What happens when using a HT P4 processor in a non-HT P4 board?

[TechKnight]

Processor
sSpec Number: SL6WK
CPU Speed: 3 GHz
Bus Speed: 800 MHz
Bus/Core Ratio: 15
L2 Cache Size: 512 KB
L2 Cache Speed: 3 GHz

Package Type: 478 pin
Manufacturing Technology: 0.13 micron
Core Stepping: D1
CPUID String: 0F29h
Thermal Design Power: 81.9W
Thermal Specification: 70°C

Motherboard
The latest in the line of solid and stable Intel® Desktop Boards, the D845PESV delivers support for robust DDR333 SDRAM memory technology. Intel Precision Cooling Technology adjusts the fan speed real-time, enabling quieter system operation. Featuring the Intel 845PE chipset with discrete AGP graphics makes this the right board for performance and mainstream users.

-Support for an Intel® Pentium® 4 processor in a mPGA478 socket with a 400/533 MHz system bus.
-Two 184-pin DDR SDRAM DIMM sockets. Support for single-sided or double-sided DIMMs (DDR 333/266). Support for up to 2 GB? system memory
-Intel® 845PE Chipset
-SMSC LPC47M172 LPC bus I/O controller



This board currently has a P4 1.9 Socket 478. I have flashed the board to the latest BIOS. However, I can't find any of Intel's documentation showing the max speed P4 processor supported by this processor. Any ideas on what would happen if I use a 3.0GHz HT in this? Will it just clock down? Not run at all? Do HT systems run on DDR memory? (As opposed to DDR2)

 

[InflatableBuddha]

Someone correct me if I'm wrong here. The 3.0Ghz P4 you have runs at 200 Mhz x 15 (200 Mhz quad-pumped).

The mobo only supports 533 Mhz FSB (133 Mhz quad-pumped), so the new processor should down-clock to that speed. Taking the same multiplier (15), you will get 133 x 15 ~= 2.0 Ghz. Not much improvement over the current processor.

 

[TechKnight]

Thanks for your response! Man things have gotten so complicated these days. What happened to the old days when Clock = FSB x Multiplier?? Quad pumps...