Official Reply from Memory Express:

Thanks for your Review Amin.

Although we do not know your "application," it sounds... unique.

We are unsure how much Thermal Grease you used, but we do have a picture on the product's page that uses a typical amount for CPUs. Maybe overuse was the issue?

By design, Thermal Greases and Pastes are highly thermal conductive in part because they use powdered metal(s) in their construction. This makes them more thermally conductive, and to varying degrees, electonically conductive as well.

In the Computer Industry this is known and accepted as commonplace. When used between CPUs, GPUs and their cooling solutions, this in not a detriment.

Giving a product a 1 Star Review when it does not work well when used outside of it's designed purpose, which seems to be the case here, seems a little unfair.