AMD FX-770K socket: Socket FM2+
The AMD FX-770K uses the Socket FM2+ socket on FM2+ boards. It is an unlocked quad Kaveri part from 3.5 GHz to 3.9 GHz at 65 W with no integrated graphics.
- Socket
- Socket FM2+
- Launched
- December 2014
- Cores and threads
- 4 and 4
- Default TDP
- 65 W
- Codename
- Kaveri
- Segment
- Desktop
- Family
- AMD FX
- Clocks
- 3.5 / 3.9 GHz
AMD FX-770K specifications
| Cores | 4 |
|---|---|
| Threads | 4 |
| Core architecture | Steamroller (Kaveri) cores on 28 nm |
| Clocks | 3.5 GHz base, up to 3.9 GHz turbo |
| Cache | 4 MB L2 (2 × 2 MB, no L3) |
| Default TDP | 65 W |
| Manufacturing process | 28 nm |
| Memory support | DDR3-2133, two channels |
| PCI Express | PCIe 3.0, 16 lanes from the APU |
| Integrated graphics | None (discrete GPU required) |
| Multiplier | Unlocked |
| ECC memory | No |
| Package | Socket FM2+ (PGA906) |
Motherboard compatibility
AMD FX-770K needs a motherboard with a Socket FM2+ socket. Chipset by chipset data for this codename is not recorded yet. See the Socket FM2+ chipset list and the board maker's CPU support list.
Socket FM2+ at a glance
| Type | PGA, 906 contacts |
|---|---|
| Package size | 40 × 40 mm |
| Introduced | 2014 |
| Memory | DDR3-2133, two channels, ECC not supported |
| Cooler mounting holes | 48 × 96 mm |
What the FX-770K is
The FX-770K is an unlocked headless Kaveri quad on Socket FM2+ for OEM tuning rigs. It runs 4 Steamroller cores and 4 threads at 3.5 GHz base with turbo to 3.9 GHz. Four megabytes of L2 in two 2 MB slices cover games. Power is 65 W on 28 nm from December 2014 as OEM and tray supply. No integrated graphics exist.
The open multiplier suits overclocking on A88X boards despite the OEM channel. Stock clocks match retail tuning bursts. The 65 W envelope keeps tuning accessible with tower cooling. The 245 mm2 GlobalFoundries die shares Kaveri silicon with A10 parts.
DDR3-2133 over two channels feeds four cores. A discrete card is mandatory for displays. Buyers meet it in white box tuning rigs where unlocked headless Kaveri must cost less than retail K parts.
Socket and motherboard compatibility
The 770K fits Socket FM2+ on A88X boards with tuning BIOS options. The PGA906 package seats like retail Kaveri. DDR3-2133 DIMMs match stock turbo. A discrete card covers setup.
Dual channel fast DDR3 helps CPU bound games. The Socket vs chipset: what decides whether a CPU works guide covers AMD pairing. FM2 boards never accept Kaveri.
Memory, PCIe and cooling
DDR3-2133 over two channels suits tuning rigs with SSDs. Fast pairs lift minimum frame times. ECC is not supported.
PCIe 3.0 with 16 lanes from the APU feeds one mainstream card. A Radeon card of the era matches unlocked clocks at 1080p. Chipset lanes handle storage.
Cooling uses the FM2+ mount with towers for lifts past stock. Tray packs ship without coolers. VRM airflow matters on budget boards.
Upgrade paths
On the same socket, the AMD Athlon X4 860K at 3.7 GHz above adds stock speed headless, while the AMD A10-7700K at 3.4 GHz with R7 graphics adds an iGPU. All share FM2+ boards.
Godavari K parts cover newer tuning builds. The 770K holds OEM unlocked headless Kaveri duty.
Frequently asked questions
What socket does the AMD FX-770K use?
It uses Socket FM2+ on FM2+ boards.
How many cores does the FX-770K have?
Four cores and four threads at 3.5 GHz base with turbo to 3.9 GHz.
Is the FX-770K unlocked?
Yes, the multiplier is unlocked.
Which graphics does the FX-770K include?
None. It needs a discrete card.
Sources and verification
Facts last checked against these sources on . Page last edited on .