Intel发布第二代可扩展Xeon:56核心112线程、傲腾内存、400W功耗

The 2nd-Generation Intel Xeon Scalable platform provides the foundation for a powerful data center platform that creates a leap in agility and scalability. Intel Corporation on April 2, 2019, introduced a portfolio of data-centric tools to help its customers extract more value from their data. (Credit: Intel Corporation)

4月3日,Intel正式发布了代号Cascade Lake的第二代可扩展Xeon至强服务器处理器,工艺和架构本质上还是基于14nm Skylake-SP,但是核心数量翻番,并支持傲腾可持续内存,加强了对AI、5G应用的支持。

相比于第一代至强x100,今天的至强x200系列新品主要变化有:

- 新增代号Cascade Lake-AP的铂金9200系列,内置两颗Die,最多56核心112线程,热设计功耗最高400W

- 绝大多数中端型号核心数量更多,但价格不变

- 绝大多数终端型号三级缓存容量更大

- 几乎所有型号都提升了频率

- DDR4内存支持频率提高

- 几乎所有铂金、金牌系列都支持傲腾可持续内存(Optane DC Persistent Memory)

- 针对特定市场增加新的CPU配置

- 增强的熔断、幽灵漏洞补丁(变种2/3/3a/4/L1TF)

- 新的AVX-512 VNNI指令集

- 面向云部署的Speed Select技术

- 内置Intel DLBoost机器学习加速,推理性能提升1.4倍,并有OpenVINO软件优化

新一代产品仍然分为铂金、金牌、银牌、铜牌四大序列,具体包括铂金9200/8200、金牌6200/5200、银牌4200、铜牌3200,总计多达至少59款型号,其中新增的更高规格铂金9200系列有四款。

上代产品旗舰铂金8180最多28核心56线程,主频2.5-3.8GHz,三级缓存38.5MB,三条UPI总线,支持六通道DDR4-2666内存,最大容量768GB,热设计功耗205W,标价1万美元。

而新旗舰铂金9282通过双芯片封装的方式来到了56核心112线程,主频却提高到2.6-3.8GHz,三级缓存也翻番至77MB,UPI总线增至四条,内存支持来到十二通道DDR4-2933,最大容量1.5TB(标准版),热设计功耗高达400W,价格没说,但是你想象吧,低于3万美元算我输。

mde

Intel强调,在双路配置中,任意CPU Die之间的延迟都只需要一个跳跃(hop),不过注意PCIe 3.0总线仍是每颗处理器40条,加上芯片组48条。

同时还有48核心96线程的铂金9242,主频2.3-3.8GHz,三级缓存71.5MB,总线和内存同上,热设计功耗350W。

32核心64线程的铂金9222/9221,最高加速均为3.7GHz,三级缓存仍有71.5MB,热设计功耗250W。

同时注意,铂金9200系列都不是LGA独立封装,而是改成了BGA整合封装,直供OEM,不会单独售卖。

金牌8280、8280L、8280M、8276、8276L、8276M六款型号都是28核心56线程,最高加速4.0GHz,三级缓存38.5MB,热设计功耗205W或者165W,价格最高的82880L达到了17906美元,8280M也有13012美元,8280则维持了上代10009美元。

新一代还针对不同市场增加了各种变种型号,以不同后缀区分,具体包括:无后缀标准版(1.5TB内存)、M中等内存支持(2.0TB)、L大容量内存支持(4.5TB)、Y、N网络和网络虚拟化、V虚拟机密集型、T长寿命和低功耗、S搜索优化。

各自规格和价格如下:

新一代的另一大变化就是支持傲腾DC可持续内存,不是缓存盘也不是固态盘,而是DDR4规格兼容的真内存。

首先,它能以稍低的速度为系统增加更多内存,最高支持3TB傲腾内存,加上最多1.5TB标准DDR4,单路系统就可以拥有最多4.5TB的海量内存,其中DDR4在傲腾之前扮演缓冲存储的角色,以减低延迟。

其次,所谓持久性,意味着即便关机或者重启之后,傲腾内存里的数据也不会丢失,可以立即载入,从而大幅度减少系统下线时间。

傲腾可持续内存支持两种工作模式,Memory Mode下只是纯粹的DDR4内存,App Direct模式下则是存储设备但拥有类似DRAM Disk内存缓存盘的性能,但这时候需要重新配置软件。

傲腾DC可持续内存单条容量128GB、256GB、512GB,但价格暂未公布。OEM则表示相关方案产品会在6月左右推出。

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