Core i3-6157U vs Xeon E5540

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 i3-6157U vs Xeon E5540 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 i3-6157U vs Xeon E5540: Pros, Cons & Final Verdict

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

Core i3-6157U

2016

Why buy it

✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Iris Graphics 550, while Xeon E5540 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5540 across 50 shared CPU benchmark tests.
❌Lower PassMark (2,782 vs 2,805).
❌Smaller total L3 cache (3 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon E5540, which brings 4 cores / 8 threads.
❌540% higher power demand at 512W vs 80W.

Xeon E5540

2009

Why buy it

✅Better for gaming: +9.2% higher average FPS across 50 shared CPU benchmark tests.
✅+166.7% larger total L3 cache (8 MB vs 3 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.
✅Draws 80W instead of 512W, a 432W reduction.

Trade-offs

❌No integrated graphics, while Core i3-6157U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Xeon E5540 better than Core i3-6157U?

Not really, because they are built for different jobs. Xeon E5540 makes more sense for workstation-style multi-core throughput, while Core i3-6157U 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 E5540 is the better pick. According to our tests, it delivers 9.2% 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 E5540 is the stronger fit. You are getting 0.8% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 166.7% larger total L3 cache (8 MB vs 3 MB).

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

Xeon E5540 still makes the most sense overall. Xeon E5540 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 9.2% average FPS lead across 50 shared CPU game tests in our data.

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

Core i3-6157U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2016 vs 2009). That makes it the safer long-term bet.

Core i3-6157U vs Xeon E5540 Technical Specifications

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

Core i3-6157U

The Core i3-6157U is manufactured by Intel. It was released in 1 September 2016 (9 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 3 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 28 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 2,782 points. Launch price was $304.

Xeon E5540

The Xeon E5540 is manufactured by Intel. It was released in 30 March 2009 (16 years ago). It is based on the Gainestown (2009−2010) architecture. It features 4 cores and 8 threads. Base frequency is 2.53 GHz, with boost up to 2.8 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 2,805 points. Launch price was $30.

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Processing Power

The Core i3-6157U packs 2 cores / 4 threads, while the Xeon E5540 offers 4 cores / 8 threads — the Xeon E5540 has 2 more cores. Boost clocks reach 2.4 GHz on the Core i3-6157U versus 2.8 GHz on the Xeon E5540 — a 15.4% clock advantage for the Xeon E5540 (base: 2.4 GHz vs 2.53 GHz). The Core i3-6157U uses the Skylake (2015−2016) architecture (14 nm), while the Xeon E5540 uses Gainestown (2009−2010) (45 nm). In PassMark, the Core i3-6157U scores 2,782 against the Xeon E5540's 2,805 — a 0.8% lead for the Xeon E5540. L3 cache: 3 MB on the Core i3-6157U vs 8 MB (total) on the Xeon E5540.

Feature	Core i3-6157U	Xeon E5540
Cores / Threads	2 / 4	4 / 8+100%
Boost Clock	2.4 GHz	2.8 GHz+17%
Base Clock	2.4 GHz	2.53 GHz+5%
L3 Cache	3 MB	8 MB (total)+167%
L2 Cache	512 kB+100%	256 kB (per core)
Process	14 nm-69%	45 nm
Architecture	Skylake (2015−2016)	Gainestown (2009−2010)
PassMark	2,782	2,805

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Memory & Platform

The Core i3-6157U uses the BGA1356 socket (PCIe 3.0), while the Xeon E5540 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i3-6157U	Xeon E5540
Socket	BGA1356	LGA1366
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	12	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i3-6157U) / not specified (Xeon E5540). The Core i3-6157U includes integrated graphics (Iris Graphics 550), while the Xeon E5540 requires a dedicated GPU. Primary use case: Core i3-6157U targets Mobile.