@glebe,
On P8Z77-V system I do use now W10 64bits RS4 v183 build 17134.48
System SSD is a Samsung 950 PRO NVMe 512GB device.
Yes, with 0-3% speed loss is acceptable when Meltdown protection is applied.
Yes, the "Spectre patch" does cause a non acceptable lost of performance (up to 20%) for this machine, this is why I let always set Spectre Protection = NO even if the BIOS µCode is up to date (1F).
I do use InSpectre tool Release #8.

I'm going to try my hand at Nvme m.2 raid to mitigate any possible slowdown issue on one machine. Should make up for it in spades.

As far as my slow poke of a laptop (only 3 years old) will probably have to get a new one or replace the mainboard. Researched Dell xps 13 motherboards and they sell them on Ebay for $400-$600. Kind of expensive considering the ram is soldered onto the motherboard.

On two 2 different system equipped with 1366 (X5670) almost same spec, one legacy the other fully UEFI, after 4/6 month's everything, even with NVME as boot drive, is marginal.
I removed half post since [SPOILER] :D

100PIER,
thank you for the details. Am I right, that you have the latest ivy bridge microcode installed (1F), spectre attack protection disable in the tool and I have the same performance as with older microcode (1B or 1C) with meltdown only? In other words does disabling spectre protection in the tool fully eliminate the negative performance impact of the new microcode?

@glebe
yes, i do use the last Ivy Bridge (1F) µC, and yes I do observe that disabling the spectre protection with InSpectre tool does fully eliminate the negative impact on the new microcode.

Low-cost 1TB SATA SSD Western Digital Blue 3D (WDS100T2B0B-00YS70) with Marvell 88SS1074 controller and Sandisk BiCS3 3D TLC chips.

All C-states are enabled, Speedshift: enabled, performance profile: balanced. Windows 10 x64 1803, 600 GB of free space.

Skylake Core i3-6098P with C2h microcode.
Config:


Test results:

@JanCerny,

I have the 512 Gb version of the WD Blue 3D. Noticed slightly less battery life on the Dell XPS 13 9343 laptop. Compared the Samsung the WD drives consume slighly more power I recall reading while doing my research.

Thanks for sharing.

@davidm71 500GB and 1TB models have similar power consuption (page 17).


Spectre&Meltdown patch has increased power consumption on my dual Xeon E5-2650v2 workstation with Quadro K4000 in load from 220 watts to 225 watts.

@JanCerny

I feel like getting rid of my WD Blue M.2 based on the power consumption scores. I use to have the PM851 256 and that was spec'd at 190 - 250mw for active read, 50mw idle, and 2mw for devslp. The Blue 3D M.2 Sata drive is like 10X more of a power consumer and devslps at 5-12mw!

Hate when I make bad purchase decisions!

Shoot!

@JanCerny

Check out the PM871a

100mw active power consumption!!!

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

Zitat von davidm71 im Beitrag #40

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@JanCerny

Check out the PM871a

100mw active power consumption!!!

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Leakage current??

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

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

Zitat

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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.

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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?

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.