Getting about 500MB/s less on both my Gen 4 NVME drives, can you help please?

Shaolin Chicken

Shaolin Chicken

Shaolin Chicken

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Hello,

Like the thread title says I am getting slower speeds on 2 of my NVME drives than they are rated for.
They are getting around 6500MB/s when they are rated at 7000 or a touch over.
Both are running at X4 link rate in a B650E motherboard.
When all slots are populated the bottom PCIE slot is disabled, so they should all be running at the correct speed.

Freshly installed Windows 11, latest version.

Can anyone help please?
 
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Have you got a heatsink on the drive? Could be thermal throttling?

Possible bait and switch where a later revision of the drive uses inferior NAND or a slower controller etc.
 
Thanks for the replies, I am consistently getting 500MB/s less on both read and write on my 2 gen 4 NVME DRIVES, both connected at X4.
The drives are a 2TB Kingston Fury Renegade and a 2TB Seagate Firecuda 530, both drives are on the latest firmware and all the latest drivers are installed

They are both under my motherboard heatsink, so shouldn't be thermal throttling, but will check later using crystal disk info.
I also have a Gen 5 drive which is performing as it should.

They are all installed on a B650E Taichi motherboard.

Also my Sata SSD drives are performing poorly, but apparently this is because of the ASMedia ASM1061 controller, I have read.

I think it is some setting in the motherboard that I am missing, as it has many options to play around with.

Any more help would be great.
 
Shaolin Chicken said:
Thanks for the replies, I am consistently getting 500MB/s less on both read and write on my 2 gen 4 NVME DRIVES, both connected at X4.
The drives are a 2TB Kingston Fury Renegade and a 2TB Seagate Firecuda 530, both drives are on the latest firmware and all the latest drivers are installed

They are both under my motherboard heatsink, so shouldn't be thermal throttling, but will check later using crystal disk info.
I also have a Gen 5 drive which is performing as it should.

They are all installed on a B650E Taichi motherboard.

Also my Sata SSD drives are performing poorly, but apparently this is because of the ASMedia ASM1061 controller, I have read.

I think it is some setting in the motherboard that I am missing, as it has many options to play around with.

Any more help would be great.
Click to expand...
I'll check my speeds later today for you. Same board and I have the kc3000 which is pretty much the same drive as the renegade.
 
Was about to say it has a nvme setting lol

To be honest though
You're not that far off 7000
Can't see it's going to make a difference in
Real life usage
Really depends how much time you want to spend
Just to match a benchmark with advertised speed

If you do
Also check manufacturers software for the drives
See if it has an optimise function
 
Mcnumpty2323 said:
Was about to say it has a nvme setting lol

To be honest though
You're not that far off 7000
Can't see it's going to make a difference in
Real life usage
Really depends how much time you want to spend
Just to match a benchmark with advertised speed

If you do
Also check manufacturers software for the drives
See if it has an optimise function
Click to expand...
Hi Mcnumpty, sadly there is no optimise function.
I am getting 800MB/s less on the firecuda 530, so something is amiss.

It's annoying me that I paid for fast drives, with an expensive motherboard and they are not performing as they should.
 
Shaolin Chicken said:
Hi Mcnumpty, sadly there is no optimise function.
I am getting 800MB/s less on the firecuda 530, so something is amiss.

It's annoying me that I paid for fast drives, with an expensive motherboard and they are not performing as they should.
Click to expand...
Yeah i get where you're coming from
Am literally playing with my corsair EX400U
As was getting 3200 read and 2400 write speeds
Just updated a load of drivers
And now it's 3200 and 3000
It's still capable of a bit more though

That's an external drive though
So for now that's reasonably OK

In your case it's internal drives
What I mean by you're trying to match benchmark scores
Use the biggest file you have that's a single item preferably
Large image file or an iso
Copy and paste it between the drives in both directions
Watch what your transfer speed is
You'll probably be lucky to get 3GBs /3000MBs
So even if you get your benchmark up to 7000
Real life use isn't going to approach any where near it

There's also windows version
What stuffs installed etc
I have 3 drives all with different versions of windows 11
Explorer file speed can vary dramatically
Depending on which drive I do the testing on
Ones latest up to date which currently am on 24H2
Ones 23H2 with only bare essentials on it
And Ones latest windows insider preview

Regardless of which one
Non of them hit over 3GBs actual file transfer/copy and paste
Despite the Sn850x hitting 7000 in benchmarks
 
Hey @Shaolin Chicken here are my results. Temps were between 30 - 35ºC. I don't believe I've set anything in the BIOS but I can always check if you want me to look at anything specific. These are both running Gen4.

Do they seem similar to what you are seeing?

1TB Kingston KC3000
Kingston state:
  • 7,000MB/s Read, 6,000MB/s Write
KC3000-1-TB-Gen4.jpg


2TB Kingston KC3000
Kingston state:
  • 7,000MB/s Read, 7,000MB/s Write
KC3000-2-TB-Gen4.jpg


(Slower speeds here could be due to the higher 50% usage. Not sure though.)
 
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Firegod said:
Hey @Shaolin Chicken here are my results. Temps were between 30 - 35ºC. I don't believe I've set anything in the BIOS but I can always check if you want me to look at anything specific. These are both running Gen4.

Do they seem similar to what you are seeing?

1TB Kingston KC3000
Kingston state:
  • 7,000MB/s Read, 6,000MB/s Write
KC3000-1-TB-Gen4.jpg


2TB Kingston KC3000
Kingston state:
  • 7,000MB/s Read, 7,000MB/s Write
KC3000-2-TB-Gen4.jpg


(Slower speeds here could be due to the higher 50% usage. Not sure though.)
Click to expand...
Thanks Firegod for going to the trouble of testing.
You're 1TB KC3000 results are spot on.
My Fury Renegade 2TB shows around 6400 MB/s read and 6400 MB/s for write so are a lot less, similar to your 2TB results,
and my 2TB Firecuda is getting the same results as the Kingston Renegade, this is on brand new drives.

Something odd is going on, not sure what though.

I don't know what to check in the bios sadly, if you haven't done anything special, then it's probably not worth checking.

Is your 1TB Kingston in the Gen 5 slot, as that one on mine is getting the correct results?
 
Shaolin Chicken said:
Thanks Firegod for going to the trouble of testing.
You're 1TB KC3000 results are spot on.
My Fury Renegade 2TB shows around 6400 MB/s read and 6400 MB/s for write so are a lot less, similar to your 2TB results,
and my 2TB Firecuda is getting the same results as the Kingston Renegade, this is on brand new drives.

Something odd is going on, not sure what though.

I don't know what to check in the bios sadly, if you haven't done anything special, then it's probably not worth checking.

Is your 1TB Kingston in the Gen 5 slot, as that one on mine is getting the correct results?
Click to expand...
Hey mate, yeah my 1TB is the OS drive so I have that in the Blazing (Gen5) M.2 slot located by the memory DIMMS. The 2TB is just for games which is in the Hyper M.2 slot under the GPU.

How full are those two 2TB drives you have?

I've re-ran the benchmark against my 2TB drive, just in case it was a duff result, but it came out the same. ~6400 MB/s read and 6000 MB/s write.

I'll have a look in the BIOS anyway just for the lol's.
 
Firegod said:
Hey mate, yeah my 1TB is the OS drive so I have that in the Blazing (Gen5) M.2 slot located by the memory DIMMS. The 2TB is just for games which is in the Hyper M.2 slot under the GPU.

How full are those two 2TB drives you have?

I've re-ran the benchmark against my 2TB drive, just in case it was a duff result, but it came out the same. ~6400 MB/s read and 6000 MB/s write.

I'll have a look in the BIOS anyway just for the lol's.
Click to expand...
Hi Firegod, they are both brand new drives in the Hyper M.2 slots, have just been benchmarking them, seems we are both getting lower results in them slots.

Good luck in the Bios, I couldn't find anything.
Let me know if you come across any setting that can help.
 
Yeah don't think its bios setting
Not touched anything in my bios to do
With drives

Drivers or windows would be top of
My list

One thing you could check though
Not at pc so may get instructions a bit off
Memory isn't what it was
Go into device manager
Find the disk entry
Find the disk/disks you're interested in
Right click one
Select policies
See what's there and try the opposite of what's set
Think it's something about write caching etc

Edit
Think i missed click properties
After right click
But you probably get the idea anyway
 
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can b650e do 2 gen 4 nvme at full speed without some kind of extra controller? what specific board is it?

edit from memeory on 4 lanes on b65e come form the cpu.
 
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