ASUS ROG STRIX X870E-E GAMING WIFI Upgrade Guide: RAM, SSD, CPU

Updated Oct. 9, 2026 · Written from this device's verified specifications

This guide covers adding memory, storage or a faster processor to the ASUS ROG STRIX X870E-E GAMING WIFI. In short: it takes DDR5 in four slots, five M.2 NVMe slots plus four SATA ports, and AMD AM5 Ryzen 7000, 8000G and 9000 processors up to 170 W.

At a glance

  • 4 DDR5 DIMM slots, dual channel, unbuffered ECC or non-ECC; 256 GB per ASUS spec pages, 192 GB per the manuals
  • 5 M.2 NVMe slots, but only three run at PCIe 5.0; Ryzen 8000G APUs disable two of them
  • 4 SATA 6Gb/s ports for 2.5-inch and 3.5-inch drives (drive bays depend on your case)
  • AM5 socket for Ryzen 9000, 8000G and 7000; several Ryzen 9000 chips need a BIOS update first
DDR5 DIMM4 × DDR5 DIMM · up to 256 GB total · 8400 MT/s
M.2_1 / M.2_2 (CPU, Key M)2 × SSD M.2 2242 / M.2 2260 / M.2 2280 (NVMe)
M.2_3 (CPU, Key M, supports 22110)SSD M.2 2242 / M.2 2260 / M.2 2280 / M.2 22110 (NVMe)
M.2_4 / M.2_5 (chipset, Key M)2 × SSD M.2 2280 (NVMe)
SATA 6Gb/s ports4 × HDD / SSD 2.5" / 3.5" (SATA)
AMD Socket AM5AM5 · Ryzen 7000, Ryzen 8000G, Ryzen 9000 · max 170 W
CPU · AM5max 170 W4 × DIMM · DDR5up to 256 GB totalM.2_1 / M.2_2 (CPU, Key M)2 × SSD M.2 2242 / M.2 2260 /M.2 2280 (NVMe)M.2_3 (CPU, Key M,supports 22110)SSD M.2 2242 / M.2 2260 / M.2 2280 /M.2 22110 (NVMe)M.2_4 / M.2_5 (chipset, Key M)2 × SSD M.2 2280 (NVMe)SATA 6Gb/s ports4 × HDD / SSD 2.5" / 3.5" (SATA)
Schematic of the upgradeable slots (not to scale). Check the owner's manual for their exact positions.

Lifecycle and support

A current model: sold new and supported.

2024202520262027Today11 · Release · Sept. 23, 2024
Filled dots: dates published by the manufacturer. Hollow dots: estimates from third-party sources.
MilestoneDate
Release
First available to buy.		 Sept. 23, 2024 Official Proxy: date of first BIOS release (Version 0223, 'First Release') on the ASUS support page; not a launch announcement.
Source ↗

Dates not listed haven't been published by the manufacturer or a reliable third party.

Memory (RAM) upgrades

The board has 4 DIMM slots for full-size desktop DDR5 memory in a dual-channel layout. It accepts unbuffered DIMMs, ECC or non-ECC. Registered DIMMs are not listed, and all memory lives in the DIMM slots (nothing is soldered).

Capacity is where the documents disagree. The ASUS ROG spec pages list a 256 GB maximum, which implies 64 GB modules in all four slots. The two ASUS manuals say 192 GB, which implies 48 GB modules. The 256 GB figure is probably newer, but ASUS doesn't say so. Check the memory QVL and BIOS notes before buying 64 GB modules.

Speeds above the default are overclocks and depend on the CPU: 8000+ MT/s with Ryzen 9000, 8400+ MT/s with Ryzen 8000 and 8000+ MT/s with Ryzen 7000. Modules may run below their rated speed until you enable EXPO or AEMP in the BIOS. If you use ECC unbuffered DIMMs with a Ryzen 9000 CPU, ASUS notes a 5200 MT/s speed limit from AGESA ComboAM5 PI 1.3.0.0 onward.

Buying tips

  • Buy one matching kit rather than mixing kits, and keep the same CAS latency across all modules.
  • Look for AMD EXPO or ASUS AEMP profiles so the rated speed is easy to enable.
  • Check the ASUS memory QVL for your exact kit, especially for 64 GB modules or four-module setups.
  • Expect more speed headroom with some CPUs than others; module count and supported speed vary by processor.

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Storage upgrades: M.2 SSDs and SATA drives

There are 5 M.2 slots, all Key M and NVMe. M.2_1 and M.2_2 take 2242, 2260 and 2280 drives. M.2_3 also takes 22110 and is the only slot that does. M.2_4 and M.2_5 are chipset slots that take 2280 only and run at PCIe 4.0 x4. With Ryzen 9000 or 7000, M.2_1, M.2_2 and M.2_3 run at PCIe 5.0 x4, so only those three are Gen 5.

Watch the Ryzen 8000G APUs. With one of those installed, M.2_2 and M.2_3 are disabled and M.2_1 drops to PCIe 4.0, leaving three Gen 4 slots in total. Also, M.2_2 and M.2_3 share lanes with the main graphics slot. Using them drops the graphics slot to x8. ASUS's spec page says this applies when both are occupied, or when one is enabled and the other is unused, while the manual says only that both occupied means x8. If full x16 for your graphics card matters, use M.2_1, M.2_4 or M.2_5 first.

There are also 4 SATA 6Gb/s ports for 2.5-inch and 3.5-inch drives. These are motherboard ports, not drive bays, so you need SATA cables and a case with room for the drive. RAID 0/1/5/10 is supported through AMD RAIDXpert2, and RAID 5 works only with Ryzen 9000. ASUS's documents don't mention SATA-mode M.2 drives, so buy NVMe. A maximum total storage capacity is not stated.

Buying tips

  • Buy an NVMe (PCIe) M.2 SSD; SATA-only M.2 drives are not listed as supported.
  • Only buy a 22110 (long) SSD if you plan to use M.2_3.
  • Chipset slots M.2_4 and M.2_5 fit 2280 drives only and run at Gen 4, so a Gen 5 drive gains nothing there.
  • Check your case for 2.5-inch or 3.5-inch bays and get SATA cables before ordering a SATA drive.

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CPU upgrades

The CPU is socketed, not soldered. The board has a single AMD AM5 socket with the X870E chipset and supports Ryzen 9000, 8000G and 7000 series desktop processors. The highest rated TDP on ASUS's validated list is 170 W (for example the Ryzen 9 9950X3D, 9950X, 7950X and 7900X).

Several Ryzen 9000 chips need a minimum BIOS. Per the ASUS CPU list, the 9950X3D and 9900X3D need BIOS 1003, the 9800X3D needs 0505, the 9850X3D needs 1804, the 9600 needs 0706, and the PRO 9945, PRO 9745, PRO 9645 and 9500F need 1605. The 9950X, 9900X, 9700X and 9600X, and the Ryzen 7000 chips in the table (such as 7950X3D, 7950X, 7900X3D, 7900X, 7900 and PRO 7945), work with every BIOS version. Many other 7000 and 8000G parts are also listed, but their BIOS requirements were not available to us, so check the full list.

Platform limits depend on the CPU. Ryzen 9000 and 7000 give a PCIe 5.0 x16 graphics slot at x16. Ryzen 8000G APUs limit the main slot to PCIe 4.0 and they run at x8/x4 depending on the chip. The Ryzen 9 9950X3D2 Dual Edition is mentioned in the BIOS 2402 release notes, but we couldn't confirm its TDP or whether it appears on the CPU list, so check before buying.

ASUS gives no minimum power supply wattage per CPU or a cooler rating. Choose a cooler suited to the chip and follow the manual for installing it after the CPU.

Buying tips

  • Check the live ASUS CPU list and BIOS page for your exact chip before buying.
  • If your chip needs a newer BIOS than the board has, update first. BIOS FlashBack can do this without a CPU.
  • Pick a cooler rated for the CPU's TDP; the board supports chips up to 170 W.
  • Keep the socket's PnP cap. ASUS will only process an RMA with the cap on the socket.

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How to upgrade

Before you start

  • Back up important files before changing storage or the BIOS.
  • Check your current BIOS version, then compare it with the minimum your new CPU needs on the ASUS CPU list.
  • Have the owner's manual open for exact disassembly and part locations.
  • Note that BIOS 2402 and an earlier update (AGESA 1.2.0.3e) cannot be rolled back, so don't update more than you need to.
  • Work on a clean, static-free surface and keep small screws in a dish.
  • For a CPU swap, keep the PnP cap from the socket in a safe place.

Steps

  1. Back up and prepare
    Back up your data, note your BIOS version, and if you are installing a Ryzen 9000 chip that needs a newer BIOS, update the BIOS before swapping the CPU. BIOS FlashBack works without a CPU or OS: download the BIOS from ASUS support and rename the file with BIOSRenamer to A5557.CAP for this board. Follow the manual for the exact FlashBack procedure.
  2. Power off and unplug
    Shut the PC down, switch off the power supply and unplug the power cable and all other cables.
  3. Ground yourself and open the case
    Touch bare metal on the case or wear an anti-static strap, then remove the side panel. Refer to your case manual for removing it.
  4. Install the new part
    For RAM, fit matching DDR5 modules into the DIMM slots, using the slot positions shown in the manual for a dual-channel setup. For an SSD, install it in an M.2 slot that fits its length, following the manual for the heatsink and mounting details, or connect a SATA drive with a SATA cable. For a CPU, remove the old CPU and cooler, then align the new chip carefully; it fits only one way, so never force it. Keep the PnP cap, and fit your heatsink or AIO cooler afterwards as described in the manual.
  5. Close up and reconnect
    Refit the side panel, reconnect the cables and switch the power supply back on.
  6. Check the BIOS
    Start the PC and enter the BIOS. Confirm it detects the new memory, SSD or CPU. For RAM, enable EXPO or AEMP if you want the rated speed. Then check that your operating system sees the new drive.

Good to know

  • ASUS's spec pages say 256 GB maximum memory while the manuals say 192 GB; this guide can't tell you which applies to your BIOS, so check the QVL.
  • BIOS requirements for the Ryzen 7000 and 8000G chips beyond those in the table above weren't available to us; check the full ASUS CPU list.
  • The ASUS CPU list shows one entry printed as Ryzen 9 9700F, which is probably a typo for a Ryzen 7 part. Confirm the exact model on the live list.
  • BIOS 2402 can't be rolled back, and an earlier update (AGESA 1.2.0.3e) is also irreversible.
  • The Ryzen 9 9950X3D2 Dual Edition is mentioned in BIOS 2402 notes, but its TDP and CPU-list entry weren't confirmed.
  • ASUS gives no minimum power supply wattage per CPU and no cooler rating for this board.
  • The warranty excludes socket contact damage from incorrect CPU installation or removal, or from a missing PnP cap.
  • Drive bays and drive thickness limits depend on your case, not the board.

Frequently asked questions

How much RAM can the ROG STRIX X870E-E GAMING WIFI take?

ASUS's spec pages list up to 256 GB across 4 DDR5 slots, but the ASUS manuals say 192 GB. Check the QVL and BIOS notes before buying 64 GB modules.

What type of RAM does it use?

Full-size DDR5 unbuffered DIMMs, ECC or non-ECC, in dual channel. Registered DIMMs are not listed. Speeds above default, such as 8000+ or 8400+ MT/s depending on the CPU, are overclocks.

Does the X870E-E support PCIe 5.0 SSDs?

Yes, but only in M.2_1, M.2_2 and M.2_3, and only with Ryzen 9000 or 7000. With Ryzen 8000G, M.2_1 runs at PCIe 4.0 and M.2_2 and M.2_3 are disabled.

Will using M.2 slots slow down my graphics card?

Using M.2_2 or M.2_3 can drop the main graphics slot from x16 to x8, because they share lanes with it. ASUS's spec page and manual word the exact conditions slightly differently.

Which CPUs does it support?

AMD AM5 Ryzen 9000, 8000G and 7000 series desktop processors, up to 170 W. Some Ryzen 9000 chips (such as the 9800X3D and 9850X3D) and the PRO and F models need a minimum BIOS, so update first.

Can I update the BIOS without a CPU installed?

Yes. The board has BIOS FlashBack, which works without a CPU or operating system. Rename the downloaded BIOS file to A5557.CAP for this board with BIOSRenamer and follow the manual's procedure.

Official documents and references

This guide was written with AI assistance from the compatibility data PartsPrices verified against the manufacturer's documents. Always check your exact model and the owner's manual before buying or opening your computer.