which P4 to buy for OCing past 3GHz

Techguy · 11-09-2002, 12:18 PM

I've got a P4 2.53B and an IT7 max, h20 cooled, and it's great. I hit 3GHz without a problem. A friend of mine is building a PC and is planning to get an ABIT IT7 Max2, and h20 cool it. He wants to know which p4 will get him a great OC over 3 GHz.
Of the processors 1.6A to 2.66B, which would you get?
If you have it oced:
please tell me the OCed speed and cooling used (h20, air, pelt, etc.)

All he wants to hit at least 3GHz at 1.7Vcore (no voltage mods for him.)

He may get a 2.53, but if there are any cheaper (or if the 2.6 or 2.66 do a lot better) p4s that tend to hit higher than 3011.5 MHz (158.5FSB * 19) with ease, please let me know.

Thanks for any input!

Someone mentioned Co steppings, does any one have info on which P4's have this, and where to look to get a CO p4?

also, if there is a choice, I'd like to tell him to get a CPU where @ 3GHz he'll have a higher FSB than what a 2.8 would go to, because from what I've seen a lower mult. * higher FSB is better.

(i.e. are any 18x mult. p4's good for 166FSB? or something of the like?)

Thanks again.

Jason-Pro · 11-09-2002, 12:43 PM

fastest he can afford

Yo-DUH_87 · 11-09-2002, 01:21 PM

I have a 2.4b, and it would happily hit about 3.0 GHz, if I had a overclockers mobo, like the Abit, or Gigabyte. The Soyo P4X400 doesn't have lockable PCI/AGP/DDR deviders, and therefore it won't let me go above 165 fsb (the HD controller freaks out at 160) (sniff). Oh well, live and learn...

I think that the 2.53 or the 2.6 would hit 3 GHz easily, but get the 2.8 if you want screaming preformance.

Or, you could just wait until christmas, for the 3.06 (nahh)...

Brad · 11-09-2002, 01:41 PM

the 2.5ghz chips are almost all C1 core by now, they are a good choice, but as Jason said, buy whatever he can afford

nexxo · 11-10-2002, 02:54 PM

There's a problem with this... as you know the P4 will automatically throttle down when it overheats to prevent burning out. Handy, but the problem with this is that it doesn't tell you when it is doing it (i.e. it does not report actual up-to-the-minute clock speeds). So there you are, thinking you're achieving faster and faster overclocks while in reality it has been throttling down quite nicely to keep from burning to a crisp...

Techguy · 11-10-2002, 03:33 PM

I don't think 40 C load is an issue for my PC.
My temps could be a lot lower, but I have a silent system. (all less than 30 dBA fans, and the only thing you can hear when it's on are the two WD 120GB SE's.

that feature is annoying in that I do wish I knew when it kicked in, but I can't see it kicking in at 40 C.

my friend's gonna try the 2.53, he'll get a better stepping than what I have as I got mine in june when they were over the $650 mark (the company bought it :->) I hope he can break the 3 GHZ w/o a problem.

Yo-DUH_87 · 11-10-2002, 04:15 PM

Quote:

Originally posted by nexxo
There's a problem with this... as you know the P4 will automatically throttle down when it overheats to prevent burning out. Handy, but the problem with this is that it doesn't tell you when it is doing it (i.e. it does not report actual up-to-the-minute clock speeds). So there you are, thinking you're achieving faster and faster overclocks while in reality it has been throttling down quite nicely to keep from burning to a crisp...

Do all he p4s do this? Mine keps overheating, and causing random restarts (not so much anymore, as it has been cooler out). I wonder...

nexxo · 11-10-2002, 05:13 PM

They all do. Thing is of course that temps on the chip can rise awefully fast during intensive CPU activity, so fast that even by the time the CPU registers this and throttles down, it has already exceeded functioning levels. At 40 degrees however I would not expect this feature to kick in, but at 60... Perhaps someone out there knows at which temp exactly throttle-down kicks in?

Yo-DUH_87 · 11-10-2002, 10:36 PM

My chip crashes at 46c, which is unusual. That is using the MBM probe, though, and it ALWAYS says 45 to 46. Even when I first start up the system!

I'm getting a new heatsink soon, so hopefuly that will solve the problem.

Can O' Beans · 11-10-2002, 11:30 PM

1.6A & 1.8A wouldn't be very good candidates. Some have hit the 3Ghz mark, but you have to be lucky.

I'd go with the lower to mid 2Ghz range. Most of those should be able to hit 3Ghz and would be the cheaper alternative. 2.8Ghz chips would just be too expensive and they don't OC as well as the lower (higher multiplier) chips.

Check out the www.overclockers.com CPU database & see what certain chips have been able to do.

Brad · 11-10-2002, 11:54 PM

85C is the temperature

Techguy · 11-11-2002, 10:38 AM

isn't 85 C way above safe temp any how?
so if it only kicks in throtteling at 85, how's it gonna stop the CPU from frying?

11-09-2002, 12:18 PM	#1
Techguy Cooling Savant Join Date: Nov 2001 Location: Suwanee, GA Posts: 130	which P4 to buy for OCing past 3GHz I've got a P4 2.53B and an IT7 max, h20 cooled, and it's great. I hit 3GHz without a problem. A friend of mine is building a PC and is planning to get an ABIT IT7 Max2, and h20 cool it. He wants to know which p4 will get him a great OC over 3 GHz. Of the processors 1.6A to 2.66B, which would you get? If you have it oced: please tell me the OCed speed and cooling used (h20, air, pelt, etc.) All he wants to hit at least 3GHz at 1.7Vcore (no voltage mods for him.) He may get a 2.53, but if there are any cheaper (or if the 2.6 or 2.66 do a lot better) p4s that tend to hit higher than 3011.5 MHz (158.5FSB * 19) with ease, please let me know. Thanks for any input! Someone mentioned Co steppings, does any one have info on which P4's have this, and where to look to get a CO p4? also, if there is a choice, I'd like to tell him to get a CPU where @ 3GHz he'll have a higher FSB than what a 2.8 would go to, because from what I've seen a lower mult. * higher FSB is better. (i.e. are any 18x mult. p4's good for 166FSB? or something of the like?) Thanks again. __________________ My only PC is a PII 333 with 256MB RAM a GeForce2 MX 200, and 30GB's of 7,200rpm ATA/66 goodness. And yes, I know it sucks.

11-09-2002, 01:21 PM	#3
Yo-DUH_87 Cooling Savant Join Date: Mar 2002 Location: Oregon, USA Posts: 230	I have a 2.4b, and it would happily hit about 3.0 GHz, if I had a overclockers mobo, like the Abit, or Gigabyte. The Soyo P4X400 doesn't have lockable PCI/AGP/DDR deviders, and therefore it won't let me go above 165 fsb (the HD controller freaks out at 160) (sniff). Oh well, live and learn... I think that the 2.53 or the 2.6 would hit 3 GHz easily, but get the 2.8 if you want screaming preformance. Or, you could just wait until christmas, for the 3.06 (nahh)... __________________ Signing out... Yo-DUH_87 If it works, fix it until it's broke! Then, after it's broke, add duct tape! Affordable webhosting!

11-09-2002, 01:41 PM	#4
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	the 2.5ghz chips are almost all C1 core by now, they are a good choice, but as Jason said, buy whatever he can afford __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

11-10-2002, 02:54 PM	#5
nexxo Cooling Savant Join Date: Jul 2002 Location: Brimingham, UK Posts: 385	There's a problem with this... as you know the P4 will automatically throttle down when it overheats to prevent burning out. Handy, but the problem with this is that it doesn't tell you when it is doing it (i.e. it does not report actual up-to-the-minute clock speeds). So there you are, thinking you're achieving faster and faster overclocks while in reality it has been throttling down quite nicely to keep from burning to a crisp... __________________ "There is a thin line between magic and madness"

11-10-2002, 03:33 PM	#6
Techguy Cooling Savant Join Date: Nov 2001 Location: Suwanee, GA Posts: 130	I don't think 40 C load is an issue for my PC. My temps could be a lot lower, but I have a silent system. (all less than 30 dBA fans, and the only thing you can hear when it's on are the two WD 120GB SE's. that feature is annoying in that I do wish I knew when it kicked in, but I can't see it kicking in at 40 C. my friend's gonna try the 2.53, he'll get a better stepping than what I have as I got mine in june when they were over the $650 mark (the company bought it :->) I hope he can break the 3 GHZ w/o a problem. __________________ My only PC is a PII 333 with 256MB RAM a GeForce2 MX 200, and 30GB's of 7,200rpm ATA/66 goodness. And yes, I know it sucks.

11-09-2002, 12:43 PM	#2
Jason-Pro Cooling Savant Join Date: Oct 2001 Location: Manitowoc, Wisconsin Posts: 217	fastest he can afford

11-10-2002, 05:13 PM	#8
nexxo Cooling Savant Join Date: Jul 2002 Location: Brimingham, UK Posts: 385	They all do. Thing is of course that temps on the chip can rise awefully fast during intensive CPU activity, so fast that even by the time the CPU registers this and throttles down, it has already exceeded functioning levels. At 40 degrees however I would not expect this feature to kick in, but at 60... Perhaps someone out there knows at which temp exactly throttle-down kicks in? __________________ "There is a thin line between magic and madness"

11-10-2002, 10:36 PM	#9
Yo-DUH_87 Cooling Savant Join Date: Mar 2002 Location: Oregon, USA Posts: 230	My chip crashes at 46c, which is unusual. That is using the MBM probe, though, and it ALWAYS says 45 to 46. Even when I first start up the system! I'm getting a new heatsink soon, so hopefuly that will solve the problem. __________________ Signing out... Yo-DUH_87 If it works, fix it until it's broke! Then, after it's broke, add duct tape! Affordable webhosting!

11-10-2002, 11:30 PM	#10
Can O' Beans Cooling Savant Join Date: Aug 2002 Location: Pa - USA Posts: 264	1.6A & 1.8A wouldn't be very good candidates. Some have hit the 3Ghz mark, but you have to be lucky. I'd go with the lower to mid 2Ghz range. Most of those should be able to hit 3Ghz and would be the cheaper alternative. 2.8Ghz chips would just be too expensive and they don't OC as well as the lower (higher multiplier) chips. Check out the www.overclockers.com CPU database & see what certain chips have been able to do.

11-10-2002, 11:54 PM	#11
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	85C is the temperature __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

11-11-2002, 10:38 AM	#12
Techguy Cooling Savant Join Date: Nov 2001 Location: Suwanee, GA Posts: 130	isn't 85 C way above safe temp any how? so if it only kicks in throtteling at 85, how's it gonna stop the CPU from frying? __________________ My only PC is a PII 333 with 256MB RAM a GeForce2 MX 200, and 30GB's of 7,200rpm ATA/66 goodness. And yes, I know it sucks.

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