新入手 MinisForum GK41

fakeman

自組嘅NAS 因為無 iGPU 所以無 transcoding hardware acceleration, 於是就諗下加部機仔去做 transcoding, 前面有個 post 骰仔機有考慮但好似話 Linux 下 CPU fan uncontrollable, 睇睇下就揀 MinisForum GK41.

Spec:
Intel J4125 (Gemini Lake Refresh, 4-core), 呢一代 CPU HEVC decode + encode 都有 hardware acceleration, 兼且 low power consumption.
Onboard 4GB x 2 DDR4 (no changeable)
M2 2280 (128 or 256GB) SSD, 我自己要 128GB 夠, 佢仲有個 SATA port 可插 7mm 2.5" disk
1 x micro SD slot (聲稱  support max 128GB 都唔知有咩用 )
Dual Band WiFi + BT 4.2 (其實係 Atheros QCA9377, 1x1 你都唔好預佢好得去邊)
2 x Realtek Gigabit LAN
4 x USB 3.0 port (都係 under 1 個 root hub....所以唔好諗 4 x USB disk 做 NAS....)
Bundle Windows 10 x64 Pro (竟然唔係 OEM, 係 full retail license)

我將個 Windows virtualize, 直接咁整上去 Proxmox 入面 (仲要唔使 re-activate), 分配 2 core + 4GB ram 都唔叫好差 (反正只係用來做基本嘢), 遲下就整多個 Jellyfin docker 先, 再研究下點整 dual link to NAS or USB 2.5Gbe LAN 去用 remote storage 儲個 VM

gary3k

有d興趣，想問吓個SATA係唔係只可以放到7mm HDD，9.5mm唔得？

fakeman

有d興趣，想問吓個SATA係唔係只可以放到7mm HDD，9.5mm唔得？
gary3k 發表於 2021-5-5 21:28

    Yes....會頂到 bios 電

KinChungE

J4125本身CPU已經弱, 再用USB Lan增加CPU負荷

fakeman

J4125本身CPU已經弱, 再用USB Lan增加CPU負荷
KinChungE 發表於 2021-5-6 12:44

    USB LAN 咪又係果粒 ethernet chip, 除咗食 USB bandwidth 外 (部機得 1 個 root hub share bandwidth 係重點) CPU resource 影響已經好細.

不過講開, Gemini Lake Refresh 嘅 J4125 無我想像中咁慢, 唯一最食 resources 嘅 video transcoding 都有 Quick Sync cover.....本身有其他 i3/i5 mini PC 價錢都平但係舊嘅 Haswell/Broadwell i3/i5 display support 嘅 hardware acceleration media format 仲少.....

KinChungE

USB LAN 咪又係果粒 ethernet chip, 除咗食 USB bandwidth 外 (部機得 1 個 root hub share bandwid ...
fakeman 發表於 2021-5-7 09:32

PCI-e Lan同USB Lan係兩回事喎
有DMA vs 冇DMA既分別

fakeman

PCI-e Lan同USB Lan係兩回事喎
有DMA vs 冇DMA既分別
KinChungE 發表於 2021-5-7 09:36

    USB 都可以用 DMA 嘅 (Linux kernel 2.5+ 已有), 當然我認同嘅係 same chipset 下 USB 會差過 PCI-e based (唔計 bandwidth 啦), USB 多一層 overhead 係不爭嘅事實....但未至於會食好多 CPU resource 嘅. 部機無得加 PCI-e card 都無計.....另外有諗過 Intel NUC 行 thunderbolt ethernet....但貴好多 -_-

KinChungE

USB 都可以用 DMA 嘅 (Linux kernel 2.5+ 已有), 當然我認同嘅係 same chipset 下 USB 會差過 PCI-e ...
fakeman 發表於 2021-5-7 10:06

有冇比較過, 如果蟹1G USB vs 蟹2.5G USB, 有冇進步過?

fakeman

有冇比較過, 如果蟹1G USB vs 蟹2.5G USB, 有冇進步過?
KinChungE 發表於 2021-5-7 10:07

    未買, 難比較, desktop 2.5Gbe 有人就話 Dragon based PCI-e series 改進好大 (話可以打機喎), 唔知 USB 嘅 8156 有無受惠. 我而家係見到有 AQC-107 based 嘅 2.5/5Gbe USB LAN.....Aquantia 感覺好過 Realtek 好多 雖然有人實測話 USB 5Gbe LAN 一般 capped around 3.5Gbps (有 USB overhead 可以理解), 但係 3.5Gbps 駁 storage 計已經等同我 local 行緊隻 SATA 2 SSD....可以接受嘅速度

KinChungE

未買, 難比較, desktop 2.5Gbe 有人就話 Dragon based PCI-e series 改進好大 (話可以打機喎), 唔知 ...
fakeman 發表於 2021-5-7 10:34

我而家PC Router用蟹Giga, 扯得勁會成個interface死左
唔知用USB 2.5G會唔會比而家好