Is 8TB faster than 4TB SSD?

[Sitti]

I'm going to order new 16" MBP and I'm deciding between 8TB or 4TB SSD. Is there any speed difference between these two? I remember reading a while back that 8TB SSD in previous MBP was faster than 4TB. Is that the case?

 

[CWallace]

In general, the larger the SSD, the faster the read/write speeds due to the additional cells. So an 8TB should be faster, but the largest increases are usually seen going from the smallest size (256GB/512GB) to the next (1TB/2TB) and then it starts to drop off as you get in the 4TB/8TB range.

 

[Sitti]

thanks!!

 

[garethjs]

Yup but with the m1 pro 13" no difference was seen between the 512gb and the larger models.

 

[Chancha]

Apple's website does say 7.4 GB/s is tested using 8TB BTO, with that I assume it means you won't reach that speed with the lesser capacity.

 

[Pressure]

Apple's website does say 7.4 GB/s is tested using 8TB BTO, with that I assume it means you won't reach that speed with the lesser capacity.

You will reach that speed with all NAND flash channels populated and depending on how full the drive is.

On other NVMe solutions the max performance is obtained from 1TB and up.

 

[Chancha]

You will reach that speed with all NAND flash channels populated and depending on how full the drive is.

On other NVMe solutions the max performance is obtained from 1TB and up.

This reminds me, if the Max's 400GB/s memory bandwidth advantage over the 200 on Pro would mean anything to SSD performance? And RAM amount as well for the matter.

 

[ponzicoinbro]

I think from 2TB upwards the speeds will be more or less the same.

The 1TB maybe 10-15% slower than the rest.

 

[Pressure]

I think from 2TB upwards the speeds will be more or less the same.

The 1TB maybe 10-15% slower than the rest.

That's not how it works.

As long as all NAND flash channels are populated you will get maximum performance.

 

[Pressure]

This reminds me, if the Max's 400GB/s memory bandwidth advantage over the 200 on Pro would mean anything to SSD performance? And RAM amount as well for the matter.

No, they are not correlated in any way.

 

[aevan]

You will reach that speed with all NAND flash channels populated and depending on how full the drive is.

On other NVMe solutions the max performance is obtained from 1TB and up.

I took the 512Gb SSD. It is enough for my needs, but I worry it will be noticeably slower than 1Tb/2Tb/higher models.

 

[Pressure]

I took the 512Gb SSD. It is enough for my needs, but I worry it will be noticeably slower than 1Tb/2Tb/higher models.

Write speed will most likely be affected but not read speed.

 

[Melotz]

It's faster, however, it's definitely not worth it if you only care about the performance.

 

[zarathu]

Apple generally uses Samsung for their drives. By all accounts this looks like their screaming 980 so you could look at the different versions of the Samsung top of the line SSD and find out.

 

[Pressure]

Apple generally uses Samsung for their drives. By all accounts this looks like their screaming 980 so you could look at the different versions of the Samsung top of the line SSD and find out.

Not for quite some years.

The T2 chip have actually served as the NAND flash controller before being integrated directly into the M1 chips.