“How frequently should I alter aqueous metal?” is one of the accepted questions we get. Aqueous metal is activated amid the CPU die and IHS to adce thermal appliance from the silicon, but there hasn’t been abundant ading testing on aqueous metal ality against age. Cracking and dehydration are some of the accepted concerns, arch users to admiration whether aqueous metal achievement will abatement off a bluff at some point. One of our ysis benches has been active thermal ality cycling tests for the aftermost year now, back September of 2017, aloof to see if it’s age- at all.
This is a case study. We are testing with a sample admeasurement of one, so accede it an agreement and case abstraction over an all-embracing test. It is difficult to conduct ading ality tests with orted samples, and would crave dozens (or more) of identical systems to absolutely build-out a ample database. From that angle, again, amuse aculate in apperception that this is a case abstraction of one ysis bench, with one cast of aqueous metal.
Our ysis belvedere uses an Intel i9-7960X 16-core CPU, one that we advised all-embracing absolutely aftermost year. The CPU is clocked to 4.6GHz at 1.22V and has all over-current protections and added ality limitations disabled. The board is a Gigabyte X299 Gaming 9. The 7960X has been delidded and is appliance Thermal Grizzly Conductonaut as its aqueous metal, with the extra silicone adhering still in abode on the f substrate. We acclimated Thermal Grizzly Kryonaut for the thermal adhesive amid the IHS and our cooler, a Corsair H115i with two Noctua NF-A14 fans. We additionally acclimated GSkill Trident Z Black anamnesis at 3600MHz beyond 4 channels. The ality aculation is a Corsair AX1600i in single-rail mode, as we’re blame about 40A during our test.
For testing, the arrangement ran FFT loads with automatic cycling for the accomplished year. Rather than thermally ache the CPU 24/7, we alternated endless with breach periods, added agnate to a absolute use case, which will additionally adce crumbling with accelerated amplification and abbreviating of the aqueous metal and thermal interfaces. Simulating age in electronics is done by thermal cycling, not by ading loads. Final thermal testing for after-effects altitude uses a GN Blender criterion that was purpose-built for CPU load, but this is not was acclimated for the year-long thermal torture.
We ran a few thermal numbers that are critical:
There are some limitations of testing with this. For one of them, we’re alone appliance one sample, so this isn’t globally absolute of all aqueous metals, or alike of Conductonaut. This gives us a abundant baseline and a case study, but we would charge added samples to absolutely accomplish adamantine claims. The aqueous metal isn’t the alone affair that age- – there’s additionally crumbling of the thermal adhesive and, although this one is absurd to appulse in any allusive way, the cooler. To pially annual for this, we did some tests with thermal adhesive activated both afore and afterwards replacing the aqueous metal.
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