Why was I advised to install OS on 2TB SAMSUNG 970 EVO PLUS M.2 PCIe NVMe, not 50GB Samsung 860 EVO 2.5" SSD?

[ggabu]

Here is a new quote for a laptop I am thinking about getting from PCSpecialists:
Chassis & Display
Octane Series: 17.3" Matte Full HD 144Hz 72% NTSC LED Widescreen (1920x1080) + G-Sync
Processor (CPU)
Intel® Core™ i9 Eight Core Processor i9-9900K (3.6GHz) 16MB Cache

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Memory (RAM)
32GB Corsair 2666MHz SODIMM DDR4 (2 x 16GB)
Graphics Card
NVIDIA® GeForce® RTX 2080 - 8.0GB GDDR6 Video RAM - DirectX® 12.1
1st Storage Drive
250GB Samsung 860 EVO 2.5" SSD, SATA 6Gb/s (upto 550MB/sR | 520MB/sW)
1st M.2 SSD Drive
2TB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3300MB/W)
Intel Optane Memory
32GB INTEL® M10 OPTANE MEMORY - USE WITH MECHANICAL HDD
Memory Card Reader
Integrated 6 in 1 Card Reader (SD /Mini SD/ SDHC / SDXC / MMC / RSMMC)
AC Adaptor
1 x 330W AC Adaptor
Battery
2 x Octane Series Battery Pack, 82WH (One Spare)
Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead)
Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
Sound Card
Intel 2 Channel High Definition Audio + MIC/Headphone Jack
Bluetooth & Wireless
GIGABIT LAN & KILLER™ WIRELESS-AC 1550 M.2 GAMING 802.11AC + BLUETOOTH 5.0
USB/Thunderbolt Options
4 x USB 3.0 Ports + 2 x USB 3.1 Type C Ports
Keyboard Language
OCTANE SERIES BACKLIT UK KEYBOARD WITH NUMBER PAD
Operating System
Genuine Windows 10 Professional 64 Bit - inc. Single Licence [MUP-00003]
Operating System Language
United Kingdom - English Language
Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Supplied on DVD
Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required)
Anti-Virus
NO ANTI-VIRUS SOFTWARE
Browser
Firefox™
Carry Case
Wenger Legacy 17" Triple Case
Laptop Cooling Stands
CoolerMaster NotePal L2 Laptop Cooler, upto 17.3 inch
Notebook Mouse
INTEGRATED 2 BUTTON TOUCHPAD MOUSE
Webcam
INTEGRATED 2.0 MP FULL HD WEBCAM
Warranty
3 Year Gold Warranty (2 Year Collect & Return, 2 Year Parts, 3 Year Labour)
Home Installation
Technician Assisted Installation & Set-Up
Dead Pixel Guarantee
1 Year Dead Pixel Guarantee Inc. Labour & Carriage Costs
Chassis
Clevo P775TM1-G (8GB RTX-2080, 144Hz, G-Sync)
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 6 to 8 working days
Promotional Item
Get Total War: Three Kingdoms & More w/ select Intel CPUs!
Welcome Book
PCSpecialist Welcome Book - United Kingdom & Republic of Ireland

I chose to have the OS installed on the 250GB Samsung 860 EVO 2.5" SSD, SATA 6Gb/s (upto 550MB/sR | 520MB/sW), keeping the larger and faster 2TB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3300MB/W) for storage. However, when I completed the quote, an advisory message appeared stating this was not recommended and I should install the OS on the 2TB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3300MB/W) which to me seems a complete waste.

I am missing/not understanding something? I am a Software Engineer by trade, so I am quite comfortable with the technical details of computers, although not being a Hardware Engineer, I would not call myself a hardware expert. Any thoughts?

 

[SpyderTracks]

You always keep the OS and programs on the fastest drive.

NVME drives (most of them) are about 7 times the speeds of a normal SATA SSD which the 860 Evo is.

Basically NVME is the newer format and can support much much faster speeds. SATA SSD's are old now and usually used for storage or in older PC's that don't have an M2 slot.

You can put it the other way around if you like, but you'd notice the difference if you put OS and programs on the NVME.

 

[ggabu]

Fantastic!!! Thanks SpyderTracks. I simply swapped the the drive capacities around i.e. a 250GB NVME for the OS and a 2TB 860 EVO 2.5" SSD for storage and saved myself £200. Thanks for the advice.

 

[SpyderTracks]

Fantastic!!! Thanks SpyderTracks. I simply swapped the the drive capacities around i.e. a 250GB NVME for the OS and a 2TB 860 EVO 2.5" SSD for storage and saved myself £200. Thanks for the advice.

No worries, you'll be blown away by the responsiveness on the M2 drive and you picked the best performer out of the bunch, just an epic drive.

 

[Oussebon]

It's not a 2TB EVO. It's a 2TB QVO. Which is a budget drive. It's still an SSD ofc. What are you keeping on it?

Also what's with the Optane module?

 

[ubuysa]

And why 32GB of RAM? I seriously doubt you'll ever be able to fully utilise that. Depending on what applications you use of course.

And why WIn 10 Pro? What Pro features do you need?