Command Rate CR, Write Recovery Time tWR

Z87 Extreme9/ac

Command Rate (CR)

The delay between when a memory chip is selected and when the first active command can be issued.

Write Recovery Time (tWR)

The amount of delay that must elapse after the completion of a valid write operation, before an active bank can be precharged.

Refresh Cycle Time (tRFC)

The number of clocks from a Refresh command until the first Activate command to the same rank.

RAS to RAS Delay (tRRD)

The number of clocks between two rows activated in different banks of the same rank.

Write to Read Delay (tWTR)

The number of clocks between the last valid write operation and the next read command to the same internal bank.

Read to Precharge (tRTP)

The number of clocks that are inserted between a read command to a row pre- charge command to the same rank.

Four Activate Window (tFAW)

The time window in which four activates are allowed the same rank.

CAS Write Latency (tCWL)

Configure CAS Write Latency.

tREFI

Configure refresh cycles at an average periodic interval.

tCKE

Configure the period of time the DDR3 initiates a minimum of one refresh command internally once it enters Self-Refresh mode.

tRDRD

Configure between module read to read delay.

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Z87 Extreme9/ac specifications

The ASRock Z87 Extreme9/ac motherboard is designed to empower enthusiasts and professionals who demand high performance, flexibility, and cutting-edge features. Built on Intel's Z87 chipset, this motherboard supports the fourth generation Intel Core processors, offering exceptional performance for both gaming and productivity tasks.

One of the standout features of the Z87 Extreme9/ac is its impressive power design. The motherboard is equipped with a 12-phase power design that allows for better power delivery and stability, crucial for overclocking. The Digi Power technology enhances the efficiency of power delivery, while the premium capacitors ensure longevity and reliability, allowing for increased operational lifetimes under heavy loads.

The ASRock Z87 Extreme9/ac comes with four DIMM slots supporting a maximum of 32GB DDR3 memory up to 3100 MHz when overclocked. This ample memory capacity makes it an excellent choice for memory-intensive applications such as video editing, 3D rendering, and gaming. The motherboard features an extensive array of USB ports, including USB 3.0 connectivity, enabling fast data transfer speeds for external devices.

For gaming and multimedia enthusiasts, the Z87 Extreme9/ac integrates a Realtek ALC1150 audio chip, which provides a high-definition sound quality that enhances the entire gaming experience. The motherboard also features the Purity Sound technology, providing a dedicated audio power supply, which minimizes electronic noise for superior audio fidelity.

Another key feature is the inclusion of dual Gigabit Ethernet ports powered by the Intel LAN chip, enabling load balancing and failover protection for a more reliable and faster network connection. The ASRock Z87 Extreme9/ac also supports Thunderbolt technology, providing ultra-fast data transfer speeds and the ability to connect multiple devices through a single port.

In terms of storage, the motherboard offers extensive support for SATA III and RAID configurations, enhancing data transfer rates and redundancy options. The Z87 Extreme9/ac provides several PCIe slots for expansion cards, ensuring users can customize their systems to meet their specific needs.

In summary, the ASRock Z87 Extreme9/ac is a feature-rich motherboard aimed at gamers and power users seeking advanced performance and stability. With its top-notch power delivery system, audio capabilities, and connectivity options, it stands as a solid foundation for building a high-performance computing environment.

ASRock Z87 Extreme9/ac Command Rate CR, Write Recovery Time tWR, Refresh Cycle Time tRFC, Trefi

Models: Z87 Extreme9/ac