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[Official] Samsung 950 PRO Owners Club - Page 60

post #591 of 1906
Quote:
Originally Posted by DS4130 View Post

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...

I see. I forgot that Broadwell-E will use the same X99 chipset. I thought that Intel would improve it.

Quote:
Originally Posted by ghostrider85 View Post

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.

I've got your point, thanks. Although I'm not sure about the "It has to read from another drive" part. As I've said in my first post, the first intention was to have the theorethical write speeds of 3GB/s for Windows booting and games, and another 600mb/s Sata SSD for general storage. This means I won't be transfering files from one drive to another (only when needed), but use that 3GB/s speed only to deal with itself, like installing stuff, instant game loading and instant boot. However, it looks like this setup won't work at all, as neither M.2 Raid0 is not bootable on X99, and Sata SSD's can boot faster than PCI-E SSD's (according to you). Bummer thumbsdownsmileyanim.gif

Now I'm completely lost and not sure about what to buy anymore. I just wanted one of the fastest drives on the market for instant booting and instant game loadings and a 600mb/s Sata SSD to store everything else
Edited by Wagnelles - 1/31/16 at 3:11pm

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post #592 of 1906
Not sure what you consider fast boot, but my PC boots in 12sec from power ON with 1xM.2 512GB 950Pro, 1xSSD and 2xWD Blacks installed on a fresh W10 install. In my books that's pretty damn good.
post #593 of 1906
Quote:
Originally Posted by Wagnelles View Post

I see. I forgot that Broadwell-E will use the same X99 chipset. I thought that Intel would improve it.
I've got your point, thanks. Although I'm not sure about the "It has to read from another drive" part. As I've said in my first post, the first intention was to have the theorethical write speeds of 3GB/s for Windows booting and games, and another 600mb/s Sata SSD for general storage. This means I won't be transfering files from one drive to another (only when needed), but use that 3GB/s speed only to deal with itself, like installing stuff, instant game loading and instant boot. However, it looks like this setup won't work at all, as neither M.2 Raid0 is not bootable on X99, and Sata SSD's can boot faster than PCI-E SSD's (according to you). Bummer thumbsdownsmileyanim.gif

Now I'm completely lost and not sure about what to buy anymore. I just wanted one of the fastest drives on the market for instant booting and instant game loadings and a 600mb/s Sata SSD to store everything else

A single 950 pro boots faster the raid zero 950 pro, and a single sata ssd boots faster than a single 950 pro, raid slows down boot times not faster.
loading games wont make any difference compared to any standard ssd. So there is really no point with raid zero 950 pro.

If you are expecting instantaneous load times with games, it won't gonna happen, at least not until intel's 3d xpoint
Edited by ghostrider85 - 1/31/16 at 3:22pm
post #594 of 1906
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 - You will find limited value in using multiple M.2 devices in RAID. DMI 3.0 has a maximum transfer rate of 8GT/s. Roughly translated, this should allow for up to 64GB/s of bandwidth for DMI 3.0 but you would be wrong. While the performance penalty of DMI 3.0 is extremely low, around 1.5% overhead, you are still limited by PCI-Express on the backend. In other words after overhead is accounted for you are going to see an actual limit of 40GB/s of bandwidth across the DMI bus. This effectively means that while you can RAID two M.2 devices together, you won’t see the same type of scaling we're used to from SSDs. You should see a return of 1.4x or 1.5x at most over a single drive. . In other words while you can RAID multiple M.2 drives together you will encounter a point of diminishing returns very quickly. You will get a small performance increase for having that second drive, but not much. With the 950Pro in RAID0 you should be able to see an improvement but as the drives get faster that improvement will diminish. Personally I would stick with one 950Pro for now and when the 1TB drive comes out then get that one and sell the 512GB.

2 - As per above, don;t RAID it unless you're after benchmarks.

3 - Single 950Pro for OS is the right idea.

4 - They do not get that hot. If you have good airflow in the case and keep it away from video cards, you will barely reach 60C during stress test. Normal everyday use will hardly ever see those temps.
post #595 of 1906
Quote:
Originally Posted by ghostrider85 View Post

A single 950 pro boots faster the raid zero 950 pro, and a single sata ssd boots faster than a single 950 pro, raid slows down boot times not faster.
loading games wont make any difference compared to any standard ssd. So there is really no point with raid zero 950 pro.

If you are expecting instantaneous load times with games, it won't gonna happen, at least not until intel's 3d xpoint

I gave a little search about this, and it seems very promising. Any expected release date? Maybe this year or Q1 2017?
Quote:
Originally Posted by AceIsme View Post

1 - You will find limited value in using multiple M.2 devices in RAID. DMI 3.0 has a maximum transfer rate of 8GT/s. Roughly translated, this should allow for up to 64GB/s of bandwidth for DMI 3.0 but you would be wrong. While the performance penalty of DMI 3.0 is extremely low, around 1.5% overhead, you are still limited by PCI-Express on the backend. In other words after overhead is accounted for you are going to see an actual limit of 40GB/s of bandwidth across the DMI bus. This effectively means that while you can RAID two M.2 devices together, you won’t see the same type of scaling we're used to from SSDs. You should see a return of 1.4x or 1.5x at most over a single drive. . In other words while you can RAID multiple M.2 drives together you will encounter a point of diminishing returns very quickly. You will get a small performance increase for having that second drive, but not much. With the 950Pro in RAID0 you should be able to see an improvement but as the drives get faster that improvement will diminish. Personally I would stick with one 950Pro for now and when the 1TB drive comes out then get that one and sell the 512GB.

2 - As per above, don;t RAID it unless you're after benchmarks.

3 - Single 950Pro for OS is the right idea.

4 - They do not get that hot. If you have good airflow in the case and keep it away from video cards, you will barely reach 60C during stress test. Normal everyday use will hardly ever see those temps.

Is there any decent Nvme 2TB M.2 drive on the makret? 1TB is just not enough for me.

I can do either this or buy 2 1TB 950's (and use them as separated drives, with one of them for booting and both for games), and a third 4TB Sata Samsung 850 Pro for anything else. I'm not going to build the PC right now so I'm pretty sure the 1TB 950 variant and the 4TB 850 variant will be available at the time.
post #596 of 1906
Agree with previous posters. Single 950 is probably best. One for OS and one for storage would be best of both worlds. Reads scale very poorly at this point, writes scale very well, and 4k numbers are very good for R0.
I did loads of testing in R0 with both my 950's before settling on one for OS and one for storage. Here is an example of what the numbers looked like in R0

post #597 of 1906
So

1) download the drivers from samsung link only ? (no intel drivers ?)

2) What about SSD tips - tweaks - it's the same ?

3) Should unplug the GTX 970 during windows 10 installation ?
Edited by Phantomas 007 - 2/1/16 at 2:17am
post #598 of 1906
Anyone else with an Asus motherboard experiencing occasional d4 errors on cold boot?
Behemoth
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 5960x Rampage V Extreme Titan X Pascal Corsair Vengeance LPX [16GB DDR4 @ 2666MHz] 
Hard DriveHard DriveCoolingOS
Samsung 950 Pro M.2 512GB Synology NAS [10 drives] Custom loop [mostly EKWB] Windows 10 Pro 
MonitorMonitorKeyboardPower
ASUS PG279Q Dell UltraSharp UP2716D Das Keyboard Professional 4 Corsair HX1200i 
CaseMouseOtherOther
Phanteks Enthoo Primo Logitech G900 Beyerdynamic Custom One Pro Rode NT-USB 
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Behemoth
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 5960x Rampage V Extreme Titan X Pascal Corsair Vengeance LPX [16GB DDR4 @ 2666MHz] 
Hard DriveHard DriveCoolingOS
Samsung 950 Pro M.2 512GB Synology NAS [10 drives] Custom loop [mostly EKWB] Windows 10 Pro 
MonitorMonitorKeyboardPower
ASUS PG279Q Dell UltraSharp UP2716D Das Keyboard Professional 4 Corsair HX1200i 
CaseMouseOtherOther
Phanteks Enthoo Primo Logitech G900 Beyerdynamic Custom One Pro Rode NT-USB 
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post #599 of 1906
Quote:
Originally Posted by Leyaena View Post

Anyone else with an Asus motherboard experiencing occasional d4 errors on cold boot?
Hi yes I had an issue with the d4 error as I had two m2 SSD's and it was a driver conflict I eventually did a reinstall with only the 950 installed and booting OK have you a 2nd m2 drive? I had the sm951 256gb and 950 together when I had the issue also remove the Samsung NVMe drivers and let it use the Microsoft ones and see how you go
post #600 of 1906
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