PC Build to Run Gemma 4 26B-A4B Locally (Q8_0)
Written by Jakub Rusinowski · Last updated March 31, 2026
A complete parts list — GPU, motherboard, RAM and PSU — worked backward from Gemma 4 26B-A4B's VRAM requirement at Q8_0. Prices are 2026 street estimates and vary.
Requirements
| VRAM required | ~28 GB at Q8_0 |
| System RAM | 32 GB |
| Estimated speed | ~93 tok/s |
| Complete build (est.) | $2,149 |
Weights plus framework overhead only — this model publishes no architecture we can read, so no KV cache is included. A real session needs more; the figure is a floor, not a target.
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GPU: AMD Radeon AI PRO R9700
AMD Radeon AI PRO R9700's 32 GB covers Gemma 4 26B-A4B at Q8_0 (~28 GB needed), with headroom.
Motherboard: ASUS TUF Gaming B650-PLUS WIFI
B650 (AM5) — pairs with the AMD Ryzen 7 7700; DDR5, dual PCIe 4.0 x16 (x8/x8) for multi-GPU, 4 DIMM slots to 256 GB.
RAM: Corsair Vengeance 32GB (2x16GB) DDR5-6000 C30 (AMD EXPO)
32 GB DDR5-6000 (2x16GB) meets Gemma 4 26B-A4B's 32 GB recommended system RAM.
PSU: Corsair RM650e (ATX 3.1)
650 W 80+ Gold covers AMD Radeon AI PRO R9700 (300 W) + CPU 65 W with 30% headroom (~475 W required).
Swap Alternatives
- GPU: NVIDIA RTX A6000 — NVIDIA RTX A6000's 48 GB covers Gemma 4 26B-A4B at Q8_0 (~28 GB needed), with headroom.
- GPU: NVIDIA RTX 6000 Ada Generation — NVIDIA RTX 6000 Ada Generation's 48 GB covers Gemma 4 26B-A4B at Q8_0 (~28 GB needed), with headroom.
- RAM: Corsair Vengeance 64GB (2x32GB) DDR5-6000 C30 (AMD EXPO) — More headroom: 64 GB DDR5-6000.
- PSU: Corsair RM850e (ATX 3.1) — More headroom / future dual-GPU: 850 W 80+ Gold.
FAQ
What GPU do I need to run Gemma 4 26B-A4B at Q8_0?
AMD Radeon AI PRO R9700's 32 GB covers Gemma 4 26B-A4B at Q8_0 (~28 GB needed), with headroom.
How much VRAM does Gemma 4 26B-A4B need at Q8_0?
About 28 GB of VRAM plus 32 GB of system RAM.
What power supply does a AMD Radeon AI PRO R9700 build need?
650 W 80+ Gold covers AMD Radeon AI PRO R9700 (300 W) + CPU 65 W with 30% headroom (~475 W required).
How much does a Gemma 4 26B-A4B PC cost?
About $2,149 for a complete build (GPU, motherboard, RAM, PSU, CPU, case, SSD), at 2026 street-price estimates.
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