We help IT Professionals succeed at work.

locating fast solid state computers

al4629740
al4629740 used Ask the Experts™
on
I’m buying a new computer and would like to get a fast solid state hard drive that has read write time greater than 1000mb/sec.  what should I look for?  M.2 drives?  what exactly should I be looking for?  also do the surface pro tablet have fast solid states in that speed range?
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Dr. KlahnPrincipal Software Engineer
Commented:
If you want speed faster than 600 MB/sec, SATA is out of the question as the SATA 3 bandwidth is 600 MB/sec.

A four-lane M.2 SSD has a theoretical capacity of 2000 MB/sec.  I/M/O this borders on the ridiculous; that is a raw, theoretical number with no relation to the real world.  No application can possibly process data that quickly and no hardware can push data around the system that quickly while simultaneously doing something useful with it.  Well, perhaps a server with 32 GB of memory could ... for 16 seconds.
IT Consultant
Commented:
There are so many online comparison sites for the SSD available currently, can refer this link: https://www.tomshardware.com/reviews/best-ssds,3891.html

so, it depends on your budget, but as long as you buy the new SSD form reputed brand with warranty, no need to bother too much on speed.

for surface pro 7,
Microsoft needs to use faster hard drives in its Surface products or at least stop charging so much to upgrade storage capacity. The Surface Pro 7's 256GB SSD took 19 seconds to duplicate 4.97GB of multimedia files, which equates to a transfer rate of 267.9 megabytes per second. That's only a tad faster than the Surface Pro 6's sluggish SSD (203 MBps) and falls far behind the XPS 13 2-in-1 (463 MBps) and the category average (500.4 MBps)

please refer this link: https://www.laptopmag.com/reviews/laptops/microsoft-surface-pro-7

Author

Commented:
How is it possible to find the rate of speed on some of these laptops that are for sale. It doesn’t seem like that’s an easy thing to find
Kesavan JeganarayananIT Consultant

Commented:
Refer this link for some details: https://www.tomshardware.com/reviews/ssd-buying-guide,5602.html

Anything above 256GB capacity SSD is good now a days.
The only way you can get that sort of performance is to go for a persistent memory based solution. Unfortunately, at this point in time, that is only available on servers, with certain Xeon CPUs.

Persistent memory is a  tier between SSD and RAM. It is more expensive and faster than SSD, but cheaper and slower than RAM. Persistent memory is also non- volatile.

Her are a few links to various vendors supporting these products.

https://www.intel.com.au/content/www/au/en/architecture-and-technology/optane-dc-persistent-memory.html

https://www.dell.com/support/manuals/au/en/aubsd1/poweredge-t640/nvdimm-n_ug_pub/introduction?guid=guid-8884370c-5553-4089-b613-a3c570b56f0e&lang=en-us

https://www.hpe.com/au/en/servers/persistent-memory.html

https://www.computerworld.com/article/3051135/whats-in-hpes-persistent-memory.html

Author

Commented:
what about when the specs say PCIe?  what is that referring to?
Top Expert 2016
Commented:
View the specs.
SATA hard drive assume 5400 RPM
SSD asume SATA hard drive
It it is NVME SSD then it will be faster than SATA SSD.

If you are looking for extreme speed then a laptop is out of the question. A notebook/tablet even more so. A laptop is a system built with a lot of compromises. Lack of cooling options, lack of power options. If you get a laptop that has dual display cards then when you activate the faster card then your battery endurance drops drastically.
Sequential Read 1GB Speeds (Crystal Disk Mark 7)
Samsung EVO NVME 3555 read 2263 /write
Intel 660 NVME 1532 read 1462 Write
SATA 6GB 5400 RPM 158 read 153 write
SATA SSD ADATA 512GB 397 Read 356 write (SAS Raid Controller 6GB)
PCIe is an expansion slot for desktop PCs and servers. Some high end SSDs primarily intended for server use fit into a PCIe slot. You might get something of that type to meet your performance requirements, but it will be expensive, and require a desktop PC or server.

Something like this:

https://www.intel.com.au/content/www/au/en/products/memory-storage/solid-state-drives/data-center-ssds/optane-dc-ssd-series/optane-dc-p4800x-series/p4800x-750gb-aic.html
SATA SSDs use the physical and logic connections that were designed for conventional (spinning magnetic disk) hard drives.  Though SSDs are much faster than HDs, they are limited by that interface.

Newer systems can take advantage of PCIe/NVMe interfaces.  PCIe refers to the physical interface where NVMe is the logical one.  Those can utilize the much faster capabilities of solid state components and are not dramatically more expensive than SATA SSDs.

Such device connect either to an M.2 PCIe connector or to the PCIe connectors in the back of the motherboard.

Some laptops support PCIe/NVMe storage as bootable devices, but they tend to be the more expensive ones.

In general, I try to steer my clients toward new systems that support such devices.  The cost difference is not that great (unless manufacturers inflate the cost differences) and the performance difference is significant.
Top Expert 2013
Commented:
you either need an expensive NVMe drive or review your needs since there might be lots of different ways to achieve the performance you expect through different means including using async writes. a regular SSD with SAS connectivity would also do the trick for small bursts. both of these are likely very expensive on a laptop but i have not checked recently.
Top Expert 2014
Commented:
You can get the performance you want for a few seconds but once the SLC cache on the SSD is full it will slow down to MLC or QLC speed, nobody makes a SLC only SSD for laptops/desktops. This graph I pinched from Tom's Hardware shows the performance drop once the cache is used up.

Cache write effects
@andyalder:
Very informative graph... thanks!
Do you know what the scale is for the X direction?  Are those MB written?
Top Expert 2014

Commented:
I don't know which review I got it from but these is a similar one at https://www.tomshw.it/hardware/adata-xpg-sx8200-pro-recensione/prestazioni-adata-xpg-sx8200-pro-1tb/ , they do similar on all their SSD reviews. Pertinent thing is sustained Vs burst, See the MLC Samsung 970 PRO giving constant high performance (at $400/TB) Vs cached TLC and QLC drives going dead slow when the cache runs out. We don't really know whether asker needs that constant write performance or just for a few seconds.

Edit: I can't read Italian but X is in seconds.

sequenziali per 15 minuti per misurare sia la dimensione del buffer SLC che le prestazioni dopo che il buffer è stato saturato.
Top Expert 2013

Commented:
Google translate says :
sequencial for 15 minutes for the SLC buffer dimensions to double the buffer status and buffer status.saturation