Core i5-12400F vs EPYC 9255

CPU

GPU

Core i5-12400F

6 Cores12 Thrd65 WWMax: 4.4 GHz2022

Core family

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EPYC 9255

24 Cores48 Thrd200 WWMax: 4.8 GHz2024

EPYC family

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Core i5-12400F vs EPYC 9255 Performance Spectrum

Core i5-12400F

6 / 12

19,532

0.0%

75,809

+288.1%

Ryzen 7 8840HX

Ryzen 9 7900X3D

Ryzen 9 7945HX3D

Ryzen Threadripper PRO 5965WX

Ryzen Threadripper 9960X

Ryzen Threadripper 7970X

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

About PassMark

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 i5-12400F vs EPYC 9255 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 i5-12400F vs EPYC 9255: Pros, Cons & Final Verdict

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

Core i5-12400F

2022

Why buy it

✅Costs $2,321 less on MSRP ($174 MSRP vs $2,495 MSRP).
✅Delivers 269.4% more PassMark for each dollar spent, at 112.3 vs 30.4 PassMark/$ ($174 MSRP vs $2,495 MSRP).
✅Draws 65W instead of 200W, a 135W reduction.
✅Includes a boxed cooler (Yes), unlike EPYC 9255.

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9255 across 50 shared CPU benchmark tests.
❌Lower PassMark (19,532 vs 75,809).
❌Less compelling for workstation-style loads than EPYC 9255, which brings 24 cores / 48 threads and 128 PCIe lanes.

EPYC 9255

2024

Why buy it

✅Better for gaming: +23.7% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 128 PCIe lanes vs 20.
✅540% more PCIe lanes (128 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 30.4 vs 112.3 PassMark/$ ($2,495 MSRP vs $174 MSRP).
❌207.7% higher power demand at 200W vs 65W.
❌No boxed cooler included, unlike Core i5-12400F.

Quick Answers

So, is EPYC 9255 better than Core i5-12400F?

Not really, because they are built for different jobs. EPYC 9255 makes more sense for workstation-style multi-core throughput, while Core i5-12400F is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, EPYC 9255 is the better pick. According to our tests, it delivers 23.7% more average FPS across 50 shared CPU game tests. It also has a clear cache advantage at 128 MB versus 18 MB.

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

For streaming, content creation, and heavier multitasking, EPYC 9255 is the stronger fit. You are getting 288.1% better PassMark, backed by 24 cores and 48 threads. It also has the larger cache pool with 611.1% larger total L3 cache (128 MB vs 18 MB).

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

EPYC 9255 is still the faster CPU overall, but Core i5-12400F is easier to justify if budget matters more than peak performance. EPYC 9255 comes in 1333.9% more expensive on MSRP at $2,495 MSRP versus $174 MSRP, and it still gives you a 23.7% average FPS lead across 50 shared CPU game tests in our data. Core i5-12400F is also 269.4% better value on MSRP (112.3 vs 30.4 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

EPYC 9255 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2022), 3D V-Cache and a much larger 128 MB L3 cache instead of 18 MB, more multi-core headroom with 24 cores / 48 threads instead of 6/12, and AVX-512 support for heavier modern compute workloads. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs EPYC 9255 Technical Specifications

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

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

EPYC 9255

The EPYC 9255 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 24 cores and 48 threads. Base frequency is 3.25 GHz, with boost up to 4.8 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 200 Watt. Memory support: DDR5. Passmark benchmark score: 75,809 points. Launch price was $2,495.

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Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the EPYC 9255 offers 24 cores / 48 threads — the EPYC 9255 has 18 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4.8 GHz on the EPYC 9255 — a 8.7% clock advantage for the EPYC 9255 (base: 2.5 GHz vs 3.25 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the EPYC 9255 uses Turin (2024) (4 nm). In PassMark, the Core i5-12400F scores 19,532 against the EPYC 9255's 75,809 — a 118.1% lead for the EPYC 9255. L3 cache: 18 MB (total) on the Core i5-12400F vs 128 MB (total) on the EPYC 9255.

Feature	Core i5-12400F	EPYC 9255
Cores / Threads	6 / 12	24 / 48+300%
Boost Clock	4.4 GHz	4.8 GHz+9%
Base Clock	2.5 GHz	3.25 GHz+30%
L3 Cache	18 MB (total)	128 MB (total)+611%
L2 Cache	1.25 MB (per core)+25%	1 MB (per core)
Process	Intel 7 nm	4 nm-43%
Architecture	Alder Lake-S (2022)	Turin (2024)
PassMark	19,532	75,809+288%
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	—
Geekbench 6 Multi	657	—

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the EPYC 9255 uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-4800, DDR4-3200 memory speed. The EPYC 9255 supports up to 6144 GB of RAM compared to 128 GB — 4700% more capacity for professional workloads. Memory channels: 2 (Core i5-12400F) vs 12 (EPYC 9255). PCIe lanes: 20 (Core i5-12400F) vs 128 (EPYC 9255) — the EPYC 9255 offers 108 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and SP5 (EPYC 9255).

Feature	Core i5-12400F	EPYC 9255
Socket	LGA1700	SP5
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR5-4800, DDR4-3200	4800
Max RAM Capacity	128 GB	6144 GB+4700%
RAM Channels	2	12+500%
ECC Support	No	Yes
PCIe Lanes	20	128+540%

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs VT-x, VT-d, SEV-SNP (EPYC 9255). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600; EPYC 9255 rivals Xeon Platinum 8480+.

Feature	Core i5-12400F	EPYC 9255
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	No
AVX-512	—	Yes
Virtualization	VT-x, VT-d, EPT	VT-x, VT-d, SEV-SNP
Target Use	Gaming Performance/Value	—

💰

Value Analysis

At launch, the Core i5-12400F was priced at $174, while the EPYC 9255 came in at $2495. On launch pricing ($174 vs $2495), Core i5-12400F was $2321 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 30.4 pts/$ for the EPYC 9255 — making the Core i5-12400F the 114.8% better value option.

Feature	Core i5-12400F	EPYC 9255
MSRP	$174-93%	$2495
Performance per Dollar	112.3+269%	30.4
Release Date	2022	2024

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