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2990wx Build Bottleneck

PepsiBandit
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I am looking to build a new desktop using a 2990wx with 128gb ram.

 

The workload consists of running multiple instances of a program in parallel. My main question is if this is a good fit for my workload. I am currently running 2 other computers doing the same workload.
~90% CPU usage and 56GB RAM on a 1950x. (42 instances)
~90% CPU usage and 31GB RAM on a 1700x. (28 instances)

 

I would ideally want about 40-60% more performance out of using a 2990wx for a new system. 

 

System price before cpu and ram: 800€
Total price with a 2950x and 64GB: 2050€ 
Total price with a 2990wx and 128GB: 3150€

Basic config: 
Case: Inter-Tech 4u 4129N +some rails
PSU: 750w RMx
GPU: A spare GTX 680 that I had left over
Heatsink: Enermax LiqTech TR4 240
Motherboard: ASRock x399 Taichi
SSD: 970 EVO m.2


What I would like to work out is if I would have issues with the memory bandwidth if I used a 2990wx. From what I have read, that is the main cause of workloads not scaling as well.

Any other suggestions for the hardware would also be welcomed. 
A normal heatsink could be nice but it would need to fit in to a 4u case.
I also have not looked to see if there are better motherboards out since gen 2 threadrippers were released. 

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Overclocked, or left at stock, or stock frequency and undervolted?

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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Just now, Jurrunio said:

Overclocked, or left at stock, or stock frequency and undervolted?

It would probably be at stock or slightly overclocked. It will run 24/7 in a server rack by my desk so it would be hard to keep it very cool. 

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18 minutes ago, PepsiBandit said:

It would probably be at stock or slightly overclocked. It will run 24/7 in a server rack by my desk so it would be hard to keep it very cool. 

I'm more worried about the power supply, but at stock it's fine.

 

The problem with 2990wx is that some cores dont have direct access to memory, which means some of your VMs can run noticeably slower than others. If they are working in things dependent of other VMs, then it will suck.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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it does. but its picky with memory none the less. some that should work dont. its been mention more then once on you tube reviews and site reviews

MSI x399 sli plus  | AMD theardripper 2990wx all core 3ghz lock |Thermaltake flo ring 360 | EVGA 2080, Zotac 2080 |Gskill Ripjaws 128GB 3000 MHz | Corsair RM1200i |150tb | Asus tuff gaming mid tower| 10gb NIC

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