https://www.theregister.com/2021/08/27/western_digital_components/

Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

Amazon's choice.

Now pondering if this is still OK for my older specification MoBo (see
sig).

Cheers



Dave R


--
AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

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On 27/08/2021 18:56, David wrote:

https://www.theregister.com/2021/08/27/western_digital_components/

Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

Amazon's choice.

Now pondering if this is still OK for my older specification MoBo (see
sig).

Are you worried about real world performance, or benchmarks? :)

Cheers

Dave R

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On 27/08/2021 in message <iosnalF6g0mU2@mid.individual.net> David wrote:

https://www.theregister.com/2021/08/27/western_digital_components/

Tells the tale of WD Blue SN550 having downgraded components and poorer >performance without any warning to purchasers.

https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

Amazon's choice.

Now pondering if this is still OK for my older specification MoBo (see
sig).

I bought one a couple of weeks back, paid £175 for it and it benchmarked slower on my Xeon powered HP Z230 than an SSD. WD support were hopeless
and suggested un-installing the drivers to force an update. I put it in my
Asus Z170-K and it benchmarks around 2033 MB/s read against 2608 MB/s for
a Samsung NVMe. Not sure there is any practical difference though.

--
Jeff Gaines Wiltshire UK
Every day is a good day for chicken, unless you're a chicken.

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David wrote:

Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

Great, I've just fitted that exact model as a replacement for a dead
128GB Samsung in a Surface Pro4 (bugger of a job) still only £37 from
eBuyer.

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On Fri, 27 Aug 2021 17:56:38 +0000, David wrote:

https://www.theregister.com/2021/08/27/western_digital_components/

Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/

B07YFFX5MD/

Amazon's choice.

Now pondering if this is still OK for my older specification MoBo (see
sig).

Having read the MoBo spec it claims up to 8Gb/sec.
"PCIe Gen2 x4 22110 M.2 Connector with up to 20Gb/s Data Transfer (PCIe
NVMe & SATA SSD support)"
I assume that this equates to 1 GB/sec (ignoring any protocol overheads -
I used to size data connections as 10 bit to allow for "stuff").
So a read speed of 2400 MB (2.4 GB) a second from the SSD looks not to be
a limit.

I am however now confused, because it says

"Data Transfer Rate 8 Gb per second"
(Or 1 GB/s)

"Read Speed 2400 MB per second"
(Or 2.4 GB/sec)

So am I correct in assuming that the write speed is 1GB/sec and read speed
is 2.4GB/sec?

They are all bastards for using mixed units, of course.

Cheers


Dave R


--
AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

--
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On Sat, 28 Aug 2021 13:50:54 +0000, David wrote:

On Fri, 27 Aug 2021 17:56:38 +0000, David wrote:

https://www.theregister.com/2021/08/27/western_digital_components/

Tells the tale of WD Blue SN550 having downgraded components and poorer
performance without any warning to purchasers.

https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/

B07YFFX5MD/

Amazon's choice.

Now pondering if this is still OK for my older specification MoBo (see
sig).

Having read the MoBo spec it claims up to 8Gb/sec.
"PCIe Gen2 x4 22110 M.2 Connector with up to 20Gb/s Data Transfer (PCIe
NVMe & SATA SSD support)"
I assume that this equates to 1 GB/sec (ignoring any protocol overheads
- I used to size data connections as 10 bit to allow for "stuff").
So a read speed of 2400 MB (2.4 GB) a second from the SSD looks not to
be a limit.

I am however now confused, because it says

"Data Transfer Rate 8 Gb per second"
(Or 1 GB/s)

"Read Speed 2400 MB per second"
(Or 2.4 GB/sec)

So am I correct in assuming that the write speed is 1GB/sec and read
speed is 2.4GB/sec?

They are all bastards for using mixed units, of course.

Gah!
Having a bad day.
20 Gb/sec is between 2 GB/s and 2.5 GB/s.
So the read speed matches the MoBo but the write speed does not.
I am assuming that read speed is more important, and usually faster than
write speed anyway.

Perhaps defer any but decision until I can read my posts back without
getting confused. :-(

Cheers


Dave R



--
AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

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On 28/08/2021 in message <iouu1uF6g0mU5@mid.individual.net> David wrote:

Perhaps defer any but decision until I can read my posts back without
getting confused. :-(

For info I've posted benchmarks on DropBox:

https://www.dropbox.com/sh/9m0gfb2dk3wq96q/AAAq4ZBu54g2gq8BVoWTg7Qma?dl=0

NVMe-BM.png has my Samsung C drive side by side with the WD, there is
quite a difference but then the prices are quite different too!

If anybody wants to look at HP-Screen.jpg and tell me what is causing the stripes on my monitor I'd be delighted :-)

--
Jeff Gaines Wiltshire UK
Those are my principles – and if you don’t like them, well, I have
others.
(Groucho Marx)

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