AMD Ryzen 9 9900X3D vs Intel Xeon 634 Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive picture: the AMD Ryzen 9 9900X3D wins all 17 recorded head-to-head comparisons against the Intel Xeon 634. The largest margin comes in PassMark's find prime numbers test, where the AMD part scores 544 against 196, a 177.6% advantage. This is not an isolated result; it reflects a consistent pattern across both synthetic and application-style workloads.

In the Cinebench suite, the Ryzen 9 9900X3D holds a nearly uniform lead. The R15 multicore test shows 4811 versus 3220, a 49.4% delta, while the single-core result is 679 versus 454, a 49.6% delta. The R20 and R23 tests repeat this pattern with identical 49.4% deltas. The R23 multicore score of 47737 dwarfs the Xeon's 31950, and the single-core score of 6739 versus 4510 represents a 49.4% gap. These consistent percentages across the Cinebench lineage indicate a fundamental per-thread performance difference, not a scaling artifact.

The PassMark suite reinforces the same conclusion with varied workloads. Integer math shows 179727 versus 117664, a 52.7% delta. Random string sorting delivers 71864 versus 47016, a 52.9% delta. Data compression favors the AMD chip by 43.3% (685074 against 477924), and data encryption by 41.9% (33282 against 23451). Extended instruction throughput is 44.6% higher at 55426 versus 38320.

The most dramatic divergence appears in the physics test, where the Ryzen 9 9900X3D scores 5340 against the Xeon's 2250, a 137.3% delta. Floating point math is closer but still decisive: 119622 versus 93564, a 27.9% advantage. The multithread PassMark score lands at 56154 versus 37589, again a 49.4% delta. Single-thread PassMark results show 4646 versus 3567, a 30.2% gap, which is notably smaller than the Cinebench single-core delta but still substantial.

There is no benchmark in the recorded set where the Intel Xeon 634 outperforms the AMD Ryzen 9 9900X3D. The closest margins are floating point math at 27.9% and single-thread PassMark at 30.2%, while the largest is the 177.6% find prime numbers result. The data indicates that the AMD processor is faster in every measured category, with the advantage ranging from roughly a quarter to nearly double the Xeon's performance.

The Verdict

The recorded data supports a clear choice for users prioritizing raw performance: the AMD Ryzen 9 9900X3D outperforms the Intel Xeon 634 in every benchmark recorded in the database, with deltas ranging from 27.9% to 177.6%. The average benchmark score for the AMD part is 54762, against 52974 for the Intel part, a difference of about 3.4%. Both processors sit at the 91st percentile among all CPUs, so the gap is not one of tier, but of execution within the same percentile band.

The Intel Xeon 634 does have its own context. Its nearest rivals include the AMD EPYC 7313P at 0.4% faster and the AMD Ryzen 9 7900X at 0.6% faster, meaning the Xeon sits in a competitive cluster slightly below the 9900X3D. The Xeon's average score of 52974 places it between the AMD Ryzen AI Embedded P164 (52901, 0.1% slower) and the AMD Ryzen 5 9500F (52873, 0.2% slower). This suggests the Xeon is a solid mid-pack performer, but the 9900X3D is measurably ahead.

Users who need single-thread responsiveness, as measured by Cinebench R23 single-core at 6739 versus 4510, should favor the AMD part. Users who need multi-thread throughput, as shown by the 49.4% delta in Cinebench R23 multicore, should also favor the AMD part. The only scenario where the Xeon might be considered is one where its platform attributes, such as the quad-channel memory bus and 80 PCIe Gen 5 lanes, matter more than benchmark scores. The database does not record any workload where the Xeon wins, so the performance verdict is unambiguous.

FAQ

Q: How much faster is the AMD Ryzen 9 9900X3D in Cinebench R23 multicore?

A: The AMD part scores 47737 versus the Intel Xeon 634's 31950, a 49.4% advantage.

Q: Which processor has the larger single-thread lead?

A: In Cinebench R15 single-core, the AMD Ryzen 9 9900X3D scores 679 against 454, a 49.6% delta, which is the largest single-thread margin recorded.

Q: Are there any benchmarks where the Intel Xeon 634 wins?

A: No. The database records 17 head-to-head comparisons, and the AMD Ryzen 9 9900X3D wins all 17.

Q: What is the smallest performance gap between the two?

A: The smallest delta is in PassMark floating point math, where the AMD part leads by 27.9% (119622 versus 93564).

Q: How do the two compare in average benchmark score?

A: The AMD Ryzen 9 9900X3D has an average score of 54762, while the Intel Xeon 634 has 52974, a difference of about 3.4%.

Q: What is the largest performance gap in the recorded data?

A: The largest is in PassMark find prime numbers, where the AMD part scores 544 against 196, a 177.6% advantage.

Specification Differences

The two processors share a 12-core, 24-thread configuration, but nearly every other specification differs. The AMD Ryzen 9 9900X3D has a base clock of 4.40 GHz and a boost clock of 5.50 GHz, while the Intel Xeon 634 operates at 2.70 GHz base and 4.60 GHz boost. The AMD part carries a TDP of 120 watts, the Intel part 150 watts. The AMD processor uses AMD Socket AM5, the Intel part uses Intel Socket 4710.

Memory specifications diverge sharply. Both support DDR5, but the AMD part uses a dual-channel bus with 89.6 GB/s bandwidth, while the Intel part uses a quad-channel bus with 204.8 GB/s bandwidth. Both support ECC memory. PCIe connectivity differs as well: the AMD part provides Gen 5 with 24 lanes (CPU only), the Intel part provides Gen 5 with 80 lanes (CPU only). The AMD part includes integrated Radeon Graphics, while the Intel part has no integrated graphics. Both have unlocked multipliers. The launch MSRP for the AMD part is $599, and the launch MSRP for the Intel part is $499.

Cache configurations differ in structure. The AMD Ryzen 9 9900X3D has 80 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3. The Intel Xeon 634 has 112 KB of L1 per core, 2 MB of L2 per core, and 48 MB of shared L3.

Architecture Differences

The AMD Ryzen 9 9900X3D is built on the Zen 5 architecture with the Granite Ridge codename, part of the Ryzen 9 generation. It uses a 4 nm process node fabricated by TSMC, with 16,630 million transistors and a die size of 2x 70.6 mm². The Intel Xeon 634 uses the Granite Rapids architecture with the Granite Rapids codename, part of the Xeon 600 generation (Granite Rapids-WS). It uses a 5 nm process node fabricated by Intel, with a die size of 598 mm². The Intel part's transistor count is not recorded in the database.

The AMD part's L3 cache is a 128 MB pool, which is significantly larger than the Intel part's 48 MB shared L3. The Intel part counters with larger per-core L1 and L2 caches: 112 KB versus 80 KB for L1, and 2 MB versus 1 MB for L2. The AMD part's market segment is Desktop, while the Intel part is classified as Server/Workstation. The AMD part was released on 2025-01-05, and the Intel part on 2026-02-01.

The Intel Xeon 634's quad-channel memory bus and 80 PCIe Gen 5 lanes give it a platform-level advantage for high-bandwidth server workloads, even though its benchmark scores trail the AMD part. The AMD part's larger L3 cache and higher clock speeds appear to drive its performance lead in the recorded tests. Both processors are marked as Active in production status, and both have unlocked multipliers, though the Intel part's multiplier unlock is notable given its server/workstation classification.