

Temperatures:
Motherboard 32 °C (90 °F)
CPU 47 °C (117 °F)
GPU 37 °C (99 °F)
Seagate ST3200822AS 35 °C (95 °F)
Seagate ST3500630AS 34 °C (93 °F)

Cooling Fans:
CPU 4141 RPM
Chassis #1 2637 RPM
Chassis #2 1125 RPM
Power Supply 2482 RPM

Voltage Values:
CPU Core 1.29 V
+3.3 V 3.28 V
+5 V 4.99 V
+12 V 11.83 V
+5 V Standby 4.99 V


All input welcome
Thanks