D 5	D 6	D 7	D 2007	D 2009	D 2010	XE	XE2(32)	XE2(64)
Generic integer types
Integer	4	4	4	4	4	4	4	4	4
Cardinal	4	4	4	4	4	4	4	4	4
NativeInt	-	-	8	8	4	4	4	4	8
NativeUInt	-	-	8	8	4	4	4	4	8
Fundamental integer types
Shortint	1	1	1	1	1	1	1	1	1
Smallint	2	2	2	2	2	2	2	2	2
Longint	4	4	4	4	4	4	4	4	4
Int64	8	8	8	8	8	8	8	8	8
Byte	1	1	1	1	1	1	1	1	1
Word	2	2	2	2	2	2	2	2	2
Longword	4	4	4	4	4	4	4	4	4
UInt64	-	-	8	8	8	8	8	8	8
Character Types
AnsiChar	1	1	1	1	1	1	1	1	1
WideChar	2	2	2	2	2	2	2	2	2
Char	1	1	1	1	2	2	2	2	2
Boolean Types
Boolean	1	1	1	1	1	1	1	1	1
ByteBool	1	1	1	1	1	1	1	1	1
WordBool	2	2	2	2	2	2	2	2	2
LongBool	4	4	4	4	4	4	4	4	4
Bool	4	4	4	4	4	4	4	4	4
Fundamental Win32 real types
Real48	6	6	6	6	6	6	6	6	6
Single	4	4	4	4	4	4	4	4	4
Double	8	8	8	8	8	8	8	8	8
Extended	10	10	10	10	10	10	10	10	8
Extended80	-	-	-	-	-	-	-	10	10
Comp	8	8	8	8	8	8	8	8	8
Currency	8	8	8	8	8	8	8	8	8
Generic real types
Real	8	8	8	8	8	8	8	8	8
{$REALCOMPATIBILITY ON} Real	6	6	6	6	6	6	6	6	6
Other
UINT	4	4	4	4	4	4	4	4	4
DWORD	4	4	4	4	4	4	4	4	4
Pointer	4	4	4	4	4	4	4	4	8
Pchar	4	4	4	4	4	4	4	4	8
wParam	4	4	4	4	4	4	4	4	8
lParam	4	4	4	4	4	4	4	4	8
THandle	4	4	4	4	4	4	4	4	8
Tag	4	4	4	4	4	4	4	4	8
String types
AnsiString	4	4	4	4	4	4	4	4	8
AnsiString[1]	1	1	1	1	1	1	1	1	1
WideString	4	4	4	4	4	4	4	4	8
WideString[1]	2	2	2	2	2	2	2	2	2
String	4	4	4	4	4	4	4	4	8
String[1]	1	1	1	1	2	2	2	2	2
UnicodeString	-	-	-	-	4	4	4	4	8
UnicodeString[1]	-	-	-	-	2	2	2	2	2
Array and Record types
array [0..8] of byte	9	9	9	9	9	9	9	9	9
packed array [0..8] of byte	9	9	9	9	9	9	9	9	9
record a: byte; b, c: word; end;	6	6	6	6	6	6	6	6	6
packed record a: byte; b, c: word; end;	5	5	5	5	5	5	5	5	5
Enumerate
(teA, teB, teC, teD)	1	1	1	1	1	1	1	1	1
set of (teA, teB, teC, teD)	1	1	1	1	1	1	1	1	1
{$Z+}	4	4	4	4	4	4	4	4	4
{$Z+} set of	1	1	1	1	1	1	1	1	1
{$Z1}	1	1	1	1	1	1	1	1	1
{$Z1} set of	1	1	1	1	1	1	1	1	1
{$Z2}	2	2	2	2	2	2	2	2	2
{$Z2} set of	1	1	1	1	1	1	1	1	1
{$Z4}	4	4	4	4	4	4	4	4	4
{$Z4} set of	1	1	1	1	1	1	1	1	1
{$Z-}	1	1	1	1	1	1	1	1	1
{$Z-} set of	1	1	1	1	1	1	1	1	1