AMD Ryzen 7 3800X vs AMD Ryzen 7 8845HS Comparison

The AMD Ryzen 7 8845HS and the AMD Ryzen 7 3800X are both 8-core, 16-thread processors, but they serve entirely different markets and performance profiles. The database records 17 head-to-head benchmark comparisons, with the mobile 8845HS winning 13 of them and the desktop 3800X winning 4. The 8845HS dominates in most modern workloads, while the 3800X retains specific advantages in certain older and single-threaded tests.

Where Each One Wins

The AMD Ryzen 7 8845HS is the clear winner in the vast majority of recorded workloads. Its largest victories come in floating-point math, where it scores 59,254 versus 39,759 for the 3800X, a 49% advantage. Integer math also favors the 8845HS by 44.3%, with scores of 97,747 against 67,725. The mobile chip wins in Cinebench R15 multi-core by 30.4% (2,575 versus 1,974) and in Geekbench multi-core by 29.3% (12,212 versus 9,446). The 8845HS also takes extended instructions by 28%, random string sorting by 26.1%, and multithread by 23.7%. Data compression is 13% better, physics is 9.9% better, and data encryption is 5.6% better. Single-thread performance in Passmark strongly favors the 8845HS with a 37.8% lead (3,738 versus 2,712).

The AMD Ryzen 7 3800X wins in Cinebench R23 multi-core, scoring 19,588 versus the 8845HS's 16,192, a 17.3% advantage. It also wins Cinebench R23 single-core by 36% (2,765 versus 1,769) and Cinebench R15 single-core by a narrow 0.7% (278 versus 276). The 3800X also posts a 15.5% higher score in the prime number finding test (103 versus 87). These wins suggest the older desktop chip holds a distinct edge in Cinebench's newer rendering workloads and in specific integer-heavy tasks.

The use-case split is clear: the 8845HS excels in general computing, encryption, compression, and floating-point operations, while the 3800X retains leadership in Cinebench R23 and prime-number calculations. For most users running modern applications, the 8845HS offers the broader performance advantage.

Architecture Differences

The two processors come from different generations and manufacturing nodes. The 8845HS uses the Zen 4 architecture with the Hawk Point codename, built on TSMC's 4 nm process with 25,000 million transistors on a 178 mm² die. The 3800X uses Zen 2 with the Matisse codename, built on TSMC's 7 nm process with 3,800 million transistors on a 74 mm² die. The 8845HS is part of the 8000 series, while the 3800X belongs to the 3000 series.

Cache structures differ significantly. Both have 64 KB of L1 cache per core, but the 8845HS has 1 MB of L2 per core, double the 512 KB per core on the 3800X. The L3 cache is reversed: the 8845HS has 16 MB shared, while the 3800X has 32 MB shared. This gives the desktop chip twice the total L3 capacity, which may explain its stronger performance in certain cache-sensitive workloads like Cinebench R23.

Memory support also differs. The 8845HS supports DDR5 memory with dual-channel configuration and a bandwidth of 89.6 GB/s. The 3800X supports DDR4 with dual-channel configuration and 51.2 GB/s bandwidth. The 8845HS has nearly 75% more memory bandwidth, which contributes to its advantages in data-heavy tasks. PCIe connectivity is Gen 4 on both, but the 3800X offers 24 lanes versus 20 lanes on the 8845HS.

The 8845HS includes integrated Radeon 780M graphics, while the 3800X has no integrated graphics. The 8845HS uses the AMD Socket FP8 and targets the mobile market, while the 3800X uses AMD Socket AM4 and targets desktop systems. The 3800X has an unlocked multiplier for overclocking; the 8845HS does not. The 3800X has a 105 W TDP, while the 8845HS is rated at 45 W, reflecting the mobile design's power efficiency.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD Ryzen 7 8845HS boosts to 5.10 GHz, while the AMD Ryzen 7 3800X boosts to 4.50 GHz. The 8845HS has a 0.6 GHz advantage in boost frequency.

Q: Which processor offers more L3 cache?

A: The AMD Ryzen 7 3800X has 32 MB of shared L3 cache, while the AMD Ryzen 7 8845HS has 16 MB. The 3800X has double the L3 capacity.

Q: Are these processors compatible with the same motherboard socket?

A: No. The AMD Ryzen 7 8845HS uses AMD Socket FP8, while the AMD Ryzen 7 3800X uses AMD Socket AM4. They are not interchangeable.

Q: Which processor wins in Cinebench R23 multi-core?

A: The AMD Ryzen 7 3800X wins Cinebench R23 multi-core with a score of 19,588, which is 17.3% higher than the 16,192 scored by the AMD Ryzen 7 8845HS.

Q: Does either processor support DDR5 memory?

A: Only the AMD Ryzen 7 8845HS supports DDR5 memory. The AMD Ryzen 7 3800X supports DDR4 memory.

Q: Which processor has integrated graphics?

A: The AMD Ryzen 7 8845HS includes Radeon 780M integrated graphics. The AMD Ryzen 7 3800X has no integrated graphics.

Specification Differences

The two processors differ in several key specification areas. The 8845HS has a base clock of 3.80 GHz and a boost clock of 5.10 GHz, while the 3800X has a base clock of 3.90 GHz and a boost clock of 4.50 GHz. The 3800X has a higher base clock, but the 8845HS has a significantly higher boost clock.

The 8845HS has a TDP of 45 W, while the 3800X has a TDP of 105 W. This reflects the mobile versus desktop design philosophy. The 8845HS uses the Zen 4 architecture on a 4 nm process, while the 3800X uses Zen 2 on a 7 nm process. The 8845HS has 25,000 million transistors and a 178 mm² die, while the 3800X has 3,800 million transistors and a 74 mm² die.

The 8845HS has 1 MB of L2 cache per core and 16 MB of shared L3 cache. The 3800X has 512 KB of L2 per core and 32 MB of shared L3. Memory support differs: the 8845HS uses DDR5 with 89.6 GB/s bandwidth, while the 3800X uses DDR4 with 51.2 GB/s bandwidth. The 3800X offers 24 PCIe Gen 4 lanes, while the 8845HS offers 20. The 8845HS has Radeon 780M integrated graphics; the 3800X has none. The 3800X has an unlocked multiplier; the 8845HS does not. The 3800X was released on 2019-07-06, while the 8845HS was released on 2023-12-05.

Head-to-Head Benchmarks

The biggest win for the AMD Ryzen 7 8845HS is in Passmark floating-point math, where it scores 59,254 against 39,759, a 49% advantage. This is followed by integer math with a 44.3% lead (97,747 versus 67,725). In Passmark single-thread, the 8845HS scores 3,738 versus 2,712, a 37.8% advantage. Cinebench R15 multi-core shows a 30.4% lead for the 8845HS (2,575 versus 1,974), and Geekbench multi-core shows a 29.3% lead (12,212 versus 9,446). Geekbench single-core favors the 8845HS by 24.2% (2,081 versus 1,675). Extended instructions are 28% better, random string sorting is 26.1% better, and multithread is 23.7% better. Data compression is 13% better, physics is 9.9% better, and data encryption is 5.6% better.

The biggest win for the AMD Ryzen 7 3800X is in Cinebench R23 single-core, where it scores 2,765 versus 1,769, a 36% advantage. Cinebench R23 multi-core also favors the 3800X by 17.3% (19,588 versus 16,192). The 3800X wins Passmark find prime numbers by 15.5% (103 versus 87). Cinebench R15 single-core is essentially a tie, with the 3800X winning by just 0.7% (278 versus 276).

The data shows a clear split. The 8845HS dominates in Geekbench, Passmark, and Cinebench R15, while the 3800X wins decisively in Cinebench R23 and prime number finding. The 8845HS's wins tend to be larger in magnitude, with several above 25%, while the 3800X's biggest win is 36% in a single workload.

The Verdict

The AMD Ryzen 7 8845HS is the better overall processor for most tasks. It wins 13 of 17 recorded benchmarks, including all Geekbench tests, all Passmark tests except prime numbers, and Cinebench R15. Its advantages in floating-point math (49%), integer math (44.3%), and single-thread performance (37.8%) make it the stronger choice for general productivity, content creation, and everyday computing. The 8845HS also consumes far less power with a 45 W TDP versus 105 W, making it suitable for mobile systems.

The AMD Ryzen 7 3800X is the better choice specifically for Cinebench R23 workloads. It wins Cinebench R23 multi-core by 17.3% and Cinebench R23 single-core by 36%. This indicates an advantage in rendering workloads that use the Cinebench R23 engine. The 3800X also wins the prime number finding test by 15.5%, suggesting an edge in certain integer-heavy calculations. Its larger 32 MB L3 cache and DDR4 memory support may contribute to these specific results.

For users running Cinebench R23 as their primary benchmark, the 3800X is the stronger performer. For users running a broader mix of modern applications, including Geekbench, Passmark, and Cinebench R15, the 8845HS offers superior performance. The 3800X has the advantage of an unlocked multiplier and a desktop AM4 socket, which allows for overclocking and system upgrades within that platform. The 8845HS provides integrated Radeon 780M graphics, which eliminates the need for a separate graphics card in basic systems. The data clearly favors the 8845HS for its overall score distribution, while the 3800X remains relevant for specific rendering and integer workloads.