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Intel Z790 motherboards discovered with up to DDR5-6800 and DDR4-5333 memory support

Intel Z790 motherboards discovered with up to DDR5-6800 and DDR4-5333 memory support
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Intel’s Z790 motherboards will soon be available for 13th Gen Raptor Lake desktop CPUs and offer improved DDR5 and DDR4 memory support.

Intel Z790 motherboards offer faster DDR5 and DDR4 memory support for 13th Gen Raptor Lake CPUs

In a leaked datasheet graphics cardz, presumably from MSI, we can see that the Z790 chipset motherboards will offer faster DDR5 and DDR4 memory speeds compared to the existing Z690 motherboards. A total of three motherboards were listed, one with DDR5 support and the other two with DDR4 support.

Intel Z790 DDR5 motherboard spec sheet from MSI (Image credit: Videocardz):

According to the datasheet, the DDR5 Z790 motherboard has four DIMM slots supporting 128GB capacities with the following speeds:

  • 1 DIMM per channel (1-rank) – Up to DDR5-6800+
  • 1 DIMM per channel (1-rank) – Up to DDR5-6400+
  • 2 DIMMs per channel (2-rank) – Up to DDR5-6400+
  • 2 DIMMs per channel (2-rank) – Up to DDR5-5600+

For Z790 DDR4 motherboards, it looks like the maximum memory speed supported here will be up to DDR4-5333+. Below are the speeds for the faster Z790 DDR4 configuration:

  • 1 DIMM per channel (1-rank) – Up to DDR4-5333+
  • 1 DIMM per channel (1-rank) – Up to DDR4-4800+
  • 2 DIMMs per channel (2-rank) – Up to DDR4-4400+
  • 2 DIMMs per channel (2-rank) – Up to DDR4-4000+

Intel Z790 DDR4 motherboard spec sheet from MSI (Image credit: Videocardz):

On Z690 motherboards, the fastest memory speeds for the DDR5 and DDR4 motherboards in each segment are listed as follows.

  • MEG (DDR5) – Up to DDR5-6666+
  • MPG (DDR5) – Up to DDR5-6666+
  • MAG (DDR5) – Up to DDR5-6400+
  • MPG (DDR4) – Up to DDR5-5200+
  • MAG (DDR4) – Up to DDR4-5200+

For comparison: The previously listed AMD X670E motherboards range from DDR5-6600 to DDR5-6000 speeds. We recently reported on two ASRock X670E motherboards and Biostars X670E Valkyrie whose specifications were recently detailed. You can read more about this here.

Biostar X670E Valkyrie motherboard:

  • Support Dual Channel DDR5 6000+(OC)/ 5800(OC)/ 5600(OC)/ 5400(OC)/ 5200(OC)/ 5000(OC)/ 4800
  • 4 x DDR5 DIMM memory slot max. Supports up to 128GB of memory
  • Each DIMM supports non-ECC 8/16/32GB DDR5 modules

ASRock X670E Taichi Carrera motherboard

  • Dual channel DDR5 memory technology
  • 4 x DDR5 DIMM slots
  • Supports DDR5 ECC/Non-ECC, unbuffered memory up to 6600+(OC)
  • Max system memory capacity: 128GB
  • Supports Extreme Memory Profile (XMP) and EXTended Profiles for Overclocking (EXPO) memory modules

Intel Z790 motherboards will launch in October alongside the 13th Gen Raptor Lake CPU lineup. However, the motherboards will have support for PCIe Gen 5.0 and DDR5 memory will not have a PCIe Gen 5.0 M.2 slot directly connected to the CPU Gen 5 lanes unless board vendors choose to split the discrete GPU x16 lanes.

13th Gen Intel Raptor Lake Desktop CPUs Expected Features:

  • Up to 24 cores and 32 threads
  • Brand new Raptor Cove CPU cores (higher P-Core IPC)
  • Based on the 10nm ESF “Intel 7” process node.
  • Up to 6.0 GHz clock frequency (expected)
  • Double the E-Cores on certain variants
  • Increased cache for P-Cores and E-Cores
  • Supported on existing LGA 1700 motherboards
  • New Z790, H770 and B760 motherboards
  • Up to 28 PCIe lanes (PCH Gen 4 + Gen 3)
  • Up to 28 PCIe lanes (CPU Gen 5 x16 + Gen 4 x12)
  • Dual channel DDR5-5600 memory support
  • 20 PCIe Gen 5 lanes
  • Improved overclocking capabilities
  • 125W PL1 TDP (Flagship SKUs)
  • AI PCIe M.2 technology
  • Launch in Q4 2022 (Possibly October)

The Intel 13th Gen Raptor Lake desktop CPUs including the flagship Core i9-13900K expected launch in October on the Z790 platform. The CPUs will go against AMD’s Ryzen 7000 CPU lineup which will also start in autumn 2022.

Comparison between Intel Raptor Lake and AMD Raphael desktop CPUs “expected”

CPU family AMD Raphael (RPL-X) Intel Raptor Lake (RPL-S)
process node TSMC5nm Intel7
Architecture Zen 4 (Chiplet) Raptor Cove (P-Core)
Gracemont (E core)
Flagship SKU Ryzen 9 7950X Core i9-13900K
cores / threads Until 16/32 Until 24/32
Entire L3 cache 64 MB (+3D V cache) 36MB
Entire L2 cache 16MB 32MB
total cache 80MB 68MB
Max. cycles (1T) 5.7GHz 5.8GHz
memory support DDR5 DDR5/DDR4
memory channels 2-channel (2DPC) 2-channel (2DPC)
memory speeds DDR5-5600 DDR5-5600
DDR4-3200
platform support 600 series (X670E/X670/B650/A620) 600 series (Z690/H670/B650/H610)
700 series (Z790/H770/B760)
PCIe Gen 5.0 Both GPU and M.2 (Extreme chipsets only) Both GPU and M.2 (700 series only but shared)
Integrated graphics AMD RDNA 2 Intel Iris Xe
Power outlet AM5 (LGA 1718) LGA1700/1800
TDP (max) 170W (TDP)
230W (PPT)
125W (PL1)
240W+ (PL2)
begin Sep 2022 October 2022

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