P4 2.8 Overclocking

[nishi]

Hey guys!

I read through the forums and came across a lot of members who are RIDICULOUS are overclocking 🙂
I moved from Germany to America 1 year ago and bought a decent computer which I need to play CS with. Nonetheless, I'm having issues which I would like to get rid of by overclocking!

ASUS P4P800 w/ 865PE Chipset, BIOS 1016
Intel Pentium4 2.8 GHz (512KB Cache) with stock cooling (I got it up to 3.22 GHz)
1GB OCZ Rev3 Gold Edition PC3700
Leadtek GeForce FX 5950 Ultra 256 MB
Vantec 400W PowerSupply

I was wondering what I could do, to get it up to around 3.5 GHz , but STABLE! 😀


Thx so much,
nishi

 

[Sylvanas]

maybe a new heatsink, you cant go too far with stock cooling. also what voltages are you operating at? if your stuck, bump up the voltage, but keep an eye on your temperatures (sorry i dont know what temp you should stay under with intel)

 

[AdamK47]

I had a 2.8C at one time. I couldn't get it past 3.3GHz stable. I think it was from an older batch though. The newer ones should do 3.4 to 3.5 pretty easily. I decided to get the 3.2E and use the multiplier trick instead to use the same 14x multiplier thats on the 2.8. It got a little on hot side so I added some water cooling to it. It's been great at 3.71GHz so far.

 

[gururu]

Same here, 3.34 is the limit for me on the 2.8C.

238 FSB, 1.6V

5:4 cpu😀RAM ratio

this is on air with silicon thermal grease. I'm putting in some arctic silver today, I hope that helps a bit.

I ran at 3.4 for a while but 3dmark05 didn't like it. I can't imagine 3.5 and beyond without some water cooling.

BTW my cpu temps now are:

stable: 40 C
load: 65 C

 

[TStep]

I never had too much luck w/ 2.8Cs. 3.2-3.3 on the ones I had tried. They were however earlier models.

 

[nishi]

hmmmm, waht kind of heat sink should I buy? plz lemme know 😀

 

[TStep]

I have a Thermalright SP94, a little expensive, as is the monster newer ones (XP120??). The 900U and the 947U cool slightly less but are much less $$$. If I did it again, I would pick up one of the lesser models. I think the new Zalman's perform slightly better than the SP94. All are pretty good coolers though.

 

[psebas]

Dude, i have a ( what i call ) VALUE computer made with the cheapest components and i dont have any trouble overclocking my 2.8C HTT to 3.5 HT.

Here's how:

Processor - P43 2.8 512k with HT - 150 $
Memory - 2x 512 MB OEM ddr400 - 150 $
MOBO - Asus P4P800 s -SE ( P848 ) - 70$
Thermaltake P4 fan ( spark) - 20$ - ( running at 4000 rpm )

the trick is to lower the mem speed, by lowering from 400 to 320 Mhz i was able to oc my processor to 250( Bus) x 14 = 3.5 Ghz , and the memory after lowering to 320 jumped to 400 ( the difference of the bus also has impact on memory), so even if in BIOS i told my system to lower the mem with the new bis speed it jumps back to 400. Since i bought my computer it has been always at 3.5Ghz.

I could OC even higher but i don´t have any need for that now. The point is, that for 400$ i'll get a P4 3.5 ( BUS = 1000 !!!!! ) HT with 1 gb DDR400. U GOTA LOVE INTEL !!!!!!!! , is there any AMD lover able to mount a pc with the same performance for that price???

PS - with the money i saved in this components , i bought a ASUS AX 800 Pro.
If you wont to you can replace that MOBO for one with Double Data Rate (P865)

I live in portugal so sorry for my bad english.

 

[PhoenixOrion]

1. Check www.overclockers.com database for typical oc on similar chip.
2. Buy and install aftermarket cooling and use arctic silver.
3. Increase FSB at 1:1 divider until unstable.
4. Repeat #2 at 5:4.
5. With 1:1, start increasing vcore from default 1.52v.
6. Test each setting by loading cpu with prime95 or simple cpu test in 3dmark03.
7. If still unstable, start increasing vmem as memory and northbridge will want more juice at around 2.7- 2.8 (or higher, depending on memory).

Cheers!

 

[PhoenixOrion]

Originally posted by: psebas
Dude, i have a ( what i call ) VALUE computer made with the cheapest components and i dont have any trouble overclocking my 2.8C HTT to 3.5 HT.

Here's how:

Processor - P43 2.8 512k with HT - 150 $
Memory - 2x 512 MB OEM ddr400 - 150 $
MOBO - Asus P4P800 s -SE ( P848 ) - 70$
Thermaltake P4 fan ( spark) - 20$ - ( running at 4000 rpm )

the trick is to lower the mem speed, by lowering from 400 to 320 Mhz i was able to oc my processor to 250( Bus) x 14 = 3.5 Ghz , and the memory after lowering to 320 jumped to 400 ( the difference of the bus also has impact on memory), so even if in BIOS i told my system to lower the mem with the new bis speed it jumps back to 400. Since i bought my computer it has been always at 3.5Ghz.

I could OC even higher but i don´t have any need for that now. The point is, that for 400$ i'll get a P4 3.5 ( BUS = 1000 !!!!! ) HT with 1 gb DDR400. U GOTA LOVE INTEL !!!!!!!! , is there any AMD lover able to mount a pc with the same performance for that price???

PS - with the money i saved in this components , i bought a ASUS AX 800 Pro.
If you wont to you can replace that MOBO for one with Double Data Rate (P865)

I live in portugal so sorry for my bad english.

How does the bus speed jump back from 320 to 400??

 

[Thor86]

Overclocking is like the lottery. It's all luck of the draw with all cpus.

Report back to us on your P4P800 bios settings, especially the memory settings so we can further help you out in detail.

Make sure your AGP/PCI settings are locked to 66/33 at the very least if you are slowly increasing your fsb settings. Most Asus 865/875 boards do 250+ fsb easily.

Also, use Memtest to test memory stability and then Prime95 (two instances for HyperThreading) to test for max cpu heat/stability.

Have fun! :beer:

 

[psebas]

How does the bus speed jump back from 320 to 400??

Simple, by overclocking !!!. When you set the FSB speed from 200 to 250 what you'll get is 250 x4 ( P4 is quad bumped ) that gives you a FSB of 1000. The same goes to memory a computer with DDR 400 works @ the same 200Mhz but multiplies that with 2 (400Mhz). Now if you dont downrate from 400 to 320 you will get your mem working at 250x2 ( 500Mhz ) , and in my case it wont even boot at this speeds( remember that i am overclocking a P4 2.8 512k HT , the multiplier is 14x, and i use cheap ram ) .

By setting the mem in Bios to 320 Mhz ( 333) and overclocking the processor to 250 the mem will go to +/- 400 Mhz again , only this time it will be at 198 x2 ( 396Mhz to be precise 166 + OC values X2 ) and the good thing is that i can keep the latency at 2.5 ( over 400 and it will go to 3.0 latency )


It seems a little confusing but it isn't , all done in Asus Bios and verified in Sandra 2004.



My Machine Full Specs:

P4 2.8@800 OC to 3.5@1000
MOBO ASUS P4P800 S- SE (I848)
2 x 512MB OEM DDR400
ASUS AX800 PRO 475/900 @ 500/1000
SEAGATE 80GB 7200 ATA100
DVD-/+ R/RW SONY DRU 500XA
DVD - R/RW ASUS 8X
DVD ROM ASUS 16X ATA100
MONITOR TFT LCD LG L 1715S

3D MARK 2003 - 13 154
3D MARK 2005 - 4863

TEMP - 33 IDLE / 58 FULL LOAD
SB LIVE 5.1
STUDIO DV

 

[PhoenixOrion]

Originally posted by: psebas

How does the bus speed jump back from 320 to 400??

Simple, by overclocking !!!. When you set the FSB speed from 200 to 250 what you'll get is 250 x4 ( P4 is quad bumped ) that gives you a FSB of 1000. The same goes to memory a computer with DDR 400 works @ the same 200Mhz but multiplies that with 2 (400Mhz). Now if you dont downrate from 400 to 320 you will get your mem working at 250x2 ( 500Mhz ) , and in my case it wont even boot at this speeds( remember that i am overclocking a P4 2.8 512k HT , the multiplier is 14x, and i use cheap ram ) .

By setting the mem in Bios to 320 Mhz ( 333) and overclocking the processor to 250 the mem will go to +/- 400 Mhz again , only this time it will be at 198 x2 ( 396Mhz to be precise 166 + OC values X2 ) and the good thing is that i can keep the latency at 2.5 ( over 400 and it will go to 3.0 latency )


It seems a little confusing but it isn't , all done in Asus Bios and verified in Sandra 2004.

Gotcha.

Cliffnotes: Set divider for asynchronous.

 

[nishi]

hey!
thx for all the input


i didnt understand a thing because i'm a noob @ overclocking...

the only thing I changed in my bios was under JumperFree Configuration:

FSB from 200 to 235
I enabled Memory Acceleration Mode
CPU Voltage to 1.600 V
DRAM Voltage to 2.85V

I just installed 3D Mark 2001 and did I benchmark (@ 2.8GHz, i downclocked it again)

and I got 13,225 PTS ... dunno if thats ok :/