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Amazon launches EC2 X8g instances featuring Graviton4 processors and DDR5 support
Thursday, December 25, 2025 at 12:47 PM
Amazon has launched the EC2 X8g instances powered by its custom-designed Graviton4 processors, which utilize DDR5 memory to support high-performance computing workloads in hyperscale data centers.
Context
Amazon has launched its new EC2 X8g instances, powered by the latest ARM-based Graviton4 processors. Designed for memory-intensive workloads like in-memory databases, these instances offer up to 3 TiB of memory. This shift highlights the dominance of custom silicon in hyperscale data centers, with the X8g delivering a 60% increase in memory bandwidth compared to previous generations through the integration of high-speed DDR5 technology.
This rollout reinforces Amazon’s strategy to enhance price-performance while optimizing energy efficiency. The Graviton4 chip provides up to 30% better compute performance and 75% more memory bandwidth than its predecessor, the Graviton3. By scaling proprietary hardware, Amazon reduces its dependence on traditional chipmakers and provides customers with a 40% better price-performance ratio, signaling a major shift in the semiconductor supply chain toward vertically integrated cloud providers.
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