P4P800 CPU voltage options

Indy500

Indy500

Indy500

Soldato
Joined
7 Mar 2005
Posts
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For some reason the bios wont let me set lower than 1.525v. The P4 2.4c in there is rated 1.350-1.425v. I'm not planning on overclocking yet as the ram I need hasnt arrived, naturally with the extra voltage the CPU is a bit toasty (49C).

Strange to me considering Asus boards are usually known for vdroop problems... :rolleyes:
 
err no, your standard voltage is 1.525:

2.4GHz P4C 2.4GHz 130nm Northwood 20 8KB + 12KμOps 512KB 0KB 200MHz / 800MHz 12X 1.525 66.2 MMX / SSE / SSE2 HT D1 / M0

Lower would mean instability
If you're sure its a C then your temp is too high, try reseating the heatsink, add good quality thermal compound and if needed buy a better cooler, 49C is too much for a northy, even with my old cheap aluminium titan cpu cooler; my northwood was just 3 C higher as room temp.
 
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snowdog said:
Lower would mean instability
If you're sure its a C then your temp is too high, try reseating the heatsink, add good quality thermal compound and if needed buy a better cooler, 49C is too much for a northy, even with my old cheap aluminium titan cpu cooler; my northwood was just 3 C higher as room temp.
Click to expand...

Most Northwoods will run stock speeds at much lower vcore than default, not guarenteed but saying it'll mean instability is not 100% accurate. 49C if thats under load is fine, if idle its a bit warm yes.

edit found this - These parts have some specifications that differ from those in the Intel® Pentium® 4 Processor with 512-KB L2 Cache on 0.13 Micron Process Datasheet. The specifications that are different from the datasheet are: Vmax = 1.425 V, Vmin = 1.350 V, Icc_max = 57.9 A, TDP = 75.1 W, Tcase = 72 °C, Isgnt = 32.0 A.

For M0 stepping 2.4C , so i'm assumig he has one of those. Maybe a BIOS update is needed.
 
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Justintime said:
These parts have some specifications that differ from those in the Intel® Pentium® 4 Processor with 512-KB L2 Cache on 0.13 Micron Process Datasheet. The specifications that are different from the datasheet are: Vmax = 1.425 V, Vmin = 1.350 V, Icc_max = 57.9 A, TDP = 75.1 W, Tcase = 72 °C, Isgnt = 32.0 A.

For M0 stepping 2.4C , so i'm assumig he has one of those. Maybe a BIOS update is needed.
Click to expand...

Its an M0 stepping.

The BIOS is dated 3\2004.

I'm using a full-copper Akasa heatsink and AS5.
 
Justintime said:
Most Northwoods will run stock speeds at much lower vcore than default, not guarenteed but saying it'll mean instability is not 100% accurate. 49C if thats under load is fine, if idle its a bit warm yes.

edit found this - These parts have some specifications that differ from those in the Intel® Pentium® 4 Processor with 512-KB L2 Cache on 0.13 Micron Process Datasheet. The specifications that are different from the datasheet are: Vmax = 1.425 V, Vmin = 1.350 V, Icc_max = 57.9 A, TDP = 75.1 W, Tcase = 72 °C, Isgnt = 32.0 A.

For M0 stepping 2.4C , so i'm assumig he has one of those. Maybe a BIOS update is needed.
Click to expand...



hmm ok, i still think its too hot (near 55 C 'unstable' limit), about the volts, i didnt know that, the data sheet i use also says 1.525 for the c group, sry for that.




Ehh yeah i think u may need bios updt sr4470, if there isn't any then i dont know, never heard about diff specs of the C series, i always overvolted mine then (even had it on 1.6 sometimes lol, overclock...).
 
snowdog said:
Ehh yeah i think u may need bios update sr4470, if there isn't any then i dont know, never heard about diff specs of the C series, i always overvolted mine then (even had it on 1.6 sometimes lol, overclock...).
Click to expand...

The M0 stepping Northwood was rumoured to be a failed cache Extreme Edition.
 
Hmmm yea 3Ghz is fairly dissapointing, had proper Northwood 2.4s hit 3.4-3.5Ghz on stock volts, but avg was about 3.2. Are you sure its just not your RAM or chipset flaking out? thats the problem with those 200FSB cpus, need good stuff to really clock em. Another possibility is it might have failed to be an EE because it could'nt clock :(
 
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