unbuffered
/ˌʌnbəˈfɛrdəd/Definitions
1. adjective
Not having a buffer, especially a buffer of gas or liquid; not being able to store data temporarily before it is transferred to a storage medium.
“The unbuffered data transfer resulted in a slower-than-expected processing speed.”
2. noun
A data transfer that does not involve a buffer, especially in computing.
“The unbuffered transfer of data is typically used for low-latency applications.”