Overclocking 2800+

Tolklein · Post by **Tolklein** » 23 Apr 2005, 18:32

As the topic says I have a 2800+ on a GA 7N400 Pro 2 board. I want to OC it, but it would seem I have hit some what of a snag, I can only overclock it via FSB to a max of 190Mhz.

I can flick the dip Switches on the Mobo 'till the cows come home, but they don't do jack.

I discovered that this is probably because my Chip is NOT pre week 39.

I also discovered that there is a way around this by shorting two of the chip pins.here

I was hoping that someone else has heard of this as well or even possibly done it themselves. It seems simple enough but I'd like a second opinion.

Any help would be appreciated.

Soap · Post by **Soap** » 23 Apr 2005, 18:35

I discovered that this is probably because my Chip is pre week 39.

That is great. Pre Week39/2003 chips are unlocked, or can be unlocked, so you can lower multiplier as desired. Did you set AGP at 66MHz? Did you increase the Vcore?

Tolklein · Post by **Tolklein** » 23 Apr 2005, 18:45

Sorry soap, somewhat critical typo error, my chip isnt pre week 39.

Post edited

Tolklein · Post by **Tolklein** » 23 Apr 2005, 19:16

My Vcore is set to max, 10% thats how I got my 2800+ to a 3200+, no I haven't set my my agp to 66Mhz, is that the default or OCed?

So it seems my only two options are either to increase the voltage some other way, which I have no idea how to do, or short the two pins (which seems like the easier option at the moment, seeing as how they even sell things to do itSpeed Strip)

Bobendren · Post by **Bobendren** » 23 Apr 2005, 19:32

66Mhz is default, make sure it's at 66MHz, as it is sensitive to ocing.

Tolklein · Post by **Tolklein** » 23 Apr 2005, 19:55

Oh, cause upping the FSB also ups the AGP, DIMMS and PCI, if I'm not mistaken.

I think it was set to normal, well a also upped my my GFX cards clock and memory and got 5300 or around that in 3dmark 03, a whole 300 extra. Which isn't all that much which is why a want to push it up. Would like to test it with Aquamark 3, but a 63Mb download on a 56k line. Eish...

Bobendren · Post by **Bobendren** » 23 Apr 2005, 19:59

Tolklein wrote:Oh, cause upping the FSB also ups the AGP, DIMMS and PCI, if I'm not mistaken.

yip. but there should be a option in the bios to keep them at their default frequencies when ocing. Should be called "fixed" or "locked" .

Tolklein · Post by **Tolklein** » 23 Apr 2005, 20:13

No fixed or locked setting, but i can set the DIMM to a percentage of the FSB and I can set the specific Mhz of the AGP. Going to try short the chip to unlock the mutlipliers, as soon as I build up the courage.

Soap · Post by **Soap** » 23 Apr 2005, 20:22

I know for a fact that ATI cards are somewhat more sensitive to higher AGP requencies than nVidia cards. And as you have a 9700Pro, I do suggest the following. You have a 2800+ which runs on an external 166MHz FSB, so the AGP divider is 5/2. A 190MHz FSB would give you a 76MHz AGP bus, which is already entering shacky territory. Lock AGP at 66MHz.

Tolklein · Post by **Tolklein** » 23 Apr 2005, 20:29

Oh so thats why my AGP temps rose 10C, and all this time I thought it was because I didn't put the thrmal paste on correctly or something.

So would a 66Mhz APG bus running at higher clock and memory speeds give better results in terms of stability AND performance?

Bobendren · Post by **Bobendren** » 23 Apr 2005, 20:30

u can't lock the dimms, only the agp/pci frequencies

Tolklein · Post by **Tolklein** » 23 Apr 2005, 20:54

According to my Mobo I can lock it at a percentage of the FSB

Soap · Post by **Soap** » 23 Apr 2005, 20:56

huh? GA 7N400 Pro 2 is a nForce2-based motherboard, so it should give you the option to run the AGP frequency at 66MHz.

Tolklein · Post by **Tolklein** » 23 Apr 2005, 21:16

Yes that is correct, I can set from 50Mhz onwards, I was refering to the DIMM's with the percentage thing

But I'm Confused. My chip has the date 1999. Does that tell me its date of production. Cause I only bought it about a year or so ago. Does that mean it was sitting on a shelf somewhere collecting dust for 5 years before i bought it? And that it is in fact a pre 39/03 chip by 4 years?
Were there even 2800+'s in 1999? Surely not.

So how do i see how old my chip really is then.

Edited to prevent copious amount of laughter at me as appose to with me

Bobendren · Post by **Bobendren** » 23 Apr 2005, 21:23

Tolklein wrote:According to my Mobo I can lock it at a percentage of the FSB

that's not techically locking it, coz it still changes when u change the fsb.

Nerevar · Post by **Nerevar** » 23 Apr 2005, 21:34

Bobendren wrote:66Mhz is default, make sure it's at 66MHz, as it is sensitive to ocing.

sensitive my ***
I have same CPU and mobo

I have my AGP @ 80 and PCI @ 40
FSB @ 200
CPU clock @ 11.5
Vcore + 1.69v
works well

avg temp 50 on Gigabyte 3Dcooler silent

Soap · Post by **Soap** » 23 Apr 2005, 21:43

Nerevar, you seem to be quite clued up. Probably because you've had several ATI cards at a 80MHz AGP already? Just because your nVidia card sustains this speed, it doesn't mean all cards do. And infact, only a few can. From all my ATI cards I had, none could work properly at a 80MHz AGP frequency. But if you don't lock the AGP/PCI ratios, you can aswell just get a KT600 board which costs less and doesn't have a locker. The asynchronous AGP is definitely the most important feature to overclockers.

Nerevar · Post by **Nerevar** » 23 Apr 2005, 21:45

well it works fine on a Radeon 9000pro, Radeon 9600pro and a Geforce 6600GT, personal exp

Bobendren · Post by **Bobendren** » 23 Apr 2005, 21:47

thanks soap.

well my mobo has the agp, pci and sata clock are all strung together like this: 66/33/100. the bios warns that sata devices are very sensitive to overclocking, hence my caution. plus every oc "how to" i've read continually instructs u to make sure that ithe pci/agp frequency is fixed.

Soap · Post by **Soap** » 23 Apr 2005, 21:48

Tolklein wrote:Yes that is correct, I can set from 50Mhz onwards, I was refering to the DIMM's with the percentage thing

But I'm Confused. My chip has the date 1999. Does that tell me its date of production. Cause I only bought it about a year or so ago. Does that mean it was sitting on a shelf somewhere collecting dust for 5 years before i bought it? And that it is in fact a pre 39/03 chip by 4 years?
Were there even 2800+'s in 1999? Surely not.

So how do i see how old my chip really is then.

Edited to prevent copious amount of laughter at me as appose to with me

No, 1999 was the year when the K7 architecture was introduced, it's not 4 years old. There's a code in the second line which says something like:
AKCA0115RPVW
The 0115 part is crucial here: In this example, my Duron 900 was made in the 15th week of 2001, which is by today's standards ancient already.
[last to letter's of year]+[week]=XXXX

Tolklein · Post by **Tolklein** » 23 Apr 2005, 21:58

I see, for a miute there I thought I was stuck in some kind of time space continuum, my chip reads, AQYHA 0401 TPCW. And due to all those years of reading the hardy boys I can deduce that my Chip is a Week 1 of 2004.

Which leaves my in my original pickle of tryin' to kick this thing into high gear.

Tolklein · Post by **Tolklein** » 24 Apr 2005, 00:31

After more reading, man my eyes are getting screwed, I learned that AMD did something called Superlocking to all there processors after week 36; 39; 42, everyone has there own opinion. But seeing as how mine was made in 2004 is there nothing I can do to increase the multiplier whatsoever? Is it Vcore only for little ol' me?

Pino · Post by **Pino** » 24 Apr 2005, 02:14

BAH!

Thats nothing

my 3000+ at 3200+ ( 12.0 X 400 )
AGP 100MHz

Soap · Post by **Soap** » 24 Apr 2005, 14:46

Tolklein wrote:After more reading, man my eyes are getting screwed, I learned that AMD did something called Superlocking to all there processors after week 36; 39; 42, everyone has there own opinion. But seeing as how mine was made in 2004 is there nothing I can do to increase the multiplier whatsoever? Is it Vcore only for little ol' me?

You could always mod your CPU into a mobile variant, which allows FSB and Multiplier adjustments on the fly, but do you really want to risk damaging your CPU?

Bobendren · Post by **Bobendren** » 24 Apr 2005, 15:45

You could always mod your CPU into a mobile variant, which allows FSB and Multiplier adjustments on the fly, but do you really want to risk damaging your CPU?

how exactly is that done?