Cooler Master Eisberg 240L Prestige Review

Performance and Testing

Cooler Master Eisberg 240L Prestige Review

 

Performance and Testing

The test set up consisted of the following

Intel i7 3960X Stock@ 1.1v (undervolted) 4.0GHz @ 1.25v 4.4GHz @ 1.35v 4.6GHz @ 1.45v Gigabyte X79 UD3 Corsair Vengeance LP Memory Corsair HX850 V2 Corsair Force GT 60GB Coolermaster Storm Trooper. 

As usual we'll be testing our coolers at varying  levels of overclock and increasing levels of voltage.  this in turn of course means increasing levels of heat which the coolers need to dissipate.  To begin with we start with the undervolted stock speed.  Why undervolted? well if you have things set on "Auto", you may well be using more volts than are actually required to run at the chosen frequency, for example our 3960s will run quite happily at just 1.1volts, solid as a rock, 24/7, and as such we use this as our starting point.

Continuity is very important in testing, and for this reason we keep as many of the potential variables as locked down as possible.  We will be using OCCT in Linpack X64, AVX compatible with all logical cores tested and 90% free memory utilised. The test is set up to run automatically with just a few clicks to set it going.  A 10 minute idle followed by 30 minutes of testing and a 5 minute cool down is the order of the day and brings the total test time per clock speed to 45 minutes.  So as to remove subjectivity in determining whether a CPU has failed, OCCT is set to stop the test and register a fail should the max temp exceed 80 degrees.  In testing we noted that if even just one of the cores exceeds 82 degrees OCCT halts the test and a fail is recorded.

Although the Pump also had a 9v speed reducer we have conducted all testing of the pump at the full 12 volts. We have though conducted all tests at 3 fan speeds corresponding to 12v, 7v and 5v, making for a potential 12 tests which at 45 minutes per test makes for a grand total of 9 hours of testing.  If you want to run at the lower pump speed, expect a 2-3 Degree increase in temps across the board.  As you can see from the chat below, you can expect a 2 degree step in temp as you decrease the fan speed.  Even with the fans on their lowest speed the temps are quite reasonable, and comparable to other systems.  This is what we'd expect as there's really not a lot going on at 3.2GHz with just 1.1v trickling through the circuits

  

Turning now to the 4GHz test we up the voltage to 1.25 volts, this is what is deemed normally as stock volts. Something we are always harping on about on the forums is AUTO does not mean stock volts, and normally if you overclocking with "auto" volts the motherboard will be upping the volts much more than needed if you were to do it manually. By whichever means it happens, upping the volts (especially from our 1.1v undervolt) does have a big impact on temps, with an average increase of 10-15 degrees seen in the results.

As the Eisberg is essentially a hybrid, falling somewhere between a 240mm rad AIO and a custom system we'll be comparing it to both.  Unfortunately it seems not to be coping too well with the increased voltage the 4.0GHz brings, being about 4 degrees warmer than most 240mm systems.  More worryingly it's actually fallen behind the Noctua NH-D14 which as we all know is a conventional tower type air cooler.  Ok, it's pretty much the best out there but it's still an air cooler and it costs only half as much as the 240L

 

Upping the volts still further we achieve a stable 4.4GHz overclock at 1.35 Volts. It's here we start to separate the wheat from the chaff, with lesser coolers not able to disperse the increased heat effectively. Again we see a jump of 10 degrees or so from the figures at 4GHz. Both the H100 and the well-respected D14 are creeping into the 70s here, indicating that only the cream of the crop will excel at this level. 

Dropping the fans to their lowest setting saw the gap widen still further, with the Eisberg now lagging some 5 degrees behind the custom kits and 7.5 degrees behind the X60.  Again the 240L prestige is bettered by the NH-D14.

 

We have to admit that we were hopeful the 240L would make it to the 4.6GHz test, although we suspected it would be by the skin of its teeth.  Sadly it was not to be, even giving it best of 3 it failed to make it through the test with the temps maxing out after 18 mins and automatically bring the test to an end. 

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Most Recent Comments

30-09-2013, 05:49:35

tinytomlogan
http://www.overclock3d.net/gfx/artic...073825886l.jpg

Having reviewed the 120L back in June it's now time to take a look at the big brother, the 240L Prestige.

Continue Reading

30-09-2013, 07:03:20

barnsley
I'd expect a noisy pump with the cheaper seidon series, not with their upmarket eisberg coolers, good job coolermaster :/.

-edit-
If my seidon 120m is anything to go by, the seidon 240m would be a much better buy than this.

30-09-2013, 07:49:43

Excalabur50
Wow so glad I'm running a H100i after reading that

30-09-2013, 17:03:52

R0Y
I highly doubt if anybody who can afford a high-end system with a 3960X will be opting for a AIO at all, if extreme OC is the intention.

I think a mainstream 4670K or 4770K system might be a more reasonable test system for a AIO like this.

Also, some of the graphs aren't right. eg: H100i max and balanced @4GHz/1.25v

01-10-2013, 06:47:44

G-Dubs
Quote:
Originally Posted by R0Y View Post
I highly doubt if anybody who can afford a high-end system with a 3960X will be opting for a AIO at all, if extreme OC is the intention.

I think a mainstream 4670K or 4770K system might be a more reasonable test system for a AIO like this.

Also, some of the graphs aren't right. eg: H100i max and balanced @4GHz/1.25v
We run the tests on the 3960X because it's a "hot" chip, the idea being that if a cooler can cope with its thermal characteristics when Overclocked then it is most definitely going to be able to cope with other CPUs.

Secondly, to compare the performance of one cooler against another it's essential that all the tests are run under the same conditions and with the same hardware. Imagine if we ran GPU tests using different hardware and different test set ups and benchmarks etc. there'd be no continuity and as such no comparisons could be made which would render the whole thing pointless.

Having explained the reasons for two of your points, i'm going to let you go away and work out for yourself why the H100i results are as they are.

01-10-2013, 13:52:13

R0Y
Quote:
Originally Posted by G-Dubs View Post
We run the tests on the 3960X because it's a "hot" chip, the idea being that if a cooler can cope with its thermal characteristics when Overclocked then it is most definitely going to be able to cope with other CPUs.

Secondly, to compare the performance of one cooler against another it's essential that all the tests are run under the same conditions and with the same hardware. Imagine if we ran GPU tests using different hardware and different test set ups and benchmarks etc. there'd be no continuity and as such no comparisons could be made which would render the whole thing pointless.

Having explained the reasons for two of your points, i'm going to let you go away and work out for yourself why the H100i results are as they are.
Thanks for the reply. I understand the need for consistency. I was only suggesting that it would be nicer to see the hot-enough Haswell 4670K/4770K chips being used for the tests, since that would allow the majority of users (the ones who are actually likely to buy the cooler for their chips) to know the ACTUAL temps they can expect at their locations.

I still don't understand how "balanced" can be cooler than "max".

01-10-2013, 16:13:26

tinytomlogan
Short of testing everything on multiple sockets its not going to happen with 1150. We have used 2011 since it first come out and thats why there is so much info in the graphs.

Saying "use 1150 so people know" is also a bit off because there are too many variables

01-10-2013, 16:35:10

R0Y
Aah well. Thanks anyway.
Reply
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