<div dir="ltr"><div><div style="font-family:tahoma,sans-serif" class="gmail_default">The NVMe units sure sport better TBW specs compared to these older SATA 2.5" that's for sure. It's likely the older SATA ones were being quoted with very conservative numbers though compared to today's "let's one-up the competition" by ever-inflated TBW ratings, likely using looser data to statistically drive up the published TBW numbers.<br></div><div style="font-family:tahoma,sans-serif" class="gmail_default">Samsung has been good with their datasheets showing specs on these older units, for my 850 EVO, see --</div><div style="font-family:tahoma,sans-serif" class="gmail_default"><a href="https://download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_850_EVO_Data_Sheet_Rev_3_1.pdf">https://download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_850_EVO_Data_Sheet_Rev_3_1.pdf</a><br><br></div><div style="font-family:tahoma,sans-serif" class="gmail_default">Pretty comprehensive details there.</div><br clear="all"></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><i><font size="4"><span style="font-family:comic sans ms,sans-serif">Ron S.</span></font></i></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Jun 23, 2026 at 10:38\u202fAM Khalid Baheyeldin <<a href="mailto:kb@2bits.com">kb@2bits.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Ron,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">If you are backing it regularly, then keep it going. As you say, it is only a few hours</div><div class="gmail_default" style="font-size:small">of restore on a new device if it finally dies. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">In my case ... </div><div class="gmail_default" style="font-size:small">I have not seen SATA SSDs (that I own) having an Endurance TDW specification, </div><div class="gmail_default" style="font-size:small">and don't report one in smartctl. Maybe because they are really old?</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The M.2 NVMe SSDs do have them, and most have a TDW of 600TB for the 1TB.</div><div class="gmail_default" style="font-size:small">That is for the consumer versions, not the enterprise ones. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">If I search for "X specs" (replace X by the model number), then usually you can get the TDW.</div><div class="gmail_default" style="font-size:small">For example, a <a href="https://semiconductor.samsung.com/ssd/pc-ssd/" target="_blank">Samsung PM9E1</a>, says 600TDW for the 1TB version.</div><div class="gmail_default" style="font-size:small">I managed to buy a used one for $120 (after being scammed by someone else).</div><div class="gmail_default" style="font-size:small">And it had only 1.69TB written, so plenty of life left. </div></div></div>
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