Intel Core i9-11900T socket: LGA 1200
The Intel Core i9-11900T uses the LGA 1200 socket. It is a locked 35 W 8-core Rocket Lake processor for compact desktops, with DDR4 memory throughout.
- Socket
- LGA 1200
- Launched
- March 2021
- Cores and threads
- 8 and 16
- Base power
- 35 W
- Codename
- Rocket Lake
- Segment
- Desktop
- Family
- Intel Core i9
- Clocks
- 1.5 / 4.9 GHz
Intel Core i9-11900T specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Cypress Cove |
| Clocks | 1.5 GHz base, up to 4.9 GHz (Turbo Boost Max 3.0) |
| Cache | 16 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 35 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4 up to 3200 MT/s, two channels, up to 128 GB |
| PCI Express | 20 lanes from the CPU: PCIe 4.0 x16 plus PCIe 4.0 x4 |
| Integrated graphics | Intel UHD Graphics 750 (32 execution units, up to 1.30 GHz) |
| Multiplier | Locked |
| Package | FCLGA1200 |
| Launch price | $483 (Intel RCP) |
Motherboard and chipset compatibility
Intel Core i9-11900T needs a motherboard with a LGA 1200 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 500 series | Z590, H570, B560, H510, Q570, W580 | Works out of the box |
| 400 series: Z490, H470, Q470, W480 | Z490, H470, Q470, W480 | Needs a BIOS update Needs a BIOS update from the board maker. PCIe 4.0 depends on how the board is wired. |
| 400 series: B460, H410 | B460, H410 | Not supported |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1200.
Recommended GPU pairing
| Recommended tier | Entry 1080p |
|---|---|
| Example GPUs | GeForce GTX 1660 Super, Radeon RX 6500 XT |
| Target resolution | 1080p medium settings |
Eight cores with boost to 4.9 GHz, 20 PCIe 4.0 lanes and DDR4 line up with low power 1080p cards from its era. A faster card still works and the balance shifts with game, settings and resolution.
This is a rough match for a new build at the stated resolution, not a limit. A faster card still works and helps at higher resolutions or in games that load the GPU more than the CPU. A slower card is fine for lighter games and office use. The exact balance shifts with the game, the settings and the resolution, so no percentage is given.
LGA 1200 at a glance
| Type | LGA, 1,200 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | April 2020 |
| Memory | DDR4 only |
| Cooler mounting holes | 75 × 75 mm |
What the Core i9-11900T is
The Core i9-11900T is an 8-core desktop processor that Intel released in March 2021 with the low power Rocket Lake range. Its Cypress Cove cores run 1.5 GHz base to 4.9 GHz turbo with Hyper-Threading for 16 threads. Cache is 16 MB of Intel Smart Cache.
The chip holds the top single thread burst of the T range despite the 35 W envelope. The low base clock keeps idle and sustained heat down, while Turbo Boost Max 3.0 lifts favored cores for short tasks. The 14 nm process and locked multiplier keep the focus on quiet operation.
Intel UHD Graphics 750 handle display output, with 32 execution units at 350 MHz base and up to 1.30 GHz boost. The multiplier is locked. The launch price was $483 (Intel RCP). The socket package is FCLGA1200 at 37.5 × 37.5 mm.
Socket and motherboard compatibility
The 11900T fits the LGA 1200 socket. Boards with 500 series chipsets (Z590, H570, B560, H510, Q570, W580) accept it with the shipping BIOS. Among 400 series boards, only Z490, H470, Q470 and W480 can run it, and only after a BIOS update. B460 and H410 boards never support it.
Compact premium desktops pair the chip with B560 or H570 small boards for memory tuning with low heat. The Lenovo ThinkCentre M90q Gen 2 specifications list the 11900T at 1.5 GHz to 4.9 GHz with UHD 750 graphics as a 35 W option. H510 boards work when fewer ports are needed.
Check power and cooler limits when swapping from a 65 W i9. The T part is built to hold lower sustained clocks, so stock limits suit it best.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 3200 MT/s only. Two channels carry up to 128 GB. Compact i9 builds often used 2 by 8 GB DDR4-3200, since dual channel feeds both CPU cores and integrated graphics.
The CPU supplies 20 PCIe 4.0 lanes: x16 for graphics plus x4 for storage. Small premium systems without a discrete card still gain from the x4 SSD link when the board wires it for Gen4. The board specifications state which slots reach full speed.
At 35 W base, a low profile cooler with airflow suffices. Mounting uses the 75 mm LGA 1200 pattern from the CPU cooler compatibility by socket guide. A larger cooler lowers noise under long loads but is not required for office use.
Upgrade paths
Against the Intel Core i5-11400, the 11900T adds two cores, more cache and higher turbo in a lower power envelope. The i5 part suits value builds at 65 W, while this i9 T part suits quiet premium compacts that still want burst speed. Both share chipset rules and DDR4 limits.
Moving to LGA 1700 needs a new board, new memory for DDR5 builds, and a new cooler bracket. The 11900T fits a quiet premium office PC, a small studio box, or a living room system with an entry card.
For used buyers, the i9 T part makes sense when the chassis limits heat but single thread bursts still matter. When cooling is ample, the 65 W 11900 gives more sustained speed on the same board.
Frequently asked questions
What socket does the Intel Core i9-11900T use?
It uses LGA 1200, written FCLGA1200 in Intel documents.
Does the 11900T run in a B460 motherboard?
No. B460 and H410 boards never support Rocket Lake. B560 boards accept it from the start, while Z490 needs a BIOS update.
What memory does the Intel Core i9-11900T support?
DDR4 up to 3200 MT/s in two channels, up to 128 GB. No DDR5 on this platform.
What cooling does the 11900T need?
At 35 W base a low profile cooler with airflow suffices. The mount is the 75 mm LGA 1200 pattern.
What is the difference between the 11900T and the 11900?
The 11900T is an 8-core 35 W part with 4.9 GHz turbo for small cases, while the 11900 is an 8-core 65 W part with higher sustained clocks. Both share cache and chipset rules.
Sources and verification
- Intel Core i9-11900T specifications (Intel)
- ThinkCentre M90q Gen 2 Spec (Lenovo, lists 11900T 1.5 to 4.9 GHz)
Facts last checked against these sources on . Page last edited on .