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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i5-10400F

2020

Why buy it

✅Draws 65W instead of 125W, a 60W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Xeon Silver 4509Y.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Silver 4509Y across 30 shared CPU benchmark tests.
❌Lower PassMark (13,029 vs 18,749).
❌Smaller total L3 cache (12 MB vs 23 MB).
❌Less compelling for workstation-style loads than Xeon Silver 4509Y, which brings 8 cores / 16 threads.
❌Launch MSRP is still $160 MSRP, while Xeon Silver 4509Y mostly shows up through inconsistent older-market listings.

Xeon Silver 4509Y

2023

Why buy it

✅Better for gaming: +16.5% higher average FPS across 30 shared CPU benchmark tests.
✅+87.5% larger total L3 cache (23 MB vs 12 MB).
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads.
✅Newer platform on LGA4677 with DDR5 support instead of LGA1200 and DDR4.

Trade-offs

❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Xeon Silver 4509Y

2023

Why buy it

✅Draws 65W instead of 125W, a 60W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Xeon Silver 4509Y.

Why buy it

✅Better for gaming: +16.5% higher average FPS across 30 shared CPU benchmark tests.
✅+87.5% larger total L3 cache (23 MB vs 12 MB).
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads.
✅Newer platform on LGA4677 with DDR5 support instead of LGA1200 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Silver 4509Y across 30 shared CPU benchmark tests.
❌Lower PassMark (13,029 vs 18,749).
❌Smaller total L3 cache (12 MB vs 23 MB).
❌Less compelling for workstation-style loads than Xeon Silver 4509Y, which brings 8 cores / 16 threads.
❌Launch MSRP is still $160 MSRP, while Xeon Silver 4509Y mostly shows up through inconsistent older-market listings.

Trade-offs

❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Xeon Silver 4509Y better than Core i5-10400F?

Not in a simple one-size-fits-all way. Xeon Silver 4509Y makes more sense for workstation-style multi-core throughput, while Core i5-10400F is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Xeon Silver 4509Y is the better pick here. According to our tests, it delivers 16.5% more average FPS across 30 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon Silver 4509Y is the better fit. You are getting 43.9% better PassMark, backed by 8 cores and 16 threads. It also carries the larger cache pool with 87.5% larger total L3 cache (23 MB vs 12 MB).

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

Xeon Silver 4509Y is still the faster CPU overall, but Core i5-10400F makes more sense if price matters more than absolute performance. Xeon Silver 4509Y is at an unclear MSRP at unclear MSRP versus $160 MSRP, and it gives you a 16.5% average FPS lead across 30 shared CPU game tests in our data. Core i5-10400F is also 100.0% better value on MSRP (81.4 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Xeon Silver 4509Y is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020), a healthier platform with LGA4677 and DDR5 instead of LGA1200, 87.5% larger total L3 cache (23 MB vs 12 MB), and more multi-core headroom with 8 cores / 16 threads instead of 6/12. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i5-10400F Benchmark Check

Xeon Silver 4509Y Benchmark Check

Path of Exile 2

Preset	Core i5-10400F	Xeon Silver 4509Y
1080p
low	192 FPS	176 FPS
medium	152 FPS	142 FPS
high	123 FPS	116 FPS
ultra	100 FPS	92 FPS
1440p
low	153 FPS	143 FPS
medium	119 FPS	113 FPS
high	97 FPS	90 FPS
ultra	79 FPS	71 FPS
4K
low	82 FPS	66 FPS
medium	70 FPS	55 FPS
high	55 FPS	44 FPS
ultra	43 FPS	35 FPS

Open Core i5-10400F Open Xeon Silver 4509Y

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-10400F	Xeon Silver 4509Y
1080p
low	326 FPS	469 FPS
medium	318 FPS	428 FPS
high	290 FPS	355 FPS
ultra	253 FPS	321 FPS
1440p
low	326 FPS	431 FPS
medium	292 FPS	382 FPS
high	267 FPS	324 FPS
ultra	234 FPS	282 FPS
4K
low	309 FPS	280 FPS
medium	258 FPS	250 FPS
high	235 FPS	228 FPS
ultra	199 FPS	204 FPS

Open Core i5-10400F Open Xeon Silver 4509Y

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-10400F	Xeon Silver 4509Y
1080p
low	326 FPS	469 FPS
medium	326 FPS	469 FPS
high	326 FPS	469 FPS
ultra	326 FPS	469 FPS
1440p
low	326 FPS	469 FPS
medium	326 FPS	469 FPS
high	326 FPS	469 FPS
ultra	326 FPS	469 FPS
4K
low	326 FPS	469 FPS
medium	326 FPS	414 FPS
high	289 FPS	365 FPS
ultra	229 FPS	298 FPS

Open Core i5-10400F Open Xeon Silver 4509Y

League of Legends

League of Legends

Valorant

Preset	Core i5-10400F	Xeon Silver 4509Y
1080p
low	326 FPS	469 FPS
medium	326 FPS	469 FPS
high	326 FPS	469 FPS
ultra	326 FPS	469 FPS
1440p
low	326 FPS	469 FPS
medium	326 FPS	469 FPS
high	326 FPS	469 FPS
ultra	326 FPS	453 FPS
4K
low	326 FPS	469 FPS
medium	326 FPS	428 FPS
high	326 FPS	383 FPS
ultra	326 FPS	332 FPS

Open Core i5-10400F Open Xeon Silver 4509Y

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-10400F and Xeon Silver 4509Y

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

Xeon Silver 4509Y

The Xeon Silver 4509Y is manufactured by Intel. It was released in 14 December 2023 (1 year ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 2.6 GHz, with boost up to 4.1 GHz. L3 cache: 22.5 MB (total). L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 125 Watt. Memory support: DDR5 @ 4400 MT/s (1 DPC &2DPC). Passmark benchmark score: 18,749 points. Launch price was $563.

⚡

Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Xeon Silver 4509Y offers 8 cores / 16 threads — the Xeon Silver 4509Y has 2 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 4.1 GHz on the Xeon Silver 4509Y — a 4.8% clock advantage for the Core i5-10400F (base: 2.9 GHz vs 2.6 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Xeon Silver 4509Y uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Core i5-10400F scores 13,029 against the Xeon Silver 4509Y's 18,749 — a 36% lead for the Xeon Silver 4509Y. L3 cache: 12 MB (total) on the Core i5-10400F vs 22.5 MB (total) on the Xeon Silver 4509Y.

Feature	Core i5-10400F	Xeon Silver 4509Y
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	4.3 GHz+5%	4.1 GHz
Base Clock	2.9 GHz+12%	2.6 GHz
L3 Cache	12 MB (total)	22.5 MB (total)+88%
L2 Cache	256K (per core)	2 MB (per core)+700%
Process	14 nm	Intel 7 nm-50%
Architecture	Comet Lake (2020−2025)	Sapphire Rapids (2023−2024)
PassMark	13,029	18,749+44%
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454	—
Geekbench 6 Multi	5,783	—

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Xeon Silver 4509Y uses LGA4677 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-10400F	Xeon Silver 4509Y
Socket	LGA1200	LGA4677
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i5-10400F) / not specified (Xeon Silver 4509Y). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.