Poor OC on a64 NC w/ DFI LP UT250GB

[FearoftheNight]

Can you guys recommend me on how to oc my chip? I'm at 10 x 230 atm. I'm using the divider to keep my memory below stock to see how much I can push the chip first before ocing the mem. Any advice on how I should change my oc approach? thanks.

 

[Dureth]

At 230 your HT will be running 5x230 = 1150 which is way above the 1000 stock for the HyperTransport. Lower your HT multiplier to 4x or 3x and try going higher.

 

[Jhatfie]

Originally posted by: Dureth
At 230 your HT will be running 5x230 = 1150 which is way above the 1000 stock for the HyperTransport. Lower your HT multiplier to 4x or 3x and try going higher.

Agreed. What are you running for voltages to the chipset and cpu? I assume you are running a 3000+? My older CO core needed 1.75v to reach 2.5ghz (250x10) with water cooling.

 

[FearoftheNight]

Guy I alrdy adjusted the HTT to 4x. Chipset is at stock and cpu is at 1.6 Yes its a 3000+ NC. Is voltage even safe past 1.6?

 

[Jhatfie]

Originally posted by: FearoftheNight
Guy I alrdy adjusted the HTT to 4x. Chipset is at stock and cpu is at 1.6 Yes its a 3000+ NC. Is voltage even safe past 1.6?

You might want to try and drop the HTT to 3x just to make sure there are no issues there and increase the chipset voltage slightly. I've ran my 3200+ at 1.75v for the last 6 months @ 2.6ghz almost 24/7 with no issues to date. You really want to make sure that you have good cooling though before you run over 1.6v on the cpu. You may want to adust the AGP frequency to 67mhz. Both my VNF3's and AN50R would not lock the AGP until I adjusted it although I cannot remember if my DFI required me to do the same thing. I generally just do it out of habit now. What do your temps look like?

 

[otispunkmeyer]

1.6v? eh my NC 3200 is only on 1.45-1.5 (depending on where i read from)

having said that, i can get 2.4ghz on my K8N-E deluxe, i tried booting at

FSB= 230, RAM = 230 (DDR460) HT 920mhz (stock is 800) and im using geil value ram

it posted but crashed when i logged on, i tried running at 225 and it logged on but froze during a test of 3dmark 01. not sure what it could be, i think the sata controller has trouble at 230 on the K8N-E , or maybe my ram needed more volts (think its 2.5v stock?) or maybe cpu needed more volts, or maybe it was the chipset getting too hot...its already very hot, and being next to a huge 6800GT from leadtek doesnt help i bet

i dont really know what im doing when it comes to overclocking though, i guess a stock 3200 is enough as it is anyway

 

[Avalon]

Like previously mentioned, see if setting your AGP to 67mhz helps. Also, if you have SATA, you'll need to plug your SATA cable into a different SATA port. I forget which ones, but this has to be done due to no SATA lock.

 

[otispunkmeyer]

right well i have 2 sata hard drives...they are on the nvidia sata ports, the silicom image controller ports are disabled, as i dont use them. i dont know how to run the ram at a diff speed to the fsb either

 

[FearoftheNight]

so tehres a diff going from agp 66 to 67?

 

[FearoftheNight]

anyone? explain further plz?

 

[jjzelinski]

From what I've read on older nforce chipsets (nf2 i think) only 67Mhz would actually LOCK your agp frequency when bumping up your FSB. Otherwise it would not lock.

For the record I'm having a similar problem, just upgraded to a DFI UT 250GB and a AMD64 3000+ (CO stepping unfortunately) and I can only reach 2.2Ghz without constant reboots before I even get to OS.

I've manually tweaked my DRAM (corsair value select PC3200 1GB kit) for looser timings, I've tried using 4 different freq dividers for mem, I've tried several different cpu multpliers, I've tried HTT multipliers all the way to to 1, I've tried bumping up my CPU voltage all the way to 1.7v even though I read anyting past 1.6v for a CO stepping was a no-no, but I can't break the 220mhz FSB barrier. The only way that will work in fact is if I use the 1:1 memory freq divider and I know this ram I have won't go past 220Mhz. I'm all ears with FearoftheNight here, any help would be appreciated.

 

[Neptune3000]

Set LDT to 3x

 

[CaiNaM]

Originally posted by: otispunkmeyer
right well i have 2 sata hard drives...they are on the nvidia sata ports, the silicom image controller ports are disabled, as i dont use them. i dont know how to run the ram at a diff speed to the fsb either

sata 1&2 should be able to do 240 (tho it's still possible it's holding you back); any higher you need to use sata 2&3

 

[FearoftheNight]

Originally posted by: jjzelinski
From what I've read on older nforce chipsets (nf2 i think) only 67Mhz would actually LOCK your agp frequency when bumping up your FSB. Otherwise it would not lock.

For the record I'm having a similar problem, just upgraded to a DFI UT 250GB and a AMD64 3000+ (CO stepping unfortunately) and I can only reach 2.2Ghz without constant reboots before I even get to OS.

I've manually tweaked my DRAM (corsair value select PC3200 1GB kit) for looser timings, I've tried using 4 different freq dividers for mem, I've tried several different cpu multpliers, I've tried HTT multipliers all the way to to 1, I've tried bumping up my CPU voltage all the way to 1.7v even though I read anyting past 1.6v for a CO stepping was a no-no, but I can't break the 220mhz FSB barrier. The only way that will work in fact is if I use the 1:1 memory freq divider and I know this ram I have won't go past 220Mhz. I'm all ears with FearoftheNight here, any help would be appreciated.

Yea I'm curious why set ldt to 3x when 4x still has it under 1000. Mines a CG Revision and I was having higher hopes.

 

[ts3433]

I don't think the NV SATA ports are locked, so move your drives to the other ones. Additionally, I'd try lowering the LDT to 3x because IIRC, the stock HT speed for a S754 proc is 800, not 1000. Also make sure you're using a divider (these may be notated as 100, 133, and 166 in your BIOS; divide by 200 to get the ratio).

 

[jjzelinski]

Originally posted by: FearoftheNight

Originally posted by: jjzelinski
From what I've read on older nforce chipsets (nf2 i think) only 67Mhz would actually LOCK your agp frequency when bumping up your FSB. Otherwise it would not lock.

For the record I'm having a similar problem, just upgraded to a DFI UT 250GB and a AMD64 3000+ (CO stepping unfortunately) and I can only reach 2.2Ghz without constant reboots before I even get to OS.

I've manually tweaked my DRAM (corsair value select PC3200 1GB kit) for looser timings, I've tried using 4 different freq dividers for mem, I've tried several different cpu multpliers, I've tried HTT multipliers all the way to to 1, I've tried bumping up my CPU voltage all the way to 1.7v even though I read anyting past 1.6v for a CO stepping was a no-no, but I can't break the 220mhz FSB barrier. The only way that will work in fact is if I use the 1:1 memory freq divider and I know this ram I have won't go past 220Mhz. I'm all ears with FearoftheNight here, any help would be appreciated.

Yea I'm curious why set ldt to 3x when 4x still has it under 1000. Mines a CG Revision and I was having higher hopes.

My chip just sucked, I bought a 3200+ and it runs at 2.6Ghz at 1.525V so I'm a happy camper now. Anyone want to buy a 3000+ that does 2.2ghz for about $125?