How to make this cooler...

i have just run prime to get my comp under load and get the temps up...

temps are, 58,58,58,54
core speed 2798mhz
mulitplier 21x
core voltage 1.152v

i have turned prime off and these are the readings

core speed 1598.9mhz
multiplier x12
core voltage 0.928v
 
.:SAmSuNG:. said:
Its soo warm at the moment unless you have air in the loop i cant see the problem. These chips run very warm.
Click to expand...

yeah i know its warm but i just have it in my head that the temps are high and i want to clock to 3.8ghz and if i do clock it now the temps will go through the roof
 
.:SAmSuNG:. said:
Will they really though? Have you tried clocking it alittle to see how they sit? Most run around 80-85c load with water at around 4.2Ghz.
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I can't believe this at all. What are you basing your figures on?
I had a q9550 at 3.6 in the same loop as an overclocked 8800gt, and the processor was loading at 60. This is with a single feser 120 with a single fan and fairly normal ambients.

No longer what I believe, see edit:
Temperatures falling so much when you go up to 12V simplifies diagnostics. Clearly the problem you need to solve is the airflow through the radiator. Two good 120mm fans and two shrouds are now the most obvious thing to do from this point, and I think will resolve the issues you're facing. Lapping it will also help, but may well not be needed.

I use the scythe s-flex 1600s, currently one of them at 7V pushing through two stacked radiators. So I assume they're quite good for static pressue. Noctua's or yate loons are the most commonly recommended however, the latter because they're cheap.


edit: oh. Those were idle temperatures. Damn.

Loop might not be bled, but if its been running for quite a while it probably is.
Fans that sound like a plane at 12V suggest that airflow isn't the problem, though you haven't said which fans they are yet (that I can see?).
I'm going back to blaming the pump myself.

Pump is rated at 1.8m. That's not so good, the 10W laing ddc is 4m. The ek supreme is a very good block, but it is very restrictive, I've just realised Ive been assuming youre using the black ice extreme, and you're in fact using the thin swiftec one. That's also not good, for cooling or for restriction.


I'm going to have to hand this over to someone more experienced I fear. Neither your pump nor your radiator is very good, either could be the problem. That really agressive fans don't help suggests to me that its the pump. Shrouds are still good whatever the problem though.
 
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I dont think you understand how much heat these throw out. My cpu heats my whole room with only 1.15v. Plz try stick your clocks up to around 4Ghz with 1.3v and see what your load is like. If its well over 80 then you have air in the loop prolly.
 
Ah, but I can work it out. Bear with

OCed Watts = TDP x (OCed Mhz / Default Mhz) x (OCed Vcore / Default Vcore)²

let
TDP = 130
oc mhz =4000
oc vcore = 1.375
default vcore = 1.15


130 x 1.58 x 1.19565^2= 290W

So a fair working estimate is 300W. Ill be back shortly with how that compares to my old chip
 
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JonJ678 said:
I can't believe this at all. What are you basing your figures on?
I had a q9550 at 3.6 in the same loop as an overclocked 8800gt, and the processor was loading at 60. This is with a single feser 120 with a single fan and fairly normal ambients.

No longer what I believe, see edit:
Temperatures falling so much when you go up to 12V simplifies diagnostics. Clearly the problem you need to solve is the airflow through the radiator. Two good 120mm fans and two shrouds are now the most obvious thing to do from this point, and I think will resolve the issues you're facing. Lapping it will also help, but may well not be needed.

I use the scythe s-flex 1600s, currently one of them at 7V pushing through two stacked radiators. So I assume they're quite good for static pressue. Noctua's or yate loons are the most commonly recommended however, the latter because they're cheap.


edit: oh. Those were idle temperatures. Damn.

Loop might not be bled, but if its been running for quite a while it probably is.
Fans that sound like a plane at 12V suggest that airflow isn't the problem, though you haven't said which fans they are yet (that I can see?).
I'm going back to blaming the pump myself.

Pump is rated at 1.8m. That's not so good, the 10W laing ddc is 4m. The ek supreme is a very good block, but it is very restrictive, I've just realised Ive been assuming youre using the black ice extreme, and you're in fact using the thin swiftec one. That's also not good, for cooling or for restriction.


I'm going to have to hand this over to someone more experienced I fear. Neither your pump nor your radiator is very good, either could be the problem. That really agressive fans don't help suggests to me that its the pump. Shrouds are still good whatever the problem though.
Click to expand...

i will buy the shrouds this week, and see how i go, yes i am using the swiftech rad and the Swiftech Laing D5 Vario MCP655 pump
 
these are the tech spec's for the pump that i have

Nominal voltage
12 V DC

Operating voltage range 8 to 24 VDC
Nominal power (@ 12 V)
24 W

Nominal current (@ 12 V) 2 amps
Motor type Brushless, microprocessor controlled
Maximum head
10 ft (3.1 m)

Maximum discharge
~ 317 GPH (1200 LPH)

Connection size
½" barbs

Maximum pressure 50 PSI (3.5 BAR)
Temperature range 32 °F to 140°F (0 °C to 60 °C)
Electrical connector
Molex 4 pin

Weight
1.4 LB (650 gr.)

Impeller Housing material
Noryl®
 
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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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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Yes thats the pump
 
Does look rather like the radiator being the problem, the D5 is a very good pump. How much space do you have available? The swiftech 240 with another radiator added in series will perform admirably, at the cost of space and using more fans. A better 240 will improve things, but it's not looking like a 240 by itself can give particularly good temperatures from an i7 :(

Touch frustrating to end up with the same conclusion you reached in the first place, but oh well. Any hope of fitting a thick 240 radiator with fans and shrouds both sides, if you definitely cant fit another radiator anywhere? Not even a 120 over an exhaust fan say

As for buy shrouds, Im hoping you mean buy a couple of old, knackered 120 fans and tear the hubs out. Otherwise you're about to drop 20 quid on feser shrouds which is probably not what you want to do
 
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The fans that i have at the moment are spec'ed like this

The MCR-220 copper and brass radiator doubles the surface area available for heat convection into the air compared to a single 120mm radiator, and uses two 72 CFM 120mm fans, at a reasonable* sound noise level of 37 dBA.
 
37? Ouch, however they measured it that it's not good. I think you're going to have to find space to cram another radiator in, hope you're not using matx
 
JonJ678 said:
Does look rather like the radiator being the problem, the D5 is a very good pump. How much space do you have available? The swiftech 240 with another radiator added in series will perform admirably, at the cost of space and using more fans. A better 240 will improve things, but it's not looking like a 240 by itself can give particularly good temperatures from an i7 :(

Touch frustrating to end up with the same conclusion you reached in the first place, but oh well. Any hope of fitting a thick 240 radiator with fans and shrouds both sides, if you definitely cant fit another radiator anywhere? Not even a 120 over an exhaust fan say

As for buy shrouds, Im hoping you mean buy a couple of old, knackered 120 fans and tear the hubs out. Otherwise you're about to drop 20 quid on feser shrouds which is probably not what you want to do
Click to expand...

yes i was going to buy the feser shrouds, but what a good idea to rip out my old 120mm fans
 
.:SAmSuNG:. said:
Will they really though? Have you tried clocking it alittle to see how they sit? Most run around 80-85c load with water at around 4.2Ghz.
Click to expand...

What? Mine never gets to 80 on air cooling.

Also the idea of lapping is to lap both the cpu and the block/heatsink base so they are both flat for best contact.

You should really do more research before giving people advice.
 
Would you lap an intentionally bowed waterblock flat? I've been considering doing so to mine, and don't know whether to or not
 
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