Intel Xeon E-2146G socket: LGA 1151
The Intel Xeon E-2146G uses the LGA 1151 socket, second revision. It runs on C242 and C246 workstation boards as an 80 W six core with twelve threads and P630 graphics.
- Socket
- LGA 1151
- Launched
- July 12, 2018
- Cores and threads
- 6 and 12
- Base power
- 80 W
- Codename
- Coffee Lake-S WS
- Segment
- Workstation
- Family
- Intel Xeon E
- Clocks
- 3.5 / 4.5 GHz
Intel Xeon E-2146G specifications
| Cores | 6 |
|---|---|
| Threads | 12 |
| Core architecture | Coffee Lake-S WS |
| Clocks | 3.5 GHz base, up to 4.5 GHz turbo |
| Cache | 12 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 80 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4-2666, two channels, up to 128 GB |
| PCI Express | PCIe 3.0, 16 lanes from the CPU |
| Integrated graphics | Intel UHD Graphics P630 (350 MHz base, up to 1.15 GHz) |
| Multiplier | Locked |
| ECC memory | Yes |
| Package | FCLGA1151 |
Motherboard and chipset compatibility
Intel Xeon E-2146G needs a motherboard with a LGA 1151 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C240 series: C242 and C246 | C246, C242 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1151.
LGA 1151 at a glance
| Type | LGA, 1,151 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | August 2015 |
| Memory | DDR4 on most boards (some early boards use DDR3L). DDR4 only on the second revision |
| Cooler mounting holes | 75 × 75 mm |
What the Xeon E-2146G is
The Xeon E-2146G is a six core, twelve thread workstation processor with a 3.5 GHz base and up to 4.5 GHz turbo. It carries 12 MB of Smart Cache and an 80 W TDP on the 14 nm process. Intel launched it on July 12, 2018 as the balanced six core of the E-2100 stack.
It pairs the highest six core base below the 95 W flagship with full Hyper-Threading for rendering beside CAD. UHD Graphics P630 runs from 350 MHz to 1.15 GHz for setup displays. The multiplier is locked at 35 times the base clock.
ECC memory support corrects single bit errors during long jobs. Boxed and tray supply both exist, with boxed parts including a thermal solution. Launch lists agree near $311 tray and $317 box, with no current ARK figure, so pricing is omitted here.
Socket and motherboard compatibility
The E-2146G fits LGA 1151 revision 2 on workstation boards with the C242 and C246 chipsets. Consumer 300 series boards are not the target, since ECC wiring lives on the workstation boards. Check the board maker CPU list for the exact E-2146G before ordering.
It does not fit 100 or 200 series boards, which are revision 1 for 6th and 7th Gen chips. Boards with display outputs suit this G SKU directly. A discrete workstation card still fits the x16 slot where GPU compute is needed.
Boards sold after mid 2018 accept it with the shipping BIOS where the maker lists the part. The Intel Xeon E-2126G is the six thread sibling on the same boards where threads are licensed.
Memory, PCIe and cooling
Memory support is DDR4-2666 in two channels up to 128 GB, with ECC correcting single bit errors. Two matched ECC UDIMMs give dual channel speed with error cover. The P630 shares system memory, so dual channel mode helps display smoothness.
PCI Express arrives as version 3.0 with 16 lanes from the CPU for graphics and storage. A workstation card and two NVMe drives fit the lane budget of a mid tower. Cooling uses the shared 75 mm LGA 1151 pattern at 80 W.
Upgrade paths
On the same socket the step up is the 95 W E-2186G where sustained clocks matter, keeping the board and ECC DDR4. The E-2146G keeps its place where 80 W covers mixed CAD and rendering.
Moving past LGA 1151 means a new board on a current workstation platform. Owners usually add ECC memory or a faster workstation card before replacing the processor.
Frequently asked questions
What socket does the Xeon E-2146G use?
It uses LGA 1151 revision 2 on C242 and C246 workstation boards. Consumer 300 series boards are not the target.
How many cores does the E-2146G have?
Six cores with Hyper-Threading give twelve threads at 3.5 GHz base with up to 4.5 GHz turbo, with 12 MB of cache at 80 W.
Which graphics does the E-2146G include?
UHD Graphics P630 from 350 MHz to 1.15 GHz for setup displays and triple outputs without a separate card.
What memory does the E-2146G support?
DDR4-2666 in two channels up to 128 GB with ECC for error cover on long jobs.
How does the E-2146G differ from the E-2126G?
The Intel Xeon E-2126G runs six threads without Hyper-Threading on the same boards. The E-2146G doubles threads for multitasking.
Sources and verification
Facts last checked against these sources on . Page last edited on .