1、從電源來說，正軌工控機電源和普通(tong)電源是不相同的，它里邊(bian)選(xuan)用(yong)的電阻(zu)電容(rong)和線圈等抗沖(chong)擊抗煩擾要比(bi)普通(tong)家用(yong)的高出幾級，帶載容(rong)量(liang)也大許多(duo)； 

2、從外觀上(shang)看，普通(tong)電(dian)(dian)腦多數是敞開的(de)(de)，表現(xian)上(shang)有較多散熱(re)孔，只(zhi)需一個電(dian)(dian)源電(dian)(dian)扇(shan)向機(ji)箱(xiang)外吹(chui)風以(yi)來散熱(re)，而工控機(ji)機(ji)箱(xiang)（以(yi)標準19英寸(cun)為例(li)）則是全封鎖的(de)(de)，重量(liang)(liang)上(shang)要(yao)比(bi)普通(tong)電(dian)(dian)腦機(ji)箱(xiang)重的(de)(de)多，由于(yu)它(ta)用(yong)的(de)(de)板材很厚，厚所(suo)以(yi)強(qiang)健，里邊不只(zhi)僅(jin)有一個電(dian)(dian)源用(yong)的(de)(de)電(dian)(dian)扇(shan)，還有一個用(yong)來堅持(chi)機(ji)箱(xiang)內(nei)正壓(ya)強(qiang)的(de)(de)風量(liang)(liang)更更大(da)的(de)(de)內(nei)吹(chui)電(dian)(dian)扇(shan)，這樣(yang)外型構造能夠(gou)防塵，一同還可屏蔽電(dian)(dian)磁(ci)等對(dui)其內(nei)部的(de)(de)煩擾； 

3、從(cong)內部(bu)結構上(shang)看也(ye)有(you)顯著(zhu)不(bu)同(tong)，普(pu)通電腦(nao)普(pu)通只(zhi)需一(yi)個主(zhu)(zhu)板(ban)(ban)(ban)(ban)，上(shang)面有(you)CPU插槽(cao)(cao)，內存槽(cao)(cao)等(deng)(deng)標(biao)準配備部(bu)件，其(qi)它的如獨立(li)顯卡(ka)等(deng)(deng)則插在(zai)主(zhu)(zhu)板(ban)(ban)(ban)(ban)上(shang)的擴展槽(cao)(cao)上(shang)，如今多(duo)為(wei)PCI插槽(cao)(cao)，工(gong)控(kong)機則不(bu)同(tong)，它有(you)一(yi)個較大的母(mu)(mu)板(ban)(ban)(ban)(ban)，也(ye)叫無(wu)源底(di)板(ban)(ban)(ban)(ban)，這(zhe)(zhe)塊板(ban)(ban)(ban)(ban)子上(shang)并沒(mei)有(you)幾集成電路(lu)，只(zhi)需較多(duo)的擴展槽(cao)(cao)，帶有(you)CPU的主(zhu)(zhu)板(ban)(ban)(ban)(ban)要插在(zai)這(zhe)(zhe)個母(mu)(mu)板(ban)(ban)(ban)(ban)上(shang)特其(qi)他(ta)插槽(cao)(cao)里，其(qi)它的擴展板(ban)(ban)(ban)(ban)也(ye)要插在(zai)母(mu)(mu)板(ban)(ban)(ban)(ban)上(shang)，而不(bu)是(shi)主(zhu)(zhu)板(ban)(ban)(ban)(ban)上(shang)，這(zhe)(zhe)樣的優點是(shi)有(you)了母(mu)(mu)板(ban)(ban)(ban)(ban)能夠更好屏幕掉外(wai)界(jie)的煩擾(rao)，由于工(gong)控(kong)機工(gong)作的場所有(you)時比擬惡劣，煩擾(rao)比擬多(duo)，這(zhe)(zhe)樣就能夠使主(zhu)(zhu)機更可靠的工(gong)作，一(yi)同(tong)大的母(mu)(mu)板(ban)(ban)(ban)(ban)更也(ye)更簡單(dan)擴展其(qi)他(ta)插件，這(zhe)(zhe)樣規劃人員(yuan)在(zai)開發(fa)體系時能夠有(you)更多(duo)的選擇，而不(bu)用思索能否有(you)空間放(fang)下。