AMD Ryzen 7 8845HS vs AMD Ryzen 5 8640HS

AMD Ryzen 7 8845HS

The Ryzen 7 8845HS is a powerful Hawk Point family chip that we believe to be a Ryzen 7 7840HS in disguise. The R7 8845HS was brought to life in H2 2023; it features 8 cores (16 threads thanks to SMT support) running at up to 5.1 GHz. Not only does this APU has full might of the Zen 4 architecture at its disposal, it also boasts the 2nd generation Ryzen AI technology. Last but not the least, the Radeon 780M serves as the integrated GPU.

Architecture & Features

Hawk Point family chips are powered by the Zen 4 architecture, much like Phoenix and Dragon Range family chips are. That's not to say that there is no difference between the three. With Hawk Point, AMD uncorks its 2nd generation Ryzen AI technology meaning the new processors are expected to deliver an up to 40% increase in generative AI performance over 7040 series APUs. Dozens of popular apps such as DaVinci Resolve support this technology, as of late 2023.

Unlike Zen 3, Zen 4 features AVX512 support and, thanks to a plethora of other improvements including larger caches/registers/buffers across the board, is slated to bring a double-digit IPC improvement over the former.

Elsewhere, the 8845HS has 16 MB of L3 cache and a seriously fast RAM controller (up to LPDDR5x-7500 and up to DDR5-5600, ECC-enabled memory included). PCI-Express speeds are capped at 1.97 GB/s per lane which corresponds to the 4.0 spec.

This Ryzen 7 series chip is designed to run 64-bit Windows 11, 64-bit Windows 10 or Linux; please note that it isn't overclockable and neither is it user-replaceable. It gets soldered to the motherboard for good instead (FP7, FP7r2, FP8 socket interfaces).

Performance

Since the 8845HS is a 7840HS in disguise, it's safe to expect it to be just slightly faster than the Core i9-13900H and also the Ryzen 9 7940HS, as far as multi-thread performance is concerned. This is a very fast chip, as of Q3 2023.

Your mileage may vary depending on how high the CPU power limits are and how competent the cooling solution of your system is.

Graphics

The Radeon 780M (12 CUs / 768 shaders, up to 2,700 MHz) is capable of powering 4 monitors simultaneously with resolutions as high as SUHD 4320p. It will also have little issue hardware-encoding and hardware-decoding the most widely used video codecs (AV1, HEVC, AVC). As far as gaming is concerned, the thing will let you play most games at 1080p as long as you are fine with moderate quality settings. Long story short, this is the best iGPU money can buy, as of H2 2023.

Your mileage may vary depending on how high the CPU power limits are, how competent the cooling solution of your system is, how fast the RAM of your system is (there is no dedicated VRAM here).

Power consumption

This Ryzen 7 series chip has a long-term power limit (default TDP) of 35 W to 54 W, giving system makers a choice between improving battery life and making the system they're designing insanely fast. Either way, an active cooling solution is a must for a laptop or a mini-PC built around this APU.

The R7 8845HS is buit with TSMC's 4 nm process for high, as of late 2023, energy efficiency.

AMD Ryzen 5 8640HS

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The Ryzen 5 8640HS is a mid-range, Hawk Point family processor that was unveiled in Q4 2023. The 8640HS isn't actually a new chip; instead, it's a rebadged Ryzen 5 7640U, with slightly higher wattage of the 8640HS being the only meaningful difference between the two. The 8640HS has 6 SMT-enabled cores (12 threads) running at 3.5 GHz to 4.9 GHz. Those Zen 4 architecture cores are mated to the Radeon 760M integrated graphics adapter, and the Ryzen AI technology, now in its 2nd generation, is onboard as well to make apps like DaVinci Resolve and Adobe Photoshop more powerful than ever before.

Architecture & Features

Hawk Point chips are powered by the Zen 4 architecture, much like Phoenix and Dragon Range family chips are. That's not to say there is no difference between the three. With Hawk Point, AMD is betting big on generative AI; these processors are set to deliver an up to 40% increase in generative AI performance over 7040 series APUs.

Unlike Zen 3, Zen 4 features AVX512 support and, thanks to a plethora of other improvements including larger caches/registers/buffers, is slated to deliver a double-digit IPC improvement over the former.

Elsewhere, the 8640HS has 16 MB of L3 cache and USB 4 support (therefore, Thunderbolt is supported as well). The chip is compatible with DDR5-5600 and LPDDR5x-7500 RAM which is still impressive as of late 2023.

A system powered by this Ryzen 5 will have access to twenty PCIe 4 lanes; this means a speedy enough NVMe SSD will be able to deliver speeds up to 7.8 GB/s.

Systems powered by this APU are expected to run 64-bit Windows 11, 64-bit Windows 10, or Linux. Like most laptop chips, the 8640HS is neither overclockable nor user-replaceable. It gets soldered to the motherboard for good (FP7, FP7r2, FP8 socket interfaces).

Performance

It's safe to expect the APU to be at least 15% faster than the Zen 3 Plus-powered Ryzen 5 6600U (6 cores, 12 threads, up to 4.5 GHz), as far as multi-thread performance is concerned.

Your mileage may vary depending on how high the CPU power limits are and how competent the cooling solution of your laptop is.

Graphics

The Radeon 760M has 8 CUs (512 shaders) running at up to 2,600 MHz. While not great for gaming (unless you are fine with resolutions such as 900p and low detail settings), the iGPU will let you use up to 4 monitors with resolutions as high as SUHD 4320p. It also HW-decodes and HW-encodes the most widely used video codecs including AV1, HEVC, AVC without breaking a sweat.

Power consumption

The 8640HS has a long-term power limit (default TDP) of 28 W that laptop makers are free to change to anything between 20 W and 30 W. Most companies will probably go for a higher value to get better performance. Either way, an active cooling solution is a must for any system powered by the chip.

Last but not the least, the 8640HS is manufactured on TSMC's 4 nm process for high, as of late 2023, energy efficiency.

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Model

AMD Ryzen 7 8845HS

AMD Ryzen 5 8640HS

Series

AMD Hawk Point (Zen 4/4c, Ryzen 8040)

Codename

Hawk Point-HS (Zen 4)

Series: Hawk Point (Zen 4/4c, Ryzen 8040) Hawk Point-HS (Zen 4)

AMD Ryzen 9 8945HS	4 - 5.2 GHz	8 / 16	16 MB L3
AMD Ryzen 9 PRO 8945HS	4 - 5.2 GHz	8 / 16	16 MB L3
AMD Ryzen 7 8845HS «	3.8 - 5.1 GHz	8 / 16	16 MB L3
AMD Ryzen 7 8840HS	3.3 - 5.1 GHz	8 / 16	16 MB L3
AMD Ryzen 5 8645HS	4.3 - 5 GHz	6 / 12	16 MB L3
AMD Ryzen 5 8640HS	3.5 - 4.9 GHz	6 / 12	16 MB L3

AMD Ryzen 9 8945HS	4 - 5.2 GHz	8 / 16	16 MB L3
AMD Ryzen 9 PRO 8945HS	4 - 5.2 GHz	8 / 16	16 MB L3
AMD Ryzen 7 8845HS	3.8 - 5.1 GHz	8 / 16	16 MB L3
AMD Ryzen 7 8840HS	3.3 - 5.1 GHz	8 / 16	16 MB L3
AMD Ryzen 5 8645HS	4.3 - 5 GHz	6 / 12	16 MB L3
AMD Ryzen 5 8640HS «	3.5 - 4.9 GHz	6 / 12	16 MB L3

Clock

3800 - 5100 MHz

3500 - 4900 MHz

L1 Cache

512 KB

384 KB

L2 Cache

8 MB

6 MB

L3 Cache

16 MB

Cores / Threads

8 / 16
8 x 5.1 GHz AMD Zen 4

6 / 12
6 x 4.9 GHz AMD Zen 4

TDP

45 Watt

28 Watt

Technology

4 nm

Die Size

178 mm²

max. Temp.

100 °C

Socket

FP7/FP7r2/FP8

Features

DDR5-5600/LPDDR5x-7500 RAM, PCIe 4, Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME

DDR5-5600/LPDDR5x-7500 RAM, PCIe 4, Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3

iGPU

AMD Radeon 780M ( - 2700 MHz)

AMD Radeon 760M ( - 2600 MHz)

Architecture

x86

Announced

Manufacturer

www.amd.com