Trending Now - Apple's M5 Pro and M5 Max Use Advanced Stacked Die Technology

WHO:

Apple, Inc.

Anand Shimpi, employee in Apple’s Hardware Technologies department, former head of Anandtech

Heise online, German publication

WHAT:

Apple unveiled the M5 Pro and M5 Max chipsets.

The M5 Pro and M5 Max utilize a new 'Fusion Architecture' and feature vertically stacked dies.

The M5 Pro and M5 Max represent a shift from monolithic architecture to a chiplet design.

The M5 Max achieved lower temperatures than the M4 Max in a previous multi-core stress test.

The stacked die design allows for a high-bandwidth, low-latency interface that is power-efficient.

WHERE:

Information provided by Anand Shimpi was shared in an interview with Heise online.

WHEN:

The M5 Pro and M5 Max were unveiled in 2026.

WHY:

The new architecture was developed based on lessons learned from the M2 Ultra’s and M3 Ultra’s UltraFusion architecture.

HOW:

The M5 Pro and M5 Max utilize a design where functions are split across two different dies, incorporating separate IP blocks for each.

(UPDATED March 23, 2026 04:02 UTC)

Apple has unveiled its latest chipsets, the M5 Pro and M5 Max, which feature a new 'Fusion Architecture' and a chiplet design that shifts away from traditional monolithic architecture. Anand Shimpi, an employee in Apple’s Hardware Technologies department, shared insights during an interview with the German publication Heise online, highlighting that the M5 Max achieved lower temperatures than its predecessor, the M4 Max, during multi-core stress tests. This innovative design incorporates vertically stacked dies, allowing for a high-bandwidth, low-latency interface that is also power-efficient, drawing from lessons learned from previous models like the M2 Ultra and M3 Ultra.