Intel DZ68ZV Technical Product Specification - Page 17

System Memory

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Product Description 1.4.1 PCI Express x16 Graphics The Intel Core i7, Intel Core i5, and Intel Core i3 processors in an LGA1155 socket support discrete add in graphics cards via the PCI Express 2.0 x16 graphics connector: • Supports PCI Express GEN2 frequency of 2.5 GHz resulting in 5.0 Gb/s each direction (500 MB/s) per lane. The maximum theoretical bandwidth on the interface is 8 GB/s in each direction, simultaneously, for an aggregate of 16 GB/s when operating in x16 GEN2 mode. • Supports PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each direction (250 MB/s) per lane. The maximum theoretical bandwidth on the interface is 4 GB/s in each direction, simultaneously, for an aggregate of 8 GB/s when operating in x16 GEN1 mode. For information about PCI Express technology Refer to http://www.pcisig.com 1.5 System Memory The board has four DIMM sockets and supports the following memory features: • 1.35 V DDR3 SDRAM DIMMs (JEDEC Specification) • Two independent memory channels with interleaved mode support • Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMs with x16 organization are not supported. • 32 GB maximum total system memory (using 4 Gb memory technology). Refer to Section 2.1.1 on page 43 for information on the total amount of addressable memory. • Minimum total system memory: 1 GB using 512 MB x16 module • Non-ECC DIMMs • Serial Presence Detect • DDR3 +1600 MHz, 1333 MHz, and 1066 MHz SDRAM DIMMs • XMP version 1.2 performance profile support for memory speeds above 1600 MHz NOTE To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This allows the BIOS to read the SPD data and program the chipset to accurately configure memory settings for optimum performance. If non-SPD memory is installed, the BIOS will attempt to correctly configure the memory settings, but performance and reliability may be impacted or the DIMMs may not function under the determined frequency. CAUTION 1.5 V is the recommended and default setting for DDR3 memory voltage. The other memory voltage settings in the BIOS Setup program are provided for performance tuning purposes only. Altering the memory voltage may (i) reduce system stability 17

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Product Description
17
1.4.1
PCI Express x16 Graphics
The Intel Core i7, Intel Core i5, and Intel Core i3 processors in an LGA1155 socket
support discrete add in graphics cards via the PCI Express 2.0 x16 graphics connector:
•
Supports PCI Express GEN2 frequency of 2.5 GHz resulting in 5.0 Gb/s each
direction (500 MB/s) per lane.
The maximum theoretical bandwidth on the
interface is 8 GB/s in each direction, simultaneously, for an aggregate of 16 GB/s
when operating in x16 GEN2 mode.
•
Supports PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each
direction (250 MB/s) per lane.
The maximum theoretical bandwidth on the
interface is 4 GB/s in each direction, simultaneously, for an aggregate of 8 GB/s
when operating in x16 GEN1 mode.
For information about
Refer to
PCI Express technology
1.5
System Memory
The board has four DIMM sockets and supports the following memory features:
•
1.35 V DDR3 SDRAM DIMMs (JEDEC Specification)
•
Two independent memory channels with interleaved mode support
•
Unbuffered, single-sided or double-sided DIMMs with the following restriction:
Double-sided DIMMs with x16 organization are not supported.
•
32 GB maximum total system memory (using 4 Gb memory technology).
Refer to
Section 2.1.1 on page 43 for information on the total amount of addressable
memory.
•
Minimum total system memory:
1 GB using 512 MB x16 module
•
Non-ECC DIMMs
•
Serial Presence Detect
•
DDR3 +1600 MHz, 1333 MHz, and 1066 MHz SDRAM DIMMs
•
XMP version 1.2 performance profile support for memory speeds above 1600 MHz
NOTE
To be fully compliant with all applicable DDR SDRAM memory specifications, the board
should be populated with DIMMs that support the Serial Presence Detect (SPD) data
structure.
This allows the BIOS to read the SPD data and program the chipset to
accurately configure memory settings for optimum performance.
If non-SPD memory
is installed, the BIOS will attempt to correctly configure the memory settings, but
performance and reliability may be impacted or the DIMMs may not function under the
determined frequency.
CAUTION
1.5 V is the recommended and default setting for DDR3 memory voltage.
The other
memory voltage settings in the BIOS Setup program are provided for performance
tuning purposes only.
Altering the memory voltage may (i) reduce system stability