OCed FSB and CPU on p4

[fsstrike]

For P4 3.4C owners, how high have u gotten ur FSB and CPU clock speed? And Has anyone here ever made use of DDR-500 or above?

 

[Duvie]

PastorJay I believe has had ram running 580mhz with 1:1 and a 290fsb.....Many have used 500ddr, but I see the problem is that the high cas latency and very expensive price and often high vdimm voltages needed can far exceed the benefits....DDR500 or above with cas 3 can be trumped by 400+ddr with tight cas 2 settings. Often times the lower ratios and therefore lower speed ram settings can lead to further overclocking and in many of our testing cpu speed trumps ram speed in most all aeas....


I have seen a few 3.4c's hitting the same 3.8ghz air limit. I don't think the 3.4c is really doinhg much better then what the last 3.0 and 3.2ghz chips were doing....Northwoods really are limiting out around 3.8 to 4.0ghz and that is why it is so crucila INtel pulls the head out and figures out its prescott issues can it needs to take us to the mid 4ghz range before Tejas takes us to 6ghz.....

 

[myocardia]

Haha, can't keep your house warm enough? Just buy a Prescott! Hey, if they don't get those heat issues squared away, they can forget about Tejas.:roll:

edit: But wouldn't 6ghz be nice?

 

[Duvie]

Originally posted by: myocardia
Haha, can't keep your house warm enough? Just buy a Prescott! Hey, if they don't get those heat issues squared away, they can forget about Tejas.:roll:

edit: But wouldn't 6ghz be nice?

I don't think it would be that bad....I have heard they have technologies under development that could help this but the problem is they are off in the horizon a bit...So basically what it comes down to is, fix the prescott or Intel and P4 wont be moving much in speed for quite awhile...I see loss in tons of marketshare, profit, etc.....Gloom but not Doom....

Ofcourse I wont be waiting for that ship as I will have migrated to 64bit Athlons long before then....I am waiting for overclocking boards and maybe some overclocking options on the dual opteron setups and I will be all over that....

I have always said, "what have you done for me lately"......

 

[myocardia]

Re: The Prescott's heat. All I know is that I've seen more than one person with a fairly high-end watercooling setup who tried to overclock one, and said they couldn't keep it cool. With watercooling! If you can't keep a chip cool enough with chilled water, how could you use it with only air-cooling? See my point? Of course, I don't buy chips without planning on OCing them. If you don't OC, that would be different.

 

[myocardia]

Oh, and I was going to answer one of your questions in my first post, but got sidetracked. Since the 3.4C has a 17x multiplier, you aren't going to be able to get higher than a 225mhz fsb using air as your only means of cooling it. And you won't get that high without a high-end heatsink and a 92mm Vantec Tornado fan. Also, for that chip, you wouldn't want or need PC4000 ram. You'd be much better off using PC3500, and running it 1:1, because PC3500 (the good stuff) has much, much better timings than PC4000 and up have.

 

[Margalus]

Originally posted by: myocardia
Re: The Prescott's heat. All I know is that I've seen more than one person with a fairly high-end watercooling setup who tried to overclock one, and said they couldn't keep it cool. With watercooling! If you can't keep a chip cool enough with chilled water, how could you use it with only air-cooling?

If you can't keep it cool with chilled water you don't know what your doing Even on air my 2.8E prescott does 3.6ghz 100% stable with a max temp under load of 44C using a thermalright slk-900U. On water, not chilled it gets a max of about 37C

 

[myocardia]

I'm not saying you're lying or even arguing with you, Margalus, but you're the first person on this forum that I've seen who says they have an air-cooled idle temp of less than ~45C. I don't know the difference, but even people like Thugsrook, and other P4 pro's at overclocking, couldn't keep a Prescott cool with only air (overclocked, of course).

 

[Margalus]

go to the following thread on the bbr forums and you can see some of my first results with the cpu http://www.dslreports.com/forum/remark,9369612~mode=flat

The pics in that thread are showing 118F/47C at 3.6ghz load due to a bad application of as5. I took the heatsink off and reapplied as3 and the load temps went down to the 111-112F range. Notice at 3.43 ghz before I put on the 'bad' as5 I was at 109F under load.

the boards used in that thread were an asus p4p800 deluxe and p4c800 E deluxe.