Performance after Spectre/Meltdown fix so much slower!

[JanCerny]

Modern "hyper-super-ultra" drives based on 3D TLC chips have higher leakage current.

@davidm71

@JanCerny

Check out the PM871a

100mw active power consumption!!!

Old Intel 320 have similar specifications.

[davidm71]

Leakage current??

So don’t replace the WD 3D Blue for a PM871?

[JanCerny]

https://en.wikipedia.org/wiki/Leakage_(electronics)

In semiconductor devices, leakage is a quantum phenomenon where mobile charge carriers (electrons or holes) tunnel through an insulating region. Leakage increases exponentially as the thickness of the insulating region decreases. Tunneling leakage can also occur across semiconductor junctions between heavily doped P-type and N-type semiconductors. Other than tunneling via the gate insulator or junctions, carriers can also leak between source and drain terminals of a Metal Oxide Semiconductor (MOS) transistor. This is called subthreshold conduction. The primary source of leakage occurs inside transistors, but electrons can also leak between interconnects. Leakage increases power consumption and if sufficiently large can cause complete circuit failure.

Leakage is currently one of the main factors limiting increased computer processor performance. Efforts to minimize leakage include the use of strained silicon, high-k dielectrics, and/or stronger dopant levels in the semiconductor. Leakage reduction to continue Moore’s law will not only require new material solutions but also proper system design.

[davidm71]

I know what leakage is but in regards to these TLC drives you are referring to situations like what happened with the Samsung 840 Evo and performance loss of those sectors that were never refreshed? Same thing?

[davidm71]

Got to give props to Dell once again. After 3 years and past warranty they released another bios update upgrading the microcodes, ME, and other items. Will have to run performance tests to see if theres a difference but its a Sata m.2 drive so the numbers will never be exciting.