A64 clocks well with stock volts, but... [Archive]

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Zyon

10-09-2005, 02:56 AM

wont go much further

CPU is an Athlon 64 3000+ socket 754 newcastle.

basically, i could run a 1mb superpi @ 2600mhz, 1.68v.

I decided to go back to stock volts. so i slowly went up with the HTT, and got resultant cpu speed up to a massive 2500mhz with stock volts (1.5v). this is stable at 8mb superpi. 2550 is stable for 8mb at 1.525v.

problem is that, even with 1.68v, i cant get 8mb superpi to complete for 2600mhz. thats just a small 50mhz increase, but yet it wont complete.

ideas?

ben805

10-09-2005, 03:00 AM

most cpu are like that, they'll do well with lower vcore but once they hit the wall then ramping up the vcore is not going to do anything regardless what cooling you used.

Vapor

10-09-2005, 03:00 AM

Overheating I would guess....try some voltages between 1.525 and 1.68. If that doesn't do anything for ya, that's what overclocking is....just be happy that your chips runs well at moderate voltages.

Zyon

10-09-2005, 03:04 AM

Overheating I would guess....try some voltages between 1.525 and 1.68. If that doesn't do anything for ya, that's what overclocking is....just be happy that your chips runs well at moderate voltages.

cpu gets to 52 max with a zalman 7000alcu with a 29 degree C ambient.

ive got an asus k8n mobo. would replacing the stock MCP (northbridge)heatsink have any effect?

SoF

10-09-2005, 06:05 AM

well have a look on your ilde and load temps.
as I'm just experiencing the HS will work good as long as there is not a big load (--> means stock voltage) on the processor.
The higher you will go the bigger the difference between idle and load temps.
Rip off the IHS and see what it does - you're just on air so it's pretty easy ;)

Zyon

10-09-2005, 06:28 AM

ozzimark

10-09-2005, 08:09 AM

i'm surprised nobody has asked the obvious:
what memory divider?
what ht link multi?
where does the board top out if you drop the cpu multi down two or three notches?

Zyon

10-09-2005, 03:30 PM

i'm surprised nobody has asked the obvious:
what memory divider?
what ht link multi?
where does the board top out if you drop the cpu multi down two or three notches?

heh, should have mentioned.

this is the 2500mhz, 1.5v run: http://img.photobucket.com/albums/v213/manifested/b5aa24fe.jpg

i get a bsod at 285*9 whilst booting windows.

mem divider, normally 333 (5/6), but for the purpose of the attempt at 2600mhz, i gave it a 266 (2/3) divider.

ht multi default is 4, drpooed it to 3. 2 or 1 wont boot.

Bloody_Sorcerer

10-09-2005, 04:13 PM

my 3200 newcastle does the same thing under water... with around 1.65 volts it'll do around 2.65 GHz but with even 1.8 volts it won't do anything higher... and it forces me to run 2T command rate above around 225HTT and my K8N Neo Platinum is just poopy and doesn't like running above ~255HTT...

Zyon

10-10-2005, 06:38 AM

i was also told that the cpu cooler does have an effect on the overclock. well, the temps do.

thats why vapochills get better oc's than air cooled.

wel, so im told.

time to get a 15 C ambient with aircon :banana:

SoF

10-10-2005, 08:04 AM

don't mix up too much....Vapochill/Mach is getting subzero...this is another world ;)
it's all about cooling when overclocking, you didn't know this before???

Zyon

10-10-2005, 11:18 PM

don't mix up too much....Vapochill/Mach is getting subzero...this is another world ;)
it's all about cooling when overclocking, you didn't know this before???

only know do i remember about it.

a small while ago, i was put on meds that made mw totally forget stuff, must have been one of them.

anyway, ill try aircon to test it out (Temps here in Aus are getting pretty warm, thus no more big overclocks :mad: )