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Samsung 960 PRO / EVO Owners Club - Page 118

post #1171 of 1258
Quote:
Originally Posted by Agent-A01 View Post

How much space is used on the drive?
Very low speeds across the board.

Try checking Turn off write cache buffer flushing and turn power management to high performance.

No change with write cache buffer flushing turned off. Power is on high performance. Indexing is turned off.

Drive has 199GB free of 466GB. Installing Magician confirmed the drive is using both the Samsung driver and PCIe Gen 3 x4.

Not sure if using the PCIe add on card would make a difference, seen some commentary on that solving similar issues, but that's very disappointing if that's the solution.

One thing, turning SATA Mode in BIOS to M2 instead of SATA Express does not seem to be retained. The board chirps, and then if I go straight back into BIOS the settings is back on SATA Express.
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post #1172 of 1258
So I just got my Samsung 960 Pro on Asus x79 ROG V with the Asus Hyper Card here are my Benches at 44% full

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post #1173 of 1258
Just got my Samsung 960 EVO 500GB in the mail today, did a clean install with win 10 creators update. 0 issues so far. Speeds look good.

CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 3327.540 MB/s
Sequential Write (Q= 32,T= 1) : 1694.737 MB/s
Random Read 4KiB (Q= 32,T= 1) : 586.539 MB/s [143198.0 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 501.337 MB/s [122396.7 IOPS]
Sequential Read (T= 1) : 2040.354 MB/s
Sequential Write (T= 1) : 1675.081 MB/s
Random Read 4KiB (Q= 1,T= 1) : 64.552 MB/s [ 15759.8 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 212.836 MB/s [ 51961.9 IOPS]

Test : 1024 MiB [C: 5.8% (26.8/465.2 GiB)] (x5) [Interval=5 sec]
Date : 2017/05/02 19:53:44
OS : Windows 10 Professional [10.0 Build 15063] (x64)
    
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post #1174 of 1258
Did a completely fresh install of everything, with only the 960 Evo connected and installing Windows 10 from USB. Immediately after installation, I ran the benchmark through Magician, and I was seeing reads around 3000 mb/s and writes around 2000 mb/s, which seemed basically perfect for what I was expecting.

Then, I encrypted the drive using Veracrypt. Reads and writes have now both slowed to around 200-300 mb/s each. Benchmark takes 15 minutes to complete.

I'm wondering if something with the onboard m.2 slot on the Asus Z170-A just isn't up to par. On a fresh install with a 6700K and 16GB of RAM, there should be little to no performance impact for encrypting the drive. I really don't know what I might be doing wrong.
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post #1175 of 1258
Quote:
Originally Posted by PEZ27 View Post

Did a completely fresh install of everything, with only the 960 Evo connected and installing Windows 10 from USB. Immediately after installation, I ran the benchmark through Magician, and I was seeing reads around 3000 mb/s and writes around 2000 mb/s, which seemed basically perfect for what I was expecting.

Then, I encrypted the drive using Veracrypt. Reads and writes have now both slowed to around 200-300 mb/s each. Benchmark takes 15 minutes to complete.

I'm wondering if something with the onboard m.2 slot on the Asus Z170-A just isn't up to par. On a fresh install with a 6700K and 16GB of RAM, there should be little to no performance impact for encrypting the drive. I really don't know what I might be doing wrong.

Samsung already has loads of security built in, not sure why you need to encrypt
    
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5TB Seagate 2.5" 5400RPM Grizzly Conductonaut on GPU and CPU Win 8.1 WSUS ;) 17.3" 1080p IPS oc'd 100hz GSYNC 
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post #1176 of 1258
Quote:
Originally Posted by caenlen View Post

Samsung already has loads of security built in, not sure why you need to encrypt

What do you mean by loads of security built in? As for why, because I want to protect my personal data. Pretty simple.
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post #1177 of 1258
Quote:
Originally Posted by PEZ27 View Post

Did a completely fresh install of everything, with only the 960 Evo connected and installing Windows 10 from USB. Immediately after installation, I ran the benchmark through Magician, and I was seeing reads around 3000 mb/s and writes around 2000 mb/s, which seemed basically perfect for what I was expecting.

Then, I encrypted the drive using Veracrypt. Reads and writes have now both slowed to around 200-300 mb/s each. Benchmark takes 15 minutes to complete.

I'm wondering if something with the onboard m.2 slot on the Asus Z170-A just isn't up to par. On a fresh install with a 6700K and 16GB of RAM, there should be little to no performance impact for encrypting the drive. I really don't know what I might be doing wrong.

Yeah, I have nearly exactly the same setup: 960 pro evo, Veracrypt FDE, using just AES, but on Windows 7. However my writes were around 1,300 MB/s, so if you really mean ~2000 mb/s on yours, that's a LOT worse than I have.

Anyways, my system should be able to handle encrypting / decrypting much much faster than the benchmark ran. Here's a screenshot with nearly all relevant system info, including Veracrypt benches:


For a while, I wondered if Veracrypt prevents TRIM from being used, but according to them, it should pass through completely fine:
https://veracrypt.codeplex.com/wikipage?title=Trim%20Operation

Quote:
Originally Posted by PEZ27 View Post

What do you mean by loads of security built in? As for why, because I want to protect my personal data. Pretty simple.

Yeah, ignore him, that's silly, the on-drive 'encryption' and a higher-level FDE like Veracrypt protect from 2 completely different types of attacks.
post #1178 of 1258
Quote:
Originally Posted by 1n5aN1aC View Post

Yeah, I have nearly exactly the same setup: 960 pro evo, Veracrypt FDE, using just AES, but on Windows 7. However my writes were around 1,300 MB/s, so if you really mean ~2000 mb/s on yours, that's a LOT worse than I have.

Anyways, my system should be able to handle encrypting / decrypting much much faster than the benchmark ran. Here's a screenshot with nearly all relevant system info, including Veracrypt benches:


For a while, I wondered if Veracrypt prevents TRIM from being used, but according to them, it should pass through completely fine:
https://veracrypt.codeplex.com/wikipage?title=Trim%20Operation

Thank you for this reply. Did you clone from another drive, or did you do a totally fresh install of your 960? Cloning my 850 would be easiest, but I'll tough out a full reinstall if it means I get rated speeds or close.

And my speed tests meant i was getting around 200-300 MB/s. Worse performance than my 850 which has the FDE on as well.

I am going to try one more fresh install using a GPT setup for Windows 10. I believe VC is compatible with GPT now, and that should also allow me to use SHA 512 (I think) which is more efficient with 64 bit machines.

Also ordered a PCIe adapter card in case none of this works. Worst case scenario I give up, stick with the 850, and convince myself I wasn't going to see or feel a difference anyways.
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post #1179 of 1258
Quote:
Originally Posted by PEZ27 View Post

Thank you for this reply. Did you clone from another drive, or did you do a totally fresh install of your 960? Cloning my 850 would be easiest, but I'll tough out a full reinstall if it means I get rated speeds or close.

And my speed tests meant i was getting around 200-300 MB/s. Worse performance than my 850 which has the FDE on as well.

I am going to try one more fresh install using a GPT setup for Windows 10. I believe VC is compatible with GPT now, and that should also allow me to use SHA 512 (I think) which is more efficient with 64 bit machines.

Also ordered a PCIe adapter card in case none of this works. Worst case scenario I give up, stick with the 850, and convince myself I wasn't going to see or feel a difference anyways.

That was with a fresh install Windows 7. I think it was MBR, I can't remember whether the Win 7 installer support GPT, I would have used it if I could.

Yeah, 200-300MB/s really sucks for a NVMe SSD, I'm been not fully happy with my 1,200MB/s. Did you make sure you're running the Samsung NVMe drivers?That sometimes makes a very large difference.
Also I'm assuming you're using just AES for the encryption, since chaining with other algorithms would definitely help security, but MASSIVELY reduces the speed of encryption/decryption.
post #1180 of 1258
Quote:
Originally Posted by 1n5aN1aC View Post

That was with a fresh install Windows 7. I think it was MBR, I can't remember whether the Win 7 installer support GPT, I would have used it if I could.

Yeah, 200-300MB/s really sucks for a NVMe SSD, I'm been not fully happy with my 1,200MB/s. Did you make sure you're running the Samsung NVMe drivers?That sometimes makes a very large difference.
Also I'm assuming you're using just AES for the encryption, since chaining with other algorithms would definitely help security, but MASSIVELY reduces the speed of encryption/decryption.

Yep. Just AES with SHA 256. Immediately installed the Samsung 2.2 NVMe driver. Then encrypted the drive.

One thing worth mentioning, when VC runs the pre test, it passes, I get the message to begin encryption, and then my system would crash and restart. I ended up changing some settings in CSM and Secure Boot, and I may have even totally gone back to optimized defaults, but it was hard to even get the drive to actually encrypt, although it eventually did. Just wasn't expecting a 85% performance reduction.

I dunno. It's been frustrating with so many variables.
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