Paste is worth replacing when the cooler is changed, or when the old layer dries out over a few years and temperatures start climbing. The ARCTIC MX series does not conduct electricity, so a smear that lands on the board by accident will not short anything: MX-4 counts as the classic, MX-6 and MX-7 are thicker and fill unevenness better. Pick the tube to suit — 2–4 g is enough for one computer, 20 g for applying it often; some packs include a spreader or MX wipes for cleaning off old paste.
Find accessories for your phone
Select manufacturer and model
Paste is worth replacing when the cooler is changed, or when the old layer dries out over a few years and temperatures start climbing. The ARCTIC MX series does not conduct electricity, so a smear that lands on the board by accident will not short anything: MX-4 counts as the classic, MX-6 and MX-7 are thicker and fill unevenness better. Pick the tube to suit — 2–4 g is enough for one computer, 20 g for applying it often; some packs include a spreader or MX wipes for cleaning off old paste.