IBM z13 Chip Optimized for Top Enterprise Performance

With the zEC12 IBM boasted of the fastest commercial chip in the industry. It is not making that boast with the z13. Instead, it claims a 40% total capacity improvement over the zEC12. The reason: IBM wants the z13 to excel at mobile, cloud, and analytics as well as fast extreme scale transaction processing. This kind of performance requires optimization up and down the stack; not just chip speed but I/O processing, memory access, instruction tweaks, and more.

 z13 mobile

Testing mobile transactions on the z13

This is not to suggest that the machine is not fast.  It is.  Timothy Prickett Morgan writing in his 400 blog notes that the z13 chip runs a 22 nm core at 5 GHz, half a GHz slower than the zEC12. The zEC12 processor, the one touted as the fastest commercial processor, was a 32nm core that clocked at 5.5 GHz.  Still, the z13 delivers about a 10 percent performance bump per core thanks, he writes, to other tweaks in the core design, such as better branch prediction and better pipelining in the core. The slightly slower clock speed reduces heat.

Up and down the stack IBM has been optimizing the z13 for maximum performance.

  • 2X performance boost for cryptographic coprocessors
  • 2X increase in channel speed
  • 2X increase in I/O bandwidth
  • 3X increase in memory capacity
  • 2X increase in cache and a new level of cache

At 5 GHz, the z13, given all the enhancements IBM has made, remains the fastest. According to IBM, it is the first system able to process 2.5 billion transactions a day, equivalent of 100 Cyber Mondays every day of the year.  Maybe even more importantly, z13 transactions are persistent, protected, and auditable from end-to-end, adding assurance as mobile transactions grow to an estimated 40 trillion (that’s trillion with a T) mobile transactions per day by 2025.

Given that mobile is shaping up to be the device of the future the z13 is the first system to make practical real-time encryption of all mobile transactions at any scale, notes IBM. Specifically, the z13 speeds real-time encryption of mobile transactions to help protect the transaction data and ensure response times consistent with a positive customer experience.  With mobile overall, the machine delivers up to 36% better response time, up to 61% better throughput, and up to 17% lower cost per mobile transaction. And IBM discounts transactions running on z/OS.

To boost security performance the machine benefits from 500 new patents including cryptographic encryption technologies that enable more security features for mobile initiated transactions. In general IBM has boosted the speed of encryption up to 2x over the zEC12 to help protect the privacy of data throughout its life cycle.

Combined with the machine’s embedded analytics it can provide real-time insights on all transactions. This capability helps enable an organization to run real-time fraud detection on 100 percent of its business transactions.  In terms of analytics, the machine deliver insights up to 17x faster at 13x better price performance than its competitors.

Further boosting performance is the increase of memory in the machine. For starters, the machine can handle up to 10 TB of memory onboard to help with z/OS and Linux workloads. To encourage organizations to take advantage of the extra memory IBM is discounting the cost of memory. Today memory runs $1500/GB but organizations can populate the z13 with new memory starting at $1000/GB. With various discounts you can get memory for as little as $200/GB.

So what will you do with a large amount of discounted memory? Start by running more applications in-memory to boost performance.  Do faster table scans in memory to speed response or avoid the need for I/O calls. Speed sorting and analytics by doing it in memory to enable faster, almost real-time decision making. Or you can run more Java without increasing paging and simplify the tuning of DB2, IMS and CICS. Experience 10x faster response time with Flash Express and a 37% increase in throughput compared to disk.

As noted above IBM optimized just about everything that can be optimized. It provides 320 separate channels dedicated just to drive I/O throughput as well as performance goodies only your geeks will appreciate like simultaneous multithreading (SMT), symmetric multiprocessing (SMP), and single instruction, multiple data (SIMD). Overall about 600 processors (in addition to your configurable cores) speed and streamline processes throughout the machine.

Mainframes have the fastest processors in the industry –none come close–and with the addition of more memory, faster I/O,  and capabilities like SMT and SIMD noted above, the z13 clearly is the fastest. For workloads that benefit from this kind of performance, the z13 is where they should run.

DancingDinosaur is Alan Radding, a long-time IT analyst and writer. You can follow DancingDinosaur on Twitter, @mainframeblog. Check out his other IT writing at and here.

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One Response to “IBM z13 Chip Optimized for Top Enterprise Performance”

  1. Compuware Topaz Brings Distributed Style to the Mainframe | DancingDinosaur Says:

    […] Mainframe computing in the 21st century « IBM z13 Chip Optimized for Top Enterprise Performance […]

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