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 i5-8400 vs Xeon E5-2680 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 i5-8400 vs Xeon E5-2680: Pros, Cons & Final Verdict

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

Core i5-8400

2017

Why buy it

✅Costs $3,044 less on MSRP ($182 MSRP vs $3,226 MSRP).
✅Delivers 1661.1% more PassMark for each dollar spent, at 50.7 vs 2.9 PassMark/$ ($182 MSRP vs $3,226 MSRP).
✅Draws 65W instead of 130W, a 65W reduction.
✅Integrated graphics onboard with UHD Graphics 630, while Xeon E5-2680 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2680 across 50 shared CPU benchmark tests.
❌Lower PassMark (9,229 vs 9,289).
❌Smaller total L3 cache (9 MB vs 20 MB).
❌Less compelling for workstation-style loads than Xeon E5-2680, which brings 8 cores / 16 threads and 40 PCIe lanes.

Xeon E5-2680

2012

Why buy it

✅Better for gaming: +20.7% higher average FPS across 50 shared CPU benchmark tests.
✅+122.2% larger total L3 cache (20 MB vs 9 MB).
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads, plus 40 PCIe lanes vs 16.
✅150% more PCIe lanes (40 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 2.9 vs 50.7 PassMark/$ ($3,226 MSRP vs $182 MSRP).
❌100% higher power demand at 130W vs 65W.
❌No integrated graphics, while Core i5-8400 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Xeon E5-2680 better than Core i5-8400?

Not really, because they are built for different jobs. Xeon E5-2680 makes more sense for workstation-style multi-core throughput, while Core i5-8400 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon E5-2680 is the better pick. According to our tests, it delivers 20.7% 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, Xeon E5-2680 is the stronger fit. You are getting 0.7% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 122.2% larger total L3 cache (20 MB vs 9 MB).

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

Xeon E5-2680 is still the much better call for a fresh build. Xeon E5-2680 comes in 1672.5% more expensive on MSRP at $3,226 MSRP versus $182 MSRP, and it still gives you a 20.7% average FPS lead across 50 shared CPU game tests in our data. Core i5-8400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2017 platform. Even with 1661.1% better value on paper (50.7 vs 2.9 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

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

Core i5-8400 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2012). That makes it the safer long-term bet.

Core i5-8400 vs Xeon E5-2680 Technical Specifications

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

Core i5-8400

The Core i5-8400 is manufactured by Intel. It was released in 5 October 2017 (8 years ago). It is based on the Coffee Lake-S (2017−2018) architecture. It features 6 cores and 6 threads. Base frequency is 2.8 GHz, with boost up to 4 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 9,229 points. Launch price was $182.

Xeon E5-2680

The Xeon E5-2680 is manufactured by Intel. It was released in 6 March 2012 (13 years ago). It is based on the Sandy Bridge-EP (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.7 GHz, with boost up to 3.5 GHz. L3 cache: 20 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 9,289 points. Launch price was $1,723.

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Processing Power

The Core i5-8400 packs 6 cores / 6 threads, while the Xeon E5-2680 offers 8 cores / 16 threads — the Xeon E5-2680 has 2 more cores. Boost clocks reach 4 GHz on the Core i5-8400 versus 3.5 GHz on the Xeon E5-2680 — a 13.3% clock advantage for the Core i5-8400 (base: 2.8 GHz vs 2.7 GHz). The Core i5-8400 uses the Coffee Lake-S (2017−2018) architecture (14 nm), while the Xeon E5-2680 uses Sandy Bridge-EP (2012) (32 nm). In PassMark, the Core i5-8400 scores 9,229 against the Xeon E5-2680's 9,289 — a 0.6% lead for the Xeon E5-2680. L3 cache: 9 MB (total) on the Core i5-8400 vs 20 MB (total) on the Xeon E5-2680.

Feature	Core i5-8400	Xeon E5-2680
Cores / Threads	6 / 6	8 / 16+33%
Boost Clock	4 GHz+14%	3.5 GHz
Base Clock	2.8 GHz+4%	2.7 GHz
L3 Cache	9 MB (total)	20 MB (total)+122%
L2 Cache	256K (per core)	256K (per core)
Process	14 nm-56%	32 nm
Architecture	Coffee Lake-S (2017−2018)	Sandy Bridge-EP (2012)
PassMark	9,229	9,289

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Memory & Platform

The Core i5-8400 uses the LGA1151 socket (PCIe 3.0), while the Xeon E5-2680 uses LGA2011 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-8400 versus DDR3-1600 on the Xeon E5-2680 — the Core i5-8400 supports 66.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5-2680 supports up to 384 GB of RAM compared to 128 GB — 200% more capacity for professional workloads. Memory channels: 2 (Core i5-8400) vs 4 (Xeon E5-2680). PCIe lanes: 16 (Core i5-8400) vs 40 (Xeon E5-2680) — the Xeon E5-2680 offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 300 series (Core i5-8400) and Intel X79,Intel C602 (Xeon E5-2680).

Feature	Core i5-8400	Xeon E5-2680
Socket	LGA1151	LGA2011
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2666+67%	DDR3-1600
Max RAM Capacity	128 GB	384 GB+200%
RAM Channels	2	4+100%
ECC Support	No	Yes
PCIe Lanes	16	40+150%

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Advanced Features

Virtualization: VT-x, VT-d (Core i5-8400) / not specified (Xeon E5-2680). The Core i5-8400 includes integrated graphics (UHD Graphics 630), while the Xeon E5-2680 requires a dedicated GPU. Primary use case: Core i5-8400 targets Desktop.

Feature	Core i5-8400	Xeon E5-2680
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 630	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	Desktop	—

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Value Analysis

At launch, the Core i5-8400 was priced at $182, while the Xeon E5-2680 came in at $3226. On launch pricing ($182 vs $3226), Core i5-8400 was $3044 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-8400 delivers 50.7 pts/$ vs 2.9 pts/$ for the Xeon E5-2680 — making the Core i5-8400 the 178.5% better value option.

Feature	Core i5-8400	Xeon E5-2680
MSRP	$182-94%	$3226
Performance per Dollar	50.7+1648%	2.9
Release Date	2017	2012

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