Low random writes Samsung 990 Pro

VuRKaN · Jan 19, 2024

990 pro with heatsink. r5 5600 cpu, b550 motherboad, windows not installed. (english very bad sory) and random read cpu use %100

Black6spdZ · Jan 23, 2024

This problem is NOT just for the 4TB drives and it even shows on an older PCIe Gen3 system! Latest 4B2QJXD7 firmware with full performance mode enabled as well. These drivers are utter garbage!! Regret my purchase now. Samsung NEVER again!! My guess is they had to do something to the write algorithm to band aid the previous write amplification issue in earlier firmware.

SuperConker · Jan 23, 2024

Black6spdZ said:
This problem is NOT just for the 4TB drives and it even shows on an older PCIe Gen3 system! Latest 4B2QJXD7 firmware with full performance mode enabled as well. These drivers are utter garbage!! Regret my purchase now. Samsung NEVER again!! My guess is they had to do something to the write algorithm to band aid the previous write amplification issue in earlier firmware.

You are not going to get the full advertised speed of the 980/990 PRO on a system with only PCIe Gen 3.0 on it.

You would be limited to around 3500 MB/s Reads/Writes (since that is the maximum speed of PCIe Gen 3.0).

SPDIF · Jan 23, 2024

This is what you can expect from a 990PRO at PCIe 4.0. I could not call this exactly garbage...

Nekajo · Jan 23, 2024

990 Pro garbage? Nah it is literally in the top 3 fastest PCIe 4.0 SSDs, probably the overall best drive for most people. Tested the 2GB model and it was slightly faster than my 4TB SN850X in most stuff. Both are great drives tho.

P4-630 · Jan 23, 2024

Black6spdZ said:
These drivers are utter garbage!! Regret my purchase now. Samsung NEVER again!!

So you buy SSD's purely for benchmarking huh?.....

ThrashZone · Jan 23, 2024

Black6spdZ said:
This problem is NOT just for the 4TB drives and it even shows on an older PCIe Gen3 system! Latest 4B2QJXD7 firmware with full performance mode enabled as well. These drivers are utter garbage!! Regret my purchase now. Samsung NEVER again!! My guess is they had to do something to the write algorithm to band aid the previous write amplification issue in earlier firmware.
View attachment 330990

Hi,
Weird drop in writes and read speeds are still looking okay
What amount of data have you added ?

For others here checking read/ write speeds every month or two is hardly buying for benchmarks lol

If y'all can't see the history dates get glasses please.
Writes dropping like this is hardly normal and frankly I wouldn't be all that thrilled either pci-e 3 or not.

SuperConker · Jan 23, 2024

ThrashZone said:
What amount of data have you added ?

That's a really good point, most SSD's will drop in speed as they get filled with data.

Most SSD's I've seen won't even get the advertised speed anymore, once they are filled past 25% full.

I'm not sure why it's like that, but it's certainly a huge drawback with SSD's.

ThrashZone · Jan 23, 2024

SuperConker said:
That's a really good point, most SSD's will drop in speed as they get filled with data.

Most SSD's I've seen won't get the advertised speed anymore, once they are filled past 25% full.

I'm not sure why it's like that, but it's certainly a huge drawback with SSD's.

Hi,
Indeed notice the other member testing a empty partition.

I can test my os 970 evo+ and get better write results than the 990 the member with issue and mine is obviously old so I agree something is fishy with these terrible write speeds from a top of the line 990 pro.

Matter of fact I did post it the other day

SPDIF · Jan 23, 2024

SuperConker said:
I'm not sure why it's like that, but it's certainly a huge drawback with SSD's.

AFAIK, because SSDs can only write to and store data to an empty block, and if the block is not open, solid-state drives need to delete the data marked as deleted and then fill it with new data.

If the SSD is too full, its read and write speed and lifespan will be affected and will decrease to varying degrees. I think it's an disadvantage we have to live with...

mechtech · Jan 23, 2024

Might find more to compare to here

Post your CrystalDiskMark speeds

Optane P1600X (Stock & OS drive), with Overclocked 13600k & tightened DDR5 6666MT/s

www.techpowerup.com

jarablue · Jan 25, 2024

People here do not want to hear that there is an issue with these drives. When there is 800k random write iops on a 1,550,000 iops rated drive....that is NOT normal. But everyone here is like nah no big deal.

Good luck. Maybe a firmware update in the future will fix this. As of now nothing we can do.

AsRock · Jan 25, 2024

SuperConker said:
You are not going to get the full advertised speed of the 980/990 PRO on a system with only PCIe Gen 3.0 on it.

You would be limited to around 3500 MB/s Reads/Writes (since that is the maximum speed of PCIe Gen 3.0).

EDIT: 980 pro is Gen 3, so even if he had Gen4 or 5 it would not be better.

How ever i have not noticed any slow down on my 990 pro's or 980 pro.

ThrashZone · Jan 25, 2024

AsRock said:
So is a 980 pro ?.

Hi,
Yes.
Problem is they weren't even getting that on the 990 pro
Pro versions read/ write are really close to each other
After a while they turn into evo's write speed lol

AsRock · Jan 25, 2024

ThrashZone said:
Hi,
Yes.
Problem is they weren't even getting that on the 990 pro
Pro versions read/ write are really close to each other
After a while they turn into evo's write speed lol

Could be many things wrong as, wrong m.2 slot, bad bios setting and could be a bad drive or a compatibility issue. Who knows with lack of so many details.

Black6spdZ · Jan 25, 2024

SuperConker said:
You are not going to get the full advertised speed of the 980/990 PRO on a system with only PCIe Gen 3.0 on it.

You would be limited to around 3500 MB/s Reads/Writes (since that is the maximum speed of PCIe Gen 3.0).

I know this! did you look at all at my screenshot?

P4-630 said:
So you buy SSD's purely for benchmarking huh?.....

no, but I want an SSD that doesn't halve the writes in 2 months! I'm willing to bet Samsung disabled or greatly reduced garbage collection to reduce the write error from early firmware. Use a band-aid to fix one problem to create another.. are their engineers inept?!

SuperConker · Jan 25, 2024

AsRock said:
EDIT: 980 pro is Gen 3, so even if he had Gen4 or 5 it would not be better.

How ever i have not noticed any slow down on my 990 pro's or 980 pro.

The 980 PRO is actually a PCIe Gen 4 drive (with Read/Write speeds of 7000/5000 MB/s).

Black6spdZ said:
I know this! did you look at all at my screenshot?

I did look at it, and in your screenshot it appears you cannot get any faster speed than 3500 MB/s.

You also said yourself that you tested the drive in a motherboard with only PCIe Gen 3 on it,
so your speed are not going to get any faster than 3500 MB/s (just like in your screenshot).

Black6spdZ · Jan 25, 2024

SuperConker said:
The 980 PRO is actually a PCIe Gen 4 drive (with Read/Write speeds of 7000/5000 MB/s).

I did look at it, and in your screenshot it appears you cannot get any faster speed than 3500 MB/s.

You also said yourself that you tested the drive in a motherboard with only PCIe Gen 3 on it,
so your speed are not going to get any faster than 3500 MB/s (just like in your screenshot).

since this thread has revolved around the write reduction problem I presented proof of this.. guess you overlooked that aspect

SuperConker · Jan 25, 2024

How full is your drive? SSD's sadly get slower and slower the more data you put on them.

Some SSD's can't even retain their advertised speed anymore once you reach 25% full (or more).

Black6spdZ · Jan 25, 2024

SuperConker said:
How full is your drive? SSD's sadly get slower and slower the more data you put on them.

Some SSD's can't even retain their advertised speed anymore once you reach 25% full (or more).

134GB of data with a 200GB unallocated overprovision space too

AsRock · Jan 25, 2024

SuperConker said:
The 980 PRO is actually a PCIe Gen 4 drive (with Read/Write speeds of 7000/5000 MB/s).

I did look at it, and in your screenshot it appears you cannot get any faster speed than 3500 MB/s.

You also said yourself that you tested the drive in a motherboard with only PCIe Gen 3 on it,
so your speed are not going to get any faster than 3500 MB/s (just like in your screenshot).

Yes my bad, i was thinking of the none pro :| .

Black6spdZ · Jan 25, 2024

I may do a backup and secure erase on this drive to see if it really is an issue with Samsung refusing to do nand garbage collection in firmware now.. has anyone else with low writes now tried this?

ThrashZone · Jan 25, 2024

Black6spdZ said:
I may do a backup and secure erase on this drive to see if it really is an issue with Samsung refusing to do nand garbage collection in firmware now.. has anyone else with low writes now tried this?

Hi,
Sorry if I missed it but what are your system spec's with the issue ?

You barely have any data on the drive 134gb is nearly nothing.
I'd lean more to bios update or roll back as more viable time spent besides contacting samsumg and giving them the history with their own app.

SPDIF · Jan 25, 2024

Even old HDD became slower towards the end of capacity, and in real life, how much random writings will ever happen? Almost never going to happen in an OS or games that just reading.
And an PCIe SSD is so fast that you also will never notice it while using it. Just go on with your life and don't let your sleep for this, it's meaningless.

Besides downgrade firmware is not possible on most SSD, blocked by manufacturer.

chrcoluk · Jan 25, 2024

Reviews probably need to emphasis some parts of the nvme results are CPU dependent. Particularly random i/o.

Intel 12-14 gen are perhaps especially vulnerable, as it might end up going on an e-core. Any older systems also that just wont have the grunt.

I first learnt this when I was diagnosing SSD issues some years back and was wondering why SSD was slower on my 2600X vs 9900K.

I also always stick to the Microsoft driver.

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Cooling	Corsair H150i PRO RGB
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Storage	Samsung 990 PRO NVMe SSD 4000 GB (OS) / Samsung 860 EVO SSD 2000 GB / Samsung 860 EVO SSD 4000 GB
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Mouse	Logitech MX Master 3
Keyboard	Corsair K95 RGB
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Processor	7800X3D
Cooling	Thermalright Peerless Assasin 120
Memory	32GB at 6000/30
Video Card(s)	7900 XT soon to be replaced by 4080 Super
Storage	WD Black SN850X 4TB
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Video Card(s)	MSI RTX 2070 Super Gaming X Trio
Storage	Samsung 980 Pro 1TB + 970 Evo 500GB + 850 Pro 512GB + 860 Evo 1TB x2
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Motherboard	z490 Maximus XII Apex \| x99 Sabertooth
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Low random writes Samsung 990 Pro

VuRKaN

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