Basic NVMe PCI 4.0 SSD Questions

1Wolf

Limp Gawd
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Jul 10, 2007
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I'm sure these are pretty basic questions, but I'm new to M.2 NVMe SSD's, PCI Gen 4, etc. I haven't built a system since around 2012 or so.

My motherboard (ASUS Dark Hero) allows for two M.2 SSD's. I had considered picking up one M.2 NVMe PCI Gen 4 SSD as my OS/Games drive - Probably 1 TB. I've got a 2nd M.2 Slot left on the motherboard so I wanted to pick up a second M.2 SSD but it doesn't need to be cutting edge speed. I was thinking of an M.2 PCI Gen 3 SSD of 4 TB.

1) Will combining PCI Gen 4 M.2 NVMe SSD's and PCI Gen 3 M.2 SSD's like that slow my system down or anything. The speed won't drop to the lowest common denominator will it?
2) Is there any performance downside with using both M.2 NVMe SSD's? It won't reduce the performance if you are using both slots will it?
3) This system is a 5950x with a 3090. When combined with PCI Gen 4 SSD's would this cause any sort of "Traffic Jam" that might slow me down?
4) What if I also add other older storage technlogies like SATA SSD's, or SATA Spindle Drives - Would any of that slow me down?

Thanks!
 

Keljian

[H]ard|Gawd
Joined
Nov 7, 2006
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I'm sure these are pretty basic questions, but I'm new to M.2 NVMe SSD's, PCI Gen 4, etc. I haven't built a system since around 2012 or so.

My motherboard (ASUS Dark Hero) allows for two M.2 SSD's. I had considered picking up one M.2 NVMe PCI Gen 4 SSD as my OS/Games drive - Probably 1 TB. I've got a 2nd M.2 Slot left on the motherboard so I wanted to pick up a second M.2 SSD but it doesn't need to be cutting edge speed. I was thinking of an M.2 PCI Gen 3 SSD of 4 TB.

1) Will combining PCI Gen 4 M.2 NVMe SSD's and PCI Gen 3 M.2 SSD's like that slow my system down or anything. The speed won't drop to the lowest common denominator will it?
2) Is there any performance downside with using both M.2 NVMe SSD's? It won't reduce the performance if you are using both slots will it?
3) This system is a 5950x with a 3090. When combined with PCI Gen 4 SSD's would this cause any sort of "Traffic Jam" that might slow me down?
4) What if I also add other older storage technlogies like SATA SSD's, or SATA Spindle Drives - Would any of that slow me down?

Thanks!
1: no
2: no
3: no
4: no - but some motherboards will disable one or two sata connections if particular nvme slots are used. Read the manual for more info.
 

1Wolf

Limp Gawd
Joined
Jul 10, 2007
Messages
364
1: no
2: no
3: no
4: no - but some motherboards will disable one or two sata connections if particular nvme slots are used. Read the manual for more info.

Thank you Keljian. Greatly appreciated.
 

dtnh

n00b
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Feb 6, 2021
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17
My friend has a AMD 5950x and 3090 with WD SN850 500GB and a WD SN750 1TB. The system is speedy. I notice the difference between PCIe 3 to 4. The SN850 is the main drive

The motherboard is a Asus Tuf x570 plus wifi.
 

Eradan

[H]ard|Gawd
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My friend has a AMD 5950x and 3090 with WD SN850 500GB and a WD SN750 1TB. The system is speedy. I notice the difference between PCIe 3 to 4. The SN850 is the main drive

The motherboard is a Asus Tuf x570 plus wifi.
Where do you notice the difference? Moving data or just normal desktop stuff?
 

1Wolf

Limp Gawd
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Jul 10, 2007
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364
My friend has a AMD 5950x and 3090 with WD SN850 500GB and a WD SN750 1TB. The system is speedy. I notice the difference between PCIe 3 to 4. The SN850 is the main drive

The motherboard is a Asus Tuf x570 plus wifi.

Thats very interesting as that is the exact drive I'm interested in - except the 2 TB version instead of the 1 TB.

I believe on my mobo (ASUS Dark Hero) that the first M.2 is PCIE 4.0 and the 2nd one is only PCIE 3.0 so I'm looking to go with a bigger 4 TB PCIE 3.0 in the 2nd slot.
 

Nasgul

Weaksauce
Joined
Jun 11, 2005
Messages
80
Yeah, don't cheap out on the drive, I buy Corsair MP or Western Digital Black or Blue. I view Samsung as good but overpriced and I see they offer a longer warranty, either way, I'm happy with Corsair and WD.
 

dtnh

n00b
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Feb 6, 2021
Messages
17
Where do you notice the difference? Moving data or just normal desktop stuff?
I notice loading speeds are faster. It feels snappier to me. My friend has a pretty high end system 5950x, 32GB DDR4 3600MHz CL16, RTX 3090 with the SN850 so maybe thats why it feels snappy I guess.
 

jarablue

Gawd
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May 31, 2003
Messages
939
I am glad there is 0 difference pretty much in sata ssds vs nvme ssds other than benchmarks and raw file copying.

Games and windows pretty much notice no difference other than placebo.

SATA ssds still hanging strong for game storage and even windows installs.
 

Dan_D

Extremely [H]
Joined
Feb 9, 2002
Messages
57,767
I believe on my mobo (ASUS Dark Hero) that the first M.2 is PCIE 4.0 and the 2nd one is only PCIE 3.0 so I'm looking to go with a bigger 4 TB PCIE 3.0 in the 2nd slot.
Incorrect. If you are using a Ryzen 3000 or 5000 series CPU, all of your PCIe slots are Gen 4.0 compliant, regardless of configuration. This is taken directly from ASUS' product page. I've highlighted the relevant information.

1613237809579.png
 

1Wolf

Limp Gawd
Joined
Jul 10, 2007
Messages
364
Incorrect. If you are using a Ryzen 3000 or 5000 series CPU, all of your PCIe slots are Gen 4.0 compliant, regardless of configuration. This is taken directly from ASUS' product page. I've highlighted the relevant information.

View attachment 329042

Thanks Dan_D. I'll probably still use a PCIE 3.0 in that 2nd slot though as if its not going to hurt my performance, its cheaper and its just for storage. I'm sure I don't need a PCIE 4.0 for my first slot either and probably won't notice the difference but seeing as how this will be my first AMD based system (all previously have been Intel) and my CPU and the mobo offer PCIE Gen 4 support...I'd like to get at least 1 PCIE Gen 4 simply because I can ;)
 

Shadowarez

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then look at the Rocket 4 Plus drives they are the newer version of the same drive but have much higher read/write im looking at 1tb main 2 2tb in other then like keljian suggested primocache will be in use on my 18tb spinner, with a nice fast ssd as a L2 Cache and since the system has 128gb of ram at 3600mhz ill dedicate a nice chunk to it as well for reading.
 
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TheSlySyl

[H]ard|Gawd
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There is no noticable difference in normal day to day use. It is a placebo effect to most people to justify the cost.
Incorrect.
Load times are absolutely faster with a PCI-E Gen 4 SSD vs Gen 3 SSD > > > > > > SATA SSD > > > > (x1000) spinning disk HDD.

You just aren't in a situation where your "day to day use" requires the amount of data moving around that mine does. There's a reason that I try to make sure that most of my data is loaded from RAMcache, because that's also noticeably faster than Gen 4. I'm super annoyed that Xbox gamepass titles don't work with cache solutions due to their really messed up installation method.

Anyway, back on topic.
The only pci-e gen4 SSD I have in my system at the moment is the Corsair Force MP600, but I suspect i'll be picking up one of the 7Gb/s models in the next few months so I can compare the two. It's adequate. Price was right when I got it though.

If you *aren't* in a situation where you'll be moving around hundreds of gigs of data a day, you'll probably be fine with either.
 
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vegeta535

Supreme [H]ardness
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Jul 19, 2013
Messages
5,722
Incorrect.
Load times are absolutely faster with a PCI-E Gen 4 SSD vs Gen 3 SSD > > > > > > SATA SSD > > > > (x1000) spinning disk HDD.

You just aren't in a situation where your "day to day use" requires the amount of data moving around that mine does. There's a reason that I try to make sure that most of my data is loaded from RAMcache, because that's also noticeably faster than Gen 4. I'm super annoyed that Xbox gamepass titles don't work with cache solutions due to their really messed up installation method.

Anyway, back on topic.
The only pci-e gen4 SSD I have in my system at the moment is the Corsair Force MP600, but I suspect i'll be picking up one of the 7Gb/s models in the next few months so I can compare the two. It's adequate. Price was right when I got it though.

If you *aren't* in a situation where you'll be moving around hundreds of gigs of data a day, you'll probably be fine with either.
No shit there is a difference between spinning rust and even a SATA SSD. Between gen 3 and 4 nope.
 

likeman

Gawd
Joined
Aug 17, 2011
Messages
764
Incorrect.
Load times are absolutely faster with a PCI-E Gen 4 SSD vs Gen 3 SSD > > > > > > SATA SSD > > > > (x1000) spinning disk HDD.

You just aren't in a situation where your "day to day use" requires the amount of data moving around that mine does. There's a reason that I try to make sure that most of my data is loaded from RAMcache, because that's also noticeably faster than Gen 4. I'm super annoyed that Xbox gamepass titles don't work with cache solutions due to their really messed up installation method.

Anyway, back on topic.
The only pci-e gen4 SSD I have in my system at the moment is the Corsair Force MP600, but I suspect i'll be picking up one of the 7Gb/s models in the next few months so I can compare the two. It's adequate. Price was right when I got it though.

If you *aren't* in a situation where you'll be moving around hundreds of gigs of data a day, you'll probably be fine with either.
he meant between a NVME (gen3 or 4) and SATA SSD

installing the games or copy between NVME disks will be the only improvement, running them no as your CPU limited when its loading the data (well there is a diferance but tends to be under 2 seconds but that's more due efficiently providing the data at lower cpu usage)
 
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