Mantiz Venus - different SSD performance using enclosure ports versus MacBook po...
 
Notifications
Clear all

Mantiz Venus - different SSD performance using enclosure ports versus MacBook ports?  

 of  8
  RSS

nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

@kisaten, does the Macbook allow Windows OS USB media boot fom a Mantiz USB 3.0 port? That's important if you want to install Windows OS USB installation media. Otherwise would need to plug it into the USB-C (TB3) port directly.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
goalque
(@goalque)
Noble Member Admin
Joined: 4 years ago
 

For me, they look pretty similar results, except in the last picture where Seq Q32T1 write speed has dropped down to 132 MB/s.

CrustalDiskMark does not yield consistent numbers. There is always variation. Valley/Heaven are not bandwidth hungry.

automate-eGPU EFIapple_set_os.efi

Mid 2015 15-inch MacBook Pro eGPU Master Thread

 
2018 13" MacBook Pro [8th,4C,U] + Radeon VII @ 32Gbps-TB3 (ASUS XG Station Pro) + Win10 1809 [build link]  


ReplyQuote
kisaten
(@kisaten)
Active Member
Joined: 3 years ago
 
Posted by: franketto

Yes, Crystal is better to test with 3/5 passes: it's more accurate. So, let's say, under eGPU stress, SSD goes:

Read 280MB/s

Write 290MB/s

This is a loss of about 18% on Read and 10% on write. So it seems Nando is quite right.

 

No wonder, real copy are lower speed than bench transfer: it's normal, not a Mantiz limit.

But you should make a copy with only one very large file, not many files, one about 30GB or more. Only this way we could compare with the seq Crystal bench.

@franketto I copied a large folder of mixed files for "real world" numbers -how most people might experience it. Since the majority of my files arent over 10gb.

@nando4 I'm running an xps 9350, maybe you meant to ask @Mymantiz_John ?

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

@kisaten, same good question applies to your XPS 9350. Can you boot USB 3.0 Windows 10 installation media a Mantiz USB 3.0 port? We are seeing if the notebook UEFI firmware can communicate successfully with the enclosure's Genesys Logic USB 3.0 controller to allow USB 3.0 media boot. This is before the OS has booted, so there are no drivers loaded yet.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
kisaten
(@kisaten)
Active Member
Joined: 3 years ago
 

Bios is showing both the sata and usb drive connected on the Venus (allowing me to add them as boot options,) so I assume that that's a yes?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

nando4 liked
ReplyQuote
Rusty
(@rusty)
New Member
Joined: 3 years ago
 

Managed to get it going in the end, thank you Smile

 

On another note, I am only getting around 140mb/s writes with a Samsung Pro 850 via the SATA port.

Via USB I get 225mb/s writes.... this doesn't seem right to me?

When I had this installed in my iMac I was getting around 500mb/s write and reads.

Did someone say there is a firmware update to do with this?

If so when, and how would I update?

 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
Mymantiz_John
(@mymantiz_john)
Vendor
Joined: 3 years ago
 
Posted by: Rusty

Managed to get it going in the end, thank you Smile

 

On another note, I am only getting around 140mb/s writes with a Samsung Pro 850 via the SATA port.

Via USB I get 225mb/s writes.... this doesn't seem right to me?

When I had this installed in my iMac I was getting around 500mb/s write and reads.

Did someone say there is a firmware update to do with this?

If so when, and how would I update?

 

 

Mantiz Venus Ports are under USB 3.1 Gen I bandwidth which is 5G. MBP is Gen II, 10G, which is larger than Venus 5G. 

 

Mantiz: ● ●


wimpzilla liked
ReplyQuote
franketto
(@franketto)
Trusted Member
Joined: 3 years ago
 

This does not explain that behaviour!

He's saying its SSD connected with SATA cable inside its Mac, is capable of 500MB/s.

 

When he connects this unit to the USB 3.1 5Gb of Mantiz he gets 225MB/s.

BUT

when he connects the SSD with the SATA port of the Mantiz he gets only 140 MB/s.

So, we know that SATA port of Mantiz isn't a real SATA port bandwidth because it's connected the same on the USB3.1 5Gb/s interface, but why SATA 5Gb/s is so much lower than USB 5Gb/s on the same board??

We are at a paradox that it's better to connect an SSD enclosure on USB3.1 port instead of a direct SATA connection (even if it's always a 5Gb USB bandwidth)...

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
gnu
 gnu
(@gnu)
Active Member
Joined: 3 years ago
 
Posted by: Rusty

Managed to get it going in the end, thank you Smile

 

On another note, I am only getting around 140mb/s writes with a Samsung Pro 850 via the SATA port.

Via USB I get 225mb/s writes.... this doesn't seem right to me?

When I had this installed in my iMac I was getting around 500mb/s write and reads.

Did someone say there is a firmware update to do with this?

If so when, and how would I update?

 

 

I also have an EVO 850 and was disappointed by read/write performance using SATA port. My perfs are better than yours though, It goes up to 330mb/s for write and 370mb/s for read, but should be around 500mb/s as you said.

I don't know if the bottleneck is hardware or software, but I don't think there's any firmware upgrade available for the Venus...

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
ikir
 ikir
(@ikir)
Prominent Member
Joined: 4 years ago
 

I get higher numbers with Venus SATA port, last time I checked it was about 300MB/s


MacBook Pro 2018 Touch Bar i7 quad-core 2.7Ghz - 16GB RAM - 512GB PCIe SSD
my awesome Radeon VII eGPU
my Mantiz Venus extreme mod with Sapphire Nitro+ RX Vega 64

 
2018 13" MacBook Pro [8th,4C,U] + Radeon VII @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15 [build link]  


ReplyQuote
 of  8