Q: Im going to buy a P4 1.8A fairly quickly (within months), I wonder if anyone has had success overclocking like them with 2.0A and Northwood CPUs .
For the mobo Im looking at an Abit Bd7 because it will lock 33MHz PCI bus . Could this be the correct motherboard if I wanted to overclock? I have 2x 256mb PC2100 ram . key will this work?
Has anyone have any overclocking done with a P4 1.8A . what speeds can you do? What motherboard are you using?
Please Gimme Some ideas!
thanks
Best Answer: The frontside bus is probably running at the wrong speed that the CPU requires.
Intel P4 CPUs have a locked multiplier, meaning that it's fixed. It's set so that the right FSB speed will cause the CPU to run at it's rated speed.
For example, a 2.4GHz P4 on the Northwood 533MHz FSB chipset will have a multiplier that is roughly 18. To get that, you take 2400MHz and divide that by 133MHz (the true speed of the FSB). Now let's say your RAM is running at 400MHz instead of 533MHz. That means the true speed is now 100MHz. 100 x 18 = 1800. That's where your 1.8Ghz is coming from.
Make sure you're using the right RAM for the speeds you need. Check the BIOS for the right settings as well.
Re:Well here's the article:
http://www.hardocp.com/reviews/cpus/intel/p416a/
I think i've heard the voltage is 1.6…however I am not sure, it does not say what the voltage is in the article so it could maybe be the default although i doubt that…
Re:what voltage did they get that 1.6a to, to achieve that 2.2ghz? I would watch it if it requires too high of a voltage mod to get it….I have seen 1.8's get 2.2 easy and go slightly over…I have seen 2.25,2.3 and even a few 2.4's all with retail cooling, but some have to push the voltage to above recommended levels for the chip…It can certainly do it but can drastically reduce the operating life cycle of the cpu.
Re:I have also been reading on hardocp about the 1.6a which looks like it overclocks to 2.2ghz with a higher fsb than the 1.8–improving memory bandwith and all that…its also about $50 cheaper in price, so I am really considering that now….
Thanks for all the help
Re:I think the stability has more to do with the motherboard chipsets imo…because I have noticed that every intel chipset based mobo i have used has been way more stable and compatable than the via ones, (i have used the kt133a and the kt266a)….anyways, my celeron 300a @ 504 was VERY stable, i dont see why this wouldn't be
Re:<< You want stability and you are considering overclocking? :confused:i/expressions/rolleye.gif >>
They aren't mutually exclusive as far as I know :confused:
-Ice
Re:You want stability and you are considering overclocking? :confused:i/expressions/rolleye.gif
Re:< The only NW 1.8GHz o'c I've seen thus far got it up to 2.13GHz. >
guy do a search…there are many guys in here that have got it up to 2.2ghz..one guy got it to 2.25 with 1.65v…so 2.2ghz seems fairly common as the board only needs to get to 125mhz fsb…All aircooled with retail hsf…
< Basic, IMHO, the Athlon XP 1800+ on KT266A would probably be faster than P4 1.8Aghz on i845 or i850. Is it possible that you're losing speed by doing such an "upgrade?" >
guyally he has stated ocing it and I am sure he is considering reports here of many getting them to 2.2ghz. If he can get it to 2.2ghz that would be slightly faster then the 2000+xp and who nows since the fsb is oc'd the chip would be running at 500mhz. His memory bandwidth will be increased and the p4 can use it…
For me I am coming off of a 1.4tbird which is probably about 20 percent plus behind the xp1800+..so for me it will be an increase…ofcourse if I go that route.
Re:Out of curiousity…how much do you think everything would be worth?
I was thinking of selling everything for about $325 … the motherboard and cpu are both new, and the heatsink has been used for a little over a month, has been cleaned with goo off, and is in perfect condition… I saw this all retailing for > $350…so I would think this would be a fair price…but I could be wrong…
Thanks for the help
Re:It's actually because i need stability over performance atm for what i do…but thanks for asking, yeah i was hoping the stuff would sell .. it is top of the line
Re:I guess i could try that….I have an athlon xp 1800+ and asus a7v266-e i might sell there too…. i guess
Basic, IMHO, the Athlon XP 1800+ on KT266A would probably be faster than P4 1.8Aghz on i845 or i850. Is it possible that you're losing speed by doing such an "upgrade?"
In addition, since your components are top of the line, if you do decide to sell the stuff, a lot of people may want what you have to sell. From what I've noted, at FS/FT, older components are much harder to sell, while top of the line stuff is actually in demand
Re:I guess i could try that….I have an athlon xp 1800+ and asus a7v266-e i might sell there too…. i guess
Re:I SAID EARLIER THAT I HAVE DDR RAM AND IM GETTING A DDR CHIPSET MOTHERBOARD!
guy, no need to flame or anything here. Indeed, rambus works best for P4. If you already have DDR, selling it on the FS/FT forum is a good idea also. That stuff is worth a lot now
Re:I SAID EARLIER THAT I HAVE DDR RAM AND IM GETTING A DDR CHIPSET MOTHERBOARD!
Re:<< Don't ya remember tomshardware dual between an overclocked penitum 4 and athlon xp? The Pentium 4 @ 2600MHZ on RAMBUS beated the pentium 4 @ 3000mhz on DDR RAM cuz THE HIGHER YOU OVERCLOCK THE MORE bandwidth hungry the Penium 4 gets! SO either get an Asus P4T-E or Abit TH7II.:D >>
Of course one should remember THG did use what is currently the slowest DDR P4 chipset widely available.
The only NW 1.8GHz o'c I've seen thus far got it up to 2.13GHz.
Re:Keep checking on this Northwood OC database (http://www.vr-zone.com/guides/Intel/Northwood/).
There's a guy who has 1.8A @ 2.5GHz with air cooling and 1.8A @ 3.4GHz with LN2 cooling.
Re:Don't ya remember tomshardware dual between an overclocked penitum 4 and athlon xp? The Pentium 4 @ 2600MHZ on RAMBUS beated the pentium 4 @ 3000mhz on DDR RAM cuz THE HIGHER YOU OVERCLOCK THE MORE bandwidth hungry the Penium 4 gets! SO either get an Asus P4T-E or Abit TH7II.:D
Re:On the asus p4b266….i found two things:
ASUS P4B266-C FOR INTEL P4 SOCKET 478 PIN CPU (BULK) $114.95
ASUS P4B266 845D INTEL P4 478 PIN W/USB 2.0 /DDR /AUDIO( NO LAN) $155.95
the -c model looks like its the same as the p4b266 except it only has 2 ddr slots and it doesn't have the usb 2.0 or built in audio (which i dont really need anyways…)
I am curious if there are any other advantages buying the more expensive one over the cheaper -c model though…any ideas?
thanks again
Re:Well if i didn't already have two sticks of ddr ram I would consider it…..
Re:i would go with an Abit Th7 II and rambus if possible
P4 @ 2.6 Ghz with i850 > P4 @ 3.0 Ghz with i845
i remember before the 845 everyone sang the praises of rambus now it seems everyone is has jumped on the 845 bandwagon
Re:Hey guy…I am just like you, but I have done a load of research on this in the last couple days….
check out anandtech review on i845 boards…they go so far as saying the pci lock is a waste on this board because it is a poor fsb overclocker and unlikely your pci cards will get out of spec enough to warrant it…
the top 3 I have found for ocing and features…check out my thread started in motherboards to see other features…
1) Asus P4B266 has good ocing, lock pci agp, and has best mem scores
2)MSI Ultra ARU
3) Gigabyte GA-8IRXP
Also do a search on northwood in general hardware…many in that thread oc'd very successfully…
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