Thermalright HR-07 Memory Cooler Review

Cooling/VGA & Other Cooling by thorgal @ 2007-01-27

Thermalright is known as a very competent and successful manufacturer of aftermarket cooling gear. Today, we take a look at their latest gem, the HR-07 Memory Module Cooler. This passive cooler is made to cool your ram beyond any stock heatsink or heat spreader. Have a look and see if it surpasses its daring intentions...

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Installation cont'd, Test setup

Installing the cooler on the memory module

After our little handy work with the hairdryer, we're presented with the naked memory stick:

Madshrimps (c)

First thing you've got to do now is clean the surface of the memory sticks a little bit, as there is a lot of glue residue still present. You could use some pure alcohol for example. After the cleaning we can move forward to the actual installation. First of all we have to apply the thermal pads to the memory sticks. Since our memory is double sided, we apply the two thin thermal pads of 0,3mm thick:

Madshrimps (c)

After that it's simply a case of sliding the HR-07 over the thermal pads. Thermalright designed their memory cooler just so that it would fit right over the memory chips with the thermal pads applied, while applying just a little pressure on the memory chips so the cooler wouldn't slide off, and maintain a good thermal transfer from the chips to the cooler.

So this is what the HR-07 looks like when installed onto an OCZ memory module:

Madshrimps (c)

Test setup

For the testing of the Thermalright HR-07, we put together a test system around the latest Intel CPU and motherboard:

Test Setup
Madshrimps (c)
CPU Intel QX6700 Core 2 Quad
Cooled byAlphacool xtreme pro H20 set
Mainboard Intel D975XBX2 (Bad Axe 2, stock)
Memory 2x 1024Mb OCZ PC6400 "ATi Certified" (4-4-4-15)
cooled by Thermalright HR-07
Connect3D X1900XT CF
cooled by Alphacool NV-XP3 H20 block
Lian-Li PC70
Case cooling : four 80mm SilenX iXtrema fans
2x 120Gb Maxtor S-ata RAID0
Nec DVD-RW drive
Silverstone Zeus 750W PSU

Our test system was slightly overclocked from the stock 2.66Ghz (266x10) to 3.3Ghz (330x10) on the Quad Core, while the graphics card was overclocked a little as well. The memory is running synchronous to the front side bus, and runs at 4-4-4-12 timings at 330Mhz. This system is sure to produce some heat, and by water-cooling it we made sure the impact on the memory cooler is as small as possible. The airflow inside the case is only influenced by the case fans, and not, as would be usual, by the processor cooler. The performance of the memory cooler can thus be expected to be slightly lower than they normally would be when air cooling for the CPU is applied.

The installation inside the case of the memory modules with the HR-07 applied was not very difficult, especially because the PC70 is a very large case. Much depends on the layout of your motherboard as well, as I had to install the coolers with the heatpipe directed upwards. The other way round was not possible, because the graphics card slot of the Intel D975XBX motherboards is directly adjacent to the memory slots, and therefore the spacing between memory and graphics card is almost non existing. The Intel "Bad Axe" board is in that respect one of the worst boards, so you should be able to install the HR-07 on almost all motherboards.

As you can see on the picture of the setup, and in the thumbnails below, dual channel installation poses no problem as well. The coolers are narrow enough to allow installation in slots 1 and 3, or 2 and 4. Installation of 4 coolers next to each other is obviously not possible. The only real problem that could arise installation wise is the presence of a large cpu-cooler, which could interfere with the HR-07. Especially big, flat round cpu coolers like the Zalman 7000 series could pose a problem.

Madshrimps (c) Madshrimps (c) Madshrimps (c) Madshrimps (c)
some close-ups of the installed HR-07 on our test setup

Head over to the next page to see how they did in our test session ->
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Comment from Rutar @ 2007/01/27
once again stock heatspreaders are tested to be worthless

What was the voltage you have been using?

50° isn't a temperature that I think is capable of limiting overclocks on memory but should change if you give the memory the 2.4+ extreme people use.
Comment from thorgal @ 2007/01/27
Originally Posted by Rutar View Post
once again stock heatspreaders are tested to be worthless

What was the voltage you have been using?

50° isn't a temperature that I think is capable of limiting overclocks on memory but should change if you give the memory the 2.4+ extreme people use.
The voltage used for the ATi kit is 2.15V in bios. The motherboard does overvolt a little, the real voltage was close to 2.2V. As you say, with Micron ram at 2.4V+ the situation will be quite different temperature wise, but will still be in favour of the Thermalrights.

You've made a necessary remark about the voltages, which I'll add to the article right away. Thank you for that.
Comment from HitenMitsurugi @ 2007/01/27
Ahah, this looks interesting for the BH5 I have in here right now. With some basic heatspreaders, they are almost too hot to touch atm, and this is at 3.2v -- they should reach max overclock at 3.4v, but have been holding that off because of the heat. Don't have any fan running over them either, except for some airflow the zalman 7700 gives them (also the reason why i haven't upgraded that cooler yet ).

With this I should be able to bump up the voltage a bit more and finally upgrade the cooler to a good Scythe.