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AMD Ryzen 5 7640U

AMD R5 7640U

The Ryzen 5 7640U is a Phoenix family processor that was unveiled in H1 2023. The mid-range laptop chip 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; the latter is about as fast as the aging Intel Iris Xe options.

Furthermore, the 7640U is one of the first AMD processors to support Ryzen AI which is AMD's answer to Intel's DL Boost and GNA technologies.

Architecture & Features

Phoenix family chips are powered by the Zen 4 architecture, much like Dragon Range family chips are. The latter however lacks hardware AI workload acceleration capabilities that Phoenix has.

More importantly, Zen 4 introduces AVX512 support (which Zen 3 chips did not have) and, thanks to a plethora of other improvements including larger caches/registers/buffers across the board, is set to deliver a double-digit IPC improvement.

Elsewhere, the 7640U 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 really impressive as of H1 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 7640U is neither overclockable nor user-replaceable. It gets soldered down for good (FP7, FP7r2, FP8 socket interfaces).

Performance

While we have not tested a single system built around the 7640U as of December 2023, it's safe to expect the chip to be at least 10% faster than the Zen 3 Plus-powered Ryzen 5 6600U (6 cores, 12 threads, up to 4.5 GHz).

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 7640U has a long-term power limit (default TDP) of 28 W that laptop makers are free to change to anything between 15 W and 30 W. Either way, an active cooling solution is a must for any system powered by the chip.

Last but not the least, the 7640U is manufactured on TSMC's 4 nm process for high, as of late 2023, energy efficiency.

SeriesAMD Phoenix (Zen 4, Ryzen 7040)
CodenamePhoenix-U (Zen 4)

Series: Phoenix (Zen 4, Ryzen 7040) Phoenix-U (Zen 4)

AMD Ryzen 7 7840U compare3.3 - 5.1 GHz8 / 16 cores16 MB L3
AMD Ryzen 5 7640U « 3.5 - 4.9 GHz6 / 12 cores16 MB L3
Clock Rate3500 - 4900 MHz
Level 1 Cache384 KB
Level 2 Cache6 MB
Level 3 Cache16 MB
Number of Cores / Threads6 / 12
6 x 4.9 GHz AMD Zen 4
Power Consumption (TDP = Thermal Design Power)28 Watt
Manufacturing Technology4 nm
Die Size178 mm2
Max. Temperature100 °C
SocketFP7/FP7r2/FP8
FeaturesDDR5-5600/LPDDR5x-7500 RAM, PCIe 4, Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
GPUAMD Radeon 760M ( - 2600 MHz)
64 Bit64 Bit support
Architecturex86
Announcement Date05/23/2023
Product Link (external)www.amd.com

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Other CPUs of the series Phoenix (Zen 4, Ryzen 7040)

» AMD Ryzen 9 7940HS
   8x 4 GHz - 5.2 GHz
» AMD Ryzen 9 PRO 7940HS
   8x 4 GHz - 5.2 GHz
» AMD Ryzen 7 7840HS
   8x 3.8 GHz - 5.1 GHz
» AMD Ryzen 7 7840S
   8x 3.8 GHz - 5.1 GHz
» AMD Ryzen 7 PRO 7840HS
   8x 3.8 GHz - 5.1 GHz
» AMD Ryzen Z1 Extreme
   8x 3.3 GHz - 5.1 GHz
» AMD Ryzen 5 7640HS
   6x 4.3 GHz - 5 GHz
» AMD Ryzen 5 PRO 7640HS
   6x 4.3 GHz - 5 GHz
» AMD Ryzen 7 PRO 7840U
   8x 3.3 GHz - 5.1 GHz
» AMD Ryzen 7 7840U
   8x 3.3 GHz - 5.1 GHz
» AMD Ryzen Z1
   6x 3.2 GHz - 4.9 GHz
» AMD Ryzen 5 PRO 7640U
   6x 3.5 GHz - 4.9 GHz
» AMD Ryzen 5 7640U
   6x 3.5 GHz - 4.9 GHz
» AMD Ryzen 5 PRO 7540U
   6x 3.2 GHz - 4.9 GHz
» AMD Ryzen 5 7545U
   6x 3.2 GHz - 4.9 GHz
» AMD Ryzen 5 7540U
   6x 3.2 GHz - 4.9 GHz
» AMD Ryzen 3 7440U
   4x 3 GHz - 4.7 GHz

Surrounding CPUs

+ AMD Ryzen Z1
   6x 3.2 GHz - 4.9 GHz
+ AMD Ryzen 5 PRO 7640U
   6x 3.5 GHz - 4.9 GHz
+ Intel Core Ultra 5 125U
   12x 3.6 GHz - 4.3 GHz
+ Intel Core Ultra 5 134U
   12x 3.6 GHz - 4.4 GHz
+ AMD Ryzen 5 8640U
   6x 3.5 GHz - 4.9 GHz
» AMD Ryzen 5 7640U
   6x 3.5 GHz - 4.9 GHz
- AMD Ryzen 5 PRO 7540U
   6x 3.2 GHz - 4.9 GHz
- AMD Ryzen 5 8540U
   6x 3.2 GHz - 4.9 GHz
- AMD Ryzen 5 7545U
   6x 3.2 GHz - 4.9 GHz
- AMD Ryzen 5 7540U
   6x 3.2 GHz - 4.9 GHz
- AMD Ryzen 5 7535HS
   6x 3.3 GHz - 4.55 GHz
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Notebook Processors > AMD Ryzen 5 7640U Processor - Benchmarks and Specs
Klaus Hinum (Update: 2023-05-10)