Feex·CPU
AMD · Ryzen 9 · Laptop

AMD® Ryzen™ 9 7945HX3D

The AMD Ryzen 9 7945HX3D is a laptop processor released on July 27, 2023, built on the Zen 4 architecture using a 5 nm process. It has 16 cores and 32 threads, a base clock of 2.30 GHz, a maximum boost of 5.40 GHz, 128 MB of L3 cache, a 55 W TDP and the FL1 socket.

AMDRyzen 9LaptopFL1Zen 4TDP 55 WIntegrated graphics2023
Cores
16
Threads
32
Boost Clock
5.4 GHz
Base Clock
2.3 GHz
Architecture
Zen 4
Socket
FL1
TDP
55 W
L3 Cache
128 MB
Core layout
PPPPPPPPPPPPPPPP
16 Performance 32 Threads

Best for

Mini PCs and graphics-included builds

Overview

The AMD Ryzen 9 7945HX3D is a laptop processor with 16 cores and 32 threads, built on the Zen 4 architecture. It launched in Jul 2023. Clocks run from 2.3 GHz base to 5.4 GHz boost. A 128-MB L3 cache backs the cores (9.0 MB per core). It addresses DDR5 memory up to 64 GB across 2 channels. The chip drops into the FL1 socket and exposes PCIe 5.0 (28 lanes). Rated TDP is 55 W.

Core Configuration

Cores
16
Threads
32
Threads per Core
2
Base Clock
2.3 GHz
Boost Clock
5.4 GHz

The AMD Ryzen 9 7945HX3D has 16 physical cores and runs 32 logical threads. It runs 2 threads per core. It runs at a base clock of 2.30 GHz and boosts up to 5.40 GHz.

Architecture & Generation

Manufacturer
AMD
Family
Ryzen 9
Segment
Laptop
Generation
Ryzen 7000 Series
Architecture
Zen 4
Codename
Dragon Range
Lithography
5 nm
Release Date
Jul 2023

The AMD Ryzen 9 7945HX3D is a laptop processor, belongs to the AMD Ryzen 9 family, uses the Zen 4 architecture, carries the codename Dragon Range and is manufactured on a 5 nm process. It launched in Jul 2023.

Cache

L2 Cache (Total)
16 MB
L3 Cache
128 MB
Cache per Core
9 MB
Total Cache
144 MB

The AMD Ryzen 9 7945HX3D has 16 MB of L2 cache and 128 MB of L3 cache. That adds up to about 144.0 MB of cache, or 9.00 MB per core. Feex has no recorded L1 cache size for this processor.

Cache Hierarchy

L2L3
L2 16 MBL3 128 MB

The AMD Ryzen 9 7945HX3D has a 2-level cache hierarchy: L2 at 16 MB and L3 at 128 MB. L3 is the largest level and makes up about 89% of the cache listed here.

Memory Support

Max Memory
64 GB
Memory Channels
2
Memory Types
DDR5
DDR5 Support
Yes
DDR4 Support
No
LPDDR Support
No

The AMD Ryzen 9 7945HX3D supports DDR5 memory, addresses up to 64 GB of memory and uses 2 memory channels. It does not support DDR4 and LPDDR memory.

Graphics

Integrated Graphics
Yes
Graphics Model
Not recorded

The AMD Ryzen 9 7945HX3D includes integrated graphics.

Platform & Compatibility

Socket
FL1
PCIe Generation
5.0
PCIe Lanes
28

The AMD Ryzen 9 7945HX3D uses the FL1 socket, supports PCI Express 5.0 and provides up to 28 PCIe lanes.

Power & Thermals

TDP
55 W

The AMD Ryzen 9 7945HX3D has a rated TDP of 55 W.

Platform Capabilities

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

Instruction Sets

0 supported
Not recorded
AES-NIAVX-512AVX2AVXAVX-VNNICET

Security and Reliability

0 supported
Not recorded
AMD SEVAMD SMEControl-flow Enforcement (CET)Execute Disable (NX)Memory EncryptionSMAP

Virtualization

0 supported
Not recorded
AMD SVMAMD-V (Hardware Virtualization)NPT / RVIIOMMUSecond-Level Address Translation

Feex has no record for AES-NI, AVX-512, AVX2, AVX, AVX-VNNI and CET, which is different from being unsupported.

Feex has no record for AMD SEV, AMD SME, Control-flow Enforcement (CET), Execute Disable (NX), Memory Encryption and SMAP, which is different from being unsupported.

Feex has no record for AMD SVM, AMD-V (Hardware Virtualization), NPT / RVI, IOMMU and Second-Level Address Translation, which is different from being unsupported.

Naming & Aliases

Display Name
AMD® Ryzen™ 9 7945HX3D
Normalized Name
AMD Ryzen 9 7945HX3D
Product line brand
Ryzen

Its normalized catalog name is AMD Ryzen 9 7945HX3D.

Real-world compute in the Feex fleet

No Feex fleet machines with the AMD Ryzen 9 7945HX3D have reported compute telemetry yet, so real-world compute for this processor is not recorded.

How fleet compute is measured · Fleet compute leaderboard · JSON

Data Coverage

Feex has recorded 37% of the specifications it tracks for the AMD Ryzen 9 7945HX3D. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L1 Cache (Total), L2 Cache (per Core) and L4 Cache. Memory Support: Memory Bandwidth, ECC Memory and Max Memory Speed. Graphics: Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count, Foundry and Launch Price. Naming & Aliases: SKU, Model Number, Processor Number and Part Number. Performance: single-core and multi-core ratings and all computed performance metrics.

Common questions

How many cores and threads does the AMD Ryzen 9 7945HX3D have?

The AMD Ryzen 9 7945HX3D has 16 cores and 32 threads.

What architecture does the AMD Ryzen 9 7945HX3D use?

The AMD Ryzen 9 7945HX3D is built on the Zen 4 architecture.

Does the AMD Ryzen 9 7945HX3D have integrated graphics?

Yes. The AMD Ryzen 9 7945HX3D includes integrated graphics.

What socket does the AMD Ryzen 9 7945HX3D use?

The AMD Ryzen 9 7945HX3D uses the FL1 socket.

What memory does the AMD Ryzen 9 7945HX3D support?

The AMD Ryzen 9 7945HX3D supports DDR5 up to 64 GB across 2 channels.

How fast does the AMD Ryzen 9 7945HX3D run?

The AMD Ryzen 9 7945HX3D can boost up to 5.4 GHz, with a 2.3 GHz base clock.

What is the TDP of the AMD Ryzen 9 7945HX3D?

The AMD Ryzen 9 7945HX3D has a TDP of 55 W.

What is the AMD Ryzen 9 7945HX3D best for?

Based on its specifications, the AMD Ryzen 9 7945HX3D is well suited for Mini PCs and graphics-included builds.

How much cache does the AMD Ryzen 9 7945HX3D have?

The AMD Ryzen 9 7945HX3D has 16384 KB of L2 cache and 128 MB of L3 cache.