different between qword vs dword

English

qword (plural qwords)

(computing) A quadword.
- 1991, William B. Giles, Assembly language programming for the Intel 80XXX family
  On line 7, "X" and "Y" are defined to be qwords. Therefore, each is eight bytes long — the size of a double in C.

From double word.

dword (plural dwords)

(computing) A numerical value of twice the magnitude of a word, thus typically 32 bits.
- 1999, Don Anderson, Tom Shanley, PCI system architecture
  A bridge may combine posted memory writes to successive dwords into a single burst memory write transaction using linear addressing.

Send