EVGA Z790 CLASSIFIED User Manual page 15

EVGA Z790 CLASSIFIED (121-RL-E798)
Component Legend Descriptions
1. CPU Socket 1700
This is the interface for the Central Processing Unit (CPU), and supports 13
and 12 Gen. Intel
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LGA1700 Socket, based on Raptor Lake-S and Alder Lake-S architecture.
2. Intel Z790 PCH
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The Platform Controller Hub (PCH) works as a hub for peripherals that are less
bandwidth-intensive. The PCH has 8x DMI lanes (Gen4), up to 20x PCIe
Gen4, and up to 8x PCIe Gen3 lanes to allocate bandwidth to smaller PCIe
slots, M.2, USB, audio, etc.
3. PWM Fan Headers (CPU1 and CPU2)
4-pin fan headers control the fan speed via a configurable Smart curve or static
percentage. PWM control works by pulsing power to the fan at a constant rate
and sending the RPM signal to the fan's controller. PWM control is preferred
because it eliminates voltage-based fan stall points. See Page 83 for an in-depth
breakdown of PWM controls within the BIOS.
These headers also support 12VDC fans. DC fans are controlled by decreasing
voltage to the fan, causing the fan to spin slower as less voltage is provided.
However, DC-powered fans may stall if the voltage provided is below the fan's
minimum threshold for operation.
4. PWM/DC Fan Headers
These headers may be used with both DC and PWM fans, and may be
controlled via Smart Fan or manually within the BIOS.
5. Pump Headers (3A)
These headers are designed for use with AIO coolers and pumps designed for
PC watercooling. This header provides up to a solid 3A of power to the
connected device, helping to avoid a common issue where devices may not be
recognized due to insufficient power. These headers may be controlled via
Smart Fan or manually from within the motherboard BIOS.
6. DDR5 Memory Slots
The memory slots support up to four 288-pin DDR5 DIMMs in Dual-Channel
mode. Dual-Channel mode requires installing two or four sticks of supported
memory. Using only one stick of memory will lower the board to Single-
Channel mode, which may significantly lower performance. 128GB of RAM is
supported in a 4x32GB configuration. At the time of this manual's release, this
Core i3, i5, i7 and i9 models compatible with the Intel
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