Minisforum BD790i + Ryzen 9 7945HX

Identifier: AMD Ryzen 9 7945HX on Minisforum BD790i (Shenzhen Meigao DRFXI board) Form factor: mini-ITX desktop (“Uranus Series” chassis) Status: active

A 16-core mobile-class Zen 4 CPU soldered onto a mini-ITX board. Pairs with a full-size desktop GPU via PCIe 5.0 x16 — punches well above its size class.

Build & Cost

Component	Spec	Cost
Board + CPU	Minisforum BD790i (Ryzen 9 7945HX, 16c/32t)	$479.99 (2024)
RAM	Crucial 96 GB (2×48) DDR5-5600 SODIMM (CT2K48G56C46S5) — shared with N5 Pro	$224.99 (2024)
GPU (config A)	NVIDIA RTX 4070 Super 12 GB Founders Edition	$653.24 (2024)
GPU (config B)	NVIDIA RTX 3090 24 GB — same physical card as the Lenovo P8 3090	shared, $1,132.45 (2025)
Total invested (Config A)		$1,358.22
$/ACI (A)		$2.21

Shared parts: the Crucial 96 GB SODIMM kit also appears in the Minisforum N5 Pro (single physical kit, swapped). The RTX 3090 used in Config B is the same physical card that lives on the Lenovo P8 — confirmed by the user.

Prices reflect what was paid at time of purchase, not current market.

Geekbench AI Runs

Backend	Component	Single	Half	Quant	Result
ONNX / DirectML	RTX 4070 Super	27,830	42,004	21,032	81278
ONNX / DirectML	RTX 3090	25,104	37,226	15,153	204967
ONNX / CPU	Ryzen 9 7945HX	4,082	1,724	4,938	81273
OpenVINO / CPU	Ryzen 9 7945HX	8,157	8,260	18,444	81280

AI Capability

Config A: RTX 4070 Super

• Best Single / Half / Quant: 27,830 / 42,004 / 21,032
• ACI: 614.5 — Tier A (top of A, near S)

Config B: RTX 3090 (24 GB)

• Best Single / Half / Quant: 25,104 / 37,226 / 18,444 (quant from CPU OpenVINO)
• ACI: 548.2 — Tier A
• The lower compute is offset by double the VRAM — the 3090 can run 31B Q5/Q8 locally; the 4070S cannot. See Gemma 4 VRAM Requirements.

The 7945HX’s OpenVINO quant score (18,444) is the highest CPU quant of any rig in this collection — useful when GPU memory is full.

See Also

• Benchmark Methodology
• ASUS B550-I + 5800X — same GPU
• MSI Codex R — also tested with RTX 3090