2.8GHZ with AMD x2 3800+

[data-freak]

Hi,i recently went into the overclocking thing bought a new case with Gigabyte watercooling and must say it works awesomely..

I got my CPU from standart 2.0GHZ to 2.8GHZ stable.

cant get it further wanted to get to 3.0GHZ but after that it doesnt boot.

Is that considered a good overclock?

 

[dougie_boy]

an 800mhz??
very good. thats fx-62 speed.
try for 2.9 or 2.85 if u really want but for the sake of benchmarks id leave it where it is.

its pretty quick.

 

[adamthepolak]

considering that its an AMD cpu thats a really good overclock, most of the time ppl can only get it up to 2.2-2.4 range. can u post ur idle and load temps

 

[data-freak]

it runs at an idle temp of 22 degrees and could get it passed 34 degress with super pi 3dmark or pcmark and after an hour of far cry..

busy with a webiste to post screenshots

 

[m25]

considering that its an AMD cpu thats a really good overclock, most of the time ppl can only get it up to 2.2-2.4 range. can u post ur idle and load temps

:?: In most cases 90nm Athlons OC up to 2.7-2.9G, especially single cores can achieve these speeds pretty easily on air cooling if you look around. Only conroes beat them.

 

[Multiplectic]

I think he was referring to the X2 3800+, not the 90nm Athlons in general.

 

[m25]

OK but 2.6-2.8 is still the norm for them. Many people OC the X2 3800+ to 2.6
for prolonged periods.

 

[adamthepolak]

yes i was referring to the X2 3800 not the Anthlon single core and i based what i said on personal experience and what i've seen from ppl that i know personally. srry if the informations slightly off.

 

[ElMoIsEviL]

OK but 2.6-2.8 is still the norm for them. Many people OC the X2 3800+ to 2.6
for prolonged periods.

It's definitely not the norm. The avg is a 400-500MHz overclock.

This website took in averages and compilled charts.

 

[adamthepolak]

cool chart

 

[NaDa]

Yes but at what voltage??? I keep my x2 3800 at 2.45@1.4v.
At 2.55 it needs 1.475v at 2.6 it needs probably around 1.55v and thats WAY too much. I dont want to screw my mobo or PSU.

Chips OC to some margin then they need more and more voltage I would like to know how many off those ppl who have been able to hit 2.7-2.8 have hit that with only minor voltage boost (to 1.45) ??

This could be also mobo related I think there is a difference of even 200Mhz that a CPU will do on a different mobo.

 

[m25]

But Vcore is 1.35 and they send it to 1.45-1.50 for more than that. An we're talking about water cooling while those are the figures you get on air.

 

[m25]

Yes but at what voltage??? I keep my x2 3800 at 2.45@1.4v.
At 2.55 it needs 1.475v at 2.6 it needs probably around 1.55v and thats WAY too much. I dont want to screw my mobo or PSU.

Chips OC to some margin then they need more and more voltage I would like to know how many off those ppl who have been able to hit 2.7-2.8 have hit that with only minor voltage boost (to 1.45) ??

This could be also mobo related I think there is a difference of even 200Mhz that a CPU will do on a different mobo.

OK, not all CPUs are the same. I can keep my 3000+ @ 2.1G with 1.20V Vcore and it is ultra stable but I presume it's just my luck.
BTW; most 939 mombos don't have problems going to 1.55V because 1.50V is the nomial voltage of the onder 939 single cores.

 

[ElMoIsEviL]

But Vcore is 1.35 and they send it to 1.45-1.50 for more than that. An we're talking about water cooling while those are the figures you get on air.

He's not using a DIY kit.. he's using a gigabyte watercooling kit. Which means it probably performs about on par with todays high end water coolers.

And the Voltages quoted on the charts are not those used to overclock. They're the stock voltages quoted for each model number because some models differenciate in core voltages from one stepping to the other. So the CPUVID is only there so people can figure out what to expect from there particular stepping.

400-500MHz seems to be the norm for an X2 3800+ (the average) Watercooling doesn't help all that much when overclocking X2 Processors. I've found that you need to move towards moe extravagant cooling solutions to get the most out of X2 processors. I mean I thermo-electrically cool my X2 4800+ so that it can hit 3.2GHz. So yeah, they're not really good overclockers (compared to the competition that is).

 

[NaDa]

My mobo can go to 1.8V. That is what bios says puting something like 1.7v would probably make your cpu consume 200-300W. who knows. Can the voltage regulators keep that current or will they break??

Its not about the options in bios I say you have a gigabyte mobo and can run the cpu at 2.45 with 1.4v and then you get an ASUS premium mobo and that same cpu now runs 2.6 at 1.4v.
Its about the quality of mobos.

 

[m25]

Yes, I have to say it; they're not as good and even the A64 single cores are much better.

 

[m25]

Right. (My mombo is an ASUS BTW )

 

[ElMoIsEviL]

My mobo can go to 1.8V. That is what bios says puting something like 1.7v would probably make your cpu consume 200-300W. who knows. Can the voltage regulators keep that current or will they break??

Its not about the options in bios I say you have a gigabyte mobo and can run the cpu at 2.45 with 1.4v and then you get an ASUS premium mobo and that same cpu now runs 2.6 at 1.4v.
Its about the quality of mobos.

Anything above 1.45v is not recommended if you're not using some sort of extravagant cooling setup. You can do it, try it... but don't be surprised if you end up shortening the life of your processor.

1.50-1.55v is alot of heat. You're looking at around 133-140W of heat.

 

[ElMoIsEviL]

Yes, I have to say it; they're not as good and even the A64 single cores are much better.

MUCH better... You see far more Single Cores past 3Ghz then you do Dual Cores.

 

[capnbfg]

Wow, if 400MHz is the norm, then I am very happy with my overclock. I'm running an AM2 Athlon X2 3800+ @ 2.8GHz and 1.42V. My idle temp is 27C to 30C, with one core maxed it's 37C to 40C, and the highest temp I have seen is 43C (I can monitor the temp during benchmarks from mobo LED readout). My CPU cooler is the Arctic Cooling Freezer 64, and I have the Antec P180b case.

 

[NaDa]

Better cooling doesnt make higher voltage any safer.
Actualy the below zero cooling should kill the proc even better than air or water cooling.

Its not about the absolute temperature but the difference between the highest temp and the ambient one the processor cools to when its off.

 

[NaDa]

Try and run two instances of prime95 and set affinity for every core.

Impresive clock mate

 

[ElMoIsEviL]

Better cooling doesnt make higher voltage any safer.
Actualy the below zero cooling should kill the proc even better than air or water cooling.

Its not about the absolute temperature but the difference between the highest temp and the ambient one the processor cools to when its off.

In order to theorise you need to understand the fundamentals of what causes a processor to die slowly when voltages are raised. It's heat related. It's called electrical migration. The transistors (small gates) slowly cease functioning.

Super cooling your machine will ensure it lasts longer. Electricity flows more easilly on cooler circuits then it does on hot circuits. So the cooler the CPU the more easilly power runs through it. Also the more voltage you can implement seeing as electrical migrations is caused by heat & voltage combined.
OC Forums Northwood Sudden Death Syndrom

 

[Multiplectic]

So, in theory, sub-zero cooling won't do any harm to the CPU.
Like Phase-Change Cooling.

 

[ElMoIsEviL]

So, in theory, sub-zero cooling won't do any harm to the CPU.
Like Phase-Change Cooling.

So long as it's sealed.. In use Dielectric greese.

See the one thing that can kill it is Condensation.