Pentium Gold 6405U vs Xeon E5205

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.

Pentium Gold 6405U vs Xeon E5205 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.

Pentium Gold 6405U vs Xeon E5205: Pros, Cons & Final Verdict

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

Pentium Gold 6405U

2019

Why buy it

✅Draws 1W instead of 65W, a 64W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5205 across 45 shared CPU benchmark tests.
❌Lower PassMark (1,320 vs 1,325).
❌Smaller total L3 cache (2 MB vs 6 MB).

Xeon E5205

2007

Why buy it

✅Better for gaming: +3.3% higher average FPS across 45 shared CPU benchmark tests.
✅+200% larger total L3 cache (6 MB vs 2 MB).

Trade-offs

❌6400% higher power demand at 65W vs 1W.

Quick Answers

So, is Xeon E5205 better than Pentium Gold 6405U?

Not really, because they are built for different jobs. Xeon E5205 makes more sense for workstation-style multi-core throughput, while Pentium Gold 6405U 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 E5205 is the better pick. According to our tests, it delivers 3.3% more average FPS across 45 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon E5205 is the stronger fit. You are getting 0.4% better PassMark. It also has the larger cache pool with 200% larger total L3 cache (6 MB vs 2 MB).

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

Xeon E5205 still makes the most sense overall. Xeon E5205 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 3.3% average FPS lead across 45 shared CPU game tests in our data.

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

Pentium Gold 6405U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2007). That makes it the safer long-term bet.

Pentium Gold 6405U vs Xeon E5205 Technical Specifications

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

Pentium Gold 6405U

The Pentium Gold 6405U is manufactured by Intel. It was released in 31 October 2019 (6 years ago). It is based on the Comet Lake-U (2019−2020) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 2 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 1,320 points. Launch price was $161.

Xeon E5205

The Xeon E5205 is manufactured by Intel. It was released in 2015-01-01. Base frequency: 1.86 GHz. L3 cache: 6 MB L2 Cache. Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 1,325 points. Launch price was $800.

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Processing Power

The Pentium Gold 6405U is built on the Comet Lake-U (2019−2020) architecture. In PassMark, the Pentium Gold 6405U scores 1,320 against the Xeon E5205's 1,325 — a 0.4% lead for the Xeon E5205. L3 cache: 2 MB on the Pentium Gold 6405U vs 6 MB L2 Cache on the Xeon E5205.

Feature	Pentium Gold 6405U	Xeon E5205
Cores / Threads	2 / 4	—
Boost Clock	2.4 GHz	—
Base Clock	2.4 GHz+29%	1.86 GHz
L3 Cache	2 MB	6 MB L2 Cache+200%
L2 Cache	1 MB	—
Process	14 nm-69%	45 nm
Architecture	Comet Lake-U (2019−2020)	—
PassMark	1,320	1,325

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Memory & Platform

The Pentium Gold 6405U uses the FCBGA1528 socket (PCIe 3.0), while the Xeon E5205 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.