Arctic Cooling Freezer 11 LP CPU Cooler Review
By Rafael Coelho on January 27, 2011


This time we've tested a low profile CPU cooler from Arctic Cooling: the Freezer 11 LP. It has two heatpipes and a 92 mm fan. Let's check its performance!

Like most Arctic Cooling products, the Freezer 11 LP package is actually a plastic blister, as you can see in Figure 1.

Freezer 11 LP
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Figure 1: Package

In Figure 2, you can check the accessories that come in the box: the cooler, installation parts, a case sticker, and a manual.

Freezer 11 LP
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Figure 2: Accessories

In Figure 3, you can see the Freezer 11 LP.

Freezer 11 LP
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Figure 3: The Freezer 11 LP

In the next pages, you will see this cooler in detail.

The Freezer 11 LP

In Figure 4, you see the front of the cooler. The copper heatpipes are visible here, connecting the base to the top of the heatsink.

Freezer 11 LP
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Figure 4: Front view

In Figure 5, you have a side view of the cooler. Note how this is a low profile cooler (hence the "LP" on its name), being only 2.1" (53 mm) high.

Freezer 11 LP
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Figure 5: Side view

In Figure 6, you check the rear side of the cooler, where the tips of the heatpipes are visible.

Freezer 11 LP
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Figure 6: Rear view

The Freezer 11 LP (Cont’d)

In Figure 7, you see the top of the cooler and, in Figure 8, the fan that comes installed. It has a four-pin connector, so it is PWM-compatible. The is no suspension or anti-vibration mechanism.

Freezer 11 LP
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Figure 7: Top view

Freezer 11 LP
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Figure 8: Fan

The base of the Freezer 11 LP is made of copper, and makes direct contact to the heatpipes. The thermal compound comes preapplied on the base.

Freezer 11 LP
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Figure 9: Base


To install the Freezer 11 LP, first you need to attach two supporting pieces on the motherboard, as shown in Figure 10.

Freezer 11 LP
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Figure 10: Frame installed

After that, put the cooler over the CPU, and then fasten the four available screws, attaching the fan frame to the supports on the heatsink.

Freezer 11 LP
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Figure 11: The Freezer 11 LP instaled in our case

How We Tested

We tested the cooler with a Core i7-860 CPU (quad-core, 2.8 GHz), which is a socket LGA1156 processor with a 95 W TDP (Thermal Design Power). In order to get higher thermal dissipation, we overclocked it to 3.3 GHz (150 MHz base clock and 22x multiplier), keeping the standard core voltage (Vcore), which was the maximum stable overclock we could make with the stock cooler. Keep in mind that we could have raised the CPU clock more, but to include the stock cooler in our comparison, we needed to use this moderate overclock.

We measured noise and temperature with the CPU idle and under full load. In order to get 100% CPU usage in all threads, we ran Prime 95 25.11 (in this version, the software uses all available threads) with the "In-place Large FFTs" option.

We compared the tested cooler to the Intel stock cooler with a copper base (included with the CPU), as well as with other coolers. Note that in the past, we tested coolers with a socket LGA775 CPU, and we retested some "old" coolers with this new methodology. This means you can find different values in older reviews than the values you will read in the next page. Every cooler was tested with the thermal compound that accompanies it.

Room temperature measurements were taken with a digital thermometer. The core temperature was read with the SpeedFan program (available from the CPU thermal sensors), using an arithmetic average of the core temperature readings. During the tests, the left panel of the case was open.

The sound pressure level (SPL) was measured with a digital noise meter, with its sensor placed 4" (10 cm) from the fan. We turned off the case and video board cooler fans so they wouldn't interfere with the results. This measurement is only for comparison purposes because a precise SPL measurement needs to be made inside an acoustically insulated room with no other noise sources, which is not the case here.

Hardware Configuration

Operating System Configuration

Software Used

Error Margin

We adopted a 2 °C error margin, meaning temperature differences below 2 °C are considered irrelevant.

Our Tests

The table below presents the results of our measurements. We repeated the same test on all coolers listed below. Each measurement was taken with the CPU at idle and at full load. In the models with a fan supporting PWM, the motherboard controlled the fan speed according to core load and temperature. On coolers with an integrated fan controller, the fan was set at the minimum speed on the idle test and at full speed on the full load test.


Idle Processor

Processor at Full Load

CoolerRoom Temp.NoiseSpeedCore Temp.NoiseSpeedCore Temp.
Intel stock (socket LGA1156)14 °C44 dBA1700 rpm46 °C54 dBA2500 rpm90 °C
Cooler Master Hyper TX3 G114 °C47 dBA2050 rpm33 °C56 dBA2900 rpm62 °C
Zalman CNPS10X Extreme14 °C45 dBA1400 rpm27 °C53 dBA1950 rpm51 °C
Thermaltake Silent 115614 °C44 dBA1200 rpm38 °C49 dBA1750 rpm69 °C
Noctua NH-D1414 °C49 dBA1250 rpm27 °C49 dBA 1250 rpm53 °C
Zalman CNPS10X Performa14 °C46 dBA1500 rpm28 °C52 dBA1950 rpm54 °C
Prolimatech Megahalems14 °C40 dBA750 rpm27 °C60 dBA2550 rpm50 °C
Thermaltake Frio14 °C46 dBA1450 rpm27 °C60 dBA2500 rpm50 °C
Prolimatech Samuel 1714 °C40 dBA750 rpm40 °C60 dBA2550 rpm63 °C
Zalman CNPS8000A18 °C43 dBA1400 rpm39 °C54 dBA2500 rpm70 °C
Spire TherMax Eclipse II14 °C55 dBA2200 rpm28 °C55 dBA2200 rpm53 °C
Scythe Ninja317 °C39 dBA700 rpm32 °C55 dBA1800 rpm57 °C
Corsair A5018 °C52 dBA1900 rpm33 °C52 dBA1900 rpm60 °C
Thermaltake Jing18 °C44 dBA850/1150 rpm34 °C49 dBA1300 rpm60 °C
GlacialTech Alaska18 °C43 dBA1150 rpm36 °C51 dBA1600 rpm60 °C
Deepcool Gamer Storm18 °C43 dBA1100 rpm35 °C48 dBA1600 rpm62 °C
Corsair A7026 °C56 dBA1900 rpm40 °C56 dBA1900 rpm65 °C
Deepcool Ice Blade Pro23 °C45 dBA1200 rpm38 °C52 dBA1500 rpm64 °C
AC Freezer 7 Pro Rev. 223 °C47 dBA1750 rpm44 °C51 dBA2100 rpm77 °C
Corsair H7027 °C60 dBA1900 rpm37 °C60 dBA1900 rpm61 °C
Zalman CNPS9900 Max27 °C55 dBA1600 rpm38 °C58 dBA1750 rpm63 °C
Arctic Cooling Freezer 11 LP25 °C45 dBA1700 rpm51 °C49 dBA1950 rpm91 °C

In the graph below, at full load you can see how many degrees Celsius hotter the CPU core is than the air outside the case. The lower this difference, the better is the performance of the cooler.

Freezer 11 LP

Main Specifications

The main features of the Arctic Cooling Freezer 11 LP CPU cooler include:


The Arctic Cooling Freezer 11 LP has a cheap aspect from the start, beginning with its package. This situation isn't helped by the preapplied thermal compound or by the installation procedure without using a backplate.

The main problem, however, is that the Freezer 11 LP doesn't provide a good performance. It kept our CPU about 10° C cooler than the Intel stock cooler, which is not too much considering this stock cooler is very "weak". On the other hand, the good news is that the Freezer 11 LP is a very quiet CPU cooler.

The only situation where the Freezer 11 LP can be a good choice is for near-silent HTPCs with low-profile cases and low-consuption CPUs. If this is not your case, you must look for a different product.

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