Posting weakly ordered transactions

An apparatus to post a weakly ordered transaction comprising:

• a core area, wherein the core area comprises a plurality of processing cores including a first processing core and a set of processing cores, a plurality of per core caches including a first per core cache and a set of per core caches, and a plurality of line-fill buffers including a first line-fill buffer and a set of line-fill buffers, and
• an uncore area coupled to the core area, wherein the uncore area comprises an extended buffer space,
• wherein the first processing core is to offload the first weakly ordered transaction, stored in the first line-fill buffer, to the extended buffer space after receiving a request for data from the uncore area,
• wherein the request for data is generated before the first weakly ordered transaction is posted to a memory, and
• wherein the first processing core is to de-allocate the first line-fill buffer after the first weakly ordered transaction is offloaded to the extended buffer space.