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Options concerning DDR4 RAM and i7 9700 CPU


I am a bioinformatics grad student looking to build a PC. One thing that is quite important is sufficient processing power and RAM. But as I mostly work in R, which doesn't handle multi-cores well, I am leaning towards an i7 9700 cpu instead of one of AMD processors (e.g. threadripper). Having several cores is still important (I like to run other applications while R is working in the other background) but I don't think more cores will necessary give me better performance.


The issue for the i7 9700 is RAM, which is a huge limiting factor in my field. For most people, 32/64gb is huge.... in my field, not so much. That being said, I do have access to a server farm which means truly-large projects can be remotely run. But, I would still like to maximize the amount of RAM I can have in my PC, as I do so much at home. Thus, what are my options with the i7 9700 cpu?


From what I understand, the cpu "supports" 128gb but the Z390 motherboards (taichi, gigabyte master) don't seem to support that much. I read about future "double-stack" RAM sticks, but they aren't out and I have no way of knowing if they would work on one of those motherboards.

Essentially, I am trying to give myself flexibility in case I need more RAM.

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i7-9700 supports up to 128GB.

Most motherboards that support this CPU however do not support past 64GB.


If you can get your hands on a server/workstation, then your options are much bigger and better.

Take an LGA 1366-based system for example:

Dual Xeon X5650 6c/12t CPUs: 30 USD on Ebay

A motherboard to support both CPUs: 90-100 USD on Ebay

DDR3 ECC memory: $32/16GB(single stick)


Throw in some miscellaneous parts, and you've got a fair bit of computing power at your disposal. I have an HP Proliant ML330 G6 that supports up to 192GB of memory iirc(been a while since I checked, it's either 192 or 144GB).

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7820X could be a way out, but $800 US atm...Idea scrapped that is.


7800X at $360 could be a choice. 6 cores with HT pretty much performs just like 8 core without HT, while X299 platform lets you get 128GB RAM today.

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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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