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 i9-12900K vs Xeon 6515P 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 i9-12900K vs Xeon 6515P: Pros, Cons & Final Verdict

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

Core i9-12900K

2021

Why buy it

✅Better for gaming: +19.0% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $151 less on MSRP ($589 MSRP vs $740 MSRP).
✅Delivers 27.1% more PassMark for each dollar spent, at 69.9 vs 55.0 PassMark/$ ($589 MSRP vs $740 MSRP).
✅Draws 125W instead of 150W, a 25W reduction.
✅Integrated graphics onboard with Intel UHD Graphics 770, while Xeon 6515P needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (30 MB vs 72 MB).
❌Less compelling for workstation-style loads than Xeon 6515P, which brings 16 cores / 32 threads and 88 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon 6515P

2025

Why buy it

✅+140% larger total L3 cache (72 MB vs 30 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 88 PCIe lanes vs 20.
✅340% more PCIe lanes (88 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-12900K across 50 shared CPU benchmark tests.
❌Lower PassMark (40,720 vs 41,180).
❌Lower PassMark per dollar, at 55.0 vs 69.9 PassMark/$ ($740 MSRP vs $589 MSRP).
❌20% higher power demand at 150W vs 125W.
❌No integrated graphics, while Core i9-12900K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i9-12900K better than Xeon 6515P?

Not really, because they are built for different jobs. Xeon 6515P makes more sense for workstation-style multi-core throughput, while Core i9-12900K 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 i9-12900K is the better pick. According to our tests, it delivers 19.0% 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 i9-12900K is the stronger fit. You are getting 1.1% better PassMark, backed by 16 cores and 24 threads.

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

Core i9-12900K is the better buy right now. Core i9-12900K comes in $151 cheaper on MSRP at $589 MSRP versus $740 MSRP, and it still gives you a 19.0% average FPS lead across 50 shared CPU game tests in our data. It is also 27.1% better value on MSRP (69.9 vs 55.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Xeon 6515P makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2021), 140% larger total L3 cache (72 MB vs 30 MB), and AVX-512 support for heavier modern compute workloads. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-12900K vs Xeon 6515P Technical Specifications

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

Core i9-12900K

The Core i9-12900K is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 16 cores and 24 threads. Base frequency is 3.2 GHz, with boost up to 5.2 GHz. L3 cache: 30 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 41,180 points. Launch price was $589.

Xeon 6515P

The Xeon 6515P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.3 GHz, with boost up to 3.8 GHz. L3 cache: 72 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 150 Watt. Memory support: DDR5(6400MT/s). Passmark benchmark score: 40,720 points. Launch price was $740.

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Processing Power

The Core i9-12900K packs 16 cores / 24 threads, matching the Xeon 6515P's 16 cores. Boost clocks reach 5.2 GHz on the Core i9-12900K versus 3.8 GHz on the Xeon 6515P — a 31.1% clock advantage for the Core i9-12900K (base: 3.2 GHz vs 2.3 GHz). The Core i9-12900K uses the Alder Lake, Golden Cove, Gracemont (2021) architecture (10 nm), while the Xeon 6515P uses Granite Rapids (2024−2025) (Intel 3 nm). In PassMark, the Core i9-12900K scores 41,180 against the Xeon 6515P's 40,720 — a 1.1% lead for the Core i9-12900K. L3 cache: 30 MB (total) on the Core i9-12900K vs 72 MB (total) on the Xeon 6515P.

Feature	Core i9-12900K	Xeon 6515P
Cores / Threads	16 / 24	16 / 32
Boost Clock	5.2 GHz+37%	3.8 GHz
Base Clock	3.2 GHz+39%	2.3 GHz
L3 Cache	30 MB (total)	72 MB (total)+140%
L2 Cache	1.25 MB (per core)	2 MB (per core)+60%
Process	10 nm	Intel 3 nm-70%
Architecture	Alder Lake, Golden Cove, Gracemont (2021)	Granite Rapids (2024−2025)
PassMark	41,180+1%	40,720

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Memory & Platform

The Core i9-12900K uses the LGA1700 socket (PCIe 5.0), while the Xeon 6515P uses LGA4710 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Core i9-12900K versus 6400 on the Xeon 6515P — the Xeon 6515P supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon 6515P supports up to 4096 GB of RAM compared to 128 GB — 3100% more capacity for professional workloads. Memory channels: 2 (Core i9-12900K) vs 8 (Xeon 6515P). PCIe lanes: 20 (Core i9-12900K) vs 88 (Xeon 6515P) — the Xeon 6515P offers 68 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 600 series,Intel 700 series (Core i9-12900K) and LGA4710 (Xeon 6515P).

Feature	Core i9-12900K	Xeon 6515P
Socket	LGA1700	LGA4710
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-4800	6400+33%
Max RAM Capacity	128 GB	4096 GB+3100%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	20	88+340%

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Advanced Features

Virtualization: not specified (Core i9-12900K) / VT-x, VT-d (Xeon 6515P). The Core i9-12900K includes integrated graphics (Intel UHD Graphics 770), while the Xeon 6515P requires a dedicated GPU. Direct competitor: Xeon 6515P rivals EPYC 9534.

Feature	Core i9-12900K	Xeon 6515P
Integrated GPU	Yes	No
IGPU Model	Intel UHD Graphics 770	None
Unlocked	—	No
AVX-512	—	Yes
Virtualization	—	VT-x, VT-d

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Value Analysis

At launch, the Core i9-12900K was priced at $589, while the Xeon 6515P came in at $740. On launch pricing ($589 vs $740), Core i9-12900K was $151 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-12900K delivers 69.9 pts/$ vs 55.0 pts/$ for the Xeon 6515P — making the Core i9-12900K the 23.8% better value option.

Feature	Core i9-12900K	Xeon 6515P
MSRP	$589-20%	$740
Performance per Dollar	69.9+27%	55.0
Release Date	2021	2025

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