What just happened? Team Red is firing on all cylinders with their latest “Strix Point” mobile processors launching this summer, representing a generational upgrade over last year’s Phoenix chips. New images reveal a significant change in die size, increasing from 9.06mm x 15.01mm on Phoenix to 12.06mm x 18.71mm, allowing for substantial under-the-hood enhancements.
At the core is a hybrid x86 CPU design with two clusters: one including four robust Zen 5 cores and 16MB of L3 cache, while the other consists of eight efficiency-focused Zen 5c cores, each with 8MB L3. The clusters communicate via AMD’s reliable Infinity Fabric interconnect.
However, the real highlight is the integrated RDNA 3.5 GPU. This unit features 16 compute units translating to 1,024 stream processors, plus four render backends and 2MB of L2 cache to feed that beast with data. AMD had previously shared some official benchmarks for the architecture, demonstrating that it’s more than a simple mid-cycle refresh over last year’s RDNA 3.
render shot pic.twitter.com/mqPg7YngOi
– í¬ìÂÂí¬ì (@harukaze5719) July 29, 2024
Multimedia is also a focus area, with dedicated media and display engines accelerating video encoding/decoding and display output. The media engine handles the latest codecs like AV1, H.264, and H.265. The display engine compresses and encodes the GPU’s rendered frames for seamless output over DisplayPort, HDMI, and embedded display connections. These hardware blocks optimize Strix Point for smooth video playback and content creation.
Then there’s AMD’s second-gen AI engine, which is based on the XDNA 2 architecture and features 32 tiles with a throughput of 50 TOPS. This is actually the third main logic component of the chip and is visibly larger than its Phoenix counterpart. This NPU is designed to keep up with advanced AI workloads like Microsoft’s Copilot+ assistant.
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Funny how the RDNA WGP scalar units keep getting moved around, now back to RDNA1 layout.
The SRAM around the IMC is also present on PHX2 (and presumably PHX1), but seemingly not the desktop IOD or older CPUs/APUs.
Overall… neat, without any major surprises. https://t.co/cf6MZVMgT2 pic.twitter.com/MfPqQRDGcY
– Nemez (@GPUsAreMagic) July 29, 2024
Memory support gets an upgrade too with a dual-channel DDR5/LPDDR5 controller running at high speeds, along with an integrated SRAM cache similar to previous AMD designs. The PCIe root complex has slimmed down to 16 lanes from 20 on Phoenix.
Under the hood, AMD has transitioned to TSMC’s N4P process tech – an enhanced version of N4 used in the previous iteration. This unlocks higher clocks and better power efficiency.
All told, Strix Point is shaping up to be a massive upgrade. The iGPU grunt especially should allow for decent 1080p gaming without a discrete GPU.
