AMD Ryzen 7 PRO 9755 vs AMD Ryzen 9 8940HX Comparison

FAQ

Q: Which processor wins the majority of the head-to-head benchmarks in the database?

A: The AMD Ryzen 9 8940HX wins 8 of the 11 recorded head-to-head tests, while the AMD Ryzen 7 PRO 9755 wins 3. The Ryzen 9 8940HX takes the lead in data compression, encryption, extended instructions, prime number finding, floating point math, integer math, multithreading, and random string sorting.

Q: How large is the single-thread performance gap between the two?

A: The AMD Ryzen 7 PRO 9755 wins the single-thread test with a score of 4606, which is 15.9% higher than the AMD Ryzen 9 8940HX score of 3874. The same result appears for the passmark singlethread test, also a 15.9% advantage.

Q: In which test does the AMD Ryzen 9 8940HX show its largest winning margin?

A: The largest margin is in passmark integer math, where the AMD Ryzen 9 8940HX scores 189221 versus 122411, a 54.6% advantage. The second largest is random string sorting at 52.8% (75381 versus 49326).

Q: Is there any test where the AMD Ryzen 7 PRO 9755 wins despite having fewer cores?

A: Yes. Besides single-thread performance, the AMD Ryzen 7 PRO 9755 wins the passmark physics test with 2257 against 2104, a 6.8% advantage. The database records this as its only other win besides the single-thread tests.

Q: What are the average benchmark scores for each processor?

A: The AMD Ryzen 9 8940HX has an average benchmark score of 81103, and the AMD Ryzen 7 PRO 9755 has an average of 75738. Both processors sit at the 95th percentile among all CPUs in the database.

Q: How do the two processors compare in memory bandwidth?

A: The AMD Ryzen 7 PRO 9755 has a recorded memory bandwidth of 89.6 GB/s, while the AMD Ryzen 9 8940HX has 83.2 GB/s. Both support DDR5 memory and a dual-channel bus, but the Ryzen 7 PRO 9755 offers a higher bandwidth figure.

The Verdict

The AMD Ryzen 9 8940HX is the clear pick for multi-threaded and throughput-oriented workloads. Its 16 cores and 32 threads dominate the AMD Ryzen 7 PRO 9755 across the majority of the recorded benchmark suite, with wins in 8 of 11 tests. The database shows the Ryzen 9 8940HX leading by double-digit percentages in integer math, random string sorting, data encryption, floating point math, data compression, and multithread performance. For users running heavy parallel tasks, rendering, compression, or data processing, the Ryzen 9 8940HX is the stronger choice.

The AMD Ryzen 7 PRO 9755 is the pick for single-thread-sensitive workloads and physics simulation. It wins the single-thread test by 15.9% and the physics test by 6.8%. The Ryzen 7 PRO 9755 also offers a higher base clock of 3.80 GHz versus 2.40 GHz, and a slightly higher boost clock of 5.40 GHz versus 5.30 GHz. For workloads that rely on per-core speed or where thread scaling is limited, the Ryzen 7 PRO 9755 provides the better recorded performance.

The market segments differ too. The Ryzen 9 8940HX is a mobile processor, while the Ryzen 7 PRO 9755 is listed as a server/workstation chip. The Ryzen 7 PRO 9755 supports ECC memory, which the Ryzen 9 8940HX does not. That makes the Ryzen 7 PRO 9755 the appropriate choice for workstation or server builds where memory error correction is required. The Ryzen 9 8940HX, being a mobile part with a 55 TDP, targets high-performance laptops and portable workstations.

The verdict is straightforward: if the workload is highly parallel and thread-hungry, choose the Ryzen 9 8940HX. If the workload is single-thread-bound, physics-heavy, or requires ECC memory, choose the Ryzen 7 PRO 9755.

Head-to-Head Benchmarks

The database records 11 head-to-head tests, and the results are lopsided. The AMD Ryzen 9 8940HX wins 8 of them, and in most cases by a wide margin.

The biggest win for the Ryzen 9 8940HX is in integer math. It scores 189221 against 122411, a 54.6% lead. Random string sorting is next, with 75381 against 49326, a 52.8% lead. Data encryption shows a 74.2% lead, with 39318 versus 22577. Floating point math follows at 39.9%, with 113921 versus 81456. Data compression is 39.1% ahead, with 650984 versus 467988. Multithread performance is 28.4% ahead, with 49731 versus 38721. Find prime numbers is 27.4% ahead, with 251 versus 197. Extended instructions is 22.6% ahead, with 47802 versus 38976.

The Ryzen 7 PRO 9755 wins only three tests, but two of them are the same single-thread measurement. Its single-thread score is 4606 versus 3874, a 15.9% advantage. The physics test shows a narrower win, 2257 versus 2104, a 6.8% lead.

The pattern is clear: the Ryzen 9 8940HX leverages its 16 cores and 32 threads to produce substantially higher throughput in nearly every compute-heavy test. The Ryzen 7 PRO 9755 counters with superior per-core performance in the single-thread test and a modest win in physics.

Specification Differences

The two processors differ on nearly every core specification. The AMD Ryzen 9 8940HX has 16 cores and 32 threads, while the AMD Ryzen 7 PRO 9755 has 8 cores and 16 threads. The base clock is 2.40 GHz for the Ryzen 9 8940HX and 3.80 GHz for the Ryzen 7 PRO 9755. The boost clock is 5.30 GHz versus 5.40 GHz. The TDP is 55 watts for the Ryzen 9 8940HX and 120 watts for the Ryzen 7 PRO 9755.

The socket differs as well. The Ryzen 9 8940HX uses AMD Socket FL1, while the Ryzen 7 PRO 9755 uses AMD Socket AM5. The process node is 5 nm for the Ryzen 9 8940HX and 4 nm for the Ryzen 7 PRO 9755. Transistor count is 13,140 million for the Ryzen 9 8940HX and 8,315 million for the Ryzen 7 PRO 9755. Die size is 2x 71 mm² versus 70.6 mm².

Cache configurations differ significantly. The Ryzen 9 8940HX has 64 KB L1 per core, 1 MB L2 per core, and 64 MB L3. The Ryzen 7 PRO 9755 has 80 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3. Memory bandwidth is 83.2 GB/s for the Ryzen 9 8940HX and 89.6 GB/s for the Ryzen 7 PRO 9755.

ECC memory support is exclusive to the Ryzen 7 PRO 9755. PCIe lanes also differ: the Ryzen 9 8940HX has Gen 5 with 28 lanes, while the Ryzen 7 PRO 9755 has Gen 5 with 24 lanes. The integrated graphics are Radeon 610M on the Ryzen 9 8940HX and Radeon Graphics on the Ryzen 7 PRO 9755. The multiplier is unlocked on the Ryzen 9 8940HX but locked on the Ryzen 7 PRO 9755.

Architecture Differences

The architectural split is significant. The AMD Ryzen 9 8940HX is built on Zen 4 architecture with the codename Dragon Range, belonging to the 8000 series. The AMD Ryzen 7 PRO 9755 uses Zen 5 architecture with the codename Granite Ridge, belonging to the 9000 series. The generations are listed as Ryzen 9 (Zen 4 Dragon Range) for the 8940HX and Ryzen 7 (Zen 5 Granite Ridge) for the 9755.

The process node differs, with the Ryzen 9 8940HX on 5 nm and the Ryzen 7 PRO 9755 on 4 nm, both fabricated by TSMC. The Ryzen 9 8940HX uses a dual-die design with 2x 71 mm² dies, while the Ryzen 7 PRO 9755 uses a single die of 70.6 mm². Transistor counts reflect the different designs: 13,140 million on the 8940HX and 8,315 million on the 9755.

Cache architecture differs in L1 size and L3 layout. The Ryzen 9 8940HX has 64 KB L1 per core and 64 MB total L3, while the Ryzen 7 PRO 9755 has 80 KB L1 per core and 32 MB shared L3. The L2 cache is identical at 1 MB per core.

The Ryzen 9 8940HX is classified as a mobile part with a 55 TDP, while the Ryzen 7 PRO 9755 is a server/workstation part with a 120 TDP. The Ryzen 7 PRO 9755 supports ECC memory, a feature absent on the Ryzen 9 8940HX. The Ryzen 9 8940HX has an unlocked multiplier, which the Ryzen 7 PRO 9755 lacks.

Where Each One Wins

The AMD Ryzen 9 8940HX wins in all multi-threaded and throughput-heavy scenarios. Its 16 cores and 32 threads deliver a 54.6% lead in integer math and a 52.8% lead in random string sorting. It is 74.2% ahead in data encryption, 39.9% ahead in floating point math, and 39.1% ahead in data compression. The multithread test shows a 28.4% advantage. For any task that scales across cores, such as video encoding, 3D rendering, batch data processing, or scientific computing, the Ryzen 9 8940HX is the superior processor based on the recorded data.

The AMD Ryzen 7 PRO 9755 wins in single-thread performance and physics simulation. The single-thread score of 4606 beats the 3874 of the Ryzen 9 8940HX by 15.9%. The physics test also goes to the Ryzen 7 PRO 9755, with 2257 versus 2104, a 6.8% lead. The higher base clock of 3.80 GHz and boost clock of 5.40 GHz support these results. For applications that rely heavily on single-core speed, such as legacy software, certain games, or lightly-threaded productivity tools, the Ryzen 7 PRO 9755 offers the better performance.

The Ryzen 7 PRO 9755 also wins in server and workstation contexts due to ECC memory support and its classification as a server/workstation part. The Ryzen 9 8940HX, with its 55 TDP and mobile socket, is the clear choice for high-performance laptops and mobile workstations. The data supports a clean separation: choose the Ryzen 9 8940HX for parallel throughput in a mobile form factor, and choose the Ryzen 7 PRO 9755 for single-thread speed, physics workloads, and ECC-enabled workstation builds.