On 2012/03/29 17:29 (GMT-0500) Michael Hennebry composed:
On Thu, 29 Mar 2012, Felix Miata wrote:
Stepping doesn't say anything useful without family& model for context. I'm looking at two different Hyperthreading P4 cpuinfo screens ATM, stepping of 3 on one, 5 on the other, but one is model 4 family 5 2048 cache (2.8GHz Prescott I think), the other model 6 family 5 2048 cache (3.4GHz Cedar Mill for sure).
Those were supposed to read family 15 (but all Pentium 4 are 15 AFAICT).
Here is /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 3.20GHz stepping : 9 cpu MHz : 3200.000 cache size : 512 KB flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pebs bts cid xtpr address sizes : 36 bits physical, 32 bits virtual
Except for the apparent CPU speed error between URL and body text, http://ark.intel.com/products/27493/Intel-Pentium-4-Processor-supporting-HT-Technology-3_20-GHz-512K-Cache-800-MHz-FSB seems to describe what you have, a late production (socket 478) Northwood. https://en.wikipedia.org/wiki/Pentium_4
If you want NX for your existing motherboard you'd probably have to find a Prescott 478, which may never have existed, and even if it does, might not be supported by your BIOS or any available upgrade for it.
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