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AMD Ryzen 5 7640U vs AMD Ryzen 7 6800U

AMD Ryzen 5 7640U

► remove from comparison 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.

AMD Ryzen 7 6800U

► remove from comparison AMD R7 6800U

The AMD Ryzen 7 6800U is a processor for thin and light laptops based of the Rembrandt generation. The R7 6800U integrates all eight cores based on the Zen 3+ microarchitecture. They are clocked at 2.7 (guaranteed base clock) to 4.7 GHz (Turbo) and support SMT / Hyperthreading (16 threads). The chip is manufactured on the modern 6 nm TSMC process. Compared to the similar R7 6800H, the 6800U offers a lower base clock speed and a lower TDP.

The new Zen 3+ is a refresh of the Zen 3 architecture and should not offer a lot of changes. The chip itself however, offers a lot of new features, like support for USB 4 (40 Gbps), PCI-E Gen 4, DDR5-4800MT/s or LPDDR5-6400MT/s, WiFi 6E, Bluetooth LE 5.2, DisplayPort 2, and AV1 decode.

A big novelty is the integrated GPU Radeon 680M, that is now based on the RDNA2 architecture and offers 12 CUs at up to 2.2 GHz. It should be the fastest iGPU of all at the time of announcement.

Performance

The average 6800U in our database easily shoulders its way towards the best of the best, trading blows with the Core i7-1270P, the Core i7-11850H and the Ryzen 7 PRO 6850H as far as multi-thread benchmark scores are concerned. Throw everything you can at this little guy. He'll take it all and ask for more.

Thanks to its decent cooling solution and a long-term CPU power limit of more than 20 W, the Mercury EM680 is among the fastest systems built around the 6800U that we know of. It can be at least 20% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Ryzen 7 series chip has a default TDP, also known as the long-term power limit, of 15 W to 28 W, the expectation being that laptop makers will go for a higher value in exchange for higher performance. Either way, a proper cooling solution is a must.

The R7 6800U is manufactured on the 6 nm TSMC process for higher-than-average, as of mid 2023, energy efficiency.

ModelAMD Ryzen 5 7640UAMD Ryzen 7 6800U
CodenamePhoenix-U (Zen 4)Rembrandt-U (Zen 3+)
SeriesAMD Phoenix (Zen 4)AMD Rembrandt (Zen 3+)
Series: Rembrandt (Zen 3+) Rembrandt-U (Zen 3+)
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
AMD Ryzen 7 6800U « 2.7 - 4.7 GHz8 / 16 cores16 MB L3
AMD Ryzen 5 6600U compare2.9 - 4.5 GHz6 / 12 cores16 MB L3
Clock3500 - 4900 MHz2700 - 4700 MHz
L1 Cache384 KB512 KB
L2 Cache6 MB4 MB
L3 Cache16 MB16 MB
Cores / Threads6 / 12
6 x 4.9 GHz AMD Zen 4
8 / 16
TDP28 Watt28 Watt
Technology4 nm6 nm
Die Size178 mm2
max. Temp.100 °C95 °C
SocketFP7/FP7r2/FP8FP7/FP7r2
FeaturesDDR5-5600/LPDDR5x-7500 RAM, PCIe 4, Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3DDR5-4800/LPDDR5-6400 RAM (incl. ECC), PCIe 4, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
iGPUAMD Radeon 760M ( - 2600 MHz)AMD Radeon 680M ( - 2200 MHz)
Architecturex86x86
Announced
Manufacturerwww.amd.comwww.amd.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - R7 6800U
35.1 pt (58%)
Restrict / Search: Model: Max. age: years
Cinebench 2024 - Cinebench 2024 CPU Single Core
79 Points (44%)
Cinebench 2024 - Cinebench 2024 CPU Multi Core
496 Points (9%)
Cinebench R23 - Cinebench R23 Multi Core
min: 9130     avg: 10653     median: 10546 (10%)     max: 11741 Points
Cinebench R23 - Cinebench R23 Single Core
min: 878     avg: 1418     median: 1506 (63%)     max: 1534 Points
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 341     avg: 553     median: 585.5 (64%)     max: 602 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 3529     avg: 4122     median: 4083.5 (10%)     max: 4574 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 1463     avg: 1766     median: 1776 (11%)     max: 1978.53 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 142.6     avg: 225.4     median: 242 (67%)     max: 246 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
21.1 Points (27%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
2.9 Points (68%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
6450 Points (39%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
35314 Points (26%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
60447 Points (39%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
12163 Points (15%)
wPrime 2.10 - wPrime 2.0 1024m *
113.5 s (1%)
wPrime 2.10 - wPrime 2.0 32m *
4.5 s (1%)
WinRAR - WinRAR 4.0
4639 Points (7%)
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 40058     avg: 49128     median: 50614 (29%)     max: 53934 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 3398     avg: 5120     median: 5452.5 (64%)     max: 5511 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
101.1 fps (34%)
X264 HD Benchmark 4.0 - x264 Pass 1
219.5 fps (51%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 11.8     avg: 13.1     median: 13.1 (23%)     max: 14.2 fps
TrueCrypt - TrueCrypt Serpent
1 GB/s (29%)
TrueCrypt - TrueCrypt Twofish
1.5 GB/s (26%)
TrueCrypt - TrueCrypt AES
10.7 GB/s (28%)
Blender - Blender 3.3 Classroom CPU *
min: 474     avg: 516     median: 504 (6%)     max: 572 Seconds
Blender - Blender 2.79 BMW27 CPU *
min: 272     avg: 302.5     median: 304 (2%)     max: 347 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.508     avg: 0.5     median: 0.5 (11%)     max: 0.529 sec
3DMark 06 - CPU - 3DMark 06 - CPU
min: 9102     avg: 9965     median: 9964.5 (21%)     max: 10827 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
7.9 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
19.3 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
692 s (3%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 52884     avg: 55833     median: 55833 (43%)     max: 58782 Points
3DMark 11 - 3DM11 Performance Physics
min: 12198     avg: 14018     median: 14280 (35%)     max: 15136 Points
3DMark - 3DMark Ice Storm Physics
min: 51726     avg: 54789     median: 54788.5 (45%)     max: 57851 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 51601     avg: 54760     median: 54760 (44%)     max: 57919 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 58776     avg: 63558     median: 63558 (53%)     max: 68340 Points
3DMark - 3DMark Cloud Gate Physics
min: 12402     avg: 13741     median: 13574 (34%)     max: 15247 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 15312     avg: 18647     median: 18882 (34%)     max: 21992 Points
3DMark - 3DMark Time Spy CPU
min: 6355     avg: 7107     median: 7103.5 (30%)     max: 7731 Points
Geekbench 6.4 - Geekbench 6.4 Single-Core
2028 Points (51%)
Geekbench 6.4 - Geekbench 6.4 Multi-Core
8771 Points (34%)
Geekbench 6.0 - Geekbench 6.0 Single-Core
min: 1192     avg: 1607     median: 1715 (54%)     max: 1915 Points
Geekbench 6.0 - Geekbench 6.0 Multi-Core
min: 6931     avg: 7435     median: 7066 (29%)     max: 8308 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 926     avg: 1431     median: 1514 (59%)     max: 1555 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 6854     avg: 7729     median: 7678 (14%)     max: 8935 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
min: 1306     avg: 1433     median: 1462.5 (6%)     max: 1500 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
min: 7024     avg: 7646     median: 7767 (24%)     max: 8026 Points
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
min: 5657     avg: 6065     median: 6261 (63%)     max: 6278 Points
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
min: 27734     avg: 30075     median: 30925 (31%)     max: 31566 Points
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 594     avg: 690     median: 634.5 (1%)     max: 1016 ms
Octane V2 - Octane V2 Total Score
min: 43921     avg: 62717     median: 69752 (53%)     max: 74479 Points
WebXPRT 4 - WebXPRT 4 Score
min: 133.2     avg: 198.2     median: 213 (59%)     max: 221 Points
WebXPRT 3 - WebXPRT 3 Score
min: 181.3     avg: 254.9     median: 270 (48%)     max: 295 Points
CrossMark - CrossMark Overall
min: 1009     avg: 1436     median: 1481 (55%)     max: 1575 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 37.8     avg: 47.2     median: 48 (8%)     max: 55.6 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 43.3     avg: 50     median: 47 (9%)     max: 58 Watt
Power Consumption - Idle Power Consumption - external Monitor *
min: 4.62     avg: 6.8     median: 7.2 (5%)     max: 8.73 Watt
Power Consumption - Idle Power Consumption 150cd 1min *
min: 8.59     avg: 8.9     median: 8.8 (10%)     max: 9.41 Watt
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 34.1     avg: 36.2     median: 34.2 (25%)     max: 40.2 Points per Watt

Average Benchmarks AMD Ryzen 7 6800U → 0% n=0

- Range of benchmark values for this graphics card
red legend - Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

Add one or more devices and compare

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v1.33
log 26. 07:28:12

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#3 redirected to Ajax server, took 1753507692s time from redirect:0 +0s ... 0s

#4 did not recreate cache, as it is less than 5 days old! Created at Fri, 25 Jul 2025 05:17:52 +0200 +0s ... 0s

#5 composed specs +0.006s ... 0.007s

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#9 getting avg benchmarks for device 14088 +0.004s ... 0.011s

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#12 min, max, avg, median took s +0.028s ... 0.049s

#13 return log +0.001s ... 0.05s

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)