Código PHP:
<table cols="3" width="100%"><tr>
<?php
$result = mysql_query ("SELECT * FROM Nueva ORDER BY ID");
while($row = mysql_fetch_array($result)){
echo"<td class=caract width=33%>$row[CPU]
<br /> $row[RAM]</td>";
while($row[ID] % 3){
echo"</tr><tr>";
}
}
?>