Max safe voltage for oc 2500+?

[Rukkian]

I am very new to overclocking, but in doing tests, I had to bump the voltage up to 1.75 just to get the fsb up to 175. Is this too high, or what should the highest safe volt be? My temps seem good, at full load with my fans at half speed, I only get to 48C.

TIA

 

[Soulkeeper]

i would say it is somewhere between 1.74 and 1.78v because i have killed a few athlon .13u chips around there (including a 2500+)
i think if you go over 1.7v you should be repared to accept the fact that the chip could die on you (maybe 6 months, a year, 3 weeks even)
but the bartons seem to like more voltage than the P4's right now (maybe because of strained silicon and more layers etc)

the chip shouldn't need that much voltage tho
usually 1.7 is enough for the bartons to hit the point of optimal returns imo

maybe your mem or chipset is holding you back
try upping the vdimm or vdd if you can in your bios
also mess around with mem timings try some slower ones like 2-3-3-11 or something to see where that takes you

have fun

 

[high]

took 1.75 to get to 177 fsb?? ew that is disgusting, my max for voltage is 1.85, but for every day I run my 2500+ @ 1.775, 1700+ @ 1.6...both are running at 11x213, 11.5x200 respectively

 

[GotIssues]

Absolute maximum voltage is techincally 2.1, I believe. I wouldn't take it past 1.85v. That is a perfectly safe voltage, as I have been running my Tbred at that for at least a year, and I have my Thorton at the same voltage. Its perfectly fine. After you get 2v+, you run a risk of burning out the gates of the processor.

 

[BlueWeasel]

Originally posted by: GotIssues
Absolute maximum voltage is techincally 2.1, I believe. I wouldn't take it past 1.85v. That is a perfectly safe voltage, as I have been running my Tbred at that for at least a year, and I have my Thorton at the same voltage. Its perfectly fine. After you get 2v+, you run a risk of burning out the gates of the processor.

<--- agrees

1.85v would be as far as I'd push it using air cooling, regardless of the HSF.

 

[MegaWorks]

I won't go over 1.8v with air cooling, but some of you guys push it to 1.85v without a problem well I don't know about that

------------------------------------------------------
AMD Athlon XP T-Bred B DLT3C 1700+ @ 2.3GHZ (1.775v) 400FSB = 3200+
Abit NF7-S V.2 (nForce2 U 400)
Corsair TwinX XMS 3200LL 512MB @ 2-3-2-6 (2.6v)
Sapphire Radeon 9500 Pro 128MB
Antec TrueBlue 480W
Thermalright SLK-947U with 92mm Vantec Tornado @2800RPM
Maxtor 91531U3 15GB
2x Western Digital WD400BB 40GB serials
Antec PlusView 1000AMG
Cambridge SoundWorks MegaWorks THX 550 5.1

 

[hytek369]

1.85v should be OK, by the time it burns out, you need a new system anyway

 

[MegaWorks]

Originally posted by: hytek369
1.85v should be OK, by the time it burns out, you need a new system anyway

lol! nice one

------------------------------------------------------
AMD Athlon XP T-Bred B DLT3C 1700+ @ 2.3GHZ (1.775v) 400FSB = 3200+
Abit NF7-S V.2 (nForce2 U 400)
Corsair TwinX XMS 3200LL 512MB @ 2-3-2-6 (2.6v)
Sapphire Radeon 9500 Pro 128MB
Antec TrueBlue 480W
Thermalright SLK-947U with 92mm Vantec Tornado @2800RPM
Maxtor 91531U3 15GB
2x Western Digital WD400BB 40GB serials
Antec PlusView 1000AMG
Cambridge SoundWorks MegaWorks THX 550 5.1

 

[ThetaOne]

Many users, including myself, run at voltages over 2v on water/phase change/etc.

The maximum air voltage is around 1.9v, simply because of temperature.

Voltage doesn't kill AMD chips (expcept for A64 with the Vdimm problems) - temperature does.

I'm currently running at 2.1v on a Mobile 2400+ Barton (.65v over spec), and many other users are running more voltage through them than that.

Keep your load temps under 50C, and you'll be just fine.

 

[MDE]

Anyone notice he's using PC2700 RAM? Try upping the VDIMM before you fry your CPU with too much voltage.

 

[adams828]

Originally posted by: MonkeyDriveExpress
Anyone notice he's using PC2700 RAM? Try upping the VDIMM before you fry your CPU with too much voltage.

yeah... that might be the ticket. i'd say give it a shot instead of upping vcpu so much. 175fsb isn't much of a stretch for a 2500+ to need that much juice

if it's just regular crucial, you may/may not get it up to 200 regardless of voltage

 

[Rukkian]

I loosened the timings on the ram and was able to hit 185 on stock voltage, so it was definately the ram, thanks for all the help. I do not want to do any massive overclock, or I would have spent more on the ram. I upgraded from a 1.33ghz athlon that I had for 4 years running 24/7.

 

[AkumaX]

1.85v is the magic number

 

[mato7742]

the problem might just be your memory if you think it's not stable, but yeah you don't need to raise your voltage at all to get to 177, that is just unreasonable. you could hit 200 with 1.65.

 

[Goi]

What about on the stock HSF? My load temps on my new NF7/2500+ setup is hovering around 50C and I'm only currently at 176MHz and 1.675V. VDimm is 1 notch up from stock too. I haven't really pushed it yet though since I'm on stock cooling.