AMD Ryzen 7 7840H socket: FP8
The AMD Ryzen 7 7840H 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 7840H 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 |
| 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 7840H 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 7840H is
The Ryzen 7 7840H is an 8-core and 16-thread mobile APU for performance laptops on the Phoenix family. 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 TSMC 4 nm die carries a 45 W default TDP for larger thin bodies with gaming-capable cooling.
Radeon 780M graphics with 12 compute units at up to 2700 MHz lead thin integrated graphics for creation and light play. Shared DDR5-5600 or LPDDR5X-7500 keeps board cost down for the 8-core H tier. Board makers pair H parts with stronger power delivery than U parts for sustained clocks.
Standard laptop buyers fit here. The H suffix marks vendor-tuned firmware for mainstream gaming bodies. Shoppers who need efficient HS tuning should compare the AMD Ryzen 7 7840HS with the same clocks instead, since silicon matches and firmware differs.
Socket and motherboard compatibility
The 7840H solders to FP8 with 45 W cooling. No socket upgrade exists. Board firmware sets power delivery for H bodies.
Boards use DDR5 SODIMM or LPDDR5X in two channels up to 256 GB. NVMe plus USB4 covers storage and docks. Vendor profiles decide behavior.
H shoppers compare H versus HS twins at equal clocks. The 7840H matches HS speed with H firmware. The LGA, PGA and BGA: CPU package types explained guide covers soldered design.
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 storage, wireless and displays. Options vary by model.
Cooling is performance 45 W with gaming-capable fans. No retail cooler ships with soldered parts.
Upgrade paths
No CPU upgrade exists. The H decision is made at order time. RAM and NVMe can grow where fitted.
The next platform is Hawk Point. A working 7840H lasts performance laptop years.
Frequently asked questions
What socket does the Ryzen 7 7840H use?
It uses FP8, soldered with DDR5 or LPDDR5X. The chip cannot be swapped.
How fast is the Ryzen 7 7840H?
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 7840H include?
Radeon 780M with 12 compute units at up to 2700 MHz.
Can the Ryzen 7 7840H 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 pattern (AMD)
- AMD Ryzen 7 7840HS Phoenix 8 cores benchmarks FP8 (CPUBoss)
Facts last checked against these sources on . Page last edited on .