AMD Siren Halo processor to feature RDNA 5 graphics and GDDR7 memory
Insider Gotou_3rd has shared details about AMD’s upcoming flagship Siren Halo chip. It will use the same graphics die as the processor in the next Xbox.
Lineup revision and possible Medusa Halo renaming
AMD’s roadmap leaks previously mentioned a Medusa Halo chip, but its name may have changed. According to the insider, Siren Halo could replace Medusa Halo, while the Siren Point series will refresh the Medusa Point lineup, following the same pattern as the transition from Strix to Gorgon. Another leaker, Kepler_L2, previously reported that Medusa Halo had been renamed but did not reveal its new name. Gotou_3rd says no fundamentally new Halo chip is planned for release in 2027.
Dedicated GDDR7 memory and RDNA 5 graphics
Siren Halo’s main technical feature could be its approach to system and video memory. In current AMD Halo chips, the processor cores and integrated graphics share a pool of LPDDR5X memory. According to Gotou_3rd, the upcoming flagship will add dedicated GDDR7 video memory alongside LPDDR. The insider did not specify the LPDDR generation. LPDDR6 featured in an earlier leak about Medusa Halo.
This approach could increase graphics subsystem bandwidth, while performance in local AI tasks will depend on the amount of memory available to the GPU.
In September 2026, AMD engineers published a patch for the open-source AMDGPU driver in Linux. It adds GDDR7 to the list of video memory type designations.
| Chip and series | Processor cores | Graphics | Memory and bus |
|---|---|---|---|
| Strix Halo Ryzen AI Max 300 | Zen 5, up to 16 cores and 32 threads | RDNA 3.5 | LPDDR5X-8000, 256-bit |
| Gorgon Halo Ryzen AI Max PRO 400 | Zen 5, up to 16 cores and 32 threads | RDNA 3.5 | LPDDR5X-8533, 256-bit |
| Medusa Halo Expected to be Ryzen AI Max 500 | Zen 6, up to 24 cores and 48 threads | RDNA 5 | LPDDR6 |
| Siren Halo Expected to be Ryzen AI Max 500 | Zen 6 | RDNA 5 on the AT2 die | LPDDR and dedicated GDDR7 |
Connection to the next-generation Xbox console
VideoCardz experts have reported a possible connection between Siren Halo and the Magnus chip, which leaks say is being developed for Microsoft’s next gaming console. According to sources cited by the publication, both products may use the AT2 graphics die with RDNA 5 architecture.
According to preliminary information, Magnus will use a chiplet design with Zen 6 processor cores and energy-efficient Zen 6c cores. The graphics component is said to have 68 active RDNA 5 compute units, while GDDR7 memory on a 192-bit bus could reach 48 GB. VideoCardz suggests that the AT2 graphics die could also be used in high-performance mini PCs based on Siren Halo.
