AMD Ryzen 3 7335U vs AMD Ryzen 3 8440U Comparison

The AMD Ryzen 3 7335U and AMD Ryzen 3 8440U are both 4-core, 8-thread mobile processors, but benchmark data shows they are not interchangeable. The Ryzen 3 8440U takes the majority of head-to-head wins, claiming 13 of 17 tests, while the Ryzen 3 7335U secures 4 wins. The average benchmark scores are close—16827 for the 7335U versus 16663 for the 8440U—placing both in the 70th percentile of all CPUs, yet the distribution of wins reveals distinct strengths.

Head-to-Head Benchmarks

The Ryzen 3 8440U’s most decisive victories come in single-threaded workloads. In PassMark single-thread tests, it scores 3648 against the 7335U’s 3053, a 16.3% advantage. This pattern repeats in Cinebench single-core runs: the 8440U leads by 1.3% in R15 (154 vs 152), 1.7% in R20 (645 vs 634), and 1.6% in R23 (1536 vs 1511). The boost clock difference—4.70 GHz versus 4.30 GHz—likely drives this consistent edge.

Multi-core results favor the 8440U more modestly. In Cinebench R23 multi-core, it scores 10884 versus 10703, a 1.7% lead. The R20 multi-core gap is also 1.7% (4571 vs 4495), and R15 shows the same 1.7% delta (1097 vs 1078). The PassMark multithread test mirrors this: 12805 vs 12592, another 1.7% advantage. These margins are small but uniform, indicating the 8440U’s architecture extracts more throughput from the same core and thread counts.

The 8440U also wins in several specialized tests. In PassMark find prime numbers, it scores 43 versus 36, a 16.3% jump. Random string sorting shows a 13.3% lead (17725 vs 15361), and extended instructions favor the 8440U by 6.7% (11059 vs 10314). Physics performance is 5.5% higher (685 vs 647).

The 7335U’s wins are concentrated in specific workloads. Its largest victory is in data encryption, scoring 9335 versus 8012—a massive 16.5% advantage. Integer math also favors the 7335U by 13.4% (42493 vs 37468), and floating point math is 5.6% ahead (24298 vs 23017). Data compression is a near tie: 146309 vs 146273, a 0% delta that technically goes to the 7335U.

Where Each One Wins

The Ryzen 3 8440U is the clear choice for general productivity and single-threaded responsiveness. Its wins in every Cinebench test—both single and multi-core—plus PassMark multithread and single-thread benchmarks indicate superior performance in rendering, office applications, and everyday tasks. The 16.3% lead in PassMark single-thread and 13.3% in random string sorting suggest faster handling of user-facing operations and data manipulation.

The 7335U dominates computational math workloads. Its 16.5% edge in data encryption is substantial, making it preferable for security-related tasks like VPNs or disk encryption. The 13.4% lead in integer math and 5.6% in floating point math point to strengths in scientific computing, financial modeling, or any workload relying heavily on arithmetic operations. The near-identical data compression scores (146309 vs 146273) mean either processor handles compression equally well.

For gaming or graphics-adjacent workloads, the integrated GPU differs—Radeon 660M on the 7335U versus Radeon 740M on the 8440U—but the benchmark data does not include GPU tests. Based on CPU results alone, the 8440U’s higher boost clock and single-thread performance would likely benefit game logic, while the 7335U’s math strengths could help in physics simulations.

Architecture Differences

The fundamental split is architectural. The Ryzen 3 7335U uses Zen 3+ architecture on TSMC’s 6 nm process, with the codename Rembrandt-R. The Ryzen 3 8440U moves to Zen 4 on a 4 nm node, codenamed Hawk Point. The process shrink from 6 nm to 4 nm is significant, enabling higher clock speeds and improved efficiency.

Cache hierarchies differ notably. Both share 64 KB L1 per core and 8 MB L3, but the L2 cache doubles: the 7335U has 512 KB per core, while the 8440U has 1 MB per core. This larger L2 likely contributes to the 8440U’s wins in random string sorting and prime number finding, which benefit from data locality.

Transistor count and die size show the process advantage. The 8440U packs 20,900 million transistors on a 137 mm² die, whereas the 7335U’s die size is 208 mm² with no transistor count listed. The smaller die for the 8440U, despite more transistors, reflects the denser 4 nm process.

Memory bandwidth also improves: the 7335U offers 76.8 GB/s, while the 8440U reaches 89.6 GB/s. Both support DDR5 dual-channel memory, but the higher bandwidth on the 8440U can aid memory-intensive tasks.

Specification Differences

The two processors share several specs: both have 4 cores, 8 threads, a 3.00 GHz base clock, a 28 W TDP, and the AMD Socket FP7. The differences are as follows:

• Boost clock: 7335U at 4.30 GHz, 8440U at 4.70 GHz
• Architecture: Zen 3+ vs Zen 4
• Codename: Rembrandt-R vs Hawk Point
• Process node: 6 nm vs 4 nm
• L2 cache: 512 KB per core vs 1 MB per core
• Die size: 208 mm² vs 137 mm²
• Memory bandwidth: 76.8 GB/s vs 89.6 GB/s
• ECC support: True on 7335U, false on 8440U
• PCIe lanes: 20 lanes (Gen 4) on 7335U, 14 lanes (Gen 4) on 8440U
• Integrated graphics: Radeon 660M vs Radeon 740M
• Release date: 2023-01-03 vs 2023-12-05

The 7335U offers ECC memory support and more PCIe lanes, which may matter for certain workstation or server-like uses. The 8440U counters with a higher boost clock, more L2 cache, and greater memory bandwidth.

FAQ

Q: Which processor has a higher single-thread performance?

A: The Ryzen 3 8440U wins all single-core Cinebench tests and PassMark single-thread. Its PassMark single-thread score is 3648 versus 3053, a 16.3% lead, and its Cinebench R23 single-core score is 1536 versus 1511.

Q: Is the Ryzen 3 7335U better in any benchmark?

A: Yes. It wins data encryption (9335 vs 8012, 16.5% ahead), integer math (42493 vs 37468, 13.4% ahead), floating point math (24298 vs 23017, 5.6% ahead), and data compression by a marginal 0% delta.

Q: How do the two compare in multi-core rendering?

A: The 8440U leads consistently by about 1.7% across Cinebench R15, R20, and R23 multi-core tests. Its R23 score is 10884 versus 10703 for the 7335U.

Q: What is the architectural difference between the two?

A: The 7335U uses Zen 3+ on a 6 nm process (Rembrandt-R), while the 8440U uses Zen 4 on a 4 nm process (Hawk Point). The 8440U also doubles L2 cache to 1 MB per core and increases memory bandwidth to 89.6 GB/s.

Q: Do both processors support ECC memory?

A: No. The Ryzen 3 7335U supports ECC memory, while the Ryzen 3 8440U does not.

Q: Which processor has more PCIe lanes?

A: The Ryzen 3 7335U provides 20 PCIe Gen 4 lanes, whereas the Ryzen 3 8440U provides 14 PCIe Gen 4 lanes.