A home server built for private LLM chat (Ollama + Open WebUI), local code completion and LoRA fine-tuning — big VRAM, lots of RAM. Prices and availability for Spain.
Recommended build
Architecture: tower build on LGA 1700 + Intel Z790
≈ €2,632
Total
Assessmentbalanced
cpu
10C/16T · 4.7 GHz · LGA 1700 · 65 W
motherboard
Intel Z790 · ATX · 3× M.2
ram
128 GB DDR4 · 3200 MT/s
case
ATX/MATX/ITX/EATX · 2× 3.5″
cooling
passive · 150 W TDP
psu
1000 W · titanium · modular
storage
NVME · 8 TB
gpu
24 GB VRAM · 140 W · CUDA
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Based on your goals you need roughly 12 CPU threads, 80GB RAM and 4TB of storage with ai GPU capability. This system runs 24/7, so energy matters. Recommended: the Value build — most for your money — 2632€ purchase, ~62W idle, ~290€/year energy (≈870€ over 3 years). Intel Core i5 14400F: 16 threads covers the 12 needed with headroom. Motherboard Intel Z790 (LGA 1700): matches the CPU socket and case size. RAM: 128GB DDR4 — meets the 80GB the workload requires. NVIDIA RTX PRO 4000 Blackwell 24GB: 24GB VRAM selected for your ai GPU need. Chose Intel Core i5 14400F over AMD Ryzen 5 5600T OEM/Tray: better overall fit for your priorities. Build DNA: performance 83, value 62, efficiency 49, expandability 100, silence 95, longevity 100 — overall 72/100. Heads-up: Total (2632€) exceeds your budget (2500€) by 132€ (5%). Ranking already prefers in-budget variants — this one is shown for comparison; check the value variant or raise the budget. What limits you first: CPU. Alternatives: Smart build — best all-round — 8176€, DNA 78/100, balanced · Long-term build — expandable & future-proof — 3433€, DNA 86/100, balanced · Performance build — maximum capability — 8176€, DNA 77/100, balanced.
The system as a whole — before the shopping list.
The system as a whole — before the shopping list.
diy · tower build on LGA 1700 + Intel Z790
We split your build into the performance you need, the performance you're buying, and the performance you're likely to use day-to-day. When the gap is wide, you're overbuying.
BALANCED — the build is sized close to what the workload requires.
| Performance I need | Performance I buy | Likely to use | |
|---|---|---|---|
| CPU threads | 12 | 16 | 8 |
| RAM | 80 | 128 | 64 |
| Storageoverbuy | 4 | 8 | 4 |
| GPU VRAM | 24 | 24 | 24 |
| Network | 2.5G | 1.0G | 1.0G |
What this means
An explainable future-proof score, the Homelab Risk Score, a final pre-purchase audit and what will become the limiting factor over time.
Strong future-proofing
Strong future-proofing (74/100) — this build should stay relevant for years without major surgery.
DIY build — the CPU, motherboard and PSU can each be upgraded independently without replacing the whole system.
Expansion headroom: 1 PCIe slot(s), 2 M.2, 4 SATA, 2 drive bay(s), 0 RAM slot(s) free.
Storage is 50% utilized with 2 free drive bay(s) and 4 free SATA port(s).
0 RAM slot(s) free; memory is 63% utilized.
Networking is 2500 Mbps, and a free PCIe slot can add a faster NIC later.
ATX form factor with standard, socketed components — most parts are easy to replace.
A 24GB GPU is present — AI and transcoding workloads are covered.
Moderate risk
Moderate risk (37/100) — a few items are worth fixing before you commit (see checklist).
Single point of failure
Risk: criticalAll data sits on a single drive with no redundancy — one failure means total loss.
Fix: Add at least a mirror (RAID 1/ZFS mirror) for irreplaceable data, or an additional parity drive for larger arrays.
Storage risk
Risk: lowSolid-state storage — no moving parts, low mechanical failure risk.
Fix: For an always-on system, prefer NAS/CMR-rated drives; monitor SMART and replace before the warranty ends.
Data loss risk
Risk: high1 drive(s) with no redundancy — a single SSD/controller failure can still lose data.
Fix: Add redundancy and an off-site/off-box backup for anything irreplaceable.
Power risk
Risk: lowPSU is 1000W, peak load 263W (26%).
Fix: PSU sizing leaves healthy headroom for spikes and future parts.
Network risk
Risk: lowSingle 2500 Mbps NIC — a switch/port failure takes the box fully offline, and multi-user media can saturate 2500 Mbps.
Fix: Consider a second NIC or a managed switch; for heavy media, plan for 2.5/10G before the build.
Expansion risk
Risk: low1 PCIe, 2 M.2, 4 SATA, 2 bays free.
Fix: Healthy room for future drives, NICs and accelerators.
Upgrade risk
Risk: low2024 platform — current generation with a forward-looking socket/feature set.
Fix: Buy for the workload, not the socket — upgrade paths are a bonus, not a guarantee.
Audit found 2 critical and 0 warning item(s) worth fixing before you buy.
Check the balance
CriticalTotal (2632€) exceeds your budget (2500€) by 132€ (5%). Ranking already prefers in-budget variants — this one is shown for comparison; check the value variant or raise the budget.
Action: Reconsider the config for the stated workload or budget before buying.
Category: balance
No storage redundancy
Critical1 drive(s) with no mirror or parity for the data you plan to store.
Action: Add at least a mirror for irreplaceable data before you migrate anything.
Category: storage
Add a UPS
OptionalAn always-on server holding data should survive power blips.
Action: Add an online/line-interactive UPS sized to the build's idle draw.
Category: power
Keep a backup off-box
OptionalRedundancy inside the box does not survive fire, theft or a whole-array fault.
Action: Mirror the important data to an external drive, a second box, or cloud.
Category: storage
Drive bays remain
Future2 drive bay(s) free for future capacity.
Action: Expand capacity in pairs (mirror/parity) when needed.
Category: storage
PCIe slot available
Future1 free PCIe slot(s) for a NIC, HBA or GPU later.
Action: Use it for a 10G NIC, extra HBA, or an accelerator when the need appears.
Category: expansion
RAM is maxed out is the most likely thing to date this build within 1-2y.
RAM is maxed out
Why: All RAM slots are used and the workload already sits at 63% — the next memory need means replacing kits or a new build.
What to do: Buy a single larger kit now, or plan the RAM for the full lifecycle.
Storage growing
Why: 50% of capacity in use — comfortable today, tighter over a few years.
What to do: Plan the growth curve; keep at least one bay free for the next drive.
CPU is the closest to its limit (75% of capacity in use) — it will likely force the next upgrade.
Runner-up variants the engine generated for the same scenario — tap one to see its parts.
tower build on LGA 1851 + Intel B860 · Idle 117 W · balanced
≈ €8,176
| Role | Component | Qty | Price | Buy |
|---|---|---|---|---|
| cpu | Intel Core Ultra 7 270K Plus | 1 | €474 | … |
| motherboard | Asus B860 PRIME B860M-A LGA1851 DDR5 Micro ATX | 1 | €189 | … |
| ram | Kingston FURY Renegade Pro Registered Black DDR5-6400 CL32 128GB (4x32GB) | 1 | ≈ €425 | … |
| case | Geometric Future Model 5 Fanless ATX Mid Tower White Tempered Glass Side Panel | 1 | €18 | … |
| cooling | Thermalright Le Grand Macho Air 159mm Fanless | 1 | ≈ €35 | … |
| psu | be quiet! Dark Power 13 Fully Modular ATX Power Supply - 1000 Watts ATX 3.1 - Black | 1 | €73 | … |
| storage | Rocket Q NVMe SSD | 1 | €122 | … |
| gpu | NVIDIA RTX PRO 6000 Blackwell Workstation Edition 96GB GDDR7 | 1 | ≈ €6,840 | … |
| Total: | ≈ €8,176 | |||
tower build on LGA 1851 + Intel Z890 · Idle 114 W · balanced
≈ €3,433
| Role | Component | Qty | Price | Buy |
|---|---|---|---|---|
| cpu | Intel Core Ultra 5 250K Plus | 1 | €261 | … |
| motherboard | Gigabyte Z890 AERO D LGA1851 DDR5 EATX | 1 | ≈ €139 | … |
| ram | Kingston FURY Renegade Pro Registered Black DDR5-6400 CL32 128GB (4x32GB) | 1 | ≈ €425 | … |
| case | Geometric Future Model 5 Fanless ATX Mid Tower White Tempered Glass Side Panel | 1 | €18 | … |
| cooling | Thermalright Le Grand Macho Air 159mm Fanless | 1 | ≈ €35 | … |
| psu | be quiet! Dark Power 13 Fully Modular ATX Power Supply - 1000 Watts ATX 3.1 - Black | 1 | €73 | … |
| storage | Rocket Q NVMe SSD | 1 | €122 | … |
| gpu | ZOTAC GAMING GeForce RTX 5090 SOLID 32GB GDDR7 | 1 | ≈ €2,360 | … |
| Total: | ≈ €3,433 | |||
tower build on LGA 1851 + Intel B860 · Idle 117 W · balanced
≈ €8,176
| Role | Component | Qty | Price | Buy |
|---|---|---|---|---|
| cpu | Intel Core Ultra 7 270K Plus | 1 | €474 | … |
| motherboard | Asus B860 PRIME B860M-A LGA1851 DDR5 Micro ATX | 1 | €189 | … |
| ram | Kingston FURY Renegade Pro Registered Black DDR5-6400 CL32 128GB (4x32GB) | 1 | ≈ €425 | … |
| case | Geometric Future Model 5 Fanless ATX Mid Tower White Tempered Glass Side Panel | 1 | €18 | … |
| cooling | Thermalright Le Grand Macho Air 159mm Fanless | 1 | ≈ €35 | … |
| psu | be quiet! Dark Power 13 Fully Modular ATX Power Supply - 1000 Watts ATX 3.1 - Black | 1 | €73 | … |
| storage | Rocket Q NVMe SSD | 1 | €122 | … |
| gpu | NVIDIA RTX PRO 6000 Blackwell Workstation Edition 96GB GDDR7 | 1 | ≈ €6,840 | … |
| Total: | ≈ €8,176 | |||
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