Lenovo ThinkCentre M90s Gen 4 Intel i7-13700/16GB/512GB SSD SFF PC

General

This Configuration — From the Distributor Build Sheet for 12HS000HSG

Chassis and Platform — From Lenovo PSREF

A note on this listing's web address

Our store title is correct — this is a ThinkCentre M90s Gen 4, machine type 12HS, confirmed against Lenovo's own product database. But the listing's web address still contains m70s-gen-4, which is a different machine with DDR4 memory, no discrete graphics option and slower rear USB. The link works and the product is right; the address is a leftover. We have flagged it for correction. When you compare quotes, quote the machine type — it is the one identifier nobody can garble.

What to actually think about when buying a small-form-factor desktop

The processor is rarely what decides whether an SFF machine still suits you in three years. Three other things usually do, and all three are fixed at the point of order: how many memory slots the board has and how many are already occupied, whether there is a free drive bay or M.2 slot, and what will physically fit in a low-profile card slot. The tables below give Lenovo's full option list for the machine type and the distributor's build sheet for this exact unit, side by side, so you can see which of them you are getting.

M90s against M70s in the Gen 4 chassis

They share a chassis and almost nothing else on the board. This machine gives you DDR5 rather than DDR4, two M.2 SSD positions rather than one, PCIe 4.0 x16 slots where the M70s has one PCIe 4.0 and two PCIe 3.0 x1, rear USB at 5 Gbps where the M70s gives you USB 2.0, a published AMD Radeon RX 6400 discrete option where the M70s has none, and a TPM that adds FIPS 140-2 certification. It also drops the courier and carry-in warranty tier — Lenovo's base options here are onsite only.

How much memory can it take, and is a slot free?

Lenovo publishes four DDR5 UDIMM slots and a 128 GB ceiling for this machine type. Whether the memory fitted to this unit occupies one slot or both is not published by Lenovo and not stated on the build sheet. It is the most-asked question about a business desktop, because it decides whether a memory upgrade is a cheap addition or a throw-away-and-replace job. Ask us and we will confirm the module configuration before you order.

M-series against neo, in three lines

Lenovo runs two ThinkCentre tiers and the differences are consistent. The M-series carries an Intel Ethernet controller with vPro support, a discrete TPM, and a 3-year limited onsite base warranty option. The neo series carries a Realtek controller, and its books publish 1-year terms only. On the Tiny machines the neo also uses a firmware TPM integrated in the SoC rather than a discrete chip. None of that shows up in a processor comparison, and all of it matters to whoever has to manage the fleet.

A note on the power supply rating

Lenovo publishes a bare efficiency percentage for every ThinkCentre power supply — 85%, 89%, 90% or 92% — and does not assign an 80 PLUS Bronze, Silver or Gold tier to them. You will see 80 PLUS claims on resellers' ThinkCentre pages. They are not Lenovo's, so they are not on ours.

About the warranty, precisely

The distributor build sheet for this part number states no warranty term at all. The previous version of this listing carried a three-year heading anyway. We have taken the number off rather than repeat a figure nothing on file supports — a warranty term is the one specification a customer cannot verify for themselves after delivery, so it is the last place to guess.

What Lenovo publishes for this machine type is onsite terms only — a 1-year limited onsite option and a 3-year limited onsite option. There is no courier or carry-in base tier at all, which is itself a difference worth knowing: every base configuration of this machine is an onsite one. A three-year machine is therefore genuinely orderable — it is simply not what this build sheet records, so we will not print it as though it were.

Lenovo also marks base warranty on this machine type so that only one term can be configured per model, and notes that warranty upgrades may be bundled into particular models.

Every unit SourceIT sells carries local Singapore warranty support and a GST invoice, and we will confirm the exact term, service level and start date in writing before you order. If you need a specific term, say so when you ask for a quote — on this machine type it is chosen at the point of order and, on Lenovo's own note, cannot be added afterwards.

In the box, per the distributor build sheet and Lenovo PSREF:

• Lenovo ThinkCentre M90s Gen 4 desktop, built to the configuration above
• USB keyboard and mouse
• Internal speaker
• 2.5-inch drive bracket kit
• Power cable
• Quick start guide and safety documentation

Lenovo does not publish a carton contents list per part number. The list above reflects the build sheet for this unit, which is the only per-SKU source there is.

Lenovo ThinkCentre Desktop Ordering Information

• Lenovo PSREF — ThinkCentre M90s Gen 4 specification book (PDF)

PSREF is Lenovo's own Product Specifications Reference. It publishes per machine type rather than per part number, so this SKU does not appear inside the PDF itself — the PDF is the authority on the chassis, the platform and the option lists, and the distributor build sheet is the authority on which options this unit actually carries.

Is this an M70s or an M90s?

An M90s. Lenovo's product database returns M90s Gen 4 Desktop (ThinkCentre), Type 12HS for this part number, confirmed across three regional lookups. Our title is right; only the listing's web address still says m70s, and we have flagged it for correction.

Is the memory DDR4 or DDR5?

DDR5. The M90s Gen 4 uses four DDR5 UDIMM slots to a 128 GB ceiling, at DDR5-3600, 4000 or 4400. The old page prose said DDR4, contradicting the build sheet on the same page. DDR4 is the M70s Gen 4.

The build sheet says the i7-13700 is 6-core. Is that right?

No. The line reads “6C (8P + 8E)” and 8 plus 8 is not 6. Lenovo gives the i7-13700 as 16 cores (8 performance and 8 efficient) with 24 threads. We have flagged the line to the distributor.

Can I put a graphics card in it?

Yes, within limits. Unlike the M70s Gen 4, Lenovo publishes a discrete option for this machine type: the AMD Radeon RX 6400, 4 GB GDDR6. The slots are low-profile, so card choice is constrained by physical size as much as by power.

How much memory can it take?

Lenovo publishes the ceiling for the machine type in the platform table below. Whether the memory in this unit sits in one slot or two is not published by Lenovo and not stated on the build sheet — ask us and we will confirm before you order, because it decides whether an upgrade means adding a module or replacing one.

Is the power supply 80 PLUS certified?

No. Lenovo publishes a bare efficiency percentage for ThinkCentre power supplies and assigns no 80 PLUS tier to them. Any 80 PLUS Bronze or Gold claim you see on a ThinkCentre listing did not come from Lenovo.

What warranty does it come with?

The build sheet for this part number does not state one, so this page does not print a duration. Lenovo publishes onsite terms only for this machine type — 1-year limited onsite and 3-year limited onsite, with no courier or carry-in base tier at all — so a three-year onsite machine is genuinely orderable, it is just not what this particular build records. Every unit SourceIT sells carries local Singapore warranty support and a GST invoice, and we will confirm the exact term in writing before you order.