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overclocking advice needed for intel p4 prescott

turboshed

turboshed

turboshed

Associate
Joined
27 Feb 2006
Posts
285
Location
Surrey
hi all,

i have a intel presscot 550 (LGA775) processor, running off a msi 925x neo platium motherboard and 1.5gb of ddr2 400mhz ram. I have tried to overclocking but i can only get to 3625mhz before the system freeze's. I was thinking maybe it's the ram (pc world ****). I was also looking at myabe getting a new motherboard the Gigabyte G1-Turbo G1975X and maybe some super fast ram e.g Corsair 2GB DDR2 XMS2-6400 TwinX which is verified to run at 800mhz!!!, i wanted to know what you people think i should be able to get now with my current setup or do you think spending a bit of money and get a new board and ram

thanks
jamie
 
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Oi Turboshed, welcome to the forums. You might want to read the forum FAQ before going much further in this community lest a mod wander along and become irked. :D

That said, I think you need to bump up the vDIMM or vCore to get much higher? What voltagess are you running?
 
550 should do close to 4Ghz ish with the right Ram on air cooling. As you have the 925X chipset that does not support the 1066FSB.

Look to get an Asus 975X/955X as that supports up to DDR2-800 as well as Xfire (for future upgrades). The Gigabyte you mentioned is also a good mobo to get. Asus are the worlds largest mobo company apparently although some of their support sucks they do @ least have a lot of web support resources + 3 year RMA warranty on these high end mobos.

The trick is to get @ least DDR2-533 Ram then either run it @ 1:1=1066FSB then lower your CPU multiplier to 14 (the Asus boards auto adjust it although you can manually overclock in 1Mhz increments and also manually adjust most of the voltages as well).

Better Ram will obviously mean a higher FSB and lower multiplier so less stress on the CPU as these new mobos can handle some serious speeds up to 1600FSB and maybe a little more on stocks volts even. With extreme cooling you could get 5.5-6Ghz out of your CPU.

Think the 5 series are not great ocers though. 6 series are much better + extra 1MB L2 cache & other improved instruction set + lower power useage/temps. Have a look around on this website for some extreme P4 overclocks to get a better idea of what the amazing potential can be!
http://www.xtremesystems.org/forums/forumdisplay.php?f=56
 
hi, can some one please help me out, i want to know why when i try and push my computer past 3608 it freeze's up, the processor runs at about 44c when idling at 3608Ghz. http://i50.photobucket.com/albums/f306/turboshed2006/8d5c5923.jpg that is a pic showing all voltage's etc. My ram is pc world pc3200, i have 2 x 512MB and 2 x 256MB and the timings are 5-4-4-12. My video card is a 256MB ATI X600 PCI-Express and i have a 400watt power supply

thanks
jamie
 
first off take out the 2x256 and just run 2x512 - Some boards have issues running 4 sticks.

Also we're going to need some more info , Motherboard, (unless i missed it)

Cooling, ambient temps, and info on your PSU, the 12v Rail to be exact.
 
Webzta said:
first off take out the 2x256 and just run 2x512 - Some boards have issues running 4 sticks.

Also we're going to need some more info , Motherboard, (unless i missed it)

Cooling, ambient temps, and info on your PSU, the 12v Rail to be exact.
Click to expand...

thanks for your reply,

motherboard is a MSI 925X Neo Platinum, I think my cooling is quiet good at the moment, i have 3 x 120mm fans and 5 x 80mm fans and then the standard cpu cooler. My ambient temp at idle is 20c and the processor sits at 35c. My PSU is a cheap one from pc world ( :mad: ) and is rated to 400w. what is it you want to know about the 12v rail and how would i find out - will it be listed on the PSU, there is some stickers on there i can have a look and let you know asap. I did notice that 1 of my 512 ram sticks is made by Hyundai Electronics and the other is made by Micron Technology. You can see here: http://valid.x86-secret.com/show_oc.php?id=76006 , would this hold me back?

thanks
jamie
 
That Ram will not oc very well. On Intel boards does not matter if you mix n match as the mem controller can handle the different sizes as long as they are all the same latency you can still run dual channel as well. Intel boards even handle mismatched ram fairly well just dont oc em.

As for your overclock most probably your Ram & or PSU are holding you back.

A 400W no name PSU for a power hungry Intel CPU like the 5 series is not a good combination.

Until you get a much stronger PSU would hold off ocing anymore as you run the risk of potentially damaging components.

To be honest even with an overclock your CPU is not gonna give you a huge performance boost anyway unless you get an extreme cooling system + expensive ram + decent PSU. Would be cheaper & less hassle to just get a faster gfx card.
 
The +12v Rail on the PSU Sticker, It should read xxA .

Yes you can mix and match with intel, but it still is common for a lot of motherboards to have issues with running 4 sticks of ram.

Memory won't really limit you much for a mild overclock, just use a divider.

Your case cooling sounds pretty good - however the stock heatsink is no-go and would be something which would need replacing if you were to start raising the volts at all.

You should get 4-500mhz o/c with no voltage increase, YMMV.

Also is your cpu a J ?
 
the 12v has a rating of 16A and 192watts max. My CPU is not a J. My mistake where i earlier said that my RAM is 400, i have since discovered that it's 533, it was boxed up as 400 when i bought it. I lowered my cpu multiplyer to 14 and can increase the fsb to 230 but thats about as far as i can go. When you say extreme cooling do you mean phasechanger cooling or water cooling or something else

thanks
jamie
 
OCZ Powerstream 520w is a very solid PSU, or there's a PC&C i think it is, 510?

Maybe someone can eleborate on that.

I would advise getting one with a strong Single rail, as opposed to dual rails.
 
You really need to overclock in Bios, not with the software, you have much more flexibility.

The processor is a 3.4GHz so getting up to 3.6GHz is quite disappointing, but before you go spending huge amounts of money, just be aware that that could be all that it's good for.

In the Bios, go to the Core Cell Menu and set the DDR speed to 533. That will stop your RAM being a factor in your overclocking.

You should be aware though, that the 925 chipset often doesn't offer any way to lock the PCI clock (33MHz) or the PCIe clock (100MHz) and that will hold you back.

Also - Intel built a locking mechanism into the 925X chipset that stops anything more than a 10% overclock! When you appreciate that most 2.8/3.0GHz E0 stepping P4s will yield an 800-1000MHz overclock, you can understand why. Most motherboard manufacturers implemented the lock in full. ASUS and Abit implemented workarounds, but I don't think that MSI did.

A 3.6Ghz machine is still pretty rapid though.
 
I oced my 3.8 to 4.5 on air with stock volts and the difference is not more than 5% in most games.

Most Intel overclocks do not give much more than a 3-7FPS boost in games and even then its dependent on your GPU (SLI or Xfire would see the biggest FPS boost anything else is usually less than 3-5% as most recent CPUs can keep up with a PCI-E gfx card unless you game @ 1600x1200 or higher).

Non gaming tasks like media encoding/ripping then yes you will see a benefit as long as you can keep the temps down. The 5 series were unfortunately the worst P4 for high temps. Thats why they got the 6 series out quickly!
 
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