AMD Ryzen 7 7840S
The AMD Ryzen 7 7840S is a fast high-end laptop processor of the Phoenix series. It offers 8 cores (octa core) based on the Zen 4 architecture that supports hyperthreading (16 threads). The cores clock from 3.8 (base) up to 5.1 GHz (single core boost). The processor includes 8 MB L2 cache and 16 MB L3 cache. The processor is exclusively available in Lenovo laptops but the specs are similar to the regular Ryzen 7 7840HS.
The performance of the R7 7840S is only slightly below the fastest model, the R9 7940HS, as the clock speed difference is only minimal (e.g. -100 MHz / 2% slower single core boost). Therefore, the CPU should also perform slightly higher than the old top model Ryzen 9 6980HX (8 Zen 3 cores with up to 4.9 GHz) at 54W TDP and Ryzen 9 6980HS at 35W TDP. Compared to the higher end Dragon Range series, the 7840HS should be similar to the Ryzen 7 7745HX (also 8 Zen 4 cores, max 5.1 GHz, 55W TDP, 32 MB L3).
The chip integrates a modern and fasts RDNA 3 graphics card (iGPU) called Radeon 780M with 12 CUs and up to 2.7 GHz clock speed. Furthermore, the Phoenix series include a video engine with AV1 de- and encoding, a new Xilinx FPGA based XDNA AI accelerator (Ryzen AI) that should be faster than the AI engine in the Apple M2 SOC and a dual-channel DDR5-5600 / LPDDR5x-7500 memory controller (with ECC support). The connectivity features includes 2 possible USB 4 (40 Gbps) ports and 20 PCIe 4.0 lanes for a GPU and SSDs.
The Phoenix series uses a single monolithic design (unlike the chiplet design of the 7045HX series) and is manufactured in the modern 4nm process at TSMC. The TDP can be configured between 35 and 45 Watt.
Series AMD Phoenix (Zen 4, Ryzen 7040) Codename Phoenix-HS (Zen 4) Series: Phoenix (Zen 4, Ryzen 7040) Phoenix-HS (Zen 4) Clock Rate 3800 - 5100 MHz Level 1 Cache 512 KB Level 2 Cache 8 MB Level 3 Cache 16 MB Number of Cores / Threads 8 / 16 Power Consumption (TDP = Thermal Design Power) 35 Watt Manufacturing Technology 4 nm Die Size 178 mm2 Max. Temperature 100 °C Socket FP7/FP7r2/FP8 Features DDR5-5600/LPDDR5x-7500 RAM (incl. ECC), 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 GPU AMD Radeon 780M ( - 2700 MHz)64 Bit 64 Bit support Architecture x86 Announcement Date 01/05/2023 Product Link (external) www.amd.com
Benchmarks Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
44.3 pt (61%)
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Cinebench 2024 - CB24 CPU Single Core
103 Points (72%)
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Cinebench 2024 - CB24 CPU Multi Core
853 Points (16%)
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Cinebench R23 - Cinebench R23 Multi Core
15102 Points (14%)
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Cinebench R23 - Cinebench R23 Single Core
1761 Points (75%)
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Cinebench R20 - Cinebench R20 CPU (Single Core)
685 Points (76%)
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Cinebench R20 - Cinebench R20 CPU (Multi Core)
5912 Points (14%)
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Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 1005.76 avg: 1901 median: 2222.8 (14%) max: 2475 Points
CPU TDP ? TDP 42 W 65% 100%
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0 125 250 375 500 625 750 875 1000 1125 1250 1375 1500 1625 1750 1875 2000 2125 2250 2375 Tooltip Lenovo Yoga Slim 7 14APU G8 Battery Saver: Ø1037 (1005.76-1049.54)
Lenovo Yoga Slim 7 14APU G8 Intelligent Cooling: Ø2063 (1988.37-2222.84)
Lenovo Yoga Slim 7 14APU G8 High Performance: Ø2351 (2319.11-2475.4)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
274 Points (83%)
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Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
28.6 Points (37%)
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Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
3.3 Points (83%)
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Cinebench R10 - Cinebench R10 Rend. Single (32bit)
7579 points (46%)
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Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
45931 points (33%)
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wPrime 2.10 - wPrime 2.0 1024m *
341.9 s (4%)
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VIA C3-M C3-M-1200
wPrime 2.10 - wPrime 2.0 32m *
10.2 s (2%)
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20369 points (32%)
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7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
64696 MIPS (37%)
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7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
6328 MIPS (76%)
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HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
18.6 fps (33%)
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0 5 10 15 20 Tooltip Lenovo Yoga Slim 7 14APU G8: Ø18.2 (0.46-20.9)
TrueCrypt - TrueCrypt Serpent
1.2 GB/s (0%)
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TrueCrypt - TrueCrypt Twofish
1.9 GB/s (33%)
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TrueCrypt - TrueCrypt AES
12.9 GB/s (34%)
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Blender - Blender 3.3 Classroom CPU *
347 Seconds (4%)
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Blender - Blender 2.79 BMW27 CPU *
213 Seconds (2%)
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R Benchmark 2.5 - R Benchmark 2.5 *
0.4 sec (10%)
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3DMark 06 - CPU - 3DMark 06 - CPU
14547 Points (31%)
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Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
7.4 s (2%)
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Intel Core i5-11500B
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VIA C3-M C3-M-1200
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
18.1 s (1%)
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
653 s (3%)
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VIA C3-M C3-M-1200
3DMark 11 - 3DM11 Performance Physics
20801 Points (56%)
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3DMark - 3DMark Fire Strike Standard Physics
26235 Points (47%)
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3DMark - 3DMark Time Spy CPU
9676 Points (41%)
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Geekbench 6.2 - Geekbench 6.2 Single-Core
2605 points (79%)
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Geekbench 6.2 - Geekbench 6.2 Multi-Core
12598 points (50%)
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Single-Core
1939 points (82%)
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
11288 points (20%)
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Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
553 ms (1%)
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Octane V2 - Octane V2 Total Score
91068 Points (82%)
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WebXPRT 4 - WebXPRT 4 Score
min: 247 avg: 247.5 median: 247.5 (71%) max: 248 Points
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WebXPRT 3 - WebXPRT 3 Score
296 Points (62%)
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CrossMark - CrossMark Overall
1655 Points (63%)
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Power Consumption - Prime95 Power Consumption - external Monitor *
64.2 Watt (11%)
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 Tooltip Lenovo Yoga Slim 7 14APU G8: Ø64.2 (62.1-66.3)
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
66.1 Watt (12%)
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 Tooltip Lenovo Yoga Slim 7 14APU G8: Ø66.1 (65.7-66.3)
Power Consumption - Idle Power Consumption - external Monitor *
8.4 Watt (6%)
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0 1 2 3 4 5 6 7 8 9 10 Tooltip Lenovo Yoga Slim 7 14APU G8: Ø8.35 (7.63-10.8)
Power Consumption - Idle Power Consumption 150cd 1min *
10.3 Watt (11%)
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0 1 2 3 4 5 6 7 8 9 10 11 Tooltip Lenovo Yoga Slim 7 14APU G8: Ø10.3 (9.81-11.5)
Power Consumption - Cinebench R15 Multi Power Efficiency - external Monitor
37.4 Points per Watt (28%)
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- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
v1.26
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#8 min, max, avg, median took s +0.735s ... 0.775s
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Other CPUs of the series Phoenix (Zen 4, Ryzen 7040) Surrounding CPUs
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- Average benchmark values for this graphics card
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