AMD Ryzen 7 8745HX vs AMD Ryzen Embedded 9900X Comparison

# Head-to-Head Benchmarks

The database contains PassMark results for the AMD Ryzen 7 8745HX, while the AMD Ryzen Embedded 9900X has no recorded benchmark scores in the current dataset. This makes a direct score-for-score comparison impossible. The Ryzen 7 8745HX carries an average benchmark score of 60,104, placing it at the 92nd percentile among all CPUs tracked in the database. Its nearest rivals include the AMD Ryzen 9 7945HX at 60,099, the Intel Core i9-14900F at 60,008, the AMD Ryzen 9 7945HX3D at 59,641, and the Intel Xeon Gold 6338T at 60,572. The Ryzen 7 8745HX sits within 0.8% of all four of these parts, with the largest gap being a 0.8% deficit to the Xeon Gold 6338T and a 0.8% advantage over the Ryzen 9 7945HX3D.

Looking at the individual PassMark subtests for the Ryzen 7 8745HX, the strongest showings are in data compression at 363,759, integer math at 100,328, and floating point math at 61,972. The single-thread score is 3,879, while the multithread score is 31,517. The extended instruction score is 27,638, data encryption reaches 21,840, and random string sorting lands at 44,494. The physics score is 1,681, and the prime number search score is 159. These results indicate a well-rounded mobile processor, particularly strong in integer-heavy and compression workloads.

Because the Ryzen Embedded 9900X has no benchmark entries, the database cannot confirm its performance relative to the 8745HX. The 9900X holds a 50th percentile rating based on its specifications, though this figure is not derived from measured scores. The data set records no head-to-head benchmark results and no wins for either processor in direct comparisons.

# FAQ

Q: Does the database show which processor is faster in multi-threaded workloads?

A: No. The Ryzen 7 8745HX has a recorded PassMark multithread score of 31,517, but the Ryzen Embedded 9900X has no benchmark scores in the database. Without measured data for the 9900X, no direct multi-thread comparison can be made.

Q: How does the Ryzen 7 8745HX compare to other high-end CPUs in its performance class?

A: The 8745HX scores 0% different from the AMD Ryzen 9 7945HX, 0.2% higher than the Intel Core i9-14900F, 0.8% higher than the AMD Ryzen 9 7945HX3D, and 0.8% lower than the Intel Xeon Gold 6338T. These four rivals all fall within a 0.8% window of the 8745HX.

Q: What is the Ryzen 7 8745HX's strongest recorded workload?

A: Data compression produces the highest raw score for the 8745HX at 363,759, followed by integer math at 100,328 and floating point math at 61,972.

Q: Does the Ryzen Embedded 9900X support ECC memory?

A: Yes. The Ryzen Embedded 9900X lists ECC memory support as true. The Ryzen 7 8745HX does not support ECC memory.

Q: Which processor has a higher boost clock?

A: The Ryzen Embedded 9900X has a boost clock of 5.60 GHz, while the Ryzen 7 8745HX boosts to 5.10 GHz.

Q: Are both processors unlocked for overclocking?

A: Yes. Both the Ryzen 7 8745HX and the Ryzen Embedded 9900X have their multiplier unlocked.

# Architecture Differences

The two processors come from different architectural generations and are built for different market segments. The Ryzen 7 8745HX uses Zen 4 architecture under the Dragon Range codename and belongs to the 8000 series. It is fabricated on a 5 nm process at TSMC and contains 6,570 million transistors on a 71 mm² die. The Ryzen Embedded 9900X uses Zen 5 architecture under the Granite Ridge codename and belongs to the 9000 series. It is fabricated on a 4 nm process at TSMC and contains 16,630 million transistors across a dual-die design with two 70.6 mm² dies.

The cache hierarchies differ in capacity and organization. The 8745HX provides 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 32 MB of shared L3 cache. The 9900X provides 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. This gives the 9900X double the L3 capacity and a larger per-core L1 allocation.

Both processors support DDR5 memory in a dual-channel configuration. The 8745HX has a recorded memory bandwidth of 83.2 GB/s, while the 9900X reaches 89.6 GB/s. The 9900X supports ECC memory, which the 8745HX does not.

The integrated graphics differ as well. The 8745HX uses a Radeon 610M iGPU, while the 9900X lists a generic Radeon Graphics solution. PCIe support is Gen 5 for both, but the 8745HX provides 28 CPU lanes while the 9900X provides 24 CPU lanes.

# Specification Differences

The Ryzen 7 8745HX and Ryzen Embedded 9900X differ across nearly every major specification field in the database.

Core and thread counts are a primary split. The 8745HX has 8 cores and 16 threads. The 9900X has 12 cores and 24 threads, a 50% increase in both cores and threads.

Clock speeds favor the 9900X. The 8745HX has a base clock of 3.60 GHz and a boost clock of 5.10 GHz. The 9900X starts at 4.40 GHz base and boosts to 5.60 GHz.

Thermal design power differs substantially. The 8745HX is rated at 55 W TDP, while the 9900X is rated at 120 W TDP.

The socket and market segment are entirely different. The 8745HX uses AMD Socket FL1 and is classified as a mobile processor. The 9900X uses AMD Socket AM5 and is classified as a desktop processor.

Other differences include memory bandwidth, ECC support, process node, transistor count, die size, and cache capacity, all detailed in the architecture section above.

The release dates differ by several months. The 8745HX was released on April 22, 2025. The 9900X was released on October 6, 2025.

Neither processor has a launch MSRP recorded in the database.

# Where Each One Wins

The Ryzen 7 8745HX has measurable wins in the database because it has benchmark scores. Its 92nd percentile ranking among all CPUs and an average score of 60,104 place it in the upper tier of tracked processors. It matches or slightly exceeds several flagship desktop and mobile parts from both AMD and Intel, including the Ryzen 9 7945HX, the Core i9-14900F, and the Ryzen 9 7945HX3D. For mobile workloads that benefit from high single-thread performance, the 8745HX delivers a single-thread score of 3,879 and a multithread score of 31,517.

The Ryzen Embedded 9900X has no recorded benchmark wins in the database. Its strengths are entirely specification-based. It offers 12 cores and 24 threads, higher base and boost clocks, a newer Zen 5 architecture on a 4 nm process, double the L3 cache, ECC memory support, and higher memory bandwidth at 89.6 GB/s. These specifications suggest an advantage in heavily threaded, memory-sensitive, or reliability-critical workloads, but the database contains no measured results to confirm this.

The 8745HX is the only one of the two with confirmed performance data. The 9900X remains unverified in the database, so its real-world standing cannot be established from recorded measurements.

# The Verdict

The database provides a clear picture for the Ryzen 7 8745HX and an incomplete one for the Ryzen Embedded 9900X. The 8745HX has a full set of PassMark scores, a 92nd percentile ranking, and an average benchmark score of 60,104 that places it within 0.8% of four strong rivals. Buyers looking at the 8745HX can rely on confirmed data showing competitive performance in both single-thread and multithread tasks, with particularly strong results in data compression and integer math.

The Ryzen Embedded 9900X cannot be evaluated on measured performance because the database has no benchmark entries for it. Its specifications point to a higher-core-count, higher-clock, higher-TDP part with newer architecture, larger cache, and ECC support. Those specifications are meaningful for embedded and desktop applications where thread count, memory integrity, and raw clock speed matter. However, the lack of recorded scores means its performance level is unverified.

For a mobile processor with confirmed high-end performance, the Ryzen 7 8745HX is the documented choice. For an embedded desktop processor with a stronger specification sheet but no measured results, the Ryzen Embedded 9900X is the unverified option. The data supports choosing the 8745HX when proven performance matters, and the 9900X only when its listed specifications align with specific workload requirements and its unmeasured performance is acceptable.