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KaiXian KX-5640
KX-5640 front
General Info
Designer	Zhaoxin
Manufacturer	HLMC
Model Number	KX-5640
Part Number	KX-5640
Market	Desktop, Mobile, Embedded
Introduction	December 28, 2017 (announced) December 28, 2017 (launched)
General Specs
Family	KaiXian
Series	KX-5000
Frequency	2,000 MHz
Bus type	PCIe 3.0
Bus rate	4 × 8 GT/s
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	WuDaoKou
Process	28 nm
Transistors	2,100,000,000
Technology	CMOS
Die	187 mm²
Word Size	64 bit
Cores	4
Threads	4
Max Memory	64 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Tjunction	0 °C – 90 °C

KaiXian KX-5640 is a 64-bit quad-core x86 microprocessor designed by Zhaoxin and introduced in late 2017 specifically for the Chinese market. This processor is fabricated on a 28 nm process based on the WuDaoKou microarchitecture. The KX-5640 operates at 2 GHz with a TDP of ? W and supports up to 64 GiB of dual-channel DDR4-2133 memory. The KX-5640 also incorporates an integrated graphics processor.

Preliminary Data! Information presented in this article deal with a microprocessor or chip that was recently announced or leaked, thus missing information regarding its features and exact specification. Information may be incomplete and can change by final release.

Cache

Main article: WuDaoKou § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 256 KiB 262,144 B 0.25 MiB L1I$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 8-way set associative   L1D$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 8-way set associative   L2$ 4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB     1x4 MiB 32-way set associative

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2133 Supports ECC No Max Mem 64 GiB Controllers 1 Channels 2 Max Bandwidth 31.79 GiB/s 32,552.96 MiB/s 34.134 GB/s 34,134.253 MB/s 0.031 TiB/s 0.0341 TB/s Bandwidth Single 15.89 GiB/s Double 31.79 GiB/s