Bad write speeds, Defective Gen 5 drive?

[Teletha]

i have the corsair MP700 2TB version and i dont seem to have quite good Write speeds? am i doing something wrong?

The drive has to have Gen 5 pcie speed since the read is OK. Temps never went above 55C during testing too. it is on the latest firmware too. 

 

 

[mMontana]

Your current config is the one in signature?

How old is your BIOS? DId you check if there's any firmware update for your SSD?

[venomtail]

Is the PCIE lane not being split up? Like 5.0 x4 going through a chiplet or whatever's the terminology, I'm bad at these.

[Teletha]

3 minutes ago, mMontana said:

Your current config is the one in signature?

How old is your BIOS? DId you check if there's any firmware update for your SSD?

yes config in sign. bios on mb is latest, ssd firmware updated newly 1 week ago or so

3 minutes ago, venomtail said:

Is the PCIE lane not being split up? Like 5.0 x4 going through a chiplet or whatever's the terminology, I'm bad at these.

im getting the full speed on Read so there should still be the same bandwidth for the write testing.

[mMontana]

All things considered, I'd knock to Corsair for... consistency of the data.

[Teletha]

hm ye might be a RMA, god dammit its my C drive too have to find another 2tb drive in the meantime ugh... 

[mMontana]

Start with... asking. Contact support for understand if the data is consistent and if there's anything that could be done on the device (or windows).

Maybe they already have some procedure/best practice but until asked, no information can be provided to you.

I'm assuming that heatsink is correctly seated for the drive...

[GuiltySpark_]

Worth a shot, but is CDM in NVMe mode? Try a larger same size than 1GB. 

[Electronics Wizardy]

Run trim and wait a bit. Your can only get those high write speeds for a short duration, and if you were doing other tasks, the cache may be full already.

[mMontana]

Indeed @Electronics Wizardy has a point.

[Teletha]

19 minutes ago, Electronics Wizardy said:

Run trim and wait a bit. Your can only get those high write speeds for a short duration, and if you were doing other tasks, the cache may be full already.

haven't been doing much on it cant see how the cache would be full. and i mean it should be able to flush the cache in a couple of mins max since it has the crazy speed.

 

i ran 16 mb test file and it still gives same write speeds

 

[Teletha]

1 hour ago, GuiltySpark_ said:

Worth a shot, but is CDM in NVMe mode? Try a larger same size than 1GB. 

CDM? tried 16gb with same results 

[GuiltySpark_]

Just now, Teletha said:

CDM? tried 16gb with same results 

Crystal Disk Mark (the application you're using). Also I guess what I meant was use a larger test file. 

 

Settings>NVMe
 

[kokosnh]

Look if the write buffer is enable for it in disk management.
post here a screenshot from crystaldiskinfo of it, as well as „as ssd benchmark” screenshot ( whole )   

 

i would also try to run it in Gen 4.0 x 4 M.2 slot. 

 

and the sample size for benchmark, use 4GiB or larger. 

[Teletha]

5 minutes ago, kokosnh said:

Look if the write buffer is enable for it in disk management.
post here a screenshot from crystaldiskinfo of it, as well as as ssd benchmark screenshot ( whole )   

 

i would also try to run it in Gen 4.0 x 4 M.2 slot. 

 

and the sample size for benchmark, use 4GiB or larger. 

 

Not sure why its saying pcie 1 when i get above pcie 1x4 speeds on read? o.O

[Teletha]

17 minutes ago, kokosnh said:

Look if the write buffer is enable for it in disk management.
post here a screenshot from crystaldiskinfo of it, as well as „as ssd benchmark” screenshot ( whole )   

 

i would also try to run it in Gen 4.0 x 4 M.2 slot. 

 

and the sample size for benchmark, use 4GiB or larger. 

Write cache was off !