Core i7-9700K vs Xeon X5355

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 i7-9700K vs Xeon X5355 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 i7-9700K vs Xeon X5355: Pros, Cons & Final Verdict

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

Core i7-9700K

2018

Why buy it

✅Better for gaming: +374.7% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Costs $4,106 less on MSRP ($385 MSRP vs $4,491 MSRP).
✅Delivers 8136.4% more PassMark for each dollar spent, at 37.4 vs 0.5 PassMark/$ ($385 MSRP vs $4,491 MSRP).
✅Draws 95W instead of 120W, a 25W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Xeon X5355

2006

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-9700K across 50 shared CPU benchmark tests.
❌Lower PassMark (2,039 vs 14,397).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌Lower PassMark per dollar, at 0.5 vs 37.4 PassMark/$ ($4,491 MSRP vs $385 MSRP).
❌26.3% higher power demand at 120W vs 95W.

Quick Answers

So, is Core i7-9700K better than Xeon X5355?

Not really, because they are built for different jobs. Xeon X5355 makes more sense for workstation-style multi-core throughput, while Core i7-9700K is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i7-9700K is the better pick. According to our tests, it delivers 374.7% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i7-9700K is the stronger fit. You are getting 606.1% better PassMark, backed by 8 cores and 8 threads. It also has the larger cache pool with 50% larger total L3 cache (12 MB vs 8 MB).

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

Core i7-9700K is the better buy right now. Core i7-9700K comes in $4,106 cheaper on MSRP at $385 MSRP versus $4,491 MSRP, and it still gives you a 374.7% average FPS lead across 50 shared CPU game tests in our data. It is also 8136.4% better value on MSRP (37.4 vs 0.5 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i7-9700K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2006), 50% larger total L3 cache (12 MB vs 8 MB), and more multi-core headroom with 8 cores / 8 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-9700K vs Xeon X5355 Technical Specifications

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

Core i7-9700K

The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.

Xeon X5355

The Xeon X5355 is manufactured by Intel. It was released in 14 November 2006 (19 years ago). It is based on the Clovertown (2006−2007) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 8 MB L2 Cache. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 120 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,039 points. Launch price was $1,172.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Xeon X5355 offers 4 cores / 4 threads — the Core i7-9700K has 4 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 0.67 GHz on the Xeon X5355 — a 151.9% clock advantage for the Core i7-9700K (base: 3.6 GHz vs 2.66 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Xeon X5355 uses Clovertown (2006−2007) (65 nm). In PassMark, the Core i7-9700K scores 14,397 against the Xeon X5355's 2,039 — a 150.4% lead for the Core i7-9700K. L3 cache: 12 MB (total) on the Core i7-9700K vs 8 MB L2 Cache on the Xeon X5355.

Feature	Core i7-9700K	Xeon X5355
Cores / Threads	8 / 8+100%	4 / 4
Boost Clock	4.9 GHz+631%	0.67 GHz
Base Clock	3.6 GHz+35%	2.66 GHz
L3 Cache	12 MB (total)+50%	8 MB L2 Cache
L2 Cache	256K (per core)+6300%	4 MB (total)
Process	14 nm-78%	65 nm
Architecture	Coffee Lake-R (2018−2019)	Clovertown (2006−2007)
PassMark	14,397+606%	2,039

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Xeon X5355 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i7-9700K	Xeon X5355
Socket	LGA1151	LGA771
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i7-9700K) / not specified (Xeon X5355). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Xeon X5355 requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.

Feature	Core i7-9700K	Xeon X5355
Integrated GPU	Yes	—
IGPU Model	UHD Graphics 630	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	Desktop	—

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Value Analysis

At launch, the Core i7-9700K was priced at $385, while the Xeon X5355 came in at $4491. On launch pricing ($385 vs $4491), Core i7-9700K was $4106 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-9700K delivers 37.4 pts/$ vs 0.5 pts/$ for the Xeon X5355 — making the Core i7-9700K the 195.2% better value option.

Feature	Core i7-9700K	Xeon X5355
MSRP	$385-91%	$4491
Performance per Dollar	37.4+7380%	0.5
Release Date	2018	2006

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