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Z590 D and high-speed NVMe SSD

fonon

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Z590 D and high-speed NVMe SSD
« on: August 12, 2023, 09:42:11 pm »
Can you actually get data rates above 3500MB/s? 11th generation Intel processor, NVMe connector close to the processor socket.

dmdilks

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Re: Z590 D and high-speed NVMe SSD
« Reply #1 on: August 12, 2023, 11:58:40 pm »
It is all on what M.2 drive you are using. Plus that board only supports 3.0 M.2 drives. Yes you can run a 4.0 but you only get 3.0 speeds.

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fonon

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Re: Z590 D and high-speed NVMe SSD
« Reply #2 on: August 13, 2023, 08:09:34 am »
that board only supports 3.0 M.2 drives. Yes you can run a 4.0 but you only get 3.0 speeds.
Grom Gigabyte Z590 D specification:
 "2* M.2 Connectors
1*PCIe 4.0 x4 M.2
1*PCIe 3.0 x4 M.2"
This data is not real?

And what's about extension cards with connections for M.2 drives?
« Last Edit: August 13, 2023, 09:11:36 am by fonon »

shadowsports

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Re: Z590 D and high-speed NVMe SSD
« Reply #3 on: August 13, 2023, 04:43:47 pm »
Greetings,
You will need to look closely at how the manufacturer implemented support.  They are many factors that can affect disk performance.   Chipset type, CPU type and number of PCIe lanes, etc are examples of what might affect bus speeds of interfaces on a system.

This is why you'll see performance tables in a motherboard's user guide.  Support and performance can be determined by the type of CPU, and the number and types of disks being used.  Priority is often given to PCIe slots for GPU's, but today one good card can often perform at x16 nearly as well as 2 in SLI at x8.  I usually base the configuration on what the system will be used for primarily.

Gaming and highest frame rates.  Photo editing and video production, etc.  2D/3D modeling.  I do a lot of photo and video on my systems.  I have a few MACs too, but don't really care for them. 

If you read the fine print in your user guide, you can see the difference performance levels and how resources are allocated if using a 10th vs. 11th gen CPU.

Here is an example:



Note:

The M2_CPU (upper) slot supports PCIe 4.0 spec and x4, x2
The M2A_SB (lower) supports PCIe 3.0 Spec and x4, x2

Now see the fine print:
(Note) Supported by 11th Generation processors only.

So, the top slot will not support PCIe 4.0 spec unless you are using an 11th gen CPU.  Its also noted in the Slot naming convention used.  Clearly the M2_CPU is interfacing the "CPU" directly, whereas the M2A_SB is interfacing the bus through the integrated "SB" south bridge of the Z590. 

Be careful choosing PCIe expansion cards for adding additional M.2 drives.  Even if the card is x4 and you insert it into a x4 slot, resource availability or chipset compatibility might not allow it to run at full speed, and it might cut the speeds of an adjacent slot in half.  This is because the slots can share resources.   

Hope this helps  :)
« Last Edit: August 13, 2023, 05:11:32 pm by shadowsports »
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fonon

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Re: Z590 D and high-speed NVMe SSD
« Reply #4 on: August 13, 2023, 08:26:18 pm »
Thank you for the extensive explanations. To sum up - a fast disk should work in the upper M2 slot at full speed. And what does the practice look like? The second thing - will the drive connected via the PCIe card not be limited by the architecture of the motherboard? Which PCIe slot should you choose?

shadowsports

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Re: Z590 D and high-speed NVMe SSD
« Reply #5 on: August 14, 2023, 04:50:26 am »
Thank you for the extensive explanations. To sum up - a fast disk should work in the upper M2 slot at full speed. And what does the practice look like? The second thing - will the drive connected via the PCIe card not be limited by the architecture of the motherboard? Which PCIe slot should you choose?

Greetings,
I would expect PCIe 4.0 x4, x2 in the upper slot with a 11th gen CPU and compatible disk.

I'm not sure what you mean by "what does the practice look like"?

Second question regarding an expansion card.  Disk needs to be compatible with chipset on expansion card to achieve maximum speeds.  Chipset on card needs to be compatible with Z590 chipset for best performance. 

Which slot?  You can use either x4 slot for an expansion card.  PCIEX4_1, PCIEX4_2).  These slots operate at PCIe 3.0 spec x4 or x2. 
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fonon

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Re: Z590 D and high-speed NVMe SSD
« Reply #6 on: August 19, 2023, 06:40:12 am »
Specification:
Full PCIe 4.0 Design
1*PCIe 4.0 x16 slot
1*PCIe 4.0 x4 M.2
So only one slot except M.2 supports PCIe 4. The question is - does it really work? Has anyone tried?

fonon

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Re: Z590 D and high-speed NVMe SSD
« Reply #7 on: August 25, 2023, 08:08:13 am »
Samsung 990 PRO works just fine on upper NVMe slot.

shadowsports

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Re: Z590 D and high-speed NVMe SSD
« Reply #8 on: September 28, 2023, 05:28:41 pm »
Samsung 990 PRO works just fine on upper NVMe slot.

Yes.  As I would expect. 

Might help others with the same question.

Sorry for the late reply.
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