Core i5-10400F vs Opteron 6278

Core i5-10400F vs Opteron 6278 Performance Spectrum

Core i5-10400F

6 / 12

13,029

0.0%

13,733

+5.4%

Ryzen Threadripper PRO 7945WX

Ryzen Threadripper PRO 9955WX

Ryzen Threadripper 9960X

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 i5-10400F vs Opteron 6278 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 i5-10400F vs Opteron 6278: Pros, Cons & Final Verdict

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

Core i5-10400F

2020

Why buy it

✅Better for gaming: +11.1% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Draws 65W instead of 115W, a 50W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Opteron 6278.

Trade-offs

❌Lower PassMark (13,029 vs 13,733).
❌Less compelling for workstation-style loads than Opteron 6278, which brings 16 cores / 16 threads.
❌Launch MSRP is still $160 MSRP, while Opteron 6278 mostly shows up through inconsistent older-market listings.

Opteron 6278

2012

Why buy it

✅+5.4% higher PassMark.
✅Better for workstations and heavier parallel workloads: 16 cores / 16 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8 MB vs 12 MB).
❌76.9% higher power demand at 115W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i5-10400F better than Opteron 6278?

Not really, because they are built for different jobs. Opteron 6278 makes more sense for workstation-style multi-core throughput, while Core i5-10400F 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, Opteron 6278 is the stronger fit. You are getting 5.4% better PassMark, backed by 16 cores and 16 threads.

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

Core i5-10400F is the better buy right now. Core i5-10400F comes in at an unclear MSRP at $160 MSRP versus unclear MSRP, and it still gives you a 11.1% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Opteron 6278 is still stronger for heavier multi-core work with 5.4% better PassMark. It is also 100.0% better value on MSRP (81.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i5-10400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2012) and 50% larger total L3 cache (12 MB vs 8 MB). That makes it the safer long-term bet.

Core i5-10400F vs Opteron 6278 Technical Specifications

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

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.

Opteron 6278

The Opteron 6278 is manufactured by AMD. It was released in 1 May 2012 (13 years ago). It is based on the Interlagos (2011−2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.3 GHz. L3 cache: 8 MB (total). L2 cache: 2 MB (per module). Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 13,733 points. Launch price was $988.

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Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Opteron 6278 offers 16 cores / 16 threads — the Opteron 6278 has 10 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 3.3 GHz on the Opteron 6278 — a 26.3% clock advantage for the Core i5-10400F (base: 2.9 GHz vs 2.4 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Opteron 6278 uses Interlagos (2011−2012) (32 nm). In PassMark, the Core i5-10400F scores 13,029 against the Opteron 6278's 13,733 — a 5.3% lead for the Opteron 6278. L3 cache: 12 MB (total) on the Core i5-10400F vs 8 MB (total) on the Opteron 6278.

Feature	Core i5-10400F	Opteron 6278
Cores / Threads	6 / 12	16 / 16+167%
Boost Clock	4.3 GHz+30%	3.3 GHz
Base Clock	2.9 GHz+21%	2.4 GHz
L3 Cache	12 MB (total)+50%	8 MB (total)
L2 Cache	256K (per core)+12700%	2 MB (per module)
Process	14 nm-56%	32 nm
Architecture	Comet Lake (2020−2025)	Interlagos (2011−2012)
PassMark	13,029	13,733+5%
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454	—
Geekbench 6 Multi	5,783	—

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Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Opteron 6278 uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i5-10400F	Opteron 6278
Socket	LGA1200	G34
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 i5-10400F) / not specified (Opteron 6278). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.