AMD Ryzen 5 5600X3D vs AMD Ryzen 7 5825U Comparison

The AMD Ryzen 7 5825U and AMD Ryzen 5 5600X3D are both 5000-series Zen 3 parts, but they target entirely different platforms and power envelopes. The 5825U is a 15-watt mobile processor with 8 cores and 16 threads, while the 5600X3D is a 105-watt desktop chip with 6 cores and 12 threads. The benchmark data shows a clear split: the 5600X3D wins 15 of 17 head-to-head tests, often by massive margins, while the 5825U takes only two math-specific workloads. However, the 5825U carries an integrated Radeon Vega 8 GPU and fits in a low-power mobile socket, making it the only choice for thin-and-light systems. The 5600X3D, with its 96 MB of shared L3 cache, dominates multi-core and single-core rendering, but its desktop-only socket and lack of integrated graphics limit its use cases.

The Verdict

The data points to a straightforward conclusion: the AMD Ryzen 5 5600X3D is the superior processor for raw performance in nearly every measurable way. It wins 15 of 17 head-to-head benchmarks, including decisive victories in Cinebench R23 multi-core (18603 vs 10152, a 45.4% lead) and single-core (2626 vs 1452, a 44.7% lead). The 5600X3D also holds a 22.4% advantage in both Geekbench multi-core and single-core tests. Its average benchmark score of 25365 sits just 0.2% below the Intel Core i7-11700KF, placing it in the 77th percentile of all CPUs. This is a desktop part for users who prioritize compute throughput, particularly in rendering, physics simulation, and prime number calculations.

The AMD Ryzen 7 5825U, by contrast, is a mobile chip with a 78th percentile ranking and an average score of 25446, which is effectively tied with the 5600X3D (0.3% difference) despite its much lower 15-watt TDP. Its wins are limited to PassMark floating-point math (38482 vs 37464, a 2.7% lead) and integer math (72577 vs 65587, a 10.7% lead). The 5825U is the pick for anyone building or buying a fanless or low-power laptop, as it includes Radeon Vega 8 graphics and fits the FP6 socket. The 5600X3D, with a launch MSRP of $229, is end-of-life and requires a discrete GPU, making it unsuitable for compact or power-sensitive builds. Choose the 5600X3D for desktop performance; choose the 5825U for mobility and integrated graphics.

Architecture Differences

Both processors share the Zen 3 architecture and are built on TSMC's 7 nm process node, but their physical designs diverge sharply. The 5825U, codenamed Barcelo, packs 8 cores and 16 threads into a 180 mm² die with 10,700 million transistors. It uses an AMD Socket FP6, supports DDR4 memory with a dual-channel bus and 51.2 GB/s bandwidth, and offers PCIe Gen 3 with 16 CPU lanes. Its cache layout is modest: 64 KB L1 per core, 512 KB L2 per core, and 16 MB of shared L3. The chip also integrates Radeon Vega 8 graphics, making it a complete system-on-chip for mobile devices. Its base clock is 2000 MHz with a 4.50 GHz boost, and it supports ECC memory.

The 5600X3D, codenamed Vermeer, uses a smaller 74 mm² die with 6 cores and 12 threads. It fits an AMD Socket AM4 and also supports DDR4 with dual-channel memory and 51.2 GB/s bandwidth, but its PCIe implementation is newer: Gen 4 with 20 CPU lanes. The defining difference is cache: the 5600X3D features 96 MB of shared L3, six times the 5825U's 16 MB. This large L3 pool is the key architectural advantage, explaining its dominance in cache-sensitive workloads. Its base clock is 3300 MHz with a 4.40 GHz boost, and it has no integrated graphics. The 5600X3D is unlocked? No, the multiplier is locked, but its TDP of 105 watts is seven times higher than the 5825U's 15 watts. The 5825U is marked active and released in January 2022; the 5600X3D is end-of-life and released in July 2023.

Where Each One Wins

The 5600X3D's wins are broad and decisive. In Cinebench R23 multi-core, it scores 18603 versus 10152, a 45.4% advantage, and in R23 single-core it leads 2626 to 1452, a 44.7% gap. Geekbench multi-core shows 9386 versus 7288 (22.4% lead), and single-core 2086 versus 1618 (22.4% lead). PassMark results reinforce this: the 5600X3D wins multithread (21888 vs 18131, 17.2% lead), physics (2453 vs 774, a massive 68.4% lead), and find prime numbers (181 vs 48, a 73.5% lead). It also edges out the 5825U in data compression (247365 vs 221938, 10.3% lead), data encryption (15170 vs 14088, 7.1% lead), extended instructions (17102 vs 14394, 15.8% lead), and random string sorting (24597 vs 23539, 4.3% lead). Even in single-thread PassMark, it leads 3187 to 3053 (4.2% lead).

The 5825U wins only two benchmarks, both in PassMark's math suite. Its floating-point score of 38482 beats the 5600X3D's 37464 by 2.7%, and its integer math score of 72577 beats 65587 by 10.7%. These results suggest the 5825U's 8-core configuration and higher thread count help in pure arithmetic throughput, despite its lower clocks. For users running heavy number-crunching or financial simulations that rely on integer operations, the 5825U offers a measurable edge. However, this advantage is narrow and does not compensate for the 5600X3D's overwhelming lead in rendering, physics, and general compute tasks.

FAQ

Q: Which CPU has better multi-core rendering performance?

A: The AMD Ryzen 5 5600X3D wins decisively. In Cinebench R23 multi-core, it scores 18603 versus the 5825U's 10152, a 45.4% lead. The 5600X3D also wins Cinebench R15 multi-core (1875 vs 1757, a 6.3% lead) and PassMark multithread (21888 vs 18131, a 17.2% lead).

Q: Is the 5825U better for single-threaded tasks?

A: No. The 5600X3D leads in every single-core test. It scores 2626 in Cinebench R23 single-core versus 1452 (44.7% lead), 2086 in Geekbench single-core versus 1618 (22.4% lead), and 3187 in PassMark single-thread versus 3053 (4.2% lead).

Q: What are the cache sizes and how do they differ?

A: The 5825U has 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3. The 5600X3D has the same L1 and L2 sizes, but its shared L3 is 96 MB, six times larger. This larger cache is likely why the 5600X3D wins cache-sensitive tests like physics and prime number finding.

Q: Do both CPUs support ECC memory?

A: Yes, both the AMD Ryzen 7 5825U and AMD Ryzen 5 5600X3D support ECC memory. Both also support DDR4 memory with dual-channel configuration and 51.2 GB/s bandwidth.

Q: Which CPU has integrated graphics?

A: Only the AMD Ryzen 7 5825U has integrated graphics, featuring Radeon Vega 8. The AMD Ryzen 5 5600X3D has no integrated graphics, meaning a discrete GPU is required for display output.

Q: Why does the 5600X3D have a higher average benchmark score despite fewer cores?

A: The 5600X3D's average benchmark score is 25365, compared to the 5825U's 25446, which is actually a 0.3% difference in favor of the 5825U. The 5600X3D's wins come from its higher clocks (3.30 GHz base, 4.40 GHz boost vs 2.00 GHz base, 4.50 GHz boost) and 96 MB L3 cache, not core count.

Head-to-Head Benchmarks

The largest margin in the entire comparison belongs to the 5600X3D in PassMark find prime numbers, where it scores 181 against the 5825U's 48, a 73.5% advantage. This is a stunning result that highlights the 5600X3D's raw integer processing power and cache efficiency. The second-biggest gap is in PassMark physics, where the 5600X3D scores 2453 versus 774, a 68.4% lead. Physics simulations often rely on large datasets held in cache, and the 5600X3D's 96 MB L3 provides a clear benefit.

In Cinebench R23, the 5600X3D's lead is nearly identical across multi-core and single-core: 45.4% and 44.7%, respectively. The multi-core score of 18603 versus 10152 shows that even with two fewer cores, the desktop chip's higher clocks and larger cache overcome the 5825U's thread advantage. The R15 multi-core test is much closer, with the 5600X3D leading 1875 to 1757 (6.3%), suggesting that shorter workloads narrow the gap. Geekbench results are consistent at a 22.4% lead for the 5600X3D in both multi-core and single-core, indicating a balanced performance advantage across the board.

The 5825U's wins are modest but real. In PassMark integer math, it scores 72577 versus 65587, a 10.7% lead. This is its strongest showing and suggests that its 8-core/16-thread configuration excels at parallel integer operations. In floating-point math, the 5825U leads 38482 to 37464, a 2.7% margin. These two wins are the only bright spots for the mobile chip, and they are isolated to pure arithmetic workloads. Every other benchmark, from data compression (247365 vs 221938, 10.3% lead for the 5600X3D) to random string sorting (24597 vs 23539, 4.3% lead), favors the desktop part. The 5600X3D also wins PassMark data encryption (15170 vs 14088, 7.1% lead) and extended instructions (17102 vs 14394, 15.8% lead). Overall, the head-to-head data is unambiguous: the 5600X3D is the performance winner, with the 5825U only remaining competitive in specific math-heavy tasks.