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AMD pivots from HBM to LPDDR5X for new Versal Gen 2 memory on package chips
18 days ago
- AMD announces Versal Premium Gen 2 Memory on Package SoCs with on-package LPDDR5X for integrated, turn-key solutions.
- The pivot from HBM to LPDDR5X is driven by HBM supply shortages due to AI boom demand, leading to Versal HBM discontinuation.
- On-package memory strategy shift addresses long-term availability issues, as HBM has shorter production cycles than DDR technologies.
Scrying the AMD GFX1250 LLVM Tea Leaves
3 days ago
- AMD's new GFX1250 accelerator, part of MI455X for machine learning, shows similarities to RDNA4 including WGP structure and WMMA support, but lacks dynamic VGPR allocation.
- GFX1250 allows up to 1024 VGPRs per wave, a major improvement over CDNA's 512 and RDNA's 256, and features a merged 448KB WGP Cache for LDS and vector L0.
- Graphics support is minimal in GFX1250, with no rasterizer, texture, or raytracing instructions, making it a pure compute accelerator.
- Tensor operations in GFX1250 combine RDNA4's programming model with CDNA4's performance, supporting various data formats and sparse WMMA, but excluding fp64.
- New features include clusters for thread block coordination, cluster-level barriers and loads, cooperative atomics, and hardware support for tanh and explicit prefetching.
- Data dependency handling is redesigned with more granular counters (e.g., ASYNCcnt, TENSORcnt) to reduce stalls, improving efficiency over GCN/CDNA.
AMD Ryzen 7 7700X3D Review: 3D V-Cache Gaming Performance for Less – HotHardware
3 days ago
- The Ryzen 7 7700X3D is a more affordable 3D V-Cache processor for gamers, sharing an 8-core design with the 7800X3D but with lower clocks and a $329 MSRP.
- It offers a cost-effective entry to AM5 platform with future compatibility for next-generation Zen 6 processors.
- The chip features 96MB total L3 cache (including 64MB 3D V-Cache), which enhances gaming performance by keeping data closer to cores.
- Compared to the 7800X3D, the 7700X3D has a 200MHz lower base clock and 500MHz lower boost clock, likely reducing performance in lightly threaded tasks but less impact in multi-threaded workloads.
- It requires a BIOS/UEFI update for motherboard compatibility, but most board manufacturers have already released updates.

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AMD pivots from HBM to LPDDR5X for new Versal Gen 2 memory on package chips

Scrying the AMD GFX1250 LLVM Tea Leaves

AMD Ryzen 7 7700X3D Review: 3D V-Cache Gaming Performance for Less – HotHardware