These be the names of the mighty men whom David had: The Tachmonite that sat in the seat,
chief among the captains; the same was Adino the Eznite: he lift up his spear against eight hundred, whom he slew at one time. (KJV)
These are the names of David's mighty men: Josheb-Basshebeth, a Tahkemonite, was chief of the Three;
he raised his spear against eight hundred men, whom he killed in one encounter. (NIV)
These are the names of the mighty men whom David had: Josheb-basshe'beth a Tah-che'monite;
he was chief of the three; he wielded his spear against eight hundred whom he slew at one time. (RSV)
And this is the number of the mighty men whom David had; Jashobeam, an Hachmonite,
the chief of the captains: he lifted up his spear against three hundred slain by him at one time. (KJV)
this is the list of David's mighty men: Jashobeam, a Hacmonite, was chief of the officers;
he raised his spear against three hundred men, whom he killed in one encounter. (NIV)
This is an account of David's mighty men: Jasho'be-am, a Hach'monite, was chief of the three;
he wielded his spear against three hundred whom he slew at one time. (RSV)
Note from the Oxford Annotated Bible for 2 Samuel 23:8-11: Josheb-basshebeth a Tachemonite is an error of a copyist;
1 Chr 11.11 has Jashobeam a Hachmonite. It has been proposed that the man's original name was Ishbaal (see 2.8 n. and 11.14-25 n.).
So according to the Oxford Annotated Bible, Jashobeam and Josheb-basshe'beth (and Ishbaal) are different names for the same person.
The Biblically Correct answer: 800
Since First Chronicles was written several
centuries after Second Samuel and the Chronicler used 2 Samuel as a source, any conflict between them
is easily resolved. The Biblically Correct answer will come from 2 Samuel.