AMD Ryzen 5 8640HS socket: FP8
The AMD Ryzen 5 8640HS uses FP8, a soldered BGA for Hawk Point mobile APUs with DDR5 or LPDDR5X and 20 PCIe Gen4 lanes. The 6-core chip at 28 W with Radeon 760M graphics cannot be replaced.
- Socket
- FP8
- Launched
- December 2023
- Cores and threads
- 6 and 12
- Default TDP
- 28 W
- Codename
- Hawk Point
- Segment
- Mobile (soldered)
- Family
- AMD Ryzen 5
- Clocks
- 3.5 / 4.9 GHz
AMD Ryzen 5 8640HS 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 | 28 W (20 to 30 W configurable) |
| Manufacturing process | TSMC 4 nm FinFET |
| Memory support | DDR5-5600 or LPDDR5X-7500, 2 channels, up to 256 GB |
| PCI Express | PCIe 4.0 x20 |
| Integrated graphics | AMD Radeon 760M, 8 CUs at up to 2600 MHz |
| NPU | AMD Ryzen AI, up to 16 TOPS |
| Multiplier | Locked |
| Package | FP8 (BGA, soldered, 25 by 40 mm) |
Motherboard compatibility
AMD Ryzen 5 8640HS 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 8640HS is
The Ryzen 5 8640HS is a 6-core and 12-thread mobile APU that AMD launched in December 2023 for efficient performance 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 178 sq mm die uses TSMC 4 nm and carries a 28 W default TDP inside a 20 to 30 W configurable range. It matches the 8640U on clocks with HS firmware tuning for larger bodies.
Radeon 760M graphics with 8 compute units at up to 2600 MHz handle office creation displays. A Ryzen AI NPU with up to 16 TOPS covers studio effects. Shared DDR5 or LPDDR5X keeps cost down for the mainstream HS tier.
Balanced thin buyers fit here. The 28 W envelope with HS cooling sustains bursts longer than U bodies. Shoppers who need 45 W sustained base should take the AMD Ryzen 5 8645HS with 4.3 GHz base instead, since this 8640HS prioritizes efficiency.
Socket and motherboard compatibility
The 8640HS solders to FP8 with 20 to 30 W cooling. No socket upgrade exists. Firmware sets power between quiet and balanced modes.
Boards use DDR5 SODIMM or LPDDR5X in two channels. NVMe plus USB4 covers storage and docks. Vendor power profiles decide sustained behavior.
HS shoppers compare U versus HS at the same clocks. The 8640HS matches the AMD Ryzen 5 8640U on speed with HS body cooling. The LGA, PGA and BGA: CPU package types explained guide explains soldered design.
Memory, PCIe and cooling
DDR5-5600 or LPDDR5X-7500 in two channels is the menu. Dual modules help graphics. Soldered capacity is fixed where fitted.
PCIe Gen4 x20 serves storage, wireless and displays. Options vary by model.
Cooling is thin 28 W with quiet curves. No retail cooler ships with soldered parts.
Upgrade paths
No CPU upgrade exists. The 6-core HS decision is made at order time. RAM and NVMe can grow where fitted.
The next platform is Strix Point. A working 8640HS lasts balanced thin years.
Frequently asked questions
What socket does the Ryzen 5 8640HS use?
It uses FP8, soldered with DDR5 or LPDDR5X. The chip cannot be replaced.
How fast is the Ryzen 5 8640HS?
Six cores and 12 threads at 3.5 GHz base and up to 4.9 GHz boost, with 16 MB of L3 at 28 W.
What graphics does the 8640HS include?
Radeon 760M with 8 compute units at up to 2600 MHz.
Can the Ryzen 5 8640HS be upgraded?
No. CPU solders at the factory. RAM and storage can change where allowed.
Sources and verification
- AMD Ryzen 7 PRO 8840U Hawk Point specs pattern (AMD)
- Ryzen 9 7940HS Phoenix table 8640HS 6 cores 4.9GHz 760M (Wccftech)
Facts last checked against these sources on . Page last edited on .