Cryo

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Cryo of Qualcomm is the brand name of a series of custom or semi-custom ARM -based CPUs . These CPUs implement the ARMv8 -A 64-bit instruction set and serve as the successor to the older 32-bit Krait core.

Cryo

First announced in September 2015 and used in the Snapdragon 820 System-on-a-Chip , it was manufactured by Samsung using the 14 nm FinFET process (14LPP) . The cryo-cores can be used in both parts in the big.LITTLE configuration, where two dual-core clusters (in the case of the Snapdragon 820 and 821) run at different clock frequencies , similar to the two Cortex-A53 clusters in the Snapdragon 615. The cryo-cores are an in-house development by Qualcomm, each core has a 32 KiB L1D and L1I cache available. The cluster clocked at 1.593 GHz has a shared 512 KiB L2 cache, while the cluster clocked at 2.150 GHz has a shared 1 MiB L2 cache.

Cryo 280

A new generation of this microarchitecture , called the Kryo 280, was announced along with the Snapdragon 835 chipset in November 2016. 4 Kryo 280 Gold (performance clusters, up to 2.45 GHz) and 4 Kryo 280 Silver (efficiency clusters, 1.90 GHz) are used. The Kryo 280 CPU cores are not a derivative of the original Kryo, but a customer-specific derivative of the ARM Cortex-A73 (Gold) or the Cortex-A53 (Silver). The new A73 core improves integer commands per cycle, while the performance of Floating Point Operations Per Second is significantly lower compared to the original Kryo. The performance clusters is a common 2 MiB L2 cache , the efficiency of cluster a common 1 MiB L2 cache.

Cryo 260

The Kryo 260 was announced together with the Snapdragon 660 chipset for mid-range smartphones in May 2017. This CPU is a combination of four semi-custom Cortex-A73 cores (the performance cluster) and four semi-custom Cortex-A53 cores (the efficiency cluster) in a big.LITTLE arrangement. Kryo 260 uses 1MB / 1MB L2 per cluster and is based on a 14nm process .

Cryo 385

The Kryo 385 was announced as part of the Snapdragon 845 in December 2017. Based on a 10 nm process (10LPP) from Samsung, the SoC contains eight semi-custom cores, 4 high-performance "Gold" cores and 4 "Silver" efficiency cores in a large cluster, which was made possible by DynamIQ , ARM's successor to big. LITTLE. The gold cores are derived from the ARM Cortex-A75 , run at up to 2.8 GHz and each have 256 KiB L2 cache. The silver cores are derived from the Cortex-A55, run at up to 1.8 GHz and each have a 128 KiB L2 cache. All cores can access a shared 2 MiB L3 cache via DynamIQ. Compared to the Snapdragon 835, Qualcomm expects a 25-30% increase in performance when executing tasks on the high-performance cores and 15% in the efficiency cores.

Cryo 485

The Kryo 485 was announced as part of the Snapdragon 855 in December 2018. Based on a 7 nm process from TSMC , the SoC contains eight semi-custom cores, 4 high-performance "Gold" cores and 4 "Silver" efficiency cores in a DynamIQ cluster. The gold cores are derived from the Cortex-A76, the silver cores from the Cortex-A55. One of the gold cores runs at up to 2.84 GHz and has 512 KiB L2 cache available; it is the only one that uses the HP variant of the 7 nm process. The other three gold cores run at up to 2.42 GHz and each have 256 KiB L2 cache. The silver cores run at up to 1.8 GHz and each have a 128 KiB L2 cache. All cores can access a shared 2 MiB L3 cache via DynamIQ.

The Kryo 470 (Snapdragon 730 / 730G) and Kryo 490/495 (Snapdragon 8c / 8cx), which belong to the same generation, are also derived from the Cortex-A76 and Cortex-A55.

Cryo 585

The Kryo 585 was announced as part of the Snapdragon 865 in December 2019. Manufactured with the N7P process from TSMC , the SoC contains eight cores, 4 high-performance cores "Gold" and 4 efficiency cores "Silver" in a DynamIQ cluster. The gold cores are unchanged Cortex-A77, the silver cores Cortex-A55. One of the gold cores runs at up to 2.84 GHz and has 512 KiB L2 cache available. The other three gold cores run at up to 2.42 GHz and each have 256 KiB L2 cache. The silver cores run at up to 1.8 GHz and each have a 128 KiB L2 cache. All cores can access a shared 4 MiB L3 cache via DynamIQ.

See also

Individual evidence

  1. ↑ Snapdragon 820 and Kryo CPU . Qualcomm. 2nd September 2015.
  2. ↑ Qualcomm Announces Kryo CPU Details: Quad Core 2.2 GHz, 14 nm FinFET . AnandTech . 2nd September 2015.
  3. ↑ http://www.anandtech.com/show/9837/snapdragon-820-preview/2
  4. ↑ The Qualcomm Snapdragon 835 Performance Preview , Anandtech. 22nd March 2017. 
  5. ↑ Snapdragon 660 Processor . Qualcomm.
  6. ↑ Qualcomm announces Snapdragon 660 Mobile Platform . Anandtech. May 8, 2017.
  7. ↑ Qualcomm Announces Snapdragon 845 Mobile Platform , Anandtech. December 6, 2017. Retrieved December 7, 2017. 
  8. ^ The Qualcomm Snapdragon 855 Pre-Dive , Anandtech. 5th December 2018. 
  9. ↑ Snapdragon 865 - Qualcomm , WikiChip. January 9, 2020.