TLDR: Get a different brand!
I bought a total of 3 from two different stores because it is one of the few memories still available (2023) and it is on the QVL of my old mobo (and for the record, other DDR3 with exactly the same characteristics (capacity, frequency, and timings) that were not on the QVL simply did not work). Out of the 3, only one worked, meaning that with the other 2 (even when installed alone), the PC did not even pass POST (meaning no BIOS, no Windows, nothing, just a black screen)! So we have 2 out of 3, which is 66.7% DOA, which is not a good percentage.... Although my sample is not large, there are other similar comments. The one that works has been working for about a month without any issues (let's see for how long). Overall, I never expected such terrible QA from a big and well-known company (assuming that the sellers are not responsible since memories from 2 different stores were tested), and personally, I will not buy memories that are not Kingston or Corsair again.

In a computer lab, we purchased 12 new sealed ones to upgrade HP Desktop branded PCs with Intel i3 from 2013, making sure they had the same specifications as the machines already had.

Out of the 12, 2 presented problems out-of-the-box. One of them was not even being detected (completely dead) and the other one gave BSOD (blue screens) after a short period of use and at random times. We tried different slots, inside and outside, and all the known solutions. Nothing changed. They were defective from the factory. We replaced these memory modules with the same Patriot ones (that work) and everything is fine (meaning the machines or their setup were not at fault).

So, a 17% failure rate (2 out of 12 = 16.6666%) when taken out of the box is not exactly a "good" percentage.

We hope the ones that are functioning don't fail on us soon. We are keeping the purchase receipt just in case.

Perfect!!! I have bought 2 (total 8 gb) and I have installed them with core 2 duo 8400, asrock g41c-gs r2.0, 600w psu, 500 gb hard disk and gainward nvidia 8800 gts graphics card (it recently broke and I am forced to use integrated) and windows 7 64 bit. After this upgrade, the pc flies!!! It has increased the life of my computer for another 10 years, I believe. I highly recommend them without reservation!!!