Core i9-9900X vs Xeon Silver 4310

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Core i9-9900X vs Xeon Silver 4310 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i9-9900X vs Xeon Silver 4310: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i9-9900X

2018

Why buy it

✅Better for gaming: +15.6% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (21,655 vs 21,903).
❌Less compelling for workstation-style loads than Xeon Silver 4310, which brings 12 cores / 24 threads and 64 PCIe lanes.
❌Launch MSRP is still $989 MSRP, while Xeon Silver 4310 mostly shows up through inconsistent older-market listings.
❌37.5% higher power demand at 165W vs 120W.

Xeon Silver 4310

2021

Why buy it

✅+1.1% higher PassMark.
✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 64 PCIe lanes vs 44.
✅Draws 120W instead of 165W, a 45W reduction.
✅45.5% more PCIe lanes (64 vs 44) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-9900X across 50 shared CPU benchmark tests.

Quick Answers

So, is Xeon Silver 4310 better than Core i9-9900X?

Not really, because they are built for different jobs. Xeon Silver 4310 makes more sense for workstation-style multi-core throughput, while Core i9-9900X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon Silver 4310 is the stronger fit. You are getting 1.1% better PassMark, backed by 12 cores and 24 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Xeon Silver 4310 is still the much better call for a fresh build. Xeon Silver 4310 comes in at an unclear MSRP at unclear MSRP versus $989 MSRP, and it still gives you 1.1% better PassMark. Core i9-9900X only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (21.9 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2066.

Which one is more future-proof for 2026 and beyond?

Xeon Silver 4310 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2018) and more multi-core headroom with 12 cores / 24 threads instead of 10/20. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-9900X vs Xeon Silver 4310 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Core i9-9900X

The Core i9-9900X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 10 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 21,655 points. Launch price was $989.

Xeon Silver 4310

The Xeon Silver 4310 is manufactured by Intel. It was released in 2015-01-01. It is based on the Ice Lake-SP (2021) architecture. It features 12 cores and 24 threads. Base frequency is 2.1 GHz, with boost up to 3.3 GHz. L3 cache: 18 MB (total). L2 cache: 1 MB (per core). Built on 10 nm process technology. Socket: LGA4189. Thermal design power (TDP): 120 Watt. Memory support: DDR4-2667. Passmark benchmark score: 21,903 points. Launch price was $800.

⚡

Processing Power

The Core i9-9900X packs 10 cores / 20 threads, while the Xeon Silver 4310 offers 12 cores / 24 threads — the Xeon Silver 4310 has 2 more cores. Boost clocks reach 4.5 GHz on the Core i9-9900X versus 3.3 GHz on the Xeon Silver 4310 — a 30.8% clock advantage for the Core i9-9900X (base: 3.5 GHz vs 2.1 GHz). The Core i9-9900X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon Silver 4310 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Core i9-9900X scores 21,655 against the Xeon Silver 4310's 21,903 — a 1.1% lead for the Xeon Silver 4310. L3 cache: 19.25 MB (total) on the Core i9-9900X vs 18 MB (total) on the Xeon Silver 4310.

Feature	Core i9-9900X	Xeon Silver 4310
Cores / Threads	10 / 20	12 / 24+20%
Boost Clock	4.5 GHz+36%	3.3 GHz
Base Clock	3.5 GHz+67%	2.1 GHz
L3 Cache	19.25 MB (total)+7%	18 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	14 nm	10 nm-29%
Architecture	Skylake (server) (2017−2018)	Ice Lake-SP (2021)
PassMark	21,655	21,903+1%
Cinebench R23 Multi	13,985	—
Geekbench 6 Single	1,459	—
Geekbench 6 Multi	9,475	—

🧠

Memory & Platform

The Core i9-9900X uses the LGA2066 socket (PCIe 3.0), while the Xeon Silver 4310 uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i9-9900X versus 2667 on the Xeon Silver 4310 — the Xeon Silver 4310 supports 0% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Silver 4310 supports up to 6144 GB of RAM compared to 128 GB — 4700% more capacity for professional workloads. Memory channels: 4 (Core i9-9900X) vs 8 (Xeon Silver 4310). PCIe lanes: 44 (Core i9-9900X) vs 64 (Xeon Silver 4310) — the Xeon Silver 4310 offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i9-9900X) and LGA4189 (Xeon Silver 4310).

Feature	Core i9-9900X	Xeon Silver 4310
Socket	LGA2066	LGA4189
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2666	2667
Max RAM Capacity	128 GB	6144 GB+4700%
RAM Channels	4	8+100%
ECC Support	No	Yes
PCIe Lanes	44	64+45%

🔧

Advanced Features

Only the Core i9-9900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Both support VT-x, VT-d virtualization.