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[Official] Samsung 950 PRO Owners Club - Page 59

post #581 of 1900
https://www.pugetsystems.com/labs/articles/Overview-of-M-2-SSDs-586/

M.2 Drive Throughput
by Connection Theoretical
Maximum Throughput Est. Real-World
Maximum Throughput

SATA III 6.0 Gb/s (750 MB/s) 4.8 Gb/s (600 MB/s)
PCI-E 2.0 x2 8 Gb/s (1 GB/s) 6.4 Gb/s (800 MB/s)
PCI-E 2.0 x4 16 Gb/s (2 GB/s) 12.8 Gb/s (1.6 GB/s)
PCI-E 3.0 x4 32 Gb/s (4 GB/s) 31.5 Gb/s (3.9 GB/s)
The "theoretical maximum throughput" is the number that a lot of vendors and manufactures like to use when talking about SATA or PCI-E, but there is a certain amount of overhead when transferring data that prevents a drive from ever hitting this theoretical throughput. Taking the overhead due to encoding into account gives us the "estimated real-world maximum throughput". This does not mean that every M.2 PCI-E 2.0 x4 drive can reach speeds of ~1.6 GB/s, but simply that this is roughly the best possible speed any M.2 PCI-E 2.0 x4 drive can achieve.
Edited by DooRules - 1/30/16 at 6:46am

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post #582 of 1900
Just got a 950 256GB. Any suggestion for Win 10 installation ? What sata 3 drivers and from where ?
post #583 of 1900
Quote:
Originally Posted by Phantomas 007 View Post

Just got a 950 256GB. Any suggestion for Win 10 installation ? What sata 3 drivers and from where ?

Welcome, i have the same SSD as you.

This is all you need to know about the Samsung drive and how to install it properly:

http://www.samsung.com/global/business/semiconductor/minisite/SSD/downloads/document/Samsung_SSD_950_PRO_White_paper.pdf

Good luck thumb.gif
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hurricane
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post #584 of 1900
Looking forward to buy the 950 Pro and join the club! But I have a few questions to ask first:


1 - Is it true that a M.2 Raid0 setup will indeed have significantly faster reads and writes? I'm asking this because high end SATA SSD's doesn't have any performance improvements in Raid0 mode.

2 - I plan to make this 950 Raid0 my primary and bootable drives. From what I know, only Z170 motherboards can handle RAID0 boot with M.2 drives. And I'm not sure if a 6700k does have enough PCI Lanes for a 2-Way SLI setup, a PCI-E soundcard, and both 950 PRO's. Not sure if I should wait for the i7 6900 CPU's to arrive. So I'm in need of some advice here. I really appreciate your help biggrin.gif

3 - Not a question, but I'm aware of the Raid0 risks. Because of that, I plan to buy a third Sata drive to handle all of my important data, leaving the 950's for Windows, drivers and games only.

4 - TEMPS. I watched a 950 Pro stress video and I saw them getting, very, veery hot. They can easily get beyond 100C. Is this really normal? I'm a temperature freak and I do my best to get my stuff very well cooled, so I'm in need of some knowledge here too.

Thanks!
post #585 of 1900
Quote:
Originally Posted by Wagnelles View Post

Looking forward to buy the 950 Pro and join the club! But I have a few questions to ask first:


1 - Is it true that a M.2 Raid0 setup will indeed have significantly faster reads and writes? I'm asking this because high end SATA SSD's doesn't have any performance improvements in Raid0 mode.

2 - I plan to make this 950 Raid0 my primary and bootable drives. From what I know, only Z170 motherboards can handle RAID0 boot with M.2 drives. And I'm not sure if a 6700k does have enough PCI Lanes for a 2-Way SLI setup, a PCI-E soundcard, and both 950 PRO's. Not sure if I should wait for the i7 6900 CPU's to arrive. So I'm in need of some advice here. I really appreciate your help biggrin.gif

3 - Not a question, but I'm aware of the Raid0 risks. Because of that, I plan to buy a third Sata drive to handle all of my important data, leaving the 950's for Windows, drivers and games only.

4 - TEMPS. I watched a 950 Pro stress video and I saw them getting, very, veery hot. They can easily get beyond 100C. Is this really normal? I'm a temperature freak and I do my best to get my stuff very well cooled, so I'm in need of some knowledge here too.

Thanks!

1. Raid zero on ANY DRIVE will double the read and write throughput speeds. Raid zero 950 pro is useless though.

2. Z170 can't NATIVELY support sli and a sound card and 2 950 pro, only sli and one pcie device.

4. It is normal, but you won't gonna reach those temps unless you are running full write speeds.
post #586 of 1900
Quote:
Originally Posted by ghostrider85 View Post

1. Raid zero on ANY DRIVE will double the read and write throughput speeds. Raid zero 950 pro is useless though.

2. Z170 can't NATIVELY support sli and a sound card and 2 950 pro, only sli and one pcie device.

4. It is normal, but you won't gonna reach those temps unless you are running full write speeds.

Why is it useless if it doubles read/write speeds? I don't get it. And yes, I'm new to SSDs, so please forgive me for the dumb questions.

About the Z170, that's a deal breaker for me. Can you confirm if is it possible to make a M.2 Raid0 Bootable on X99? Otherwise, my only option (as far as I know) is to wait for i7 69xx.
post #587 of 1900
Quote:
Originally Posted by Wagnelles View Post

Why is it useless if it doubles read/write speeds? I don't get it. And yes, I'm new to SSDs, so please forgive me for the dumb questions.

About the Z170, that's a deal breaker for me. Can you confirm if is it possible to make a M.2 Raid0 Bootable on X99? Otherwise, my only option (as far as I know) is to wait for i7 69xx.

It would only be useful if you were able to feed the drive data to be written at the increased sequential speeds...

Not possible on X99 and as Broadwell-E also uses the same platform (PCIe SSD's not connecting through the PCH) I wouldn't imagine RAID M.2 would be an option...
post #588 of 1900
Quote:
Originally Posted by Wagnelles View Post

Why is it useless if it doubles read/write speeds? I don't get it. And yes, I'm new to SSDs, so please forgive me for the dumb questions.

About the Z170, that's a deal breaker for me. Can you confirm if is it possible to make a M.2 Raid0 Bootable on X99? Otherwise, my only option (as far as I know) is to wait for i7 69xx.

the z170 chipset only support 20 pcie lanes natively, the x99 chipset supports up to 40 depending on the cpu.

why is the raid 0 useless? 950 pro in raid zero have theorethical write speeds of 3000 MB/s, yeah that is fast, but it has to read from another drive right? what other drive do you have? let's say you got an amazing 2.5 inch ssd which have a read and write speed of 600 MB/s which is the limit of sata 3, then you will only be writing 600 MB/s on your 950 pro.

you see, your 950 pro can only write as fast as your other drive's read speed. it doesn't matter how fast your 950 pro if the drive you are copying from is slow.

boot times? sata ssds boots faster than pcie ssd. game load times? it doesn't make any difference at all.
Edited by ghostrider85 - 1/31/16 at 1:20pm
post #589 of 1900
Quote:
Originally Posted by hurricane28 View Post

I think so too..

I am maxing my PCIe Gen2 x4 out though. I had contact with Gigabyte and the rep explained it to me.

This is how it works, PCIe Gen2 has 500 MB/s per lane so if my SSD is connected to an x4 slot i should theoretically get 2000 MB/s which is 20 GB/sec as advertised. Here is the catch, this is BEFORE the overhead and that is like 25% or more, so when i am getting 16K on the reads i maxing out my PCIe Gen2 lanes..

BUT, when i connect it to an PCIe Gen2 x8 lane, i should get speeds about the same as PCIe Gen3 x4 theoretically. Sooo i think i am going to buy an PCIe M.2 adapter in order to see if i am getting the full speed of my SSD.

This is what i see in my BIOS btw:


I see that its connected in bus 3 which is correct, but dev and func is at 0, this normal?

I think the fastest adapter u can get is PCIe gen 2 4x which is like you said, max 1600MB real.
However if you look at Samsung 950 Pro 256GB, you will see that the max speed for the drive is 2200/900MB/s.
So basically, your system is limiting only the READ speed and I honestly dont think you will see any difference between 1600 and 2200MB/s.

Same applies to 512GB version. The max speed is 2500/1600MB so clearly, you will be again limiting only the max READ speed. Again, I dont think you will see any difference between 2500 and 1600MB/s read speeds.

Write speed is unaffected by PCIe Gen2 4x.


cheers.gif
post #590 of 1900
Quote:
Originally Posted by fat4l View Post

I think the fastest adapter u can get is PCIe gen 2 4x which is like you said, max 1600MB real.
However if you look at Samsung 950 Pro 256GB, you will see that the max speed for the drive is 2200/900MB/s.
So basically, your system is limiting only the READ speed and I honestly dont think you will see any difference between 1600 and 2200MB/s.

Same applies to 512GB version. The max speed is 2500/1600MB so clearly, you will be again limiting only the max READ speed. Again, I dont think you will see any difference between 2500 and 1600MB/s read speeds.

Write speed is unaffected by PCIe Gen2 4x.


cheers.gif

Yeah, you are right.

You will never see those scores you get in benches in real live everyday usage. It just made me wondered if there was something wrong with my system because i couldn't get the advertised speeds but after a couple of hours spending on the net searching about this, i discovered that its me that didn't understand and now i do, i see that there is nothing wrong with my scores.

I get even higher IOPS than most Intel systems get, max IOPS were above 300K in AS SSD at some point.

I do get some weird things in Windows 10 tho, boot times are very slow compared to my Samsung 850 Pro but only when i connect my other 2 hard drives.. when i disconnect them its fine and Windows 10 is faster too. Kinda weird behavior if you ask me, never had this issue before.

Also my PC shuts down completely and than restarts after a couple of seconds when i reboot windows and when i do a cold boot the system fires up real quick and than shuts down again and than it reboots.
hurricane
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AMD RYZEN 1600 Asus Crosshair hero 6 MSI GTX 970 gaming 4G G.Skill F4-3200C14D-16GFX 
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Samsung 950 pro, 256 GB Alphacool Eisbaer 360 Windows 10 Pro Asus VG248Q 
KeyboardPowerCaseMouse
Logitech G910 Cooler Master V850 Phanteks Enthoo Luxe tempered glass Logitech G502 
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hurricane
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CPUMotherboardGraphicsRAM
AMD RYZEN 1600 Asus Crosshair hero 6 MSI GTX 970 gaming 4G G.Skill F4-3200C14D-16GFX 
Hard DriveCoolingOSMonitor
Samsung 950 pro, 256 GB Alphacool Eisbaer 360 Windows 10 Pro Asus VG248Q 
KeyboardPowerCaseMouse
Logitech G910 Cooler Master V850 Phanteks Enthoo Luxe tempered glass Logitech G502 
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logitech Z-2300 
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