Best LGA1155 Motherboards in 2026: 3 Picks Compared on Specs
The OLurkthu Compact B75 Micro ATX board is our top pick among the three LGA1155 motherboards in this guide. It is the only pick whose listing states all of the features buyers most often need from an 1155 board: USB 3.0, SATA 3, and a PCIe x16 slot, in a micro ATX size that fits most cases. All three picks use Intel's B75 chipset for 2nd and 3rd generation Core processors, chosen from their stated specifications, with live prices on the page.
3 picks from 0 motherboards that match this guide with a price we can quote today. The prices below are current and each carries its read time.
Quick picks
The best fit for you
- For a compact or small-case build: Choose the Wisoqu B75S if you want the only mini-ITX board in the pool and a smaller footprint for tight cases. It states dual channel DDR3 support. See pick 3
- For a standard desktop upgrade: The OLurkthu B75 micro ATX board states the fullest feature set in the pool, including USB 3.0, SATA 3, and a PCIe x16 slot, which suits a typical mid-tower rebuild. See pick 1
- For a budget office or home build: The Raxmolo B75 is a micro ATX board whose listing states support for Intel i3, i5, and i7 processors of the 2nd and 3rd generation. See pick 2
Our 3 picks
1 Best overall
OLurkthu Compact B75 Micro ATX Board with DDR3 USB3.0 SATA3 and PCIe x16
- Socket
- LGA1155
- Form factor
- mATX
This is the only pick whose seller states a full set of everyday features: USB 3.0, SATA 3, and a PCIe x16 slot, on a micro ATX board. Compared with the other two picks, its listing documents the most expansion and interface details.
Pros
- Micro ATX form factor for wide case compatibility
- States USB 3.0 and SATA 3 support
- States a PCIe x16 slot
Cons
- Memory slot count and supported speeds not stated by the seller
- No M.2 slot stated
Good fit if
- A builder reusing a spare 2nd or 3rd gen Core CPU in a standard case
- A system needing a stated PCIe x16 slot for a discrete GPU
Skip if
- You need a board smaller than micro ATX for a compact case
- You want documented dual channel memory support
Verdict: The OLurkthu B75 is the most fully documented micro ATX choice among the three picks.
2 Best documented processor support
Raxmolo Desktop Gaming PC Mainboard B75 Motherboard LGA1155 DDR3 Support
- Socket
- LGA1155
- Form factor
- mATX
Its listing explicitly states support for Intel i3, i5, and i7 2nd and 3rd generation processors on the LGA1155 socket, the clearest processor compatibility claim in the pool. Like the OLurkthu, it is a micro ATX board with SATA 3 and USB 3.0 stated.
Pros
- States support for Intel i3, i5, and i7 2nd and 3rd gen processors
- Micro ATX form factor
- SATA 3 and USB 3.0 support stated
Cons
- No PCIe x16 slot stated
- Memory configuration not stated by the seller
- No M.2 slot stated
Good fit if
- Anyone pairing the motherboard with a known 2nd or 3rd gen Core chip
- A simple desktop rebuild in a standard micro ATX case
Skip if
- You need a stated PCIe x16 slot for a discrete graphics card
- You want the smallest form factor available in this pool
Verdict: The Raxmolo B75 is the pick with the clearest stated processor support for 2nd and 3rd generation Intel Core chips.
3 Best compact mini-ITX pick
This is the only mini-ITX board in the pool, so it is the default choice for small cases and low-profile builds. Its listing states dual channel DDR3 memory support, which the other two picks do not document.
Pros
- Mini-ITX form factor, the smallest in the pool
- States dual channel DDR3 support
- LGA1155 socket for 2nd and 3rd gen Core processors
Cons
- USB 3.0 and SATA 3 support not stated by the seller
- No PCIe x16 slot stated
- Mini-ITX footprint limits expansion compared with the micro ATX picks
Good fit if
- A compact or HTPC-style build in a small case
- A build that appreciates the stated dual channel memory support
Skip if
- You need documented USB 3.0 or SATA 3 ports
- You plan heavy expansion with several PCIe cards
Verdict: The Wisoqu B75S is the only mini-ITX option in the pool and the pick for a compact LGA1155 build.
Specifications side by side
| # | Motherboard | Socket | Form factor | Memory type |
|---|---|---|---|---|
| 1 | OLurkthu Compact B75 Micro ATX Board with DDR3 USB3.0 SATA3 and PCIe x16 | LGA1155 | mATX | not stated |
| 2 | Raxmolo Desktop Gaming PC Mainboard B75 Motherboard LGA1155 DDR3 Support | LGA1155 | mATX | not stated |
| 3 | Wisoqu B75S Gaming Motherboard | LGA1155 | ITX | not stated |
How the picks were chosen
The pool for this guide holds three LGA1155 motherboards, every board that matched the socket filter when the list was built, so all three appear here. Each board was judged on the specifications stated by the seller: socket, form factor, memory support, USB and storage interfaces, and expansion slots. Two picks use the micro ATX form factor and one uses mini-ITX. No motherboard in this guide was tested, handled, or benchmarked; picks are chosen from stated specifications and the maker's published information. Prices shown on the page are live, read from each store listing when the page loads, so they may change. Where a specification is missing from a listing, it is marked as not stated by the seller rather than guessed.
Picking the right one for you
Check the socket and processor generation
LGA1155 is the socket used by Intel 2nd generation (Sandy Bridge) and 3rd generation (Ivy Bridge) Core desktop processors, and all three picks in this pool use it. If you already own a chip from those generations, any of these boards is a candidate. If you are buying a processor separately, confirm it is an LGA1155 part, because later Core generations use different sockets. Intel's processor naming page explains how the generation and model numbers work for these families.
Know what the B75 chipset offers
All three picks are built on Intel's B75 chipset, a mainstream desktop chipset from the LGA1155 era, named in each listing. Intel's chipset product pages describe the company's range of desktop chipsets, which include the platforms from this period. Boards of this generation use legacy interfaces such as DDR3 memory rather than current DDR5; two of the three picks state USB 3.0 and SATA 3 support, and one states a PCIe x16 slot.
Match the form factor to your case
Two of the three picks use the micro ATX form factor, and one uses mini-ITX. Micro ATX is the larger of the two and fits typical mid-tower cases, while mini-ITX suits compact cases and small builds. Measure your case before choosing: a micro ATX board will not fit a case built only for mini-ITX, and a mini-ITX board leaves a larger case mostly empty. The Wisoqu is the only mini-ITX pick in the pool.
Memory and storage: what the listings state
All three listings name DDR3 memory, so these boards will not accept DDR4 or DDR5 modules. Only the Wisoqu pick states dual channel memory support. For storage, two of the three picks state SATA 3 and USB 3.0 support, and none of them states an M.2 slot. If a feature is not listed, treat it as not stated by the seller and confirm it before you buy.
Plan the operating system before you build
Windows 11 requires a 64-bit processor, 4 GB of RAM, UEFI firmware with Secure Boot capability, and a Trusted Platform Module version 2.0, according to Microsoft's system requirements. The sellers of these LGA1155 boards do not state that the boards include UEFI or TPM 2.0, and boards from this era commonly predate those requirements. If you plan to run Windows 11, confirm these features with the seller first; otherwise, plan for an older operating system.
Questions
What processors fit an LGA1155 motherboard?
An LGA1155 board works with Intel 2nd generation (Sandy Bridge) and 3rd generation (Ivy Bridge) desktop Core processors. The Raxmolo pick in this pool states support for i3, i5, and i7 chips of both generations. Newer Core generations use different sockets, so check the socket of any processor you already own before choosing a board in this group.
Are these boards still worth buying in 2026?
They are a legacy platform, useful mainly when you already have a 2nd or 3rd generation Core processor and DDR3 memory to reuse. All three picks use the B75 chipset and DDR3, and none states an M.2 slot. If you are starting a build from scratch with modern parts, a newer socket and DDR4 or DDR5 platform will serve you better.
Can these motherboards run Windows 11?
Microsoft lists UEFI firmware with Secure Boot capability and TPM version 2.0 among the minimum requirements for Windows 11. The sellers of these LGA1155 boards do not state whether the boards include UEFI or TPM 2.0, and boards from this generation often predate them. Check with the seller before buying if Windows 11 is your target; otherwise, plan for an older operating system.
What is the difference between micro ATX and mini-ITX?
Micro ATX is the larger of the two form factors and fits standard mid-tower cases, while mini-ITX is built for compact cases and small builds. In this pool, the OLurkthu and Raxmolo picks are micro ATX, and the Wisoqu is mini-ITX. A micro ATX board will not fit a case designed only for mini-ITX.
Do these boards support DDR4 memory?
No. All three picks are listed with DDR3 memory, so they are not compatible with DDR4 or DDR5 modules. The Wisoqu listing additionally states dual channel DDR3 support. If you plan to reuse memory from an older build, confirm the module type and speed with the seller, since the listings do not specify DDR3 speeds.
Revision notes
- : First published.