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Home » Corsair H75 CPU Cooler Review

Corsair H75 CPU Cooler Review

[nextpage title=”Introduction”]

The Corsair H75 is an entry liquid cooling system for processors. It has a 120 mm radiator with two 120 mm fans in a push-pull configuration. Let’s check it out.

The manufacturer describes the H75 as a compact liquid cooling system, aimed on users who want to take advantage of the flexibility of a liquid cooling system that can be installed inside cases not supporting big, high-end air coolers.

As with any sealed liquid cooling system, the H75 comes with the coolant liquid pre-filled inside the loop (block, radiator, pump, and hoses).

Figure 1 shows the box of the Corsair H75.

Corsair H75Figure 1: Package

Figure 2 shows the contents of the box: the radiator-block set, two fans, a Y-harness, a manual, and the installation hardware.

Corsair H75Figure 2: Accessories

This water cooler is discussed in detail in the following pages.

[nextpage title=”The Corsair H75″]

The sealed radiator-block system is shown in Figure 3. At the left is the radiator that transfers the heat from the circulating liquid to the air, and at the right is the block that transfers the heat from the CPU to the coolant liquid.

Corsair H75Figure 3: Sealed system

Figures 4 and 5 reveal the radiator of the Corsair H75. It supports one 120 mm fan at each side, and it is called a “slim” radiator by Corsair because its thickness is of 1.0” (25 mm).

Corsair H75Figure 4: Radiator

Corsair H75Figure 5: Radiator

[nextpage title=”The Corsair H75 (Cont’d)”]

Figure 6 shows the top of the block, where the pump that makes the liquid flow is integrated. The cable has a standard three-pin fan power connector, which draws power for the integrated pump. Notice that the holders for Intel systems come preassembled on the block.

Corsair H75Figure 6: Block

The base of the block, which is made of copper, is revealed in Figure 7. The thermal compound comes pre-applied.

Corsair H75Figure 7: Base

Figure 8 illustrates the 120 mm PWM fans that come with the Corsair H75 (120 mm, 2,000 rpm, 2.9 W, 54 cfm, 31.4 dBA).

Corsair H75Figure 8: Fans

[nextpage title=”Installation”]

In Figure 9, you can see the backplate for installing the H75 on Intel socket LGA775, LGA1150, LGA1155, LGA1156, and LGA1366 systems, with slideable nuts. Socket LGA2011 and AMD CPUs use the stock backplate.

Corsair H75Figure 9: Backplate

Place the backplate on the solder side of the motherboard and screw the four spacers shown in Figure 10 on the component side.

Corsair H75Figure 10: Spacers

As we mentioned before, the block comes with the holder frame for use with Intel CPUs preinstalled. If you will use the H75 on an AMD processor, you must remove this frame and fit the AMD one to the block.

The last step is to install the system inside the computer, attaching the block on the CPU using four nuts and the radiator on the rear panel. We installed both the fans outside blowing outwards.

Corsair H75Figure 11: Installation finished

[nextpage title=”How We Tested”]

We tested the cooler with a Core i5-2500K CPU (quad-core, 3.3 GHz), which is a socket LGA1155 processor with a 95 W TDP (Thermal Design Power). In order to get higher thermal dissipation, we overclocked it to 4.0 GHz (100 MHz base clock and x40 multiplier), with 1.3 V core voltage (Vcore). This CPU was able to reach 4.8 GHz with its default core voltage, but at this setting, the processor enters thermal throttling when using mainstream coolers, reducing the clock and thus the thermal dissipation. This could interfere with the temperature readings, so we chose to maintain a moderate overclocking.

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

We compared the tested cooler to other coolers we already tested, and to the stock cooler that comes with the Core i5-2500K CPU. Every cooler was tested with the thermal compound that comes with 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 panels of the computer case were closed. The front and rear case fans were spinning at minimum speed in order to simulate the “normal” cooler use on a well-ventilated case. We assume that is the common setup used by a cooling enthusiast or overclocker.

The sound pressure level (SPL) was measured with a digital noise meter, with its sensor placed near the top opening of the case. 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

  • Processor: Core i5-2500K
  • Motherboard: ASUS Maximus IV Extreme-Z
  • Memory: 16 GB G.Skill Sniper (DDR3-1600/PC3-12800), configured at 1,600 MHz
  • Hard disk: Seagate Barracuda XT 2 TB
  • Video card: MSI GeForce GT 210 1 GB
  • Video resolution: 1920×1080
  • Video monitor: Samsung SyncMaster P2470HN
  • Power supply: Seventeam ST-550P-AM
  • Case: Cooler Master HAF 922

Operating System Configuration

  • Windows 7 Home Premium 64 bit SP1

Software Used

  • Prime95
  • SpeedFan

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 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 full speed.

Cooler Room Temp. Noise Speed Core Temp. Temp. Diff.
Intel stock cooler 18 °C 41 dBA 2000 rpm 97 °C 79 °C
Cooler Master Hyper TX3 18 °C 50 dBA 2850 rpm 69 ºC 51 °C
Corsair A70 23 °C 51 dBA 2000 rpm 66 ºC 43 °C
Corsair H100 26 °C 62 dBA 2000 rpm 64 ºC 38 °C
EVGA Superclock 26 °C 57 dBA 2550 rpm 67 ºC 41 °C
NZXT HAVIK 140 20 °C 46 dBA 1250 rpm 65 ºC 45 °C
Thermalright True Spirit 120 26 °C 42 dBA 1500 rpm 82 °C 56 °C
Zalman CNPS12X 26 °C 43 dBA 1200 rpm 71 °C 45 °C
Zalman CNPS9900 Max 20 °C 51 dBA 1700 rpm 62 °C 42 °C
Titan Fenrir Siberia Edition 22 °C 50 dBA 2400 rpm 65 °C 43 °C
SilenX EFZ-120HA5 18 °C 44 dBA 1500 rpm 70 °C 52 °C
Noctua NH-L12 20 °C 44 dBA 1450 rpm 70 °C 50 °C
Zalman CNPS8900 Extreme 21 °C 53 dBA 2550 rpm 71 °C 50 °C
Gamer Storm Assassin 15 °C 48 dBA 1450 rpm 58 °C 43 °C
Deepcool Gammaxx 400 15 °C 44 dBA 1500 rpm 60 °C 45 °C
Cooler Master TPC 812 23 °C 51 dBA 2350 rpm 66 °C 43 °C
Deepcool Gammaxx 300 18 °C 43 dBA 1650 rpm 74 °C 56 °C
Intel stock cooler 18 °C 41 dBA 2000 rpm 97 °C 79 °C
Xigmatek Praeton 19 °C 52 dBA 2900 rpm 83 °C 64 °C
Noctua NH-U12P SE2 18 °C 42 dBA 1300 rpm 69 °C 51 °C
Deepcool Frostwin 24 °C 46 dBA 1650 rpm 78 °C 54 °C
Thermaltake Frio Advanced 13 °C 56 dBA 2000 rpm 62 °C 49 °C
Xigmatek Dark Knight Night Hawk Edition 9 °C 48 dBA 2100 rpm 53 °C 44 °C
Thermaltake Frio Extreme 21 °C 53 dBA 1750 rpm 59 °C 38 °C
Noctua NH-U9B SE2 12 °C 44 dBA 1700 rpm 64 °C 52 °C
Thermaltake WATER2.0 Pro 15 °C 54 dBA 2000 rpm 52 °C 37 °C
Deepcool Fiend Shark 18 °C 45 dBA 1500 rpm 74 °C 56 °C
Arctic Freezer i30 13 °C 42 dBA 1350 rpm 63 °C 50 °C
Spire TME III 8 °C 46 dBA 1700 rpm 70 °C 62 °C
Thermaltake WATER2.0 Performer 11 °C 54 dBA 2000 rpm 49 °C 38 °C
Arctic Alpine 11 PLUS 11 °C 45 dBA 2000 rpm 82 °C 71 °C
be quiet! Dark Rock 2 10 °C 41 dBA 1300 rpm 58 °C 48 °C
Phanteks PH-TC14CS 16 °C 47 dBA 1300 rpm 58 °C 42 °C
Phanteks PH-TC14PE 16 °C 48 dBA 1300 rpm 57 °C 41 °C
SilverStone HE01 (Q) 19 °C 44 dBA 1150 rpm 63 °C 44 °C
SilverStone HE01 (P) 20 °C 57 dBA 2050 rpm 62 °C 42 °C
Thermaltake WATER2.0 Extreme (S) 17 °C 44 dBA 1250 rpm 52 °C 35 °C
Thermaltake WATER2.0 Extreme (E) 17 °C 53 dBA 1900 rpm 50 °C 33 °C
Deepcool Neptwin 11 °C 46 dBA 1500 rpm 56 °C 45 °C
SilverStone HE02 19 °C 49 dBA 2000 rpm 64 °C 45 °C
Zalman CNPS9900DF 23 °C 45 dBA 1400 rpm 68 °C 45 °C
Deepcool ICE BLADE PRO V2.0 22 °C 43 dBA 1500 rpm 67 °C 45 °C
Phanteks PH-TC90LS 24 °C 47 dBA 2600 rpm 95 °C 71 °C
Rosewill AIOLOS 20 °C 40 dBA 1600 rpm 94 °C 74 °C
Corsair H60 20 °C 49 dBA 2000 rpm 64 °C 44 °C
Zalman LQ310 27 °C 51 dBA 2050 rpm 65 °C 38 °C
Noctua NH-L9i 24 °C 44 dBA 2500 rpm 95 °C 71 °C
NZXT Respire T40 20 °C 45 dBA 1850 rpm 76 °C 56 °C
NZXT Respire T20 21 °C 45 dBA 1900 rpm 77 °C 56 °C
Zalman LQ315 20 °C 52 dBA 1950 rpm 57 °C 37 °C
Corsair H80i (Quiet) 19 °C 44 dBA 1100 rpm 61 °C 42 °C
Corsair H80i (Maximum) 19 °C 57 dBA 2500 rpm 55 °C 36 °C
NZXT Kraken X40 (Silent) 25 °C 44 dBA 1050 rpm 66 °C 41 °C
NZXT Kraken X40 (Extreme) 25 °C 53 dBA 1650 rpm 62 °C 37 °C
Zalman LQ320 20 °C 52 dBA 2100 rpm 57 °C 37 °C
Corsair H100i (Quiet) 22 °C 45 dBA 1150 rpm 58 °C 36 °C
Corsair H100i (Maximum) 22 °C 61 dBA 2500 rpm 54 °C 32 °C
NZXT Kraken X60 (Silent) 26 °C 46 dBA 1000 rpm 62 °C 36 °C
NZXT Kraken X60 (Extreme) 26 °C 60 dBA 1650 rpm 60 °C 34 °C
Prolimatech Genesis Black Series 25 °C 46 dBA 1150 rpm 69 °C 44 °C
Phanteks PH-TC12DX 25 °C 51 dBA 1850 rpm 74 °C 49 °C
Corsair H90 23 °C 51 dBA 1550 rpm 61 °C 38 °C
Corsair H110 27 °C 58 dBA 1500 rpm 60 °C 33 °C
Evercool Venti 23 °C 49 dBA 2250 rpm 72 °C 49 °C
Thermalright Archon SB-E X2 22 °C 45 dBA 1400 rpm 68 °C 46 °C
Scythe Kabuto II 20 °C 41 dBA 1450 rpm 67 °C 47 °C
Prolimatech Megahalems Red Series 20 °C 51 dBA 1500 rpm 63 °C 43 °C
Zalman FX100 (fanless) 18 °C NA NA 98 °C 80 °C
Zalman FX100 (92 mm fan) 18 °C 50 dBA 2850 rpm 69 °C 51 °C
Gelid The Black Edition 21 °C 45 dBA 1650 rpm 66 °C 45 °C
Thermalright AXP-100 22 °C 42 dBA 2400 rpm 76 °C 54 °C
SilverStone NT06-PRO 19 °C 50 dBA 2400 rpm 72 °C 53 °C
SilverStone AR01 11 °C 46 dBA 2150 rpm 53 °C 42 °C
Cooler Master Seidon 120M 16 °C 52 dBA 2300 rpm 58 °C 42 °C
Enermax ETS-T40-White Cluster 16 °C 50 dBA 2200 rpm 63 °C 47 °C
Cooler Master Seidon 120XL 17 °C 54 dBA 2250 rpm 55 °C 38 °C
Cooler Master Seidon 240M 13 °C 59 dBA 2200 rpm 49 °C 36 °C
SilverStone AR02 9 °C 46 dBA 2800 rpm 60 °C 51 °C
Cooler Master V8 GTS 10 °C 51 dBA 1650 rpm 54 °C 44 °C
SilverStone TD03 16 °C 57 dBA 2350 rpm 54 °C 38 °C
SilverStone TD02 17 °C 57 dBA 2350 rpm 50 °C 33 °C
Corsair H75 29 °C 51 dBA 2000 rpm 71 °C 42 °C

In the graph below, 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.

Corsair H75

In the graph below, you can see how many decibels of noise each cooler makes.

Corsair H75 

[nextpage title=”Main Specifications”]

The main specifications for the Corsair H75 CPU cooler include:

  • Application: Sockets AM2(+), AM3(+), FM1, FM2, LGA775, LGA 1150, LGA1155, LGA1156, LGA1366, and LGA2011
  • Radiator dimensions: 4.7 x 6.0 x 1.0 inches (120 x 152 x 25 mm) (W x L x H)
  • Block height: 1.3 inches (33 mm)
  • Fins: Aluminum
  • Base: Copper
  • Heat-pipes: None
  • Fans: Two, 120 mm
  • Nominal fan speed: 2,000 rpm
  • Fan air flow: 54 cfm
  • Power consumption: 2 x 2.9 W
  • Nominal noise level: 31,4 dBA
  • More information: https://www.corsair.com/
  • Average price in the U.S.*: USD 80.00

* Researched at Newegg.com on the day we published this review.

[nextpage title=”Conclusions”]

The Corsair H75 behaved as expected for an entry-level liquid cooling system. It performed as well as the top performance air coolers and other value watercoolers we’ve tested to date. It outperformed its predecessor, the Corsair H60.

The H75 is also very easy to install and really flexible. It can be installed in virtually any case that fits a 120 mm fan. The noise level is fair.

The Corsair H75 can be a great choice if you are looking for a compact liquid cooling system. In small cases, it is a better choice than a huge high-end air cooler.

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