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

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lukicharms
(@lukicharms)
Eminent Member
Joined: 3 years ago
 

Hello, I am getting my Mantis Venus later on today and a GTX 1070 or 1080/Ti by the end of the week. I will be connecting my Mantis to my 2016 15" Macbook Pro RP 455 w/(Touchbar).

I was wondering if there is any significant performance difference with running bootcamp on an

SSD through the SATA port on the mantis

OR bootcamp through an SSD connected through one of the other TB3 ports on my Macbook

OR Bootcamp directly installed on my Macbooks SSD? 

 

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

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rushvora
(@rushvora)
Trusted Member
Joined: 3 years ago
 
Posted by: lukicharms

Hello, I am getting my Mantis Venus later on today and a GTX 1070 or 1080/Ti by the end of the week. I will be connecting my Mantis to my 2016 15" Macbook Pro RP 455 w/(Touchbar).

I was wondering if there is any significant performance difference with running bootcamp on an

SSD through the SATA port on the mantis

OR bootcamp through an SSD connected through one of the other TB3 ports on my Macbook

OR Bootcamp directly installed on my Macbooks SSD? 

 

Hey,

You can check out my guide if you need to, I have the same setup. There is negligible performance difference from bootcamp on internal SSD and on external SSD. However, my external SSD connects to a different TB port, and it's separate from the Venus, as it makes it easier to boot just from the SSD without the eGPU connected, if needed. I'd recommend the same, since I feel you won't be requiring the port for something else. Also, when I boot first time from macOS into Windows, I have to boot into Windows without the eGPU connected in order to switch from dedicated to integrated GPU. (See the guides)

2016 15" MacBook Pro (RP455) [6th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (Mantiz Venus) + Win10 [build link]  

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nelga
(@nelga)
Active Member
Joined: 3 years ago
 

Hey has anyone installed Windows on an external SSD mounted within the Venus? Just wondering how you got it working, and what the performance is like when paired with a Macbook Pro 2017.

ie. Mac booting from an external SSD with Windows via USB-C.

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

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

Is anyone using the SATA for an SSD?

I have a xps 13 (9350 model) hooked up to the Venus with only have an SSD hooked up atm (Samsung 850 EVO 500gb).

I tried copying about 20 gigs of videos over, it started out not bad at 245mb/s then took a nosedive to 30mb/s after about 1/3 of the way and stays this speed till the end.

Copying my games folder now and it topped out at 40 and has fallen to 30s average.

My drivers are up to date afaik, but these speeds are worse than my external usb 3 enclosures, anyone have some advice on how I can fix this?

 

edit: new problem, Mid copying the enclosure disconnected the by itself, so the drive isnt showing up anymore, thunderbolt controller shots that TUL TBX-550CA is still attached but i cant get the SSD to show up. Tried unplugging it and plugging in it back in. Works for a while and seems to disconnect at random sometimes.

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zwubel
(@zwubel)
Eminent Member
Joined: 3 years ago
 

@kisaten: I've had no such problems with the SSD inside the Venus so far. But I encountered a problem with one of my USB 3.0 external enclosures where it connects as a USB 2.0 device (shown in HWiNFO). All my other USB 3.0 enclosures work fine and at USB 3.0 speeds, it's just the one with an ASM2115 controller that won't allow anything over ~40 MB/s. My thought was that there is either a driver problem with that device or a conflict arises from the fact that the SATA bridge for the SSD inside the Venus also uses an ASMedia controller. Since I wasn't able to find another driver than the normal Microsoft one, I simply use this enclosure with a USB port directly on my laptop. Perhaps what is happening with your internal SSD is somehow related? Because the internal SSD is also connected as a USB mass storage device. Check out the attached screenshot. In it the SATA bridge for the internal SSD is marked blue and the red rectangle shows the speed the device is connected with.

venus ssd usb

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

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

Is anyone using the SATA for an SSD?

I have a xps 13 (9350 model) hooked up to the Venus with only have an SSD hooked up atm (Samsung 850 EVO 500gb).

I tried copying about 20 gigs of videos over, it started out not bad at 245mb/s then took a nosedive to 30mb/s after about 1/3 of the way and stays this speed till the end.

Copying my games folder now and it topped out at 40 and has fallen to 30s average.

My drivers are up to date afaik, but these speeds are worse than my external usb 3 enclosures, anyone have some advice on how I can fix this?

 

edit: new problem, Mid copying the enclosure disconnected the by itself, so the drive isnt showing up anymore, thunderbolt controller shots that TUL TBX-550CA is still attached but i cant get the SSD to show up. Tried unplugging it and plugging in it back in. Works for a while and seems to disconnect at random sometimes.

I think the issue is because the XPS 9350 Half Thunderbolt Speed ( Normal TB3 is PCIx4 32G, actual 22G ) but XPS 9350 is only 50% of that. if it is possible, test it with another normal laptop.

 

Mantiz: ● ●


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

Is anyone using the SATA for an SSD?

I have a xps 13 (9350 model) hooked up to the Venus with only have an SSD hooked up atm (Samsung 850 EVO 500gb).

I tried copying about 20 gigs of videos over, it started out not bad at 245mb/s then took a nosedive to 30mb/s after about 1/3 of the way and stays this speed till the end.

Copying my games folder now and it topped out at 40 and has fallen to 30s average.

My drivers are up to date afaik, but these speeds are worse than my external usb 3 enclosures, anyone have some advice on how I can fix this?

 

edit: new problem, Mid copying the enclosure disconnected the by itself, so the drive isnt showing up anymore, thunderbolt controller shots that TUL TBX-550CA is still attached but i cant get the SSD to show up. Tried unplugging it and plugging in it back in. Works for a while and seems to disconnect at random sometimes.

what is your gFX? 

Mantiz: ● ●


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

@Mymantiz_John :

 

I took out the GPU to isolate the SSD

even for 22G,  30mb/s is really slow isn't it? The drive starts out fine 100+ but then falls and stays at 30-40.

I havent done any benchmarks for the gpu yet (MSI GeForce GTX 1060 AERO ITX 6G OC) because I've been trying to figure out the hard drive and disconnection problem first.

 

2017 07 16 12h53 25
2017 07 16 12h24 48
2017 07 16 12h13 09

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

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

@Mymantiz_John :

 

I took out the GPU to isolate the SSD

even for 22G,  30mb/s is really slow isn't it? The drive starts out fine 100+ but then falls and stays at 30-40.

I havent done any benchmarks for the gpu yet (MSI GeForce GTX 1060 AERO ITX 6G OC) because I've been trying to figure out the hard drive and disconnection problem first.

 

2017 07 16 12h53 25
2017 07 16 12h24 48
2017 07 16 12h13 09

w/o the GPU, the max speed ( logical ) will be 5G ( USB 3.0 Gen I ). I'll do a experiment with XPS 9350 and copy/paste large file to see the value., Please wait for our update. 

Mantiz: ● ●


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

@Mymantiz_John :

 

I took out the GPU to isolate the SSD

even for 22G,  30mb/s is really slow isn't it? The drive starts out fine 100+ but then falls and stays at 30-40.

I havent done any benchmarks for the gpu yet (MSI GeForce GTX 1060 AERO ITX 6G OC) because I've been trying to figure out the hard drive and disconnection problem first.

 

2017 07 16 12h53 25
2017 07 16 12h24 48
2017 07 16 12h13 09

w/o the GPU, the max speed ( logical ) will be 5G ( USB 3.0 Gen I ). I'll do a experiment with XPS 9350 and copy/paste large file to see the value., Please wait for our update. 

I think you should test the " Single Large File " to see the speed between " C " to Venus, I saw the photos, you actually send the 16,xxx small break pieces file to Venus, in this scenario , the speed will drop. You can test it with a 4K Movie , a single file to measure the speed.

 

Mantiz: ● ●


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