AMD Ryzen 7 9800X3D vs Intel Xeon 6357P Comparison

The Intel Xeon 6357P and AMD Ryzen 7 9800X3D share the same 8-core, 16-thread configuration, yet the recorded data shows they land in completely different places. Both sit in the 87th percentile of all CPUs in the database, with average benchmark scores of 40630 for the Xeon and 39768 for the Ryzen, a gap of barely 2%. Look closer, though, and the head-to-head record is lopsided: the Ryzen 7 9800X3D wins 12 of 15 shared tests, while the Xeon 6357P takes 3, but those 3 include some of the largest single-test margins on the page.

FAQ

Q: Which CPU wins more benchmarks overall?

A: The AMD Ryzen 7 9800X3D wins 12 of the 15 head-to-head tests, against 3 wins for the Intel Xeon 6357P. Despite that split, their overall average scores are nearly identical, 39768 versus 40630, because the Xeon's wins come with huge margins in Cinebench single-core workloads.

Q: Which CPU is faster in single-threaded work?

A: It depends on the test. The Xeon 6357P dominates Cinebench single-core: 3691 versus 2080 in R23, a 77.5% lead. But in PassMark single-thread, the Ryzen 9800X3D is ahead, 4430 versus 4233, a 4.4% edge.

Q: Which CPU is faster in multi-threaded work?

A: The Ryzen 9800X3D leads most multi-threaded tests. It wins PassMark multithread by 23.1% (40009 versus 30759) and Cinebench R15 multicore by 27.7% (3647 versus 2635). The Xeon's counterpunch is Cinebench R23 multicore, which it wins 26145 to 23230, a 12.5% margin.

Q: Do these CPUs support ECC memory?

A: Yes, both support ECC. The Xeon 6357P additionally supports DDR4 as well as DDR5, while the Ryzen 9800X3D is DDR5-only.

Q: Which CPU has more cache?

A: The Ryzen 9800X3D, by a wide margin. It carries 96 MB of shared L3 cache against the Xeon's 24 MB. The Xeon fights back with 2 MB of L2 per core versus 1 MB per core on the Ryzen.

Q: Can either CPU be overclocked?

A: Only the Ryzen 7 9800X3D has an unlocked multiplier. The Xeon 6357P's multiplier is locked.

Architecture Differences

These chips come from opposite ends of the market. The Xeon 6357P is a server and workstation part built on Intel's Raptor Lake architecture (codename Raptor Lake-R), manufactured on Intel's 10 nm process with a die size of 257 mm². The Ryzen 7 9800X3D is a desktop processor from AMD's 9000 series, using Zen 5 architecture (codename Granite Ridge), fabbed by TSMC on a 4 nm node with a much smaller 70.6 mm² die and 8,315 million transistors.

The cache hierarchies diverge sharply. Both share 80 KB of L1 per core, but the Xeon doubles the per-core L2 at 2 MB against AMD's 1 MB, while the Ryzen overwhelms it in L3: 96 MB shared versus 24 MB. That giant L3 pool is the defining feature of the X3D line and explains why the Ryzen pulls away in tests with large working sets.

Clock behavior differs too. The Xeon has a lower base clock of 3.00 GHz but boosts higher, to 5.40 GHz. The Ryzen starts much higher at 4.70 GHz and tops out at 5.20 GHz. Platform features also split: the Ryzen offers 24 PCIe 5.0 lanes and integrated Radeon Graphics, while the Xeon provides 16 PCIe 5.0 lanes, no integrated graphics, and broader memory support covering both DDR4 and DDR5. Both are dual-channel and both remain in active production. The Xeon launched on 2025-02-23 with a launch MSRP of $556; the Ryzen launched 2024-11-06 at $479. Thermally, the Ryzen carries a higher TDP at 120 W versus 80 W for the Xeon.

Where Each One Wins

The data gives the Ryzen 7 9800X3D the broad victory. It sweeps essentially every PassMark test: multithread, physics, integer math, floating point math, prime finding, string sorting, compression, encryption, extended instructions, and single-thread. It also takes Cinebench R15 multicore. These are throughput-heavy, memory-sensitive, and SIMD-leaning workloads, exactly where Zen 5's wider execution and the 96 MB L3 cache pay off. The physics result is the star: 4083 versus 2305, a 43.5% blowout. Prime number finding is even more dramatic at 64.8% in AMD's favor, and extended instructions land 36.9% toward the Ryzen.

The Xeon 6357P owns one specific territory: legacy Cinebench single-core. Its R23 single-core score of 3691 is 77.5% higher than the Ryzen's 2080, and it also leads R15 single-core by 13.4% and R23 multicore by 12.5%. That R23 multicore win is notable because it contradicts the R15 multicore result, where the Ryzen leads by 27.7%. Taken together, the Xeon profile suits bursty, lightly threaded, per-clock-sensitive workloads on a server platform with ECC and DDR4 compatibility.

Neither chip separates itself from its own neighborhood. The Xeon's nearest rivals include the Intel Core 5 223PE (within 0.1%), Intel Core 7 253PE (0.2%), Intel Core Ultra X7 368H (0.3%), and AMD Ryzen AI 5 PRO 435G (-0.2%). The Ryzen's closest comparables are the AMD Ryzen 7 7700 (-0.8%), Ryzen AI 9 365 (-0.7%), Ryzen AI 7 450 (0.7%), and Ryzen 7 PRO 8840HS (0.4%). In other words, both are 87th-percentile performers surrounded by peers within 1% of their averages.

Specification Differences

• Socket: Intel Socket 1700 (Xeon) versus AMD Socket AM5 (Ryzen)
• Base clock: 3.00 GHz versus 4.70 GHz
• Boost clock: 5.40 GHz versus 5.20 GHz
• TDP: 80 W versus 120 W
• Process node: 10 nm (Intel) versus 4 nm (TSMC)
• Die size: 257 mm² versus 70.6 mm²
• L2 cache: 2 MB per core versus 1 MB per core
• L3 cache: 24 MB shared versus 96 MB shared
• Memory support: DDR4 and DDR5 versus DDR5 only
• Memory bandwidth: not recorded for the Xeon; 89.6 GB/s for the Ryzen
• PCIe: Gen 5 with 16 lanes versus Gen 5 with 24 lanes
• Integrated graphics: none versus Radeon Graphics
• Multiplier: locked versus unlocked
• Market segment: Server/Workstation versus Desktop

Cores (8), threads (16), L1 cache (80 KB per core), dual-channel memory, ECC support, and active production status are identical.

Head-to-Head Benchmarks

Start with the Ryzen's biggest wins. PassMark find prime numbers is the widest gap on the board: 423 versus 149, a 64.8% lead for AMD. Extended instructions follows at 38808 versus 24490, 36.9% in AMD's favor, a clear signal of Zen 5's SIMD throughput. Physics is nearly as lopsided, 4083 versus 2305, 43.5% to the Ryzen. Among the Cinebench results, R15 multicore goes to AMD 3647 to 2635, a 27.7% margin, and the rest of the PassMark suite stays consistently blue: string sorting 48526 to 35495 (-26.9%), compression 468017 to 353521 (-24.5%), multithread 40009 to 30759 (-23.1%), encryption 22158 to 18324 (-17.3%), integer math 116709 to 97375 (-16.6%), floating point math 79456 to 74460 (-6.3%), and single-thread 4430 to 4233 (-4.4%).

The Xeon's three wins are concentrated but enormous. Cinebench R23 single-core is the headline: 3691 versus 2080, a 77.5% advantage that is the largest margin either way in the entire dataset. Cinebench R15 single-core also goes Intel's way, 372 to 328, 13.4%. Most intriguing is Cinebench R23 multicore, where the Xeon flips the script on AMD's R15 multicore win and takes it 26145 to 23230, 12.5% ahead. The database shows the same two chips trading multi-core leadership depending on the rendering generation used.

The verdict from the measurements: the Ryzen 7 9800X3D is the stronger all-around performer, winning 12 of 15 tests with large, consistent margins across compute, memory, and physics workloads. The Xeon 6357P is a specialist play, delivering exceptional legacy single-core speed, ECC with DDR4 flexibility, and a lower 80 W TDP for server and workstation duty where its platform features matter more than raw benchmark sweeps.