Advanced Micro Devices, the world’s second largest maker of x86 central processing units, has apparently grabbed over a quarter of the globe’s microprocessors for servers, numbers from a research firm say.

AMD Opteron processors have grabbed 25.9% of server market, up from 22.1% in previous quarter, claim numbers reportedly released by Mercury Research. Shipments of the Opteron processors for 2-way servers grew 45% quarter-over-quarter, while AMD’s server microprocessor market share in terms of revenues was 33% of the total server market revenue.

Earlier it was reported that in the second quarter of 2006 Advanced Micro Devices shipped 22% of microprocessors for desktops, notebooks and servers, while Intel Corp. commanded 73% of CPU shipments, according to data by Mercury Research published by International Business Times. 22% is the highest market share AMD has ever achieved, previous all-time-high stood at 21.8% in Q2 2001. If the published figures are correct, then companies like Via Technologies and Transmeta Corp. supplied no less than 6% of the world’s x86 microprocessors during the Q2 2006, a significant number for both.

AMD’s revenue share also grew to 18% at the expense of Intel, whose revenue share stood at 81%, meaning that the remaining x86 chip suppliers shipped 6% of all world’s x86 architecture CPUs for 1% of revenue.

AMD was not able to make any progress in the notebook universe, however. Intel’s share increased from 86.3% in Q1 to 86.7% in Q2. AMD unit share declined to 13.3% from 13.6% sequentially.