Haha! That's perfect, and looks pretty cool too :cool:.

I did over 2 hours of the heaven demo without interruption at all, and the 65*C temperature was the peak and held that temperature was constant for almost the entire duration with very little variation, and we can't say that it isn't a demanding DX11 techdemo/benchmark program...


The very first pass on the program is when the temperatures were still slowly and very gradually rising, then it stabilized and stayed that way for the next 20+ passes.

So when a game crashes to desktop you can be 100% sure that it's not your system and not complaining in the PC gaming section about a game being unstable when it is really your system. ;)

I had one overclock on a P45 that passed small fft but the MCH was mildly unstable. It ran fine for a while and eventually I started seeing artifacts in a couple of games. Even going back to stock speeds didn't fix it due to what I assume would be data corruption. I had to fine tune my oc and reinstall the os.

I think that it's safe to assume that is about what you will see in actual gaming. On a side note have you tried GPUtool's artifact scanner? It is my favorite utility to stress test a video card. In fullscreen it is just a bit more stressful than actual games.

I'm with you I never run furmark for more than a few minutes. I saw what that did with the vrms on my GTX280 on a uni-sink and there is no way for me to monitor them via software on my current card.

Hallaluya, brother!

I also used MSI's kombustor stress program, wich looks like furmark but also tests more features rather than just a spinning furry doughnut, and got the same temperature readings i did when running the heaven tech demo, so i got a long way to go until temperatures are even close to what they would be using the cards stock cooler.


Basically, if the overclock fails and the program crashes to the desktop, it won't be bacause the cards are overheating, but simply because they cards just can't handle the speeds period.

You know the higher you overclock, the cooler the card needs to be to stay stable. Why do you think people use liquid nitrogen. lol

Liquid nitrogen brings it's own set of problems, just like any other sub 0*C cooling method....Water condensation build up from the moisture in the air itself and freezing on any exposed metal, hence why you see all that ice forming around the pots for the CPU and GPU, but motherboards don't particularly like it for obvious reasons, and those who attempt it have to use tons of insulating material precisely for that problem alone....


Add the fact that you always have to top up the pots every 10~15 sec or so as the liquid nitrogen evaporates very quickly as it's absorbing the heat produced by the CPU and GPU(and even the ambient air for that matter)...


Add the special storage containers that liquid nitrogen requires, wich are usually rented and that a lot of LN2 will be used in the process of creating that new world record....


The most i'd ever try beyond straight water cooling would be using a water chiller made of an old A/C unit, but there the evaporator is modded to fit into a container that's part of the water loop, and the pressure switches left alone so the compressor works just like it always designed to, so that the temperature of the evaporator drops to just above 0*C(doing the same for the water in the cooling loop along with it), thus avoiding condensation issues using Ln2 or pelts...Obviously, the condenser has to be mounted outside the house with it's own fans to release the heat produced....With a lot of planning and elbow grease, it could work but that's as far as i'd take it....

Anyone else notice that Shadow is missing a 580?:D

lol. you really can't understand simple statements can you...

Here, let me break it down.

You might be able to hit 950mhz @ 75c load

You might be able to hit 1ghz @ 50c load

Pretty simple to understand for the average person.

:P


I said what keeps the card from eventually clocking higher isn't because it's overheating, and what you said has nothing to do with the card overheating in the first place, but how to get higher clocks period, in this case by going the sub 0 cooling route by means of liquid nitrogen..... Under those extreme mesures, the GPU is always operating well under 0*C even under load...:p ;) :lol:

:nuts:
You also added because they just can't handle the speeds. Sure, they can't handle the speeds at your high temps, but if you drop the temp like 20c+ it might just handle them.

Well if 65*C is considered high temps under load at 925Mhz, then what about the stock cooler and people still wanting to hit 850~900 Mhz clocks using nothing but that, wich by then, those GPU's are probably pushing well over 95*C under load....Suicide mode perhaps?..;)


Kinda puts it into perpective when you're worried about my overclocking performance and the GPU's not yet even getting into the 70*C range yet at 925Mhz doesn't it....:D

Shadow, I have to say that Roadhog is right.

The cards might do 950Mhz core at 75c, but that doesn't mean the cards will do 1Ghz at 75c. At 50c, it's possible.

Just because the cards can go up to 90c, doesn't mean at extreme clocks they can withstand that heat.

It can be a variable i suppose, but we were talking in overheating terms anyhow....The card isn't overheating in either case, as they were designed to operate at those temperatures.

I'll actually put up a picture of the original GPU cooler in my GTX580's tomorrow, wich is based on the reference card and just how small this thing is..


In any case, i'm already up to 950 Mhz on all 3 cards at 1.150 millivolts and load temperatures are up to 70*C, but i'll run it across more applications before deeming it stable....If this is as far as they can go, i'll be plenty happy as it is a 180Mhz GPU overclock over stock anyway...

Indeed, just backing up his statement there.

wow, 1.150 MV, thats extremely low voltage. :p

That's actually doing pretty good, When I had a single GTX480 with the Zotac cooler on it, I was running 875/2050 at 1100mv so he's doing better than I was.

Stock for the cards is 1.050 millivolts, so i'm up just under 10% over stock voltages for 950Mhz, wich is a 23% increase in clock speeds over stock....Not too shabby, but i'll increase speeds slowly and gradually over the coming days and find out the paractical day to day limit.


The modified Bios allows up to 1.213 millivolts, so i still have some room left there....:D

VOLTS

He'd be right if he removed the decimal point at least :p

Oh yes, I didn't even notice that. :lol:
I did it too! :cry:

Holy ****...Making an argument about decimal points..:nag:

:lol:
You've gotta be perfect, they're gonna get you on everything you do. You've got fans. :p

More like a true hater really, we all know who he is, and it's not just on this forum either....He's made appearances in others :p

His point is valid. Don't say "millivolts" when you mean "volts". You keep saying it over and over is why he corrected you so loudly.

What you may be meaning is the differences are measured in milli's because you're staying within a several hundred milli range. But if giving the total volts, say it in volts, even if it's only one + a little change. When I talk vcore, I still say volts even when it drops below 1, the decimal covers that base when it's still within rounding range of the full one. example : Saying ".95 volt" is easier then saying 950 millivolts.

17" 1680x1050 LCD
Intel Core i5 450m @ 3.2GHz
Radeon HD 5870 1GB GDDR5 RAM
4GB DDR3 RAM
320GB HDD
4.1 surround speakers with realtek HD
DVD Burner
120W PSU

Sweeeeet lappy! Nice choice, Hidavi!

Thanks. I got it in December for $1100, including 2 year warranty. Still plays all the new games on max :up:

I skimped on the res cuz I figured it wouldn't really be that big a deal.

badass laptop. :D

Thanks thanks. I kinda wish I had gotten the smaller GX660 now because that one is upgradeable to an HD 6970 with very minor modification. The power system in this one doesn't have enough spare juice for that upgrade.

Oh well, shouldn't be fiddling with a laptop in that kinda way anyhow :o

In two years I'll swap the Core i5 450m for a Core i7 840qm and I should be good to continue gaming my ass off :lol: