Slow NVME? 160mbps huh?

[TexasBulldog74]

On crystal diskmark my speeds are basically what they are rated but transferring between 2 of them its as slow as my mechanical drive which gives me 150-220mbps.

 

This is transferring a benchmark program from a Teamgroup that checks out at 3,200mpbs read / 2,600mpbs write to an Intel 660p 2,000mpbs read / 1800 mpbs write.

 

Mobo is x570 Unify with R9 5900x and this is on a fresh install today.

 

Really curious why so slow

 

 

[Guest]

Are you transferring many small files or you are transferring few big files?

[DigitalGoat]

25 minutes ago, TexasBulldog74 said:

On crystal diskmark my speeds are basically what they are rated but transferring between 2 of them its as slow as my mechanical drive which gives me 150-220mbps.

 

This is transferring a benchmark program from a Teamgroup that checks out at 3,200mpbs read / 2,600mpbs write to an Intel 660p 2,000mpbs read / 1800 mpbs write.

 

Mobo is x570 Unify with R9 5900x and this is on a fresh install today.

 

Really curious why so slow

 

 

From Tom's Hardware review, worth a read: Intel SSD 660p 2TB Review: a QLC Bargain (Update) | Tom's Hardware (tomshardware.com)

 

First, the 660p has a static SLC cache that is 6GB, 12GB, or 24GB, depending upon SSD capacity. The static cache capacity never changes, but the SSD has a larger dynamic SLC cache pool that boosts performance further. The dynamic cache capacity adjusts bi-directionally based upon the amount of data stored on the SSD. In other words, the cache shrinks as you fill up the drive but expands as you delete items. Higher-capacity 660p's have larger dynamic SLC caches, as outlined in the chart above.

The SLC pool flushes to the QLC flash during idle periods, but Intel has a new on-demand performance boost option if you need your SLC performance back right away after bombarding the drive with writes. The feature allows you to flush the SLC cache to the QLC flash manually. Intel added this feature to its SSD optimizer in SSD Toolbox version 3.5.3.

 

I assume from your quoted read/ write speeds you have the 1Tb version?

[Noah0302]

Test it with crystal disk mark, that will show you if its the SSD itself, or just the task youre trying to do (small files, extracting...)

[Origami Cactus]

1 hour ago, TexasBulldog74 said:

Really curious why so slow

I mean, just open task manager and see which SSD is at 100%? Then you will have your answer.

But as other said, once the SLC cache is filled on a QLC drive, it will drop to hdd speeds, so it is what is happening here. So wait for the SLC cache to flush itself, and you will get the performance back.

[TexasBulldog74]

Thanks all for the reply's.  I did not know that about the Intel 660p... super interesting.  As for the file being large chunks or a lot of small files its rather big files.  I just moved it again from one to another and yeah in task manager the write drive is pegged at 100%.

 

 

[Wooden Law - Black]

According to AnandTech's sustained write speed test, the Intel 660p after the SLC cache (which is very small, 12GB for 1TB SKU) drop to around 200 MB/s when it's full.

What model is the Team Group SSD? 

[TexasBulldog74]

4 hours ago, Wooden Law - Black said:

According to AnandTech's sustained write speed test, the Intel 660p after the SLC cache (which is very small, 12GB for 1TB SKU) drop to around 200 MB/s when it's full.

What model is the Team Group SSD? 

 

[Wooden Law - Black]

At least the Team Group great...