Ryzen 3 PRO 5355G vs Xeon E5-2666 V3

Ryzen 3 PRO 5355G vs Xeon E5-2666 V3 Performance Spectrum

Ryzen 3 PRO 5355G

4 / 8

14,033

0.0%

Ryzen Threadripper 2990WX

Ryzen Threadripper PRO 7945WX

Ryzen 9 9950X3D

Ryzen Threadripper 9960X

Xeon E5-2666 V3

10 / 20

14,044

+0.1%

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.

Ryzen 3 PRO 5355G vs Xeon E5-2666 V3 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.

Ryzen 3 PRO 5355G vs Xeon E5-2666 V3: Pros, Cons & Final Verdict

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

Ryzen 3 PRO 5355G

2024

Why buy it

✅Draws 65W instead of 135W, a 70W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2666 V3 across 50 shared CPU benchmark tests.
❌Lower PassMark (14,033 vs 14,044).
❌Smaller total L3 cache (8 MB vs 25 MB).
❌Less compelling for workstation-style loads than Xeon E5-2666 V3, which brings 10 cores / 20 threads.
❌Launch MSRP is still $130 MSRP, while Xeon E5-2666 V3 mostly shows up through inconsistent older-market listings.

Xeon E5-2666 V3

2014

Why buy it

✅Better for gaming: +3.6% higher average FPS across 50 shared CPU benchmark tests.
✅+212.5% larger total L3 cache (25 MB vs 8 MB).
✅Better for workstations and heavier parallel workloads: 10 cores / 20 threads.

Trade-offs

❌107.7% higher power demand at 135W vs 65W.

Quick Answers

So, is Xeon E5-2666 V3 better than Ryzen 3 PRO 5355G?

Not really, because they are built for different jobs. Xeon E5-2666 V3 makes more sense for workstation-style multi-core throughput, while Ryzen 3 PRO 5355G 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 E5-2666 V3 is the better pick. According to our tests, it delivers 3.6% 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 E5-2666 V3 is the stronger fit. You are getting 0.1% better PassMark, backed by 10 cores and 20 threads. It also has the larger cache pool with 212.5% larger total L3 cache (25 MB vs 8 MB).

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

Xeon E5-2666 V3 is still the faster CPU overall, but Ryzen 3 PRO 5355G is easier to justify if budget matters more than peak performance. Xeon E5-2666 V3 comes in at an unclear MSRP at unclear MSRP versus $130 MSRP, and it still gives you a 3.6% average FPS lead across 50 shared CPU game tests in our data. Ryzen 3 PRO 5355G is also 100.0% better value on MSRP (107.9 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Ryzen 3 PRO 5355G makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2014). That makes it the safer long-term bet.

Ryzen 3 PRO 5355G vs Xeon E5-2666 V3 Technical Specifications

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

Ryzen 3 PRO 5355G

The Ryzen 3 PRO 5355G is manufactured by AMD. It was released in 5 September 2024 (1 year ago). It is based on the Cezanne (2021−2025) architecture. It features 4 cores and 8 threads. Base frequency is 4 GHz, with boost up to 4.2 GHz. L3 cache: 8 MB. L2 cache: 512 kB (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 14,033 points. Launch price was $149.

Xeon E5-2666 V3

The Xeon E5-2666 V3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 10 cores and 20 threads. Base frequency is 2.9 GHz, with boost up to 3.5 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011-3. Thermal design power (TDP): 135 Watt. Memory support: DDR3, DDR4 2133 MHz Quad-channel. Passmark benchmark score: 14,044 points. Launch price was $800.

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Processing Power

The Ryzen 3 PRO 5355G packs 4 cores / 8 threads, while the Xeon E5-2666 V3 offers 10 cores / 20 threads — the Xeon E5-2666 V3 has 6 more cores. Boost clocks reach 4.2 GHz on the Ryzen 3 PRO 5355G versus 3.5 GHz on the Xeon E5-2666 V3 — a 18.2% clock advantage for the Ryzen 3 PRO 5355G (base: 4 GHz vs 2.9 GHz). The Ryzen 3 PRO 5355G uses the Cezanne (2021−2025) architecture (7 nm), while the Xeon E5-2666 V3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Ryzen 3 PRO 5355G scores 14,033 against the Xeon E5-2666 V3's 14,044 — a 0.1% lead for the Xeon E5-2666 V3. L3 cache: 8 MB on the Ryzen 3 PRO 5355G vs 25 MB (total) on the Xeon E5-2666 V3.

Feature	Ryzen 3 PRO 5355G	Xeon E5-2666 V3
Cores / Threads	4 / 8	10 / 20+150%
Boost Clock	4.2 GHz+20%	3.5 GHz
Base Clock	4 GHz+38%	2.9 GHz
L3 Cache	8 MB	25 MB (total)+213%
L2 Cache	512 kB (per core)+100%	256K (per core)
Process	7 nm-68%	22 nm
Architecture	Cezanne (2021−2025)	Haswell-EP (2014−2015)
PassMark	14,033	14,044

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Memory & Platform

The Ryzen 3 PRO 5355G uses the AM4 socket (PCIe 4.0), while the Xeon E5-2666 V3 uses LGA2011-3 (PCIe 3.0) — making them incompatible on the same motherboard.