DGX Spark vs Quad 3090s Local AI Benchmarks - Best Rig for $4K?

Video Description

Nvidia has released the DGX Spark Local Ai "Supercomputer" and thanks to some great benchmarking from @lmsys-org we added to those results with my Quad 3090 Local AI Server on the same models and quants. Quad 3090 Ryzen AI Rig Build 2025 Video w/cheaper components https://youtu.be/So7tqRSZ0s8 and Written Build Guide with all the Updated AI Rig Component Options and Benchmarks https://digitalspaceport.com/local-ai-home-server-build-at-high-end-3500-5000-price/ LMSys Blog https://lmsys.org/blog/2025-10-13-nvidia-dgx-spark/ Perf Sheet https://docs.google.com/spreadsheets/d/1SF1u0J2vJ-ou-R_Ry1JZQ0iscOZL8UKHpdVFr85tNLU/edit?gid=0#gid=0 LMSys Video https://youtu.be/-3r2woTQjec 🤖 QUAD 3090 Ryzen Local Ai Server Hardware 3090 24GB GPU (x4) https://geni.us/GPU3090 CPU R5 9600X https://geni.us/AMD-9600X-CPU B650 Eagle AX MOBO https://geni.us/B650-Eagle-AX-MOBO Peerless Assassin CPU Cooler https://geni.us/Peerless-Assassin DDR5 64GB (32GBx2) G Skill RAM https://geni.us/DDR5_Trident_Z5_RAM Cheap PCIe Risers https://geni.us/Cheap-PCIe-Risers GPU Rack Frame https://geni.us/GPU_Rack_Frame CORSAIR HX1500i PSU https://geni.us/Corsair_HX1500iPSU OG QUAD 3090 EPYC RIG Supermicro H12ssl-i MOBO (better option vs mz32-ar0) https://geni.us/MBD_H12SSL-I-O Gigabyte MZ32-AR0 MOBO https://geni.us/mz32-ar0_motherboard AMD 7V13 (newer, faster vs 7702) https://geni.us/EPYC_7V13_CPU 512GB (8x32GB) DDR4 2400 RAM https://geni.us/512GB-DDR4-LRDIMM PCIe4 Risers (x4) https://geni.us/PCIe4_Riser_Cable AMD SP3 Air Cooler (easier vs water cooler) https://geni.us/EPYC_SP3_COOLER iCUE H170i water cooler https://geni.us/iCUE_H170i_Capellix (sTRX4 fits SP3 and retention kit comes with the CAPELLIX) 4i SFF-8654 to 4i SFF-8654 (x4, not needed for H12SSL-i) https://geni.us/SFF8654_to_SFF8654 ARCTIC MX4 Thermal Paste https://geni.us/Arctic_ThermalPaste Thermal GPU Pads https://geni.us/Kritical-Thermal-Pads HDD Rack Screws for Fans https://geni.us/HDD_RackScrews More Local AI GPU Options 5060ti 16GB GPU https://geni.us/5060Ti-16GB AMD RX 9060 XT 16GB GPU https://geni.us/AMD-9060-XT-16GB Ways to Support: 🚀 Join as a member for members-only content and extra perks https://www.youtube.com/c/digitalspaceport/join ☕ Buy Me a Coffee https://www.buymeacoffee.com/digitalspaceport 🔳 Patreon https://www.patreon.com/digitalspaceport 👍 Subscribe youtube.com/c/digitalspaceport?sub_confirmation=1 🌐 Check out the Website https://digitalspaceport.com Chapters 0:00 NVIDIA DGX SPARK LOCAL AI 3:57 Gemma3 12b Q4 5:42 Gemma3 12b Q8 6:34 Gemma3 27b Q4 7:28 Gemma3 27b Q8 8:35 GPT-OSS 120b 10:56 GPT-OSS 20b 11:55 Qwen3 32b Q4 12:46 QWen3 32b q8 13:32 Local Ai Benchmark Analysis DGX Spark vs Quad 3090 ***** As an Amazon Associate I earn from qualifying purchases. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network. *****