Intel Xeon E5-2628 v3 socket: LGA 2011-v3
The Intel Xeon E5-2628 v3 uses the LGA 2011-v3 socket. It is an eight core Haswell-EP server part with 16 threads from 2.5 GHz to 3.0 GHz at 85 W with 20 MB of cache.
- Socket
- LGA 2011-v3
- Launched
- September 2014
- Cores and threads
- 8 and 16
- Base power
- 85 W
- Codename
- Haswell-EP
- Segment
- Server
- Family
- Intel Xeon E5
- Clocks
- 2.5 / 3.0 GHz
Intel Xeon E5-2628 v3 specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Haswell-EP cores on 22 nm |
| Clocks | 2.5 GHz base, up to 3.0 GHz turbo |
| Cache | 20 MB Smart Cache |
| Processor base power (TDP) | 85 W |
| Manufacturing process | 22 nm |
| Memory support | DDR4, four channels, ECC |
| PCI Express | PCIe 3.0, 40 lanes |
| Integrated graphics | None (server board graphics) |
| Multiplier | Locked |
| Package | FCLGA2011-3 |
Motherboard and chipset compatibility
Intel Xeon E5-2628 v3 needs a motherboard with a LGA 2011-v3 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C612 series | C612 | 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 2011-v3.
LGA 2011-v3 at a glance
| Type | LGA, 2,011 contacts |
|---|---|
| Package size | 52.5 × 45 mm |
| Introduced | August 2014 |
| Memory | DDR4-2400, four channels, up to 128 GB |
| Cooler mounting holes | 80 × 80 mm |
What the Xeon E5-2628 v3 is
The Xeon E5-2628 v3 is an OEM Haswell-EP eight core for vendor servers on LGA 2011-v3. Listings place eight cores and 16 threads at 2.5 GHz base with turbo to 3.0 GHz. Twenty megabytes of Smart Cache serve guests. Power is 85 W on 22 nm from September 2014. Some family tables mark this SKU without Hyper-Threading, in which case firmware and operating systems would report eight threads; buyers should confirm thread count in the vendor matrix and in OS output before planning guest density.
Eight cores consolidate services per socket for vendor deployments. Modest clocks hold power while cache covers tenants. ECC DDR4 guards data. No integrated graphics exist. OEM validation ties stepping to vendor systems, so generic board support varies. Used buyers meet this SKU in system pulls with locked firmware.
DDR4 ECC over four channels feeds each socket with two QPI links between dual nodes. The mix is a server socket for vendor hosts where eight OEM threads at 85 W are the design point.
Socket and motherboard compatibility
The E5-2628 v3 fits LGA 2011-v3 on vendor C612 Grantley platforms. OEM stepping may fail on generic boards. Confirm the exact system matrix and thread count before purchase. X99 desktop never takes this server OEM chip.
ECC RDIMMs over four channels carry memory. The Socket vs chipset: what decides whether a CPU works guide is desktop focused, so use vendor rules. Cooling is vendor 85 W heatsinks with rack airflow.
Retail eight core E5 v3 offer wider support where OEM locks bind. Verify microcode and thread reporting first.
Memory, PCIe and cooling
DDR4 ECC quad channel per socket suits virtual guests. Even maps protect NUMA fairness. Large RDIMMs reach high counts. Speed steps per manual.
Forty PCIe lanes per socket feed NICs and HBAs for fabric. NUMA placement across QPI links matters. Vendor manuals detail slots.
Vendor 85 W cooling sustains loads with cool inlets. No retail cooler exists. Turbo to 3.0 GHz needs per core headroom.
Upgrade paths
Within the socket the Intel Xeon E5-2630 v3 with eight cores offers retail availability for broader boards. The Intel Xeon E5-2620 v3 with six cores is a lower density retail step. Both need platform checks.
Newer sockets replace Grantley. The E5-2628 v3 covers OEM hosts where eight cores at 85 W are specified, subject to thread count confirmation.
Frequently asked questions
What socket does the Xeon E5-2628 v3 use?
It uses LGA 2011-v3 on vendor C612 systems.
How many cores does the Xeon E5-2628 v3 have?
Eight cores and 16 threads at 2.5 GHz base with turbo to 3.0 GHz, subject to vendor thread reporting.
How much cache does the Xeon E5-2628 v3 have?
20 MB of Smart Cache.
What is the TDP of the Xeon E5-2628 v3?
85 W as an OEM vendor part.
Sources and verification
- List of Intel Xeon processors Haswell-based (Wikipedia, E5-2628 v3 data and HT note)
- Haswell microarchitecture (Wikipedia, Haswell-EP data)
Facts last checked against these sources on . Page last edited on .