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[nextpage title=”Introduction”]

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 LPFigure 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 LPFigure 2: Accessories

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

Freezer 11 LPFigure 3: The Freezer 11 LP

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

[nextpage title=”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 LPFigure 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 LPFigure 5: Side view

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

Freezer 11 LPFigure 6: Rear view

[nextpage title=”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 LPFigure 7: Top view

Freezer 11 LPFigure 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 LPFigure 9: Base

[nextpage title=”Installation”]

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

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

[nextpage title=”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

  • Windows 7 Home Premium 64 bit

Software Used

Error Margin

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

[nextpage title=”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

Cooler Room Temp. Noise Speed Core Temp. Noise Speed Core Temp.
Intel stock (socket LGA1156) 14 °C 44 dBA 1700 rpm 46 °C 54 dBA 2500 rpm 90 °C
Cooler Master Hyper TX3 G1 14 °C 47 dBA 2050 rpm 33 °C 56 dBA 2900 rpm 62 °C
Zalman CNPS10X Extreme 14 °C 45 dBA 1400 rpm 27 °C 53 dBA 1950 rpm 51 °C
Thermaltake Silent 1156 14 °C 44 dBA 1200 rpm 38 °C 49 dBA 1750 rpm 69 °C
Noctua NH-D14 14 °C 49 dBA 1250 rpm 27 °C 49 dBA 1250 rpm 53 °C
Zalman CNPS10X Performa 14 °C 46 dBA 1500 rpm 28 °C 52 dBA 1950 rpm 54 °C
Prolimatech Megahalems 14 °C 40 dBA 750 rpm 27 °C 60 dBA 2550 rpm 50 °C
Thermaltake Frio 14 °C 46 dBA 1450 rpm 27 °C 60 dBA 2500 rpm 50 °C
Prolimatech Samuel 17 14 °C 40 dBA 750 rpm 40 °C 60 dBA 2550 rpm 63 °C
Zalman CNPS8000A 18 °C 43 dBA 1400 rpm 39 °C 54 dBA 2500 rpm 70 °C
Spire TherMax Eclipse II 14 °C 55 dBA 2200 rpm 28 °C 55 dBA 2200 rpm 53 °C
Scythe Ninja3 17 °C 39 dBA 700 rpm 32 °C 55 dBA 1800 rpm 57 °C
Corsair A50 18 °C 52 dBA 1900 rpm 33 °C 52 dBA 1900 rpm 60 °C
Thermaltake Jing 18 °C 44 dBA 850/1150 rpm 34 °C 49 dBA 1300 rpm 60 °C
GlacialTech Alaska 18 °C 43 dBA 1150 rpm 36 °C 51 dBA 1600 rpm 60 °C
Deepcool Gamer Storm 18 °C 43 dBA 1100 rpm 35 °C 48 dBA 1600 rpm 62 °C
Corsair A70 26 °C 56 dBA

1900 rpm 40 °C 56 dBA 1900 rpm 65 °C
Deepcool Ice Blade Pro 23 °C 45 dBA 1200 rpm 38 °C 52 dBA 1500 rpm 64 °C
AC Freezer 7 Pro Rev. 2 23 °C 47 dBA 1750 rpm 44 °C 51 dBA 2100 rpm 77 °C
Corsair H70 27 °C 60 dBA 1900 rpm 37 °C 60 dBA 1900 rpm 61 °C
Zalman CNPS9900 Max 27 °C 55 dBA 1600 rpm 38 °C 58 dBA 1750 rpm 63 °C
Arctic Cooling Freezer 11 LP 25 °C 45 dBA 1700 rpm 51 °C 49 dBA 1950 rpm 91 °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

[nextpage title=”Main Specifications”]

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

  • Application: Socket LGA775, 1155 and 1156 processors
  • Fins: Aluminum
  • Base: Copper
  • Heat-pipes: Two 6-mm copper heatpipes
  • Fan: 92 mm
  • Nominal fan speed: 2,000 rpm
  • Fan air flow: 27 cfm
  • Maximum power consumption: Not informed
  • Nominal noise level: Not informed
  • Weight: 10.5 oz (300 g)
  • More information: https://www.arctic.ac
  • MSRP in the US: USD 21.00

[nextpage title=”Conclusions”]

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.