AMD Ryzen 5 8645HS socket: FP8
The AMD Ryzen 5 8645HS uses FP8, a soldered BGA for Hawk Point mobile APUs with DDR5 or LPDDR5X and 20 PCIe Gen4 lanes. The 6-core chip at 45 W with Radeon 760M graphics cannot be replaced.
- Socket
- FP8
- Launched
- December 2023
- Cores and threads
- 6 and 12
- Default TDP
- 45 W
- Codename
- Hawk Point
- Segment
- Mobile (soldered)
- Family
- AMD Ryzen 5
- Clocks
- 4.3 / 5.0 GHz
AMD Ryzen 5 8645HS specifications
| Cores | 6 |
|---|---|
| Threads | 12 (SMT) |
| Core architecture | Zen 4 |
| Clocks | 4.3 GHz base, up to 5.0 GHz boost |
| Cache | 16 MB L3, 6 MB L2 |
| Default TDP | 45 W (35 to 54 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 2700 MHz |
| NPU | AMD Ryzen AI, up to 16 TOPS |
| Multiplier | Locked |
| Package | FP8 (BGA, soldered, 25 by 40 mm) |
Motherboard compatibility
AMD Ryzen 5 8645HS 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 8645HS is
The Ryzen 5 8645HS is a 6-core and 12-thread mobile APU that AMD launched in December 2023 for performance thin laptops. Six Zen 4 cores with simultaneous multithreading run at 4.3 GHz base and up to 5.0 GHz boost, plus 6 MB of L2 and 16 MB of L3. The 178 sq mm die uses TSMC 4 nm and carries a 45 W default TDP inside a 35 to 54 W configurable range. The high 4.3 GHz base sustains throughput where 28 W U parts dip.
Radeon 760M graphics with 8 compute units at up to 2700 MHz cover creation displays plus light play. A Ryzen AI NPU with up to 16 TOPS handles studio effects locally. Shared DDR5 or LPDDR5X keeps board cost in check for the 6-core performance tier.
Performance thin buyers who want high base clocks without 8-core cost fit here. The 4.3 GHz base shortens sustained jobs over the 3.5 GHz 8640U. Shoppers who need 8 cores for parallel creation should take 8-core HS parts instead, since this 8645HS prioritizes base speed over thread count.
Socket and motherboard compatibility
The 8645HS solders to FP8 with gaming-capable cooling for 35 to 54 W. No socket upgrade exists, so the 6-core choice is permanent. Laptop firmware sets power between quiet and performance modes.
Boards use DDR5 SODIMM or soldered LPDDR5X in two channels. NVMe Gen4 plus USB4 covers storage and docks. Power profiles shift behavior more than silicon revision.
HS shoppers compare the two 6-core HS parts on 0.8 GHz base and 0.1 GHz turbo. The 8645HS leads the AMD Ryzen 5 8640HS on sustained speed. The LGA, PGA and BGA: CPU package types explained guide covers soldered mobile.
Memory, PCIe and cooling
DDR5-5600 or LPDDR5X-7500 in two channels is the menu. Dual modules help the 760M GPU. Soldered size is fixed where fitted.
PCIe Gen4 x20 serves NVMe, wireless and displays. Fixed wiring means options vary.
Cooling is performance thin 45 W with dual fans on many models. No retail cooler ships with soldered parts.
Upgrade paths
No CPU upgrade exists. The HS 6-core decision is base tier at order time. RAM and NVMe can grow where fitted.
The next platform is Strix Point with newer NPU. A working 8645HS lasts performance thin years.
Frequently asked questions
What socket does the Ryzen 5 8645HS use?
It uses FP8, soldered with DDR5 or LPDDR5X. The chip cannot be swapped.
How fast is the Ryzen 5 8645HS?
Six cores and 12 threads at 4.3 GHz base and up to 5.0 GHz boost, with 16 MB of L3 at 45 W.
What graphics does the 8645HS include?
Radeon 760M with 8 compute units at up to 2700 MHz.
Can the Ryzen 5 8645HS 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 cTDP PCIe memory (AMD)
- Ryzen 9 7940HS Phoenix table 8645HS 6 cores 5.0GHz 760M (Wccftech)
Facts last checked against these sources on . Page last edited on .