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Samsung 950 Pro - PCIe Slot information

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Chasim_

Junior Member
I have a Samsung 950 Pro 256gb in a new system with an Asus Z170 Pro Gaming motherboard. In the Samsung Magician software, it currently reports my PCIe Slot information as:

Link Speed Current: 8Gbps, Max: 8Gbps
Link Width Current: 4x, Max: 4x
Bandwidth Current: 32Gbps, Max: 32Gbps

From what I understand (and even though it likely does not really matter), the Link Speed should be 10 Gbps? I vaguely recall that it previously reported 10 Gbps (although I am not completely positive). I just want to confirm that the available PCIe bandwidth is the maximum that it can/should be.

Thanks!
 
Chasim_ said:
I have a Samsung 950 Pro 256gb in a new system with an Asus Z170 Pro Gaming motherboard. In the Samsung Magician software, it currently reports my PCIe Slot information as:

Link Speed Current: 8Gbps, Max: 8Gbps
Link Width Current: 4x, Max: 4x
Bandwidth Current: 32Gbps, Max: 32Gbps

From what I understand (and even though it likely does not really matter), the Link Speed should be 10 Gbps? I vaguely recall that it previously reported 10 Gbps (although I am not completely positive). I just want to confirm that the available PCIe bandwidth is the maximum that it can/should be.

Thanks!
Click to expand...

What does Magician report as the actual read/write speed? I have the 512GB version and Magician reports 2.4GB/s and 1.4GB/s.


Brian
 
The link speed of PCIe 3.0 is 8Gbps. It uses more efficient encoding (128/130 vs 8/10) than earlier PCIe revisions, hence it's able to achieve ~1GB/s with 8Gbps raw bitrate compared to PCIe 2.0 requiring 5Gbps to reach 500MB/s.

Everything is as they should be, no worries.
 
Hellhammer said:
The link speed of PCIe 3.0 is 8Gbps. It uses more efficient encoding (128/130 vs 8/10) than earlier PCIe revisions, hence it's able to achieve ~1GB/s with 8Gbps raw bitrate compared to PCIe 2.0 requiring 5Gbps to reach 500MB/s.

Everything is as they should be, no worries.
Click to expand...

Thanks for the reply!

P.S. Brian Stirling - The read/write speeds are pretty much what they should be, although my Random Read seems to take a hit from running Bitlocker (which is funny because I thought that Write would be affected).
 
Chasim_ said:
Thanks for the reply!

P.S. Brian Stirling - The read/write speeds are pretty much what they should be, although my Random Read seems to take a hit from running Bitlocker (which is funny because I thought that Write would be affected).
Click to expand...


If the data is encoded then it must be decoded and that takes time...


Brina
 
Mines reported as 10Gbps
Samsung-SSD-950PRO-250GB-Review-magician.jpg
 
Brian Stirling said:
If the data is encoded then it must be decoded and that takes time...


Brina
Click to expand...
Hmm. Doesn't it have Opal 2 like the 850 (evo and pro). That should mean that the data is written to the drive and read from the drive already encrypted and most drive encryption stuff just secures the drive. I thought Bit locker could hook into that rather than re-encrypting encrypted data.
 
Topweasel said:
Hmm. Doesn't it have Opal 2 like the 850 (evo and pro). That should mean that the data is written to the drive and read from the drive already encrypted and most drive encryption stuff just secures the drive. I thought Bit locker could hook into that rather than re-encrypting encrypted data.
Click to expand...

The 950 Pro doesn't support OPAL or E-Drive yet, so his Bitlocker is software level, so he will get a performance hit.
 
Palorim12 said:
The 950 Pro doesn't support OPAL or E-Drive yet, so his Bitlocker is software level, so he will get a performance hit.
Click to expand...

Makes sense. Though you would think their fastest top of the line semi consumer drive would include the tech that their cheaper brethren has. Though I am guessing the NVME controller is probably to blame.
 
Topweasel said:
Makes sense. Though you would think their fastest top of the line semi consumer drive would include the tech that their cheaper brethren has. Though I am guessing the NVME controller is probably to blame.
Click to expand...


Its like when the 840 EVO first came out, they added OPAL and E-DRIVE capability through a FW update several months after it was released. They said they are going to do the same for this drive.
 
aviator79 said:
You are possibly using an older version of Magician. Check out the latest
Click to expand...

Version 4.9.0 reports the links as 10gbps
Version 4.9.7 reports the links as 8bps

Somewhere between they decided to change the reported link from theoretical to actual throughput.
 
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