AMD Ryzen 9 7940HX vs Intel Core i5-14500HX vs AMD Ryzen 9 7945HX

AMD Ryzen 9 7940HX

The chip also integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB 4), 28 PCIe 5.0 lanes (for GPUs and SSDs), a dual-channel DDR5-5200 memory controller and a small AMD Radeon 610M graphics card (2CUs, 400 - 2200 MHz).

Intel Core i5-14500HX

The Intel Core i5-14500HX is a high-end CPU from the Raptor-Lake-HX Refresh series (RPL-H). The CPU offers all 6 performance cores (P-cores, Golden Cove or Raptor Cove architecture) and 8 efficiency cores (E-cores, Gracemont architecture). The P-cores support hyperthreading (therefore 20 threads together) and clock from 2.4 to 4.9 GHz (single-core turbo). The E-cores clock from 1.9 - 3.7 GHz and should offer comparable performance to old Skylake cores (e.g. i7-6920HQ).

Performance

Thanks to the higher clock rates of the Rocket Lake series, the i5-14500HX can reach the level of the old Core i9-12900H and is therefore a very fast mobile CPU that is ideal for all areas of application.

Graphics unit

Like its predecessor, Intel integrates an Intel Xe-based graphics unit. In the 14500HX, all 96 EUs are activated and clock at up to 1.55 GHz.

Features

Like Alder-Lake-H, Raptor-Lake-H has partially integrated WiFi 6E and Thunderbolt 4 (4x). The integrated memory controller now supports faster DDR5-5200 memory. The integrated Gaussian and Neural Accelerator (GNA) is still installed in version 3.0. The Quick Sync 8 media engine is the same as in Rocket Lake and supports MPEG-2, AVC, VC-1 decode, JPEG, VP8 decode, VP9, HEVC and AV1 decode. The chip supports PCIe 5.0 x8 for a dGPU and two PCIe 4.0 x4 for SSDs. The PCH also offers PCIe Gen3 x12.

Power consumption

The Intel Core i5-14500HX is specified with 55 watts TDP (PL2 157 watts). The processor continues to be manufactured using the improved Intel 7 process (10 nm SuperFin).

AMD Ryzen 9 7945HX

The AMD Ryzen 9 7945HX is a fast high-end laptop processor of the Dragon Range series. It offers 16 cores based on the Zen 4 architecture that supports hyperthreading (32 threads). The cores clock from 2.5 (base) up to 5.4 GHz (single core boost). The 7945HX is the fastest mobile Ryzen CPU at launch and derived from the desktop Ryzen 9 7950X.

The Dragon Range series still uses a chiplet design with two CCD-clusters (each with 8 possible cores) in 5nm and an IO-die (including the memory controller and the Radeon 610M iGPU) in 6nm. The chip integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB4), 28 PCIe 5.0 lanes (for GPU and SSDs) and a dual-channel DDR5-5200 memory controller.

Performance

The Ryzen 9 7945HX is among the fastest processors in our database, as of August 2023. It is in the same league as the Ryzen 9 7945HX3D and noticeably ahead of the Core i9-13980HX, as far as multi-thread benchmark scores are concerned. It is outrageously, unbelievably fast, and those fortunate enough to purchase a laptop built around this CPU will have no performance issues for at least three years.

Thanks to its powerful cooling solution and a long-term CPU power limit of 128 W, the ROG Strix Scar 17 G733PY-XS96 is one of the fastest laptops built around the 7945HX that we know of.

The R9 7945HX is rated at a TDP of 55 Watt and can be configured up to 75 Watt (cTDP).