The most common and most likely answer to this crossword clue is the 4 letter word BYTE
I've seen this crossword clue in Independent
B
Y
T
E
More clues leading to the result BYTE
- Times item in centre: several bits
- Time invested in extra bits
- Champ picked up some bits
- Perhaps 8 25s?
- Storage unit in tomb many don’t use finally
- Quantity of information barely there
- State shark attack? It’s part of the memory
- Standby terraced housing bits combined
- Very little info given by the heartless
- Usually 8 bits in safety-belt mounting
Buddy explains!

The straight part
We know that "Quantity of information" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case quantity of information = byte.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BYTE mean?
BYTE noun- A short sequence of bits (binary digits) that can be operated on as a unit by a computer; the smallest usable machine word.
- (most commonly) A unit of computing storage equal to eight bits, which can represent any of 256 distinct values.