Lenovo Legion Tower 5 Gen 10 30L (AMD) RTX 5070 Ti Upgrade Guide

Lifecycle and support

A current model: sold new and supported. Support is planned until March 28, 2031.

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

RAM: four DDR5 UDIMM slots, 32GB listed maximum

The Legion Tower 5 Gen 10 30L (AMD) has four full-size DDR5 desktop DIMM slots (UDIMM). No memory is soldered to the board, so all of it can be replaced or added to. The memory is non-ECC and unbuffered, so registered or ECC server memory and laptop SO-DIMMs are not the right type.

Lenovo lists up to 32GB of DDR5-5600 across the four slots. It says this is based on tests with current Lenovo memory options. That is probably a validation ceiling rather than a hard limit, but Lenovo doesn't say so, and larger kits are not officially supported. Lenovo doesn't state a maximum size per module.

Speed is capped at DDR5-5600. Lenovo warns the memory may run at 5200 MT/s, 3600 MT/s or another speed depending on AMD's memory support, especially when all four slots are filled.

Buying tips

• Buy non-ECC DDR5 desktop DIMMs (UDIMM) only.
• Two modules is the safer choice for keeping speed up; filling all four slots may lower it.
• Staying within 32GB total keeps you inside what Lenovo officially lists.
• Buy a matched kit rather than mixing modules from different sets.

Storage: three M.2 NVMe slots plus an optional 3.5in bay

There are four M.2 slots in total, but one is used by the Wi-Fi card, leaving three for SSDs. Lenovo lists only M.2 2280 PCIe 4.0 x4 NVMe drives, up to 2TB each. The 2TB figure is a tested size and not necessarily a hard cap. Other lengths are not listed.

Lenovo's listing doesn't include PCIe 5.0 SSDs for this AMD model. A Gen 5 drive would most likely work at Gen 4 speed, but that's our expectation rather than something Lenovo states, so a Gen 4 drive is the sensible buy.

The machine also lists one 3.5in SATA bay for a 7.2K RPM hard drive up to 2TB. It's marked optional, so it may be empty on your unit and you may need to source a bracket and SATA cabling. No 2.5in bays are listed. The owner's manual has the exact slot locations and bay requirements.

Buying tips

• Look for M.2 2280 NVMe drives rated PCIe 4.0 x4; paying extra for Gen 5 speed likely won't help.
• Don't count on a 2.5in drive bay; none is listed.
• For the 3.5in bay, check the user guide first and budget for a bracket and SATA cable if your unit has none.
• Lenovo lists HDDs up to 2TB in that bay.

How to upgrade

Before you start

• Lenovo's spec data is for the AMD 30AGB10 family and isn't confirmed for the exact 90YJ001LUS configuration, so open the case and check what your unit actually contains.
• Back up anything important before touching drives.
• Have the owner's manual open for slot locations and exact disassembly steps.
• Use a Phillips screwdriver and work on a clean, non-carpeted surface.

Steps

1. Back up your data
   Copy important files to an external drive or cloud storage, especially if you're replacing or moving an SSD.
2. Power off and unplug
   Shut the PC down fully, switch off the power supply if it has a switch, and unplug the power cable and all peripherals. Hold the power button for a few seconds to drain leftover charge.
3. Ground yourself
   Touch bare metal on the case before handling parts, or use an anti-static wrist strap. Hold memory and SSDs by their edges.
4. Open the case
   Follow the owner's manual to remove the side panel and find the memory slots, M.2 slots or 3.5in bay. The manual lists memory modules and M.2 drives as replaceable parts.
5. Install the part
   For RAM, line up the notch and press the module firmly into the slot until it is seated; two modules is the safer choice for speed. For an M.2 SSD, use one of the three SSD slots, not the one taken by the Wi-Fi card, and secure the drive as the manual shows. For a 3.5in HDD, fit it to the bay with any bracket and connect SATA data and power cables.
6. Close the case and reconnect
   Refit the side panel, reconnect the cables and power on.
7. Check that the system sees the part
   Enter the BIOS/firmware setup to confirm the new memory size or drive is detected. A new SSD will also need to be initialized and formatted in your operating system. If memory runs slower than expected, that may be normal, especially with all four slots filled.

Good to know

• Lenovo's spec data covers the AMD 30AGB10 family and isn't confirmed for the specific 90YJ001LUS configuration.
• Treat 32GB as the supported RAM maximum. Lenovo's Intel-based Legion Tower 5 lists a higher figure, which suggests the AMD limit is a validation ceiling, but Lenovo doesn't say so for this model.
• Lenovo's PSREF doesn't mention a card reader, 2.5in bays or proprietary expansion slots for this model. Confirm against the user guide or your exact unit before relying on any of them.
• The 3.5in bay is listed as optional; bracket and SATA cabling requirements aren't spelled out, so check the user guide.
• CPU upgrade support is unconfirmed: the socket and supported replacement processors aren't named in the documents we checked.

Frequently asked questions

How much RAM can the Legion Tower 5 Gen 10 30L (AMD) take?

Lenovo lists up to 32GB of DDR5-5600 across four UDIMM slots. That is based on tested Lenovo modules and is probably a validation limit rather than a hard cap, but larger kits aren't officially supported.

What type of RAM does it use?

Non-ECC, unbuffered DDR5 desktop DIMMs (UDIMM). Don't buy registered or ECC memory, or laptop SO-DIMMs.

Will RAM run at full speed with all four slots filled?

Not necessarily. The top listed speed is 5600 MT/s, but Lenovo notes it may run at 5200 or 3600 MT/s depending on AMD's memory support. Two modules is the safer choice for speed.

Does it support PCIe 5.0 SSDs?

Lenovo lists only PCIe 4.0 x4 NVMe SSDs for this AMD model. A Gen 5 drive would most likely run at Gen 4 speed, but that isn't confirmed.

How many SSDs can I install, and how big can they be?

Three M.2 2280 NVMe SSDs, listed up to 2TB each. A fourth M.2 slot is used by the Wi-Fi card. The 2TB figure is a tested size, not necessarily a hard cap.

Can I upgrade the CPU?

We can't confirm this. Lenovo's documents list the AMD model with CPU options up to a Ryzen 9 7950X3D, but they don't name the socket or list supported replacement CPUs. Check with Lenovo support before buying a processor.

Official documents and references

• Lenovo PSREF: Legion Tower 5 30AGB10 (AMD)
  Memory, storage and expansion specifications
• PDF Legion Tower 5 30AGB10 spec sheet (PDF)
  DDR5, M.2 PCIe 4.0 x4 and capacity details
• PDF Legion Tower 5 30AGB10 spec sheet (PDF, alternate version)
  Non-ECC memory details
• Lenovo Legion Tower 5 user guide
  Replaceable parts and disassembly guidance
• Lenovo US product page for the RTX 5070 Ti configuration
  Configuration overview