AMD Ryzen 7 7840HS socket: FP8
The AMD Ryzen 7 7840HS uses FP8, a soldered BGA for Phoenix mobile APUs with DDR5 or LPDDR5X and 20 PCIe Gen4 lanes. The 8-core chip at 45 W with Radeon 780M graphics cannot be replaced.
- Socket
- FP8
- Launched
- January 3, 2023
- Cores and threads
- 8 and 16
- Default TDP
- 45 W
- Codename
- Phoenix
- Segment
- Mobile (soldered)
- Family
- AMD Ryzen 7
- Clocks
- 3.8 / 5.1 GHz
AMD Ryzen 7 7840HS specifications
| Cores | 8 |
|---|---|
| Threads | 16 (SMT) |
| Core architecture | Zen 4 |
| Clocks | 3.8 GHz base, up to 5.1 GHz boost |
| Cache | 16 MB L3, 8 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 780M, 12 CUs at up to 2700 MHz |
| NPU | AMD Ryzen AI, 10 TOPS |
| Multiplier | Locked |
| Package | FP8 (BGA, soldered, 25 by 40 mm) |
Motherboard compatibility
AMD Ryzen 7 7840HS 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 7 7840HS is
The Ryzen 7 7840HS is an 8-core and 16-thread mobile APU that AMD launched on January 3, 2023 for performance thin laptops. Eight Zen 4 cores with simultaneous multithreading run at 3.8 GHz base and up to 5.1 GHz boost, plus 8 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. Part numbers span FP7, FP7r2 and FP8 for different board designs.
Radeon 780M graphics with 12 compute units at up to 2700 MHz handle creation displays. A Ryzen AI NPU with 10 TOPS covers early AI effects. Shared DDR5-5600 or LPDDR5X-7500 keeps board cost in check for the 8-core performance tier.
Performance thin buyers fit here. The 3.8 GHz base sustains creation where 28 W U parts dip. Shoppers who need Hawk Point NPU strength should take HS 8000 parts instead, since this 7840HS prioritizes proven Phoenix graphics.
Socket and motherboard compatibility
The 7840HS solders to FP8 with 35 to 54 W cooling. No socket upgrade exists. Firmware sets power between balanced and performance modes.
Boards use DDR5 SODIMM or soldered LPDDR5X in two channels up to 256 GB. NVMe Gen4 plus USB4 covers storage and docks. Vendor power profiles decide sustained behavior.
HS shoppers compare Phoenix 8-core parts on firmware tuning. The 7840HS matches H clocks with HS efficiency. The LGA, PGA and BGA: CPU package types explained guide explains soldered mobile.
Memory, PCIe and cooling
DDR5-5600 or LPDDR5X-7500 in two channels is the menu. Dual modules help the 780M 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 Phoenix 8-core decision is H versus HS at order time. RAM and NVMe can grow where fitted.
The next platform is Hawk Point with stronger NPU. A working 7840HS lasts performance thin years.
Frequently asked questions
What socket does the Ryzen 7 7840HS use?
It uses FP8, soldered with DDR5 or LPDDR5X. The chip cannot be replaced.
How fast is the Ryzen 7 7840HS?
Eight cores and 16 threads at 3.8 GHz base and up to 5.1 GHz boost, with 16 MB of L3 at 45 W.
What graphics does the 7840HS include?
Radeon 780M with 12 compute units at up to 2700 MHz.
Can the Ryzen 7 7840HS be upgraded?
No. CPU solders at the factory. RAM and storage can change where allowed.
Sources and verification
- AMD Ryzen 7 7840HS Phoenix 8 cores 5.1GHz FP8 specs (AMD)
- AMD Ryzen 7 7840HS Phoenix 8 cores benchmarks FP8 (CPUBoss)
Facts last checked against these sources on . Page last edited on .