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Vega 64 Liquid Cooled + Razor Core X
 

Vega 64 Liquid Cooled + Razor Core X  

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Monaldinio
(@monaldinio)
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Feb 27, 2019 9:12 pm  

Hello Forum, 

just a quick question. I could buy a Vega 64 Liquid. Is the Razer Core X able to deliver the needed power? Because on the package of the vega 64 LC is written "PSU 1000W needed". And the Razer Core X have "onley" 650W...and 500W for the gpu.

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Jyin
 Jyin
(@jyin)
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Feb 27, 2019 9:35 pm  

The 1000w number is for when you are building a desktop pc with that GPU.
For building the eGPU, you don’t need quite that much.

However, Sonnet does not support the Vega 64/LC even with the 650W model.
I do use a Vega FE/LC myself with a 2017 iMac.
Check out my build if you are interested. 

J

2017 iMac 5k 27inch RP580 TB3 + Vega FE/LC + Sonnet 550 + EVGA GeForce RTX 2080 Ti FTW3 ULTRA GAMING + Sonnet 550 + Mac/Win10


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Monaldinio
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Feb 27, 2019 9:56 pm  

Thanks for the quick answer! I read your build, its a nice one and detailed. But you have replaced the 550 PSU with EVGA SuperNOVA 850. So... Im not sure if 650W are enough... You are?! 

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
(@juan_c_yunis)
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Feb 27, 2019 10:03 pm  
Posted by: Monaldinio

Thanks for the quick answer! I read your build, its a nice one and detailed. But you have replaced the 550 PSU with EVGA SuperNOVA 850. So... Im not sure if 650W are enough... You are?! 

Quick question, how much are you paying for the Vega 64 LC?, because you could get a Radeon VII which performs way better and works perfectly fine with the Razer Core X. Also Vega 64 has some random power spikes which the 650W PSU could tolerate but if you have the LC and you do overclock maybe it won't be able to support it. I'm currently running a Radeon VII overclocked with my Core X and i have 0 issues with power, i tested it with synthetic benchmarks and games. One downside is that proper Mac support for Radeon VII is not there yet, you can get it to work with Mojave 10.14.4 Beta 3 but it could be somewhat unstable. If you are using Windows, then it is wonderful, no problems at all but make sure to update the BIOS of the card to the latest version.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Monaldinio
(@monaldinio)
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Feb 27, 2019 10:12 pm  

I could have the vega 64 for 400€. Its a used one but in good shape.  I realy like to buy the Radeon VII...but that means 749€. And i don't use windows. I would not overcook the V64 LC. And, as far as i know, there are 2 bios, switchable on the card. A normal one and a power save bios... The power save bios have nearly the same performance

This post was modified 4 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
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Feb 27, 2019 10:16 pm  

@monaldinio not a bad price, and yeah if you don't plan in overclocking it, you could actually undervolt it to make it more efficient and power saving. Are you using Windows? because in order to undervolt it, you can easily do it with Windows using AMD'S own tool "Wattman" or with Mac with Soft PowerPlay Tables (kinda complicated), but yeah it think it should work.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Jyin
 Jyin
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Jyin
 Jyin
(@jyin)
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Feb 27, 2019 10:56 pm  

You can do both under-volting and over-clocking at same time.
It’s actually somewhat desirable to tweak the fan profile anyways.

It’s really not all that hard if you use a pre-encoded string.
All you need to do is turn off SIP (I keep it off), copy/paste into plist, rebuild cache, and reboot.
Takes 2min tops.
You just have to do it after every system update.

J

2017 iMac 5k 27inch RP580 TB3 + Vega FE/LC + Sonnet 550 + EVGA GeForce RTX 2080 Ti FTW3 ULTRA GAMING + Sonnet 550 + Mac/Win10


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Juan C. Yunis
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Feb 27, 2019 11:15 pm  

@jyin yes, that's correct is not that hard but for some users could be a little bit challenging. Also he has to let us know if he plans to power the computer with the egpu, meaning less power for the card (potentially 100w less). 

@monaldinio what computer and os are using for your egpu box?

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Jyin
 Jyin
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Feb 27, 2019 11:29 pm  

He is on iMac, so no PD, which would help. 
Sonnet used to add PD into consideration, but they removed that verbage from the FAQ.

I subscribe to the school of ‘When in doubt, opt for more power’ 😏

J

2017 iMac 5k 27inch RP580 TB3 + Vega FE/LC + Sonnet 550 + EVGA GeForce RTX 2080 Ti FTW3 ULTRA GAMING + Sonnet 550 + Mac/Win10


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Monaldinio
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Feb 28, 2019 6:51 am  

Thanks for your advice. 
I don't use windows 10, and i don't want to install bootcamp. Maybe it would make some things easier for me, for example undervolting or overclocking with wattman. And doing this script stuff by editing some files with every boot, that's not an alternative for me. I bought a IMac because this machine runs well out of the box. And the egpu stuff should work in plug and play stile. 

So, after all pro and cons, in your opinion, the Vega 64 will not work with the Core X because of the high power consumption? If it does, i will buy the Vega 64 Sapphire Nitro+.

This post was modified 4 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
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Feb 28, 2019 7:02 am  

It’s not at boot but at every OS update. However if you are able to buy the nitro+ I think that would be a better choice because is brand new with warranty right? Also the custom cooler would give you better temperatures, clocks, and less noise.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Monaldinio
(@monaldinio)
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Feb 28, 2019 7:19 am  

Yes, the nitro would be a brand new one. But i read the Liquid one should be very quiet... Man, what a hard decision   😥
And all the reviews i read told me, the Vega64 LQ is faster the the Air cooled Variante.

I had a little conversation with the Razer support they told me the core x is not compatible with the Vega 64 liquid.

So... The Radeon works fine with the Core X? But have no driver for Mojave...the driver will come soon? 

This post was modified 4 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
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Feb 28, 2019 12:38 pm  

@monaldinio yes, water would give you more headroom for a higher overclock, less noise and better temperatures. Radeon Vii you can make it work with current Mojave 10.14.4 beta 3 however is very unstable, native support should with final release 10.14.4 is out, maybe a month away. Good thing about buying new is that you do get 3 free games.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Jyin
 Jyin
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Feb 28, 2019 8:41 pm  

Some amount of tinkering is inevitable with eGPU.
In many cases, the GPU will made fair amount of noise too. It is possible to make them less noisy, but that will require yet more tinkering / upgrading.

If you are expecting it to 'just work', I think you are better off getting iMac Pro.

Another note, the Core X does not support LC out of box. You will have to remove the exhaust fan and velcro the radiator in place.
The behavior of GPUs at very limit of PSU's capability is unpredictable at best. You should also be aware that power requirement/performance changes day to day, impacted by things like age of electronics, ambient temperature / humidity.

J

2017 iMac 5k 27inch RP580 TB3 + Vega FE/LC + Sonnet 550 + EVGA GeForce RTX 2080 Ti FTW3 ULTRA GAMING + Sonnet 550 + Mac/Win10


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Monaldinio
(@monaldinio)
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Mar 1, 2019 7:26 am  

Thanks for all your good advices.

Yesterday i ordered the Vega 64 Sapphire Nitro+. Its almost as fast as the Liquid Version, maybe 2 FPS slower than the Liquid one. For 401€ including 3 Games...that was an offer i couldn't refuse.

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
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Mar 1, 2019 11:27 am  

Good for you man, it is a great deal, I sold my Vega 64 Limited Edition for 467 and bought the Radeon Vii for 790 and got the 3 games. Enjoy your new card

This post was modified 4 months ago

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Monaldinio
(@monaldinio)
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Mar 8, 2019 10:09 pm  

Hello Forum, I am back to tell you about my experiences. Unfortunately, they are disappointing. I built everything together. The Vega64 is recognized under mojave. The benchmark results are really disappointing down. I hope I made a mistake. I can not imagine that this should be the performance increase i hope for. I wonder, in picture 8 I see that the core x is connected with only 2 PCI Express lanes?!? I changed the thunderbolt port...without better results. Made all this benchmark in osx with the internal display. Last but not least, the egpu boots only up to 1.46?! 100 mhz to low in my opinion. 

Valley Vega64
Valley Radeon Pro 580
Heaven Radeon Pro 580
Heaven Vega64
System 1
System 2
System 3
System 4
System 5
This post was modified 3 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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mac_editor
(@mac_editor)
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Mar 8, 2019 10:48 pm  

@monaldinio CMD+SHFT+4 for screenshots 🙂

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
----
Troubleshooting eGPUs on macOS
Command Line Swiss Knife
eGPU Hardware Chart
Multiple Build Guides
----
Current: MacBook Pro RP560X + 480/R9 Fury/Vega 64 | GTX 780/1070
Previous: 2014 MacBook Pro 750M + 480/R9 Fury | GTX 780/980 Ti/1070


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Monaldinio
(@monaldinio)
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Mar 8, 2019 10:54 pm  

🙂 cmd+shift+3

Any ideas why the performance is so bad? If that's all I can do with an egpu on the internal display, 
then I'll give it back.  😥 
This post was modified 3 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
(@juan_c_yunis)
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Mar 8, 2019 11:32 pm  

@monaldinio yes, it looks like you are running it in 2x mode, I just checked my Mac Mini 2018, and it says 4x link, also you are testing opengl titles, and opengl with amd is pretty bad, you should compare Metal based apps or opencl. Try geekbench 4, LuxMark.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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mac_editor
(@mac_editor)
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Posts: 2086
Mar 9, 2019 1:03 am  

@monaldinio That's for the entire screen. 4 let's you specify regions (which it seemed you intended in your photos).

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
----
Troubleshooting eGPUs on macOS
Command Line Swiss Knife
eGPU Hardware Chart
Multiple Build Guides
----
Current: MacBook Pro RP560X + 480/R9 Fury/Vega 64 | GTX 780/1070
Previous: 2014 MacBook Pro 750M + 480/R9 Fury | GTX 780/980 Ti/1070


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Monaldinio
(@monaldinio)
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Mar 9, 2019 7:25 am  
Posted by: Juan C. Yunis

@monaldinio yes, it looks like you are running it in 2x mode, I just checked my Mac Mini 2018, and it says 4x link, also you are testing opengl titles, and opengl with amd is pretty bad, you should compare Metal based apps or opencl. Try geekbench 4, LuxMark.

My IMac has an NVMe SSD. Is it possible that not enough PCIe Lanes left?

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Monaldinio
(@monaldinio)
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Mar 9, 2019 1:55 pm  

I tried Lexmark...

LuxMark Radeon Pro 580

LuxMark Sapphire Nitro Vega 64

This post was modified 3 months ago

iMac 2017 27 5k | i5-7600k | 16 GB Ram | 512 GB NVMe SSD | Radeon Pro 580 | Razer Core X + Sapphire Radeon RX Vega 64 Nitro+


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Juan C. Yunis
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Mar 9, 2019 4:46 pm  

@monaldinio that looks pretty good, i think that is what i used to get when i had my Vega 64. I get 40k with my VII. So, I think you should try your real life use cases. Also eGPU really shines with external monitors, in your case you have an iMac so it is understandable, but also there are some apps that let you use all the GPUs available in your system, try Geekbench 4 and you could have a better way to compare performance.

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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