WD SN770 500Gb + asus Z97-A

[r-niki09]

Привет, ребята! Купил себе WD SN770 500 Gb на asus Z97-A. Я понимаю, что скорости 5000мб/с не будет, но мне была важна скорость случайного чтения. Я знаю, что при подключении разъема m.2 к биосу отключены sata express и 2 малых PCI. К первому маленькому слоту PCI был подключен Fenvi 919, и было опасение, что он перестанет работать. так и случилось. Когда-то был установлен macos el capitan от Clover, тогда Fenvi работала только в первом слоте. Но сейчас на open core 0.9.3 macos Monterey установил Fenvi 919 в пятый слот PCI и удача была на моей стороне, Wi-Fi BT работают. скорость случайного чтения и записи очень высока. скорость записи и чтения SSD WD SN770 750 мб/с меня устраивает, а самое главное купил ssd на aliexpress за 30$, восторг. В окнах, скорость чтения/записи 850 мб/с. купил сейчас на будущий новый комп пока стоимость ssd сильно упала.

after buying NVMe/M.2 connector: write speed 2675 / read 2740 JOY

 

[Edhawk]

If you are using the NVMe/M.2 connector on the motherboard you will be limiting the drive to 2 x PCIe lanes, as that is all the Z97 boards could provide. Hence the max 750 mb/s speed.

You would be better served using a PCIe adapter like this with your WD SN770 drive:

PCIe NVME adapter, future proof for PCIe 4.0 standards.

https://www.amazon.co.uk/dp/B07FN3YZ8P/?tag=tonymacx86-21

An adapter like this with your NVME drive mounted and installed in the bottom PCIe x 16 size slot would provide at least twice the throughput compared to the motherboards built-in connector. I have been using the adapter linked above or similar adapters in a number of Haswell Z97 systems for years, with no issues.

Plus these adapters have no impact on the PCIe x1 slots or SATA ports.

 

[r-niki09]

I was very interested in what the m.2 built into the motherboard would give. I have been looking for information about what will come of such an idea for a long time. but didn't find anything. thank you so much for recommending the adapter. because there are also questions about which one to buy. I will buy and report

 

[r-niki09]

If you are using the NVMe/M.2 connector on the motherboard you will be limiting the drive to 2 x PCIe lanes, as that is all the Z97 boards could provide. Hence the max 750 mb/s speed.

You would be better served using a PCIe adapter like this with your WD SN770 drive:

View attachment 569214 PCIe NVME adapter, future proof for PCIe 4.0 standards.

https://www.amazon.co.uk/dp/B07FN3YZ8P/?tag=tonymacx86-21

An adapter like this with your NVME drive mounted and installed in the bottom PCIe x 16 size slot would provide at least twice the throughput compared to the motherboards built-in connector. I have been using the adapter linked above or similar adapters in a number of Haswell Z97 systems for years, with no issues.

Plus these adapters have no impact on the PCIe x1 slots or

and another question. when i put the ssd into the macos adapter will it still work or will i have to reinstall my monterey?

 

[Edhawk]

It will work as it did previously, it is just a case of moving the drive from one connector to another. You may have to check the EFI partition for the NVMe drive is still the main/priority boot drive in your Bios. But other than that it should be a simple switch.

Just so you know the built-in NVMe connector on the Haswell motherboards are limited to 10GB/s, which equates to 750MB/s from the 2 x PCIe lanes being used.

The adapter will access the full 4 x PCIe lanes available on the bottom PCIe x16 size slot. So Read/Write speeds should be a minimum of 2000/1500MB/s respectively. At least those were the speeds I was seeing with an old Samsung SM951 drive from circa 2014/15. Your SN770 drive will probably saturate the PCIe 3.0 standard PCIe x4 slot and the speeds may be up to +50% on these figures.

 

[r-niki09]

It will work as it did previously, it is just a case of moving the drive from one connector to another. You may have to check the EFI partition for the NVMe drive is still the main/priority boot drive in your Bios. But other than that it should be a simple switch.

Just so you know the built-in NVMe connector on the Haswell motherboards are limited to 10GB/s, which equates to 750MB/s from the 2 x PCIe lanes being used.

The adapter will access the full 4 x PCIe lanes available on the bottom PCIe x16 size slot. So Read/Write speeds should be a minimum of 2000/1500MB/s respectively. At least those were the speeds I was seeing with an old Samsung SM951 drive from circa 2014/15. Your SN770 drive will probably saturate the PCIe 3.0 standard PCIe x4 slot and the speeds may be up to +50% on these figures.

Thank you. I think this information will be useful to users of the Z97 chip

 

[Edhawk]

Good to hear you have it up and running on the PCIe adapter in your Haswell system. It makes a big difference to the speed of the drive compared to a HDD, SSD or using the drive in the built-in NVME connector.