Subject: Graphics Cards | March 22, 2019 - 04:32 PM | Sebastian Peak
Tagged: processor, Intel, integrated graphics, iGPU, hardware, graphics, gpu, Gen11
Intel has published a whitepaper on their new Gen11 processor graphics, providing details about the underlying architecture. The upcoming Sunny Cove processors and Gen11 graphics were unveiled back in December at Intel's Architecture Day, where Intel had stated that Gen11 was "expected to double the computing performance-per-clock compared to Intel Gen9 graphics", which would obviously be a massive improvement over their current offerings. Intel promises up 1 TFLOP performance from Gen11, with its 64 EUs (execution units) and other improvements providing up to a 2.67x increase over Gen9 - though Intel does clarity that "there may be different configurations" so we will very likely see the usual segmentation.
"The architecture implements multiple unique clock domains, which have been partitioned as a per-CPU core clock domain, a processor graphics clock domain, and a ring interconnect clock domain. The SoC architecture is designed to be extensible for a range of products and enable efficient wire routing between components within the SoC.
Gen11 graphics will be based on Intel’s 10nm process, with architectural refinements that promise significant performance-per-watt improvements, according to Intel. Intel also states that memory bandwidth has been addressed to meet the demands of the increased potency of the GPU, with improvements to compression, larger L3 cache size, and increased peak memory bandwidth. All major graphics APIs are supported including DirectX, OpenGL, Vulkan, OpenCL, and Metal - the last of which makes sense as these will very likely be powering the next generation of Apple's MacBook line.
Intel states that beyond the increases in compute and memory bandwidth, Gen11 will introduce "key new features that enable higher performance by reducing the amount of redundant work", and list Coarse pixel shading (CPS) and Position Only Shading Tile Based Rendering (PTBR) among them. Many more details are provided in the document, available at the source link (warning, PDF).
Subject: Processors | December 12, 2018 - 09:00 AM | Sebastian Peak
Tagged: xeon, Sunny Cove, processor, intel core, Intel, integrated graphics, iGPU, Foveros, cpu, 3D stacking
Intel’s Architecture Day was held yesterday and brought announcements of three new technologies. Intel shared details of a new 3D stacking technology for logic chips, a brand new CPU architecture for desktop and server, and some surprising developments on the iGPU front. Oh, and they mentioned that whole discrete GPU thing…
3D Stacking for Logic Chips
First we have Foveros, a new 3D packaging technology that follows Intel’s previous EMIB (Embedded Multi-die Interconnect Bridge) 2D packaging technology and enables die-stacking of high-performance logic chips for the first time.
“Foveros paves the way for devices and systems combining high-performance, high-density and low-power silicon process technologies. Foveros is expected to extend die stacking beyond traditional passive interposers and stacked memory to high-performance logic, such as CPU, graphics and AI processors for the first time.”
Foveros will allow for a new “chiplet” paradigm, as “I/O, SRAM, and power delivery circuits can be fabricated in a base die and high-performance logic chiplets are stacked on top”. This new approach would permit design elements to be “mixed and matched”, and allow new device form-factors to be realized as products can be broken up into these smaller chiplets.
The first range of products using this technology are expected to launch in the second half of 2019, beginning with a product that Intel states “will combine a high-performance 10nm compute-stacked chiplet with a low-power 22FFL base die,” which Intel says “will enable the combination of world-class performance and power efficiency in a small form factor”.
Intel Sunny Cove Processors - Coming Late 2019
Next up is the announcement of a brand new CPU architecture with Sunny Cove, which will be the basis of Intel’s next generation Core and Xeon processors in 2019. No mention of 10nm was made, so it is unclear if Intel’s planned transition from 14nm is happening with this launch (the last Xeon roadmap showed a 10 nm transition with "Ice Lake" in 2020).
Intel states that Sonny Cove is “designed to increase performance per clock and power efficiency for general purpose computing tasks” with new features included “to accelerate special purpose computing tasks like AI and cryptography”.
Intel provided this list of Sunny Cove’s features:
- Enhanced microarchitecture to execute more operations in parallel.
- New algorithms to reduce latency.
- Increased size of key buffers and caches to optimize data-centric workloads.
- Architectural extensions for specific use cases and algorithms. For example, new performance-boosting instructions for cryptography, such as vector AES and SHA-NI, and other critical use cases like compression and decompression.
Integrated Graphics with 2x Performance
Intel slide image via ComputerBase
Intel did reveal next-gen graphics, though it was a new generation of the company’s integrated graphics announced at the event. The update is nonetheless significant, with the upcoming Gen11 integrated GPU “expected to double the computing performance-per-clock compared to Intel Gen9 graphics” thanks to a huge increase in Execution Units, from 24 EUs with Gen9 to 64 EUs with Gen11. This will provide “>1 TFLOPS performance capability”, according to Intel, who states that the new Gen11 graphics are also expected to feature advanced media encode/decode, supporting “4K video streams and 8K content creation in constrained power envelopes”.
And finally, though hardly a footnote, the new Gen11 graphics will feature Intel Adaptive Sync technology, which was a rumored feature of upcoming discrete GPU products from Intel.
And now for that little part about discrete graphics: At the event Intel simply “reaffirmed its plan to introduce a discrete graphics processor by 2020”. Nothing new here, and this obviously means that we won’t be seeing a new discrete GPU from Intel in 2019 - though the beefed-up Gen11 graphics should provide a much needed boost to Intel’s graphics offering when Sonny Cove launches “late next year”.