How to make this cooler...

You have nothing to lose but a few hours of your time.

Some people get a nice drop in temps from lapping, others get next to nothing.
 
mr_x_plosion said:
You have nothing to lose but a few hours of your time.

Some people get a nice drop in temps from lapping, others get next to nothing.
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You have a C0 or D0? D0's uses less voltage but runs warmer. Linx goes well over 80 with a noctua in push/pull with 4Ghz 1.15v. If you take a look in the heatwave thread most of the i7 set ups are between 80 and 90c load.

JonJ678 said:
Ahh. That's not this one then, I think multiple watercooling threads are confusing me. That sounds distinctly like a D5, which shouldn't be giving any problems at all. Does it look like this:
WC-004-SW_200.jpg



I've run the numbers for my old quad, and I get 155W. So the i7 you're playing with will throw out twice as much heat at 4ghz as mine did at 3.6, which is quite something but not ridiculous.
It gets a bit crude from here. But I had a processor at 150W and a gpu at whatever an 8800gt kicks out when clocked. Say conservatively 50W. So a 200W load placed on a single 120 feser sat around 60 degrees under load. A 240 radiator is generally slightly better than two 120's, so a decent 240 shouldn't struggle keeping an i7 by itself below 60 degrees, as it's coping with half the heatload but is twice as effective.


Howeve I spin the numbers I'm struggling to see 80 degrees as standard, where are you getting your numbers from Samsung?
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I said 4.2Ghz not standard.


Titan air cooler

psypher said:
um well.

just stuck blck to 200. ram to 1600. everything auto (turned off strap etc)

4ghz @ low-mid 50's idle. (voltage is 1.42 though in cpuz, so ill mess tomorrow with that)

did 1m pi in 10.2 :)


edit, tried 1.3v and it boots. lowered temps to high mid-high 40's aswell. bed time though
pushing a 75 load temp in prime :) make that 80.
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thermochill pa120.3 and a 120.2 black ice x-flow 120.2.... d-tek fusion v2 with a xspc full graphics block. Laing DDC 18W pump and EK DDC top.

ya mother said:
I havent clocked my 920 Do yet and the temps are between 40c-42c on idle? it is quite warm in my living room but thought it would be lower? what temps do they normally sit at on default?
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I read your post, I'm not sure you read mine.

I calculated for 4ghz, maximum voltage specified by intel, and got 290W. Given my 155W quad core in a loop with an 8800gt, which I cant find the wattage for, was loading at 20 degrees less with half than claimed the cooling capacity of a dual radiator I don't think your point works.

Backing up your point with a fenrir and idle, stock temperatures from water doesn't really support your point either, I still consider over 80W to be completely obscene for water cooling.
 
You can calculate all you want but the fact is these often run well into the 80's and most peeps over at XS aim to run a CPU only loop with a thick triple rad to cool it decent. Ima be putting a 285 and my D0 in a loop on a PA120.3 and i expect temps to be far from ideal.
 
This 'fact' currently looks like your opinion though. Xtreme consider a reasonable delta to be 5 degrees, hence using a triple by itself for it. I agree with them on this. But this does not mean that cpu block, double radiator, pump should be loading over 80 degrees.

I expect your temperatures will indeed be less than ideal, but presumably you also don't expect high 80s or would be sticking with air. I can't understand that your entire arguement pivots around 'water cools no better than air' which just isn't true

I shall calculate all I want, this is a mathematical exercise. Without calculation, all we have is strapping things together and hoping for the best. This is one of the few areas where the calculation isn't ludicrously difficult, so it seems foolish not to take advantage of it.
 
I know watercooling is better than air and I have a fair bit of experience with it (a lot more than air) but I don't think you are taking all the variables into account in these calculations to come to this conclusion. Iv ran a fair few 775 WC set ups and nothing has come close to the heat just the D0 dumps into my room.
 
There aren't any variables. It's looking at the difference between stock and overclocked, which cuts out the vast majority of the variables. Were I to try to calculate the absolute value, without being able to refer to the available tdp, I wouldn't have a prayer.

Did you run the 775 ones with the 285gtx? When I was using an air cooled 280gtx it heated the room effectively all by itself, despite the windows being open and it being winter.

The difference in heat between the 775s and the i7 is at the absolute most 200W, which is a couple of bright lightbulbs or three normal ones. Regardless of how hot you feel your room is, the difference just isn't that much. What temperatures are you getting on the water cooled D0 now, and what radiator/pump is it with?

Sadly Im on an amd dual core at the moment, so can't really appreciate what the heat wave is doing to people. Are you sure it isn't the very high ambients which are making your room feel hot rather than the i7?

Apologies to the op for going rather offtopic in your absense, sanity will be restored when we next hear from you :)
 
No im still on air at the moment but im comparing it to a 775 and 4870 Xfire or 4870X2 that dumped a lot more heat out than this 285. His temps are not great i totally agree and i would expect better from high end water but water seems to come into its own when you get into high clocks and voltage (compared to high end air). Sorry also for going off track. :) All i would advise is try bleeding more.
 
Ahh, I think we're more in agreement than I realised. Watercooling does seem to handle large loads exceptionally well, I think this is related to a radiator's heat dissipation being directly proportional to the water-air delta. Calculations agreeing with you there :p. You may well be right, going up to 4ghz will add far less to the processor temperature than doing it on air would do, so high starting temperatures aren't so scary.

The i7 throwing out twice as much heat as my quad does worry me, that may be reason to postpone upgrading. not seen it mentioned anywhere in the 775 vs 1366 threads either. I'm running a double and two singles, so might be starting to push my luck a little too far there.

More bleeding + shrouds then try clocking it and see is probably sounds advice. A new, thicker radiator is going to be around 50 quid, but would work a lot better with 7V fans. My fesers with 7V scythe s-flex are doing wonderfully, but handling a rather lower heat load than your i7. Hard to guess how they'll scale.
 
JonJ678 said:
Ahh, I think we're more in agreement than I realised. Watercooling does seem to handle large loads exceptionally well, I think this is related to a radiator's heat dissipation being directly proportional to the water-air delta. Calculations agreeing with you there :p. You may well be right, going up to 4ghz will add far less to the processor temperature than doing it on air would do, so high starting temperatures aren't so scary.

The i7 throwing out twice as much heat as my quad does worry me, that may be reason to postpone upgrading. not seen it mentioned anywhere in the 775 vs 1366 threads either. I'm running a double and two singles, so might be starting to push my luck a little too far there.

More bleeding + shrouds then try clocking it and see is probably sounds advice. A new, thicker radiator is going to be around 50 quid, but would work a lot better with 7V fans. My fesers with 7V scythe s-flex are doing wonderfully, but handling a rather lower heat load than your i7. Hard to guess how they'll scale.
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Well i agree, and my first choice to do is these

Noctua NF-S12 1200RPM 120mm Silent Case Fan
TFC Xtender - Radiator Shroud 120

and then see how that reacts, i dont think there is any air in the system there is no bubbles coming from the rad, and the header tank is clear of bubbles also, so unless the rad has got an air block then the system is bled right
 
Which rad to go for?

Black Ice GT Xtreme 240 Radiator
Thermochill PA120.2 120mm Double Radiator
TFC Xchanger - Double Radiator 240

i dont know why but i am drawn to either the black ice rad (danger den) or the tfc rad (feser)
 
I cant see there being much difference between the scythes and noctuas, either will do you proud. The tfc shrouds are very pretty but I probably wouldnt drop 20 quid on two of them, I bought 5 broken fans for a tenner delivered instead.

In theory at least, the D0 will run hotter than the C0 at the same voltage, but the C0 will run hotter at the same speed as it takes more voltage to get there.

I've seen rjkoneill recommend all three of them in different threads, there's very little to call between them. The dimensions are slightly different. Xpsc and thermochill are the same company now. I went with feser because of their support page on this site. It's not very link friendly, but they have engineering drawings of their radiators available for download, and a cad model. This is fantastic, exactly what I want from a company.
 
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JonJ678 said:
I cant see there being much difference between the scythes and noctuas, either will do you proud. The tfc shrouds are very pretty but I probably wouldnt drop 20 quid on two of them, I bought 5 broken fans for a tenner delivered instead.

In theory at least, the D0 will run hotter than the C0 at the same voltage, but the C0 will run hotter at the same speed as it takes more voltage to get there.

I've seen rjkoneill recommend all three of them in different threads, there's very little to call between them. The dimensions are slightly different. Xpsc and thermochill are the same company now. I went with feser because of their support page on this site. It's not very link friendly, but they have engineering drawings of their radiators available for download, and a cad model. This is fantastic, exactly what I want from a company.
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I must admit i do like faser items, and its all quality from them, so i might go with a feser 240
 
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