作者: t9097 時間: 2020-2-22 21:32 標題: 有冇AM4 ITX底板可以直插兩張display card
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作者: kofz 時間: 2020-2-23 08:31
ITX板一定得一條 PCIE
除非你將 M2(PCIE MODE) 轉成 PCIE
理論上可以
最大問題就係個機箱點固定兩張顯卡
我覺得都係用返 MATX板比較實際
via HKEPC IR Extreme 4.2.3 - Android(4.2.0)
作者: crackong 時間: 2020-2-23 09:04
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作者: kcthomlau 時間: 2020-2-23 09:51
除左板難搵之外,箱都比較少
作者: billykhw 時間: 2020-2-23 11:13
ITX規格本身就係1條PCI-E
你加adaptor就唔叫直插啦
作者: anonymoushk 時間: 2020-2-23 11:25
回覆 3# crackong
some asrock itx have a option to switch pcie x16 to 8+8
but not sure it work or not *maybe fake bios option
作者: crackong 時間: 2020-2-23 11:33
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作者: diy-apprentice 時間: 2020-2-23 11:38
就算真係俾你搵到,都只係在呃自己。兩張顯示卡share一條槽的頻寬,快極有限!

作者: anonymoushk 時間: 2020-2-23 13:31
回覆 8# diy-apprentice
some calculation does not need tons of bandwidth
e.g. trashcoin mining
作者: doggiestyle 時間: 2020-2-23 13:38
以前出 外置 DISPLAY 就係話做咩野運算
宜家出成點就唔知
作者: diy-apprentice 時間: 2020-2-23 13:46
回覆 diy-apprentice
some calculation does not need tons of bandwidth
e.g. trashcoin mining ...
anonymoushk 發表於 2020-2-23 13:31
何必庸人自擾,倒不如搵埋現成的M-ATX板,反正尺寸也不是大很多,即刻解決難題,仲有較多選擇。
作者: ten123456789 時間: 2020-2-23 13:47
回覆 8# diy-apprentice
2080ti插落x8道都係差1~4%性能
樓主個情況其實無咩性能損失
作者: diy-apprentice 時間: 2020-2-23 13:51
最重要其實係冷門野根本不值得去玩。就算俾你買到,除非自己一次過買多幾件,否則兩三年後壞左,到時想再找零件替換,又係在自找麻煩!
作者: anonymoushk 時間: 2020-2-23 13:52
回覆 11# diy-apprentice
you still got 8+8 problem on most MATX board , which may cause performance drop as you mention before (honestly i dont care about 8+8)
作者: diy-apprentice 時間: 2020-2-23 13:54
回覆 diy-apprentice
you still got 8+8 problem on most MATX board , which may cause perform ...
anonymoushk 發表於 2020-2-23 13:52
我就唔會刻意去找這些冷門野啦,假如閣下需要就自便啦。
作者: anonymoushk 時間: 2020-2-23 17:12
回覆 15# diy-apprentice
one of your argument for not choosing 16 to 8+8 adapter on itx
because it will get slow down by sharing pcie bandwidth
"就算真係俾你搵到,都只係在呃自己。兩張顯示卡share一條槽的頻寬,快極有限!"
and you suggested a MATX board , which doesn't solve the problem of "sharing bandwidth" except get a X299 / X99 or some MATX with more pcie lanes configuration
1. sharing bandwidth may not hurt performance , it depends on usage
2. you argue about sharing bandwidth will slowdown the calculation , and you suggested a matx board as solution which doesnt solve the problem of sharing bandwidth
dude , a matx board with more than one pcie slot doesn't solve the bandwidth issue , it just able to plug more than one card without adding a adapter , the "bandwidth problem" which you very concern about still there
作者: anonymoushk 時間: 2020-2-23 17:17
回覆 1# t9097
if you looking for a small rig with two GPU in slim size , try search or custom made something like this
https://www.youtube.com/watch?v=0n0gfL4gvC8
it is small and dont require extra 16 to 8+8 pcie adapter
just two pcie extension cable which was common now
get common matx for 8+8 configuration
or get a x99/x299 board for more pcie lanes configuration
作者: keoyte 時間: 2020-2-23 19:02
1房1廳單位想放兩張雙人床

作者: 戀人未滿 時間: 2020-2-23 19:19
放左2張卡之後, 部機會細得去邊?
用ITX板既意義去左邊
作者: Mr.scy 時間: 2020-2-23 19:39
突破盲腸
直接換張MATX個COST分分鐘仲細過係塊ITX搞嚟搞去,同埋長行兩張卡個電費又會比行一張效能同級單卡貴.......
作者: 戀人未滿 時間: 2020-2-23 19:50
回覆 20# Mr.scy
根本樓主搞錯重點, 板細=/=機細
作者: t9097 時間: 2020-2-24 00:49
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作者: hkjake 時間: 2020-2-26 12:33
for your infomation
itx机箱都可以玩gtx1070 sli
作者: astrial 時間: 2020-2-27 13:19
樓主需要嘅叫PCI-E Bifurcation
美國有機箱廠連埋個adapter一齊賣
https://www.sliger.com/products/cases/sm580/
或者考慮Asrock塊X570 Phantom Gaming-ITX/TB3
TB3又可以插外置display card
作者: t9097 時間: 2020-2-27 13:56
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作者: kofz 時間: 2020-2-27 15:05
一般 itx機箱係唔會內置哩個功能
除非你自己 diy硬改
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作者: kofz 時間: 2020-2-27 15:07
樓主用嚟 ai運算
類似挖擴
應該影響輕微
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作者: kofz 時間: 2020-2-27 15:11
咁冷門
冇都好正常
或者去哩個網睇睇
https://egpu.io/best-egpu-buyers-guide/#m2-interface
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作者: 戀人未滿 時間: 2020-2-27 16:02
不如買個4slot箱啦, 再加塊matx,
雙卡都要買個4slot箱架啦
作者: eric6a01 時間: 2020-3-3 14:45
好難wor,itx只有一個顯卡位
如果好似3#咁一開二,效率打大折扣吧?

