Some of what I've stated above is because have seen the heatsinks of those included Intel fans popping out, not work of my doing, rather of the OEM.
Often, there would be a sudden rise in heat, usually during gaming/benchmarking & subsequent BSOD, and even though in warranty, wanted me to 'take a peek' because if a simple fix, that would save from having to ship their PC & be w/out 2-4 weeks. On three of these PC's, all custom builds by a major independent OEM (am not calling name to prevent litigation), one of those locking tabs would be popped up & only one of the three stripes of Intel thermal paste would be 'cured' (the others looked almost new) so I'd remove the heatsink, cleanup that component & CPU with air & 91% alcohol, then place to the side. Then apply some MX-4 on the CPU (what I used then, now use Arctic Silver 5, aka 'AC5'), very sparingly, just oat sized amount, then spread with a plastic tool I have that's cleaned after every use to where it would simply glaze the CPU (anymore is too much & a waste). Any excess that would run past the CPU would be removed before lowering the heatsink. In practice, I've found GPU's to have 'too much' paste over CPU's, at times, it's all around the surrounding area & a mess, yet the die is a tiny fraction of the size of any CPU, so only a 'dot' is needed.
Reassembled using those old style optical drive screws, the ones that stuck out some above the threads to hold in the old type (spring loaded) optical drive latches, and my own like Intel coolers with copper core (two didn't have these) that I keep on hand (this trick was also learned on YouTube). The 'donation' for the jobs were only $50 ($60 for the copper core upgrades), I stand behind what I do for a solid year, a handshake agreement, and I'm well known around here, mostly via my former volunteer work with a charity agency which rehomed donated & collected by the streets computers of all types (except Macs). We did get a few, the ministry had a helper who knew these & would be listed on eBay (how I came to know that site ) & proceeds would go back into general funds.
In fact, have built close to 25 PC's in the last 6-8 months alone, on average, the components were over $1,400, some higher, and so that the customer has a 100% OEM warranty on their components, they order & have delivered to their residence & if needed, I'll pick up everything & deliver the final build. This way, I have nothing involved except labor & there's no 'under the table' markup on parts (so everyone wins! ). I can build a powerful quad core PC that the same OEM who shipped the botched installed CPU coolers, charges $3,200 for a total of $1,800 (including a generous donation for my labor), and this includes a 512GB Samsung 950 PRO (now 960 PRO) NVMe SSD that they don't. I don't do $500 builds, $1,000 is the absolute minimum, and this holds down the calls for 'cheap builds', can perform only so much work with my condition & must make these count.
Add to the factor that lower priced builds equates lower quality components = more 'redo' work caused by low cost hardware. I'm not going down that road, my last 'cheap' build was a rebuild of a PC given to me that no longer retains any of the components, as of early this week the mini tower case was upgraded & that was the final component. I'll likely take the original as sent to me, reassemble & use as a low cost, low maintenance Linux folding@home box.
Edited by cat1092, 23 February 2017 - 03:18 AM.