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[LazyC]

1) 1.6A - 5/17/02
2) 2320 - 145 fsb
3) Asus P4B533
4) 1.56v
5) Asus PCprobe v2.17

At 150 fsb on default voltage, prime gives me an error after 1 hr. Almost made me cry... ( I so badly wanted to hit 2.4 ).

 

[Mikki]

Dejavu1025, you can run XMS 3000 or 3200, it just won't run at it's rated speed. That's pretty much the main reason people like the -V board, because it supports the memory ratio to allow you to run DDR 333 or 400. But yes, can can run pretty much any speed DDR memory in the P4B533 series boards.
HYH

Edit: if you're lucky, you can overclock your board enough that you can get your memory running at rated (or faster) speeds.

 

[THUGSROOK]

oh im sorry - yes Mikki is correct.

the P4B533 is now easily hackable for 3:4 memory ratio.
it can now run 400+ddr for overclockers - check my sig.

 

[Dejavu1025]

Thanks guys for the reply. So you're saying that unless I overclock the ratio (which I guess I have to figure out what that is and how to do), the 333 DDR will be running at 266?

 

[IntelInsideIdiotOutside]

Pentium 4 1.6a march 2002
2.4Ghz
Asus P4B533
1.53V
Asus PCProbe 2.16.02

Say Thug where can I find info on the P4B533 ratio hack? Thanks.

 

[ThreeEagles]

Well I am up to 150 FSB at default voltage on a P4B533. I haven't tried to push it past that yet; 2.4 was my goal. Props to Thugs, oldfart, mikki and all you other guys that inspired me to take the plunge. Upgrading from 550 MHz->2.4G is like waking up from a bad dream...

I bought XMS3200 for this system so I'm interested in how to do the 3:4 hack too

Edit: Duh, look at the forum stupid. 3:4 hack

 

[IntelInsideIdiotOutside]

Originally posted by: ThreeEagles

Edit: Duh, look at the forum stupid. 3:4 hack

AHA thanks. I dont like looking around a lot

 

[wingtel]

we are always talking about which motherboard is best for oc,what about buying the intel cpu.Any special tactics like batch numbers,where it was made or just luck of the draw.win some ,lose some

 

[jbond04]

You can never lose with a P4 Northwood... My 2.53 is up to 2.85 at default voltage.

 

[Dejavu1025]

I see that a lot of you have the Northwood chips and are getting great results. I have a regular 478 pin 1.8 Ghz P4. Can this chip be overclocked and how much more speed can I get? Would the overclocking procedure be the same as the Northwood chip? Thanks in advance for your help.

 

[Dejavu1025]

One other thing. Would any PC3000 or PC3200 DDR work or does it have to be Corsair XMS... ? The price difference is at least $60 for an OEM vs. Corsair.

 

[jdurg]

Dejavu1025, you would not be able to overclock your Willamette P4 anywhere close to where you could overclock the Northwood. As I'm sure you know, the Northwood CPUs are built on a .13 micron core as opposed to the .18 micron core of the Willamette. That relates into the Northwood needing less "juice" and running much cooler than the Willamette P4s. Also, the 1.8 GHz Willamette is close to the maximum speed that the Willamettes can achieve. As a result, there's not much headroom before you reach the physical limits of your chip. Therefore, I'd say that you might be able to get 1.9 GHz out of your CPU, and if you're lucky, maybe 2.0 GHz.

The Northwood P4s can overclock very well because they are a new "style" of CPU and the 1.6A and 1.8A are the lowest rated Northwoods out there. As a result, they have a TON of headroom before they reach their physical limit. Same can be said for the 2.53 GHz version. (First in the series of Northwoods to run exclusively on the 533 MHz front side bus.)

So if you want to try and overclock, you would do it the same way as the Northwoods are overclocked because all of the P4 chips are multiplier locked. However, don't keep your hopes up for more than a 100 MHz overclock. Sorry.

 

[Dejavu1025]

Thanks Jdurg for the reply. I was so looking forward to overclocking my first P4. Oh well, I'll keep my eyes out for the Northwood chip. BTW, just to make sure, on my chip it says 1.8 Ghz, since there's no A designation, it's a Willy, right? For future reference, my question regarding Corsair vs. OEM PC3000 DDR, is it necessary to buy Corsair or would an OEM do just fine in overclocking. Thanks again.

 

[jdurg]

The difference between a Willamette P4 and a Northwood P4 is actually pretty easy to see on the chip itself. On the chip itself, look at the very top line of letters/numbers. (The line written directly underneath Pentium 4.) If it is a Northwood CPU, the very last set of numbers on that line will be 1.5V. If it's a Willamette, it will be 1.75V. Also, on that same line, after the speed designation, there is the designation of the cache. For a Northwood, it will be 512. For a Willamette, it will be 256. So if your CPU has both 512 and 1.5V on that top line, then you have a Northwood. If those two sets of numbers don't exist, then you have a Willamette.

As for your RAM question, I'm not too sure. Just because it's OEM doesn't mean that it is of a lesser quality. If you knew which company actually produced the RAM chips, it'd be easier to tell. However, PC3000/PC3200 isn't really officially supported by very many P4 DDR chipsets, if at all. (Somebody please correct me if I'm wrong.) So basically, either one should run just fine in an overclocked environment. (Just avoid MSI motherboards because they give you jack-shit for memory ratios. :| My 1.8A@2.52 GHz CPU is being choked off by a measly 2.0 GB/s memory bandwidth, and there's not a damn thing I can do about it until MSI gives me A memory ratio for my 845 Ultra-ARU board.)

 

[jdurg]

I think I realized why I stopped browsing these boards for a while. I hate seeing people getting to 2.52+ GHz using default voltage on their 1.8A when I had to crank my voltage to the max of 1.71 in order to get 2.52 GHz. I am so tempted to just go and buy a new 1.8A chip and hope that I get a good one. But I think I'll hold off because 1) my CPU is still running at 2.52 GHz which is insanely fast, and more importantly 2) I have no one that I could sell off my current CPU to. I hate constantly wanting to fiddle with my machine. lol

 

[jdurg]

From reading all these results, I think it further solidifies my theory that ALL of the 1.6A and 1.8A Northwoods were just lower rated 2.0A or higher Northwoods. Of all the default voltage overclocks, mine was the lowest at 1.998 GHz. (Which for all intents and purposes is 2.0 GHz.) This also coincides with the fact that the spec sheets for the Northwood CPUs don't include the 1.6A and 1.8A processors. So I think that it's a pretty safe guarantee that all of the 1.6A and 1.8A CPUs can overclock to 2.0 GHz. (Those who have not must have some other hardware problems limiting their overclock.)

 

[THUGSROOK]

jdurg ~ agreed. and it wouldnt be out-of-line to say a 1.6A or a 1.8A could literally be "anything".

 

[CrazySaint]

Originally posted by: jdurg

The Northwood P4s can overclock very well because they are a new "style" of CPU and the 1.6A and 1.8A are the lowest rated Northwoods out there. As a result, they have a TON of headroom before they reach their physical limit. Same can be said for the 2.53 GHz version. (First in the series of Northwoods to run exclusively on the 533 MHz front side bus.)

Don't you mean the 2.26B is the first of the 533MHz FSB Northwoods?

 

[PhoenixOfWater]

1.8 5/10/02 (I think)
2160MHz/120 FSB
Asus P4B533
Asus PCprobe

 

[jdurg]

Originally posted by: CrazySaint

Originally posted by: jdurg

The Northwood P4s can overclock very well because they are a new "style" of CPU and the 1.6A and 1.8A are the lowest rated Northwoods out there. As a result, they have a TON of headroom before they reach their physical limit. Same can be said for the 2.53 GHz version. (First in the series of Northwoods to run exclusively on the 533 MHz front side bus.)

Don't you mean the 2.26B is the first of the 533MHz FSB Northwoods?

Oops. My bad. Nice catch.

 

[Su1c1da1]

Just got my setup today

1.6A norwood 5/02/02 pack date, made in Malaysia i think.
@2400 150FSB using PC2100 ram (2 stick of 128s, 1 Hynix? 1 samsung) <-- Will try higher later, running Prime95 for a few hours now, no error. Lets see how high my pc2100s go
Asus P4B533
1.5 Default Voltage
Asus PC Probe 2.17.01

 

[anonmouseuser]

1.6A - 04-30-02
2399.92Mhz / 150FSB / 4:5(DDR 375)
EpoX 4G4A+
1.54V
Motherboard Monitor


I am pretty happy with the above OC. I am currently running the above configuration. My Sandra scores were as follows:

CPU - 4580 / 2953
Memory - 1397 / 1459

I think the memory score is unusually low. It beats a PC800 but I had assumed that I would get atleast 2500+ I would appreciate a few suggestions.

Many thanks to gsethi for providing me with the 'Overclocking for Dummies' guide.

 

[SupermanCK]

i finally backed down with no wire mod...
i just double checked that i can't run default voltage at 150fsb...i need 1.550 for prime95 to run stable...sad...

 

[THUGSROOK]

anonmouseuser ~ are you using the latest version of sandra?
that would explain your lousy mem scores. (sorry)

 

[Su1c1da1]

wow!!! a push of this little dipswitch #6 on my P4B533 mobo and my mem score went from 1300s to 2250!!!!!!!! thanks thug!!!