Your opinion about possible P4 OC...

[MadTom]

Hi,

almost 1,5 years are over and my P4 1,6A is happily working at 2,13 GHz on my Gigabyte 8IGX since then (it went up to 150 FSB, but then some other components behaved strangely). Since the mobo can't fix the FSB/AGP at 33/66 MHz I didn't want to bring the other components into trouble, so the FSB is at 134 MHz.

However, this is a little bit to weak for my taste at the moment. So, I'm thinking of an 2,4/400FSB (up to 533 FSB), or a 2,53/533FSB P4, that hopefully would be able to go to FSB 166.

I guess I should go for a C1 at least, and look for a specific series. What is your opinion about this, what is the possibility to hit the desired, higher FSB?

Any special recommendations, ideas?

 

[myocardia]

All I can really tell you is that the two proc.'s you mentioned are both hard to find (at the "good" websites, anyway), and the 2.53 is supposed to be one of the worst OCers Intel has ever produced. Why not get a 2.4C or a 2.6C?

 

[MadTom]

Well, the 2,53 I was able to buy is sold. So there is a chance to get the 2,4/400FSB, still.

Anyone with OCing possibilities about that chip. At the moment I'm trying to find out if it's a B0 or even a C1.

 

[Duvie]

Actaully the 2.53ghz c1 stepping chip was a good ocer...around the same time as the 2.4b 533fsb chip and many could reach 3ghz with it...Heck thugs got his to 3.4ghz I believe...

The 2.4ghz has a nice large multiplier so high fsb wont be a problem for you since you likely wont get to 133fsb anyways...On the other hand that may be a problem since you have no agp/pci lock...


I say upgrade the mobo to at least a i845pe chipset which can take fsb's p to near 200fsb and give you some headroom and then find a c1 stepping 2.4b. (533fsb)...

 

[MadTom]

Originally posted by: myocardia
Why not get a 2.4C or a 2.6C?

Well, that would mean that I have to change my mobo and probably even memory, too... I have a 845G based mobo, and one single chip of 512MB Samsung DDR 333 memory, which actually works at 354MHz. It could be done with a divider, but thats not my main idea...

And, I'm a little bit limited on the budget, now... Not that I wouldn't like to go with a 865/875 setup with DDR433 or better RAM and a totally OCable CPU ;-)

 

[MadTom]

Originally posted by: Duvie


The 2.4ghz has a nice large multiplier so high fsb wont be a problem for you since you likely wont get to 133fsb anyways...On the other hand that may be a problem since you have no agp/pci lock...


I say upgrade the mobo to at least a i845pe chipset which can take fsb's p to near 200fsb and give you some headroom and then find a c1 stepping 2.4b. (533fsb)...

Let's see:
24x133=3192MHz (for the 2.4/400)
18x166=2988MHz (for the 2.4b)

Hmm, should I maybe go with a new 1.8A, which I can certify to be a C1 (or even D1). Do you think I could hit 166FSB with it?

 

[Duvie]

I haven't heard of the 1.8a (new one) much...If it was a c1 stepping chip it very well may make it to near 3ghz....I guess price and great deal may be the difference here....


I say shop in the forums and get one (2.4b) that a guy got to run 3ghz at default vcore...Most guys do not jack up price for ocing value since they don't want to warranty the OC and guarantee it....But buy from an established member which I have and the chip did what they did with it....

You got a good power supply???

EDIT: Ahhh...Acouple of those 1.8a d1 sepping chips I have seen around..one guy didn't get to3ghz and the other guy made it to 3.4 ghz....So like all OCing it is luck of the draw!!!

 

[MadTom]

Originally posted by: Duvie


You got a good power supply???

At the moment just a generic 400W PSU, but could use the 350W Enermax I have, too. Anyway, here I'm looking into a Tagan 480W or Enermax 465W.

It may be that with a new PSU I could come to FSB166 with the 1.6A I have. Dunno...

What do you think?

 

[MadTom]

BTW, Duvie. Are you awake overnight, didn't go to bed yet, or just woke up to early?

 

[MadTom]

I just bought this PSU.

Hope, this will make my OCing much more easier.

Will try to squeeze the 1.6A first. My idea is if BIOS voltage won't suffice to go to the 1.7V pin mod, and do max 1,75V afterwards. Should this be OK. It's a Northwood from 2002.

 

[Devlyn]

Originally posted by: Duvie
I haven't heard of the 1.8a (new one) much...If it was a c1 stepping chip it very well may make it to near 3ghz....I guess price and great deal may be the difference here....


I say shop in the forums and get one (2.4b) that a guy got to run 3ghz at default vcore...Most guys do not jack up price for ocing value since they don't want to warranty the OC and guarantee it....But buy from an established member which I have and the chip did what they did with it....

You got a good power supply???

EDIT: Ahhh...Acouple of those 1.8a d1 sepping chips I have seen around..one guy didn't get to3ghz and the other guy made it to 3.4 ghz....So like all OCing it is luck of the draw!!!

How do you tell what stepping it is?

 

[Duvie]

Originally posted by: MadTom
I just bought this PSU.

Hope, this will make my OCing much more easier.

Will try to squeeze the 1.6A first. My idea is if BIOS voltage won't suffice to go to the 1.7V pin mod, and do max 1,75V afterwards. Should this be OK. It's a Northwood from 2002.

That powersupply should fine for this chip and maybe the next...

I use to run the pin mod but that is only because I had mobos that undervolted like .05-.07v so my best bios setting of 1.7v at the time would only garner a 1.63v...At the tim I ran 1.71v with my 1.6a@2.74ghz....However I would not recommend over 1.7v at all and usually the added gain from 1.65v to 1.7v is not even worth it....If you don't plan on keeping it too long you can go over 1.7v to 1.75v range but beware....

 

[Duvie]

Originally posted by: Devlyn

Originally posted by: Duvie
I haven't heard of the 1.8a (new one) much...If it was a c1 stepping chip it very well may make it to near 3ghz....I guess price and great deal may be the difference here....


I say shop in the forums and get one (2.4b) that a guy got to run 3ghz at default vcore...Most guys do not jack up price for ocing value since they don't want to warranty the OC and guarantee it....But buy from an established member which I have and the chip did what they did with it....

You got a good power supply???

EDIT: Ahhh...Acouple of those 1.8a d1 sepping chips I have seen around..one guy didn't get to3ghz and the other guy made it to 3.4 ghz....So like all OCing it is luck of the draw!!!

How do you tell what stepping it is?

The SL code on the side of the retail box...Some retailers may help you out by looking for specific codes for you or listing it on their sites as a given sl code or stepping to sell to the ocing enthusiast....

 

[MadTom]

Thanks for the comments, Duvie.

I didn't do the voltage mod, since I got really strange behaviour with my CPU. I can run it at 150FSB at default voltage (but been worried about the 37/74 on the PCI/AGP), but it won't do 155FSB, even if I go down with AGP/PCI speed (voltage up to 1,68 actual, memory at DDR310 speed, with a divider of 5 this would be 31/62 respectively...).

So, I really don't know if it would work at 160FSB, at least, with really to high voltage (like 1,75V).

At the moment I left it at 140FSB (2240 MHz), DDR372 2-5-3-3, default voltage (says 1,47V in Windows).

BTW, in the local store they have this SL6QL 1.8A. Could this be a good overclocker in your opinion? The next option in the local store is an 2,66B. Since I'm in Croatia it's a little bit hard for me to buy through the forums, so I will probably stick to the local stores...

 

[MadTom]

Hi,

just today I bought an IS7-E for a cheap price. Hope it works. It's from a guy who wanted a SocketA board and somebody told him to go with the IS7-E...

Will let you know tomorrow what it does to my good old 1.6A .

 

[MadTom]

Ok,

moved 1.6A from 8IGX to IS7-E.

At the moment I'm at 150FSB (2,4GHz@1,5V - actual around 1,44V), RAM 4:5 (DDR 376 @ 2-6-3-3).

I left it overnight for memtesting and there where no problems at all. Few hours of prime95 passed well, but with 1,53V. Since I have had a little high temperatures (around 68C) I lowered the voltage and left Prime working. So, when I came from work I will see what happens.

Obviously, I have a temperature problem at the moment.

I see it coming - will change the Cooler, RAM to get a dual channel setup, and in the end opt for a new 2.4C or 2.6C...

Hope my wife will understand it...