AMD EPYC 7543
The AMD EPYC 7543 is a 32-core, 64-thread server processor based on the 7nm Zen 3 architecture for Socket SP3. Providing an elevated base clock of 2.80 GHz, boost clock up to 3.70 GHz, and 256MB of L3 cache at a 225W TDP, it was designed for compute-intensive virtualization, mid-sized database management, enterprise analytics, and high-frequency software development builds. With 8 channels of DDR4-3200 memory and 128 PCIe 4.0 lanes, it delivered excellent per-core performance while avoiding the software licensing penalties associated with 64-core CPUs. In the refurbished market, it is heavily demanded for VMware and Proxmox home labs and SMB servers. Buyers must check for PSB locking.
Also written as: AMD EPYC 7543 32-Core, 7543 Milan, EPYC 7543 Processor
Specifications
| Brand | AMD |
|---|---|
| Family | EPYC |
| Form factor | Socket SP3 (LGA 4094) |
| Released | Mar 2021 |
| End of sale | Mar 2024 |
| Cores | 32 |
| Base clock (GHz) | 2.8 |
| Tdp (W) | 225 |
Generations
- Previous generation: AMD Epyc 7542
- Next generation: AMD EPYC 9354
Reference prices (last 14 days, updated 2026-10-27)
Refurbished: USD 1,650 (1 sighting, Oct 2026)
Used: USD 1,200 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| ebay.com | used | USD 1,200 | Tested working pull, vendor unlocked (PSB clean) | 2026-10-27 |
| serversupply.com | refurbished | USD 1,650 | Refurbished SP3 processor with 90-day warranty | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Equivalent models from other brands
Buying a used EPYC 7543: what to check
Inspect AMD PSB security fuse status to ensure the CPU is vendor-unlocked, check LGA 4094 gold contact pads for any signs of physical wear, and verify server heatsink 225W rating.
FAQ
What is the base and boost clock of the EPYC 7543?
It features a 2.80 GHz base clock and boosts up to 3.70 GHz.
How much L3 cache does the EPYC 7543 provide?
It provides 256MB of unified Zen 3 L3 cache across all 32 cores.
Does the 7543 support dual-socket server motherboards?
Yes, the standard 7543 supports both 1-socket and 2-socket server configurations.
Buying or selling EPYC 7543?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- AMD EPYC 7543 Processor Specifications, checked 2026-10-27