Gigabyte Z490 upgrade guide: RAM, storage and CPU

Updated Oct. 24, 2026 · Written from this device's verified specifications

Gigabyte Z490 is a chipset family, not a single board. Models such as the Z490 AORUS ELITE (and ELITE AC), GAMING X, VISION D / VISION G, MASTER / MASTER WF and UD AC share one platform: an LGA1200 CPU socket, four DDR4 slots, two M.2 slots and six SATA ports. Rated memory speed, M.2 slot lengths, thermal guards and extras like Wi-Fi or Thunderbolt differ between models, so check the exact spec sheet for your board before ordering modules or long, heatsinked SSDs. This guide covers what fits all of them, and where they differ.

At a glance

  • 4 x DDR4 DIMM slots, up to 128 GB total
  • 2 x M.2 (NVMe or SATA) plus 6 x SATA 6 Gb/s
  • LGA1200 socket: 10th Gen Intel Core, plus 11th Gen with a BIOS update
4x DDR4 DIMM (dual channel), 128 GB max4 × DDR4 DIMM · up to 128 GB total · 5000 MT/s
2x M.2 (M key) + 6x SATA 6 Gb/s8 × SSD M.2 2242 / M.2 2260 / M.2 2280 / M.2 22110 (NVMe / SATA)
LGA1200 socket (10th/11th Gen Intel Core)LGA1200 · Core 10th gen, Core 11th gen, Core 11th gen
CPU · LGA12004 × DIMM · DDR4up to 128 GB total2x M.2 (M key) + 6x SATA 6 Gb/s8 × SSD M.2 2242 / M.2 2260 / M.2 2280 /M.2 22110 (NVMe / 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.

20202021202220232024202520262027Today11 · Release · April 2020
Filled dots: dates published by the manufacturer. Hollow dots: estimates from third-party sources.
MilestoneDate
Release
First available to buy.		 April 2020 Estimate Third-party page states "Announced on April 30, 2020… Released Apr 2020"; the precise availability date is not published, so the date is kept at month precision. Intel (manufacturer) only gives chipset-level "Launch Date: Q2'20" (https://www.intel.com/content/www/us/en/products/sku/201834/intel-z490
Source ↗

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

RAM

Every Z490 Gigabyte board we looked at has four 288-pin DDR4 DIMM slots (desktop DIMMs, not laptop SO-DIMMs). Nothing is soldered, so all four slots are yours to fill. The maximum is 32 GB per module, giving 128 GB across four slots, and 32 GB modules need 16 Gb-density chips to reach that figure. The memory runs in dual channel, so with two sticks you pair them in slots 1 and 3 or 2 and 4 rather than side by side.

Speed is where the models differ. GIGABYTE validates DDR4-5000 (XMP) on the Z490 AORUS ELITE, DDR4-4600 on the GAMING X, while the VISION D and ELITE AC manuals list DDR4-3200. The manuals appear to quote Intel's standard supported ceiling while the web pages quote overclocked validation, and the manual itself points you to GIGABYTE's website for the latest figures — so the numbers disagree depending on which document you read. In practice the CPU also caps you: Core i5, i3, Pentium and Celeron chips are limited to DDR4-2666 and below no matter what the board supports. Extreme speeds aren't guaranteed even on paper.

ECC UDIMMs physically fit but the board runs them in non-ECC mode, so don't buy this platform expecting error correction. Registered or buffered server memory isn't supported at all.

Buying tip: match the kit to your CPU. There's no point paying for a DDR4-4000 kit if you're running an i5. XMP is supported on all models, so a modest XMP kit is the sweet spot.

Buying tips

  • Buy 2 sticks instead of 4 if you want to leave room for a later upgrade.
  • Check your board's spec page — the rated XMP speed differs by model.
  • ECC memory buys you nothing here; it runs in non-ECC mode.

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Storage

You get two M.2 slots (Socket 3, M key) and six SATA 6 Gb/s ports. The M.2 slots take NVMe or SATA drives in 2242, 2260 and 2280 lengths. On the AORUS ELITE (and ELITE AC) both slots also take 22110 drives; on the GAMING X the second slot stops at 2280. Check before buying a 110 mm drive or an SSD with a tall heatsink.

All M.2 and PCIe slots are PCI Express 3.0. A Gen4 NVMe drive works, but it will run at Gen3 speed, so there's little reason to pay a premium for one. There's no documented per-drive capacity limit; larger NVMe drives work in practice, but GIGABYTE publishes a storage support list you can check. Drive bays come from your case — the board itself has none.

Two things to plan for. First, fitting a SATA M.2 drive disables one of the six SATA ports, so count your drives before you wire them up. Second, the GAMING X ships with only one M.2 thermal guard, and an uncooled NVMe drive can throttle under load in the bare slot. RAID 0/1/5/10 via Intel RST is available if you want to combine drives.

Buying tip: pick NVMe over SATA M.2 if you still need all six SATA ports. If your second slot is 2280-only, skip the long 22110 drives.

Buying tips

  • NVMe M.2 keeps all six SATA ports free; SATA M.2 costs you one.
  • Gen3 drives give you the same real-world speed as Gen4 here.
  • Check the second slot's length limit on your model before buying.

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CPU

The socket is LGA1200 and the CPU is replaceable. 10th Gen Intel Core i9/i7/i5/i3, Pentium and Celeron (Comet Lake) are supported natively. 11th Gen Core (Rocket Lake) also works, but only after a BIOS update — GIGABYTE marks it with an asterisk on the spec page and directs you to its CPU Support List.

There's no documented maximum CPU TDP. The platform accepts 125 W K-series parts, but unlocked i9 chips can pull around 250 W under turbo, and the budget boards (GAMING X, UD) have marginal power delivery for that. If you're eyeing an unlocked i9, favour the higher-end models.

Two honest limits to know before you shop. This is a dead-end socket: 12th Gen and later Intel CPUs need an LGA1700 board, so the CPUs above are the whole upgrade path. And while some Z490 boards were marketed as PCIe 4.0 ready, Intel never enabled PCIe 4.0 on this platform, even with an 11th Gen chip — everything stays at Gen3.

Buying tip: if you're moving to an 11th Gen CPU on an existing board, make sure the BIOS is updated first (or buy from a seller who confirms the revision). With old stock BIOS and no supported way to boot, you may need a 10th Gen chip to perform the update.

Buying tips

  • Check GIGABYTE's CPU Support List for your exact board revision.
  • An unlocked i9 is a stretch for the budget boards' power delivery.
  • This socket ends at 11th Gen — there's no later CPU upgrade path.

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How to upgrade

Before you start

  • Back up anything important before you open the case.
  • Shut down, switch the PSU off and unplug the power cable.
  • Ground yourself — touch the case or use an anti-static strap — before handling parts.
  • Open the case and install the part. For RAM, the DIMM latches at each end click shut when a module is seated; for an M.2 drive, the drive slots into its connector and is fastened at the far end (and, where fitted, the thermal guard goes back on top); for a CPU, the socket's retaining bracket holds it in place. For the exact disassembly of your model, follow the owner's manual.
  • Close the case, reconnect the power and start up.
  • Check in the BIOS/firmware that the new RAM, drive or CPU is detected and running at the speed you expect.

Steps

  1. 1. Back up your data
    Make a backup of anything you care about before you change hardware.
  2. 2. Power off and unplug
    Shut the PC down fully, switch the PSU off and unplug the mains cable.
  3. 3. Ground yourself
    Discharge static by touching the case or wearing an anti-static strap before touching components.
  4. 4. Open the case and install
    Fit the RAM, SSD or CPU in its slot. Follow your model's owner's manual for exact disassembly — panel removal, bracket and screw locations vary. If you're installing an 11th Gen CPU on an existing board, the BIOS update comes first.
  5. 5. Close up and boot
    Refit any guards or heatsinks, close the case and reconnect the power.
  6. 6. Verify in the BIOS
    Open the BIOS and confirm the new memory total and speed, the drive, or the CPU model is recognised.

Good to know

  • The rated memory speed depends on the exact board and which document you read: GIGABYTE's web pages quote overclocked (XMP) validation while the manuals list lower standard figures. Check your model's spec page and consider the speed unconfirmed beyond the standard figures.
  • No maximum CPU TDP is documented for any of these boards.

Frequently asked questions

How much RAM can a Gigabyte Z490 board take?

Four DDR4 DIMM slots, 32 GB per module, 128 GB in total. 32 GB modules must use 16 Gb-density chips to reach that figure.

Does a Gigabyte Z490 support 11th Gen Intel CPUs?

Yes, but with a BIOS update. 10th Gen Core/Pentium/Celeron work out of the box; Rocket Lake needs the newer firmware, so check GIGABYTE's CPU Support List for your board revision first.

Does Gigabyte Z490 support PCIe 4.0 SSDs?

A Gen4 drive fits and works, but all M.2 slots run at PCIe 3.0, so you'll get Gen3 speeds. Intel never enabled PCIe 4.0 on the Z490 platform.

Can I use ECC or server memory in a Gigabyte Z490?

ECC UDIMMs fit but run in non-ECC mode, so you get no error correction. Registered/buffered RDIMMs aren't supported at all.

Will a SATA M.2 SSD use up one of my SATA ports?

Yes. Populating an M.2 slot with a SATA drive disables one of the six SATA 6 Gb/s ports. An NVMe M.2 drive leaves all six free.

What length M.2 SSDs fit a Gigabyte Z490?

2242, 2260 and 2280 in both slots. The AORUS ELITE also takes 22110 drives in both slots, while the GAMING X second slot stops at 2280. Check your model's spec page before buying a long or heatsinked drive.

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.