Dont Oc a 3870x2 on stock cooling

Nitro-Max · Feb 12, 2008

Well i ran some tests on dual monitors with ccc panel open on one to monitor temps i ran counterstrike source on the other now the card is at stock i found running css in low detail only uses 2d clock speeds but still preforms great and max temps got to around 72c but only around 40% of the gpu was been used.

i then started css again but with everything up full aa & af the lot and again still preformed really well but now it uses the full 825mhz clock with gpu ranging from 40 to 60+% utilized but the temps get this 82c and this was just a few mins into the game at stock!!

So i would really advise not to overclock your 3870x2 at all on the stock cooler or it could be R.I.P. for your card.

OrbitzXT · Feb 12, 2008

Punctuation, please. A period, comma, something! Thank you for the advice though

Hawk1 · Feb 12, 2008

OrbitzXT said:
Punctuation, please. A period, comma, something!

LOL
My, someones in a pissy mood today.

Thanks for the info Nitro. Good to know.

OrbitzXT · Feb 12, 2008

Haha I'm just kidding around, but its difficult to read when I'm tired and just waking up. The only form of typing that really annoys me is when An Idiot Capitalizes The First Letter In Every Single Word. I Don't Know Why They Do It But I Just Find It Unbearable To Read. I Think My Brain Pauses With Every Word Seeing A Capital Letter And Thinks A New Sentence Is Starting.

mdm-adph · Feb 12, 2008

OrbitzXT said:
Punctuation, please. A period, comma, something! Thank you for the advice though

You left off a period there yourself, bud.

craigwhiteside · Feb 12, 2008

lol..................................................................

sums up the last few posts pretty well.

Nitro-Max · Feb 12, 2008

I just cant be botherd to be honest sorry if it upsets anyone if i was sat down writing a letter to somone then id pay attention to detail but on here i just cant be botherd lol ive got too used to shortening words its just bad internet habbits.

techbuzz · Feb 12, 2008

Nitro-Max said:
I just cant be botherd to be honest sorry if it upsets anyone if i was sat down writing a letter to somone then id pay attention to detail but on here i just cant be botherd lol ive got too used to shortening words its just bad internet habbits.

OMG@! That is hard to read...very straining on the eyes.

I agree with OrbitzXT.

Nitro-Max · Feb 12, 2008

pcgolfer85 said:
OMG@! That is hard to read...very straining on the eyes.

I agree with OrbitzXT.

am i botherd though??? i think not

techbuzz · Feb 12, 2008

Nitro-Max said:
am i botherd though??? i think not

cdawall · Feb 12, 2008

back on topic now

Hawk1 · Feb 12, 2008

Now, now, lets not go off on tangents here. It's first thing in the morning (for some of us), so time to get a mug o' java.

Whilhelm · Feb 12, 2008

In CCC when you were checking the temps and GPU usage did you check both cores. There is a dropdown box that lets you select each core and they may both be reading different. your readings may have been coming from the second core farthest away from the fan. I am sure the hot air coming off the first core is hitting the second heatsink and not cooling it as well. IMO both heatsinks should have been made of the same material Aluminum or Copper but I am sure Ati chose to do it that way for a reason. Yeah and i agree with you not to overclock this beast with the stock cooler at default fan settings becasue it won't go far at all before becoming really unstable.

Scrizz · Feb 12, 2008

how's the fan speed on the x2
if it's like the regular 3870, you're gonna need to up the fan

Whilhelm · Feb 12, 2008

I don't know if I am the only one but I cannot get Ati tool to work with the X2 so I can't mess with the fan settings. What other programs can you use to change fan speeds? It seems to me though that the fan is not spinning up anywhere near 100% under full load because when I boot the system the fan goes 100% at post for a few seconds and that is the loudest I have ever heard it.

newtekie1 · Feb 12, 2008

In W1zzard's review, he overclocked the card and got 918MHz out of it on the stock cooler. Temps hit 80°C on one core on his, but I'm sure he set the fan to 100%, the other core was a lot cooler though(just the nature of the cooling design).

80°C still isn't that bad, and nothing to worry about.

CY:G · Feb 12, 2008

ohh that sucks, i was planning on doing some light OC with the stock cooler, like newtekie said it can probably be done... hopefully ATI Tool works on mine...

Whilhelm · Feb 12, 2008

Ya I frequently saw temps in the 90s on my X1950pros and they seemed to be able to take it. Every once in a while Ati tool would randomly decide to turn off my video card fans completely. Luckily I noticed this as my temps were through the roof at 110! Still the cards work fine so 80 on my new 3870 X2 is not even that worrying to me.

trog100 · Feb 12, 2008

why on earth do folks think running at 90 C is will kill or damage a card.. also the fan speed will be dynamically controlled.. if the temps try and go up the fan will run faster..

can somebody produce some evidence that running at 90 C will damage a card..

can we also have some evidence of the same for a cpu.. i get bored with this mythical obsession with low temps.. i recon its time it was discussed sensibly instead of just being taken for granted and passed around..

my 1900xtx ran at 90 C without a problem so does my 3870.. so why the obsession.. ????

trog

Whilhelm · Feb 12, 2008

I agree with you for the most part but there is definatly a point where heat becomes damaging. Usually though the system will lock up/reboot before any serious damage is done. I know that Gpus in general are safe up to around 100 but if you can keep the temps below that then why not do so. It seems logical to me to keep the temps as low as finacially/physically possible.

trog100 · Feb 12, 2008

Whilhelm said:
I agree with you for the most part but there is definatly a point where heat becomes damaging. Usually though the system will lock up/reboot before any serious damage is done. I know that Gpus in general are safe up to around 100 but if you can keep the temps below that then why not do so. It seems logical to me to keep the temps as low as finacially/physically possible.

that is the beginning of reasonable discussion..

It seems logical to me to keep the temps as low as finacially/physically possible

lets add "reasonable" and "beneficial"l to that..

we can also add the "noise" factor....

i recon ati seem to think that reasonable "cost".. reasonable "noise" reasonable "temperatures" reasonably "life span".. all add up to cards running at 90 C...

so what is to be gained by attempting to lower that 90 C.. ???

ati havnt skimped on these cooler to save a penny.. they simply choose to run the fan noise free and target 90 C load temps..

sometimes the manufacturer uses the cooler to down grade a cards performance.. this isnt the case with ati 3870 cards x1 or x 2..

cool enough is the key.. as cool as possible isnt.. so whats wrong with 90 C..

trog

Whilhelm · Feb 12, 2008

90 C at stock settings is perfectly fine for this card but the problem that I have noticed is you get no overclocking headroom at all. My cards Cores can go maybe 15 or 20 Mhz faster but the temps start getting close to the 100s and that is where stability goes out the window on my card. So my main point was that if I can get the fan going faster and the card running a few degrees cooler then I may be able to attain a higher overclock. Weather or not the OC has a significant effect performance is just for curiositys sake. I am honestly happy with the cards performance at stock but it is always interesting to see how much extra speed you can get out of it. As for fan noise at full speed this card is still quieter then a pair of X1950pros on stock cooling. Those things start to get whiny at higher temperatures.

And from Atis' point of view I completly understand their decisions regarding noise and heat output becasue what they came up with obviously works fine. If they felt that 90 C was too hot either we would be looking at a different cooler design or hearing a much noisier fan.

Nitro-Max · Feb 12, 2008

Well me personally i aint willing to risk £280 for a few more fps the cost definatly out weighs the need. i touched the 2nd monitor socket during the test and that felt real hot to the touch so the gpus must be sizzleing.

Scrizz · Feb 12, 2008

oooo gimme gimme

Dr. Spankenstein · Feb 12, 2008

It does seem to flirt with the stability borderline.

When the card waits until 90C to start spinning up, I have noticed immediate freezes if you have overclocked/overvolted the cards because the temperature jump happens so fast that the threshold gets crossed before the card has time to react.

This was when I was attempting to use lower fan speeds. @100% fan it peaks at 71C under sustained load with the stock cooler.

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Dont Oc a 3870x2 on stock cooling

Nitro-Max

OrbitzXT

New Member

Hawk1

New Member

OrbitzXT

New Member

mdm-adph

craigwhiteside

Nitro-Max

techbuzz

Nitro-Max

techbuzz

cdawall

where the hell are my stars

Hawk1

New Member

Whilhelm

Scrizz

Whilhelm

newtekie1

Semi-Retired Folder

CY:G

New Member

Whilhelm

trog100

Whilhelm

trog100

Whilhelm

Nitro-Max

Scrizz

Dr. Spankenstein

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