Ampere Altra Q64-33 socket: LGA 4926
The Ampere Altra Q64-33 uses the LGA 4926 socket. It is a 220 W 64-core Arm server processor at up to 3.3 GHz for top-frequency 64-core cloud servers.
- Socket
- LGA 4926
- Launched
- 2022
- Cores and threads
- 64 and 64
- Base power
- 220 W
- Codename
- Altra
- Segment
- Server
- Family
- Ampere Altra
- Clocks
- 3.3 GHz
Ampere Altra Q64-33 specifications
| Cores | 64 |
|---|---|
| Threads | 64 (single-thread cores) |
| Core architecture | Altra (Arm v8.2+) |
| Clocks | 3300 MHz sustained, no turbo |
| Cache | 128 KB L1 per core, 1 MB L2 per core, 32 MB system cache |
| Processor base power (TDP) | 220 W |
| Manufacturing process | 7 nm |
| Memory support | Eight channels of DDR4-3200 ECC, up to 4 TB per socket |
| PCI Express | 128 PCIe Gen4 lanes per socket |
| ECC memory | Yes |
| Package | LGA 4926 (FCLGA, 4926 lands) |
| Multiplier | Locked |
| Integrated graphics | None |
Motherboard compatibility
Ampere Altra Q64-33 needs a motherboard with a LGA 4926 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 4926 chipset list and the board maker's CPU support list.
LGA 4926 at a glance
| Type | LGA, 4,926 contacts |
|---|---|
| Package size | 77.08 × 67.00 mm |
| Introduced | March 2020 |
| Memory | Eight channels of DDR4-3200 ECC memory through the on-chip controllers |
| Cooler mounting holes | LGA backplate and retention frame |
What the Altra Q64-33 is
The Ampere Altra Q64-33 is a 64-core server processor with a 3.3 GHz maximum frequency. It runs 64 single-thread Arm v8.2+ cores with no turbo beyond the top bin, so 64 cores give 64 threads. Cache is 1 MB of L2 per core plus system cache on a 7 nm process. Power is rated at 220 W max with about 151 W usage power in a 4926-pin FCLGA package with order part number AC-106422002.
The 3.3 GHz top bin with 64 cores heads the frequency list for buyers who want peak single-thread pace with fewer cores, which is why the Q64-33 pairs with the Q80-33 at the top of the stack. Ampere lists the Q64-33 as a later top bin. The chip supports enterprise RAS.
Top clocks with a 220 W envelope suit frequency-first cloud servers with DDR4 memory. That is why the Q64-33 shipped in licensed-per-core hosts.
Socket and motherboard compatibility
The Q64-33 fits LGA 4926 frequency-first servers with Altra support. It needs a 4926-land board with Ampere firmware and a BIOS that lists the Q64-33. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Licensed-per-core hosts are the natural match. Boards listing the Q64-33 accept the chip with a 220 W heatsink.
Memory, PCIe and cooling
Memory is eight channels of DDR4-3200 ECC through the on-chip controllers, up to 4 TB per socket. PCIe Gen4 with 128 lanes per socket feeds storage and networking. Cooling uses server heatsinks rated for 220 W.
Upgrade paths
On the same socket, a move to an Altra Q80-33 such as Ampere Altra Q80-33 adds 16 cores at 250 W when density matters. An Altra Q64-30 such as Ampere Altra Q64-30 drops to 3.0 GHz at 180 W.
A move to Altra Max adds density. The LGA 4926 page lists the range.
Frequently asked questions
What socket does the Altra Q64-33 use?
LGA 4926. It is a 220 W 64-core Arm server part at 3.3 GHz.
What memory does the Q64-33 use?
Eight channels of DDR4-3200 ECC.
What is the upgrade path from the Q64-33?
A Q80-33 adds cores, or a Q64-30 drops clocks.
Sources and verification
- Ampere Altra datasheet Q64-33 220W (Ampere)
- Ampere Altra family specs (Newegg)
- LGA 4926 board (ASRock Rack)
Facts last checked against these sources on . Page last edited on .