1、從電源來說，正軌工控機電源(yuan)和普通(tong)電源(yuan)是不相同的，它里邊(bian)選用的電阻(zu)電容和線圈等抗沖擊(ji)抗煩擾要(yao)比普通(tong)家用的高出幾級，帶(dai)載容量也(ye)大許多； 

2、從(cong)外(wai)觀上(shang)看(kan)，普通電(dian)(dian)腦(nao)多數是敞開的，表現上(shang)有較多散熱孔，只需一個電(dian)(dian)源電(dian)(dian)扇向機(ji)箱(xiang)外(wai)吹風以來散熱，而(er)工(gong)控機(ji)機(ji)箱(xiang)（以標準19英(ying)寸為例）則(ze)是全封鎖的，重量(liang)上(shang)要比普通電(dian)(dian)腦(nao)機(ji)箱(xiang)重的多，由于它用的板材很厚，厚所以強健，里邊不只僅有一個電(dian)(dian)源用的電(dian)(dian)扇，還有一個用來堅持機(ji)箱(xiang)內正壓(ya)強的風量(liang)更更大的內吹電(dian)(dian)扇，這樣外(wai)型構造(zao)能夠防塵，一同還可屏蔽電(dian)(dian)磁等(deng)對其內部(bu)的煩擾； 

3、從內部(bu)結構上(shang)看也有(you)(you)顯著不(bu)同，普通電(dian)腦普通只需(xu)一個(ge)主(zhu)(zhu)板(ban)(ban)(ban)(ban)(ban)(ban)，上(shang)面有(you)(you)CPU插(cha)(cha)槽(cao)(cao)(cao)(cao)，內存槽(cao)(cao)(cao)(cao)等標準配備(bei)部(bu)件，其它(ta)(ta)的(de)如獨立顯卡等則插(cha)(cha)在(zai)主(zhu)(zhu)板(ban)(ban)(ban)(ban)(ban)(ban)上(shang)的(de)擴展(zhan)槽(cao)(cao)(cao)(cao)上(shang)，如今多(duo)(duo)為PCI插(cha)(cha)槽(cao)(cao)(cao)(cao)，工(gong)控(kong)機(ji)則不(bu)同，它(ta)(ta)有(you)(you)一個(ge)較大的(de)母(mu)(mu)板(ban)(ban)(ban)(ban)(ban)(ban)，也叫無源底(di)板(ban)(ban)(ban)(ban)(ban)(ban)，這塊(kuai)板(ban)(ban)(ban)(ban)(ban)(ban)子上(shang)并(bing)沒有(you)(you)幾集成(cheng)電(dian)路，只需(xu)較多(duo)(duo)的(de)擴展(zhan)槽(cao)(cao)(cao)(cao)，帶有(you)(you)CPU的(de)主(zhu)(zhu)板(ban)(ban)(ban)(ban)(ban)(ban)要插(cha)(cha)在(zai)這個(ge)母(mu)(mu)板(ban)(ban)(ban)(ban)(ban)(ban)上(shang)特其他插(cha)(cha)槽(cao)(cao)(cao)(cao)里，其它(ta)(ta)的(de)擴展(zhan)板(ban)(ban)(ban)(ban)(ban)(ban)也要插(cha)(cha)在(zai)母(mu)(mu)板(ban)(ban)(ban)(ban)(ban)(ban)上(shang)，而不(bu)是(shi)主(zhu)(zhu)板(ban)(ban)(ban)(ban)(ban)(ban)上(shang)，這樣的(de)優點是(shi)有(you)(you)了母(mu)(mu)板(ban)(ban)(ban)(ban)(ban)(ban)能(neng)夠(gou)更(geng)(geng)好(hao)屏(ping)幕掉外界的(de)煩擾，由于工(gong)控(kong)機(ji)工(gong)作(zuo)的(de)場所有(you)(you)時(shi)比(bi)擬(ni)惡劣(lie)，煩擾比(bi)擬(ni)多(duo)(duo)，這樣就能(neng)夠(gou)使主(zhu)(zhu)機(ji)更(geng)(geng)可(ke)靠的(de)工(gong)作(zuo)，一同大的(de)母(mu)(mu)板(ban)(ban)(ban)(ban)(ban)(ban)更(geng)(geng)也更(geng)(geng)簡(jian)單擴展(zhan)其他插(cha)(cha)件，這樣規劃人員在(zai)開(kai)發體系時(shi)能(neng)夠(gou)有(you)(you)更(geng)(geng)多(duo)(duo)的(de)選擇，而不(bu)用思索(suo)能(neng)否有(you)(you)空間放(fang)下(xia)。