AMD Ryzen 5 7640U socket: FP8
The AMD Ryzen 5 7640U uses FP8, a soldered BGA for Phoenix mobile APUs with DDR5 or LPDDR5X and 20 PCIe Gen4 lanes. The 6-core chip at 15 W with Radeon 760M graphics cannot be replaced.
- Socket
- FP8
- Launched
- May 2023
- Cores and threads
- 6 and 12
- Default TDP
- 15 W
- Codename
- Phoenix
- Segment
- Mobile (soldered)
- Family
- AMD Ryzen 5
- Clocks
- 3.5 / 4.9 GHz
AMD Ryzen 5 7640U specifications
| Cores | 6 |
|---|---|
| Threads | 12 (SMT) |
| Core architecture | Zen 4 |
| Clocks | 3.5 GHz base, up to 4.9 GHz boost |
| Cache | 16 MB L3, 6 MB L2 |
| Default TDP | 15 W |
| Manufacturing process | TSMC 4 nm FinFET |
| Memory support | DDR5-5600 or LPDDR5X-7500, 2 channels |
| PCI Express | PCIe 4.0 x20 |
| Integrated graphics | AMD Radeon 760M, 8 CUs |
| NPU | AMD Ryzen AI, 10 TOPS |
| Multiplier | Locked |
| Package | FP8 (BGA, soldered, 25 by 40 mm) |
Motherboard compatibility
AMD Ryzen 5 7640U needs a motherboard with a FP8 socket. Chipset by chipset data for this codename is not recorded yet. See the FP8 chipset list and the board maker's CPU support list.
FP8 at a glance
| Type | BGA, 1,140 contacts |
|---|---|
| Package size | 25 × 40 mm |
| Introduced | 2023 |
| Memory | DDR5 SODIMM or soldered LPDDR5X depending on board design, up to LPDDR5X-8533 on Gorgon Point, dual channel with ECC and Link-ECC options on embedded P100 boards |
| Cooler mounting holes | Not applicable (soldered) |
What the Ryzen 5 7640U is
The Ryzen 5 7640U is a 6-core and 12-thread mobile APU that AMD launched in May 2023 for thin and light laptops. Six Zen 4 cores with simultaneous multithreading run at 3.5 GHz base and up to 4.9 GHz boost, plus 6 MB of L2 and 16 MB of L3. The TSMC 4 nm die carries a 15 W configurable TDP for fanless-adjacent thin bodies with long battery targets.
Radeon 760M graphics with 8 compute units cover everyday displays through shared memory. The 15 W envelope prioritizes battery over sustained throughput, with short bursts to 4.9 GHz for app launches. DDR5 or LPDDR5X board options let makers choose serviceability or thinness.
Ultraportable buyers fit here. Six cores keep travel work smooth at low power. Shoppers who need 45 W sustained base should take HS parts such as the AMD Ryzen 5 7640HS with 4.3 GHz base instead, since this U part trades continuous speed for battery.
Socket and motherboard compatibility
The 7640U solders to FP8 with 15 W cooling. No socket upgrade exists. Firmware caps power for thin bodies.
Boards use DDR5 SODIMM or soldered LPDDR5X in two channels. NVMe plus USB-C covers storage and docks. Vendor profiles decide silent versus balanced behavior.
U shoppers compare the 6-core U against HS at the same turbo. The 7640U matches 4.9 GHz bursts at lower base. The LGA, PGA and BGA: CPU package types explained guide explains soldered thin design.
Memory, PCIe and cooling
DDR5-5600 or LPDDR5X-7500 in two channels is the menu. Shared graphics favor dual modules. Soldered size is fixed where fitted.
PCIe Gen4 x20 serves storage, wireless and displays. Options vary by thin model.
Cooling is ultraportable 15 W with quiet fans. No retail cooler ships with soldered parts.
Upgrade paths
No CPU upgrade exists. The U decision is made at order time. RAM and NVMe can grow where fitted.
The next platform is Hawk Point U with stronger NPU. A working 7640U lasts travel years.
Frequently asked questions
What socket does the Ryzen 5 7640U use?
It uses FP8, soldered with DDR5 or LPDDR5X. The chip cannot be replaced.
How fast is the Ryzen 5 7640U?
Six cores and 12 threads at 3.5 GHz base and up to 4.9 GHz boost, with 16 MB of L3 at 15 W.
What graphics does the 7640U include?
Radeon 760M with 8 compute units for everyday displays.
Can the Ryzen 5 7640U be upgraded?
No. CPU solders at the factory. RAM and storage can change where allowed.
Sources and verification
- AMD Ryzen 5 7640HS Phoenix 6 cores 5.0GHz FP8 specs pattern (AMD)
- AMD Ryzen 7 7840U Phoenix 8 cores 5.1GHz FP8 specs pattern (TechPowerUp)
Facts last checked against these sources on . Page last edited on .