
Pentium Gold 6405U vs Pentium 3550M

Pentium Gold 6405U

Pentium 3550M
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money. The Pentium Gold 6405U is positioned at rank 770 and the Pentium 3550M is on rank 293, so the Pentium 3550M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium Gold 6405U
Performance Per Dollar Pentium 3550M
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium Gold 6405U | Pentium 3550M |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Comet Lake-U (2019−2020) / 14 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Pentium Gold 6405U | Pentium 3550M |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Pentium Gold 6405U and Pentium 3550M

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.

Pentium 3550M
The Pentium 3550M is manufactured by Intel. It was released in 1 September 2013 (12 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 2.3 GHz, with boost up to 2.3 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA946. Thermal design power (TDP): 37 Watt. Memory support: DDR3. Passmark benchmark score: 1,327 points. Launch price was $134.
Processing Power
The Pentium Gold 6405U packs 2 cores / 4 threads, matching the Pentium 3550M's 2 cores. Boost clocks reach 2.4 GHz on the Pentium Gold 6405U versus 2.3 GHz on the Pentium 3550M — a 4.3% clock advantage for the Pentium Gold 6405U (base: 2.4 GHz vs 2.3 GHz). The Pentium Gold 6405U uses the Comet Lake-U (2019−2020) architecture (14 nm), while the Pentium 3550M uses Haswell (2013−2015) (22 nm). In PassMark, the Pentium Gold 6405U scores 1,320 against the Pentium 3550M's 1,327 — a 0.5% lead for the Pentium 3550M. L3 cache: 2 MB on the Pentium Gold 6405U vs 2 MB (total) on the Pentium 3550M.
| Feature | Pentium Gold 6405U | Pentium 3550M |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 2.4 GHz+4% | 2.3 GHz |
| Base Clock | 2.4 GHz+4% | 2.3 GHz |
| L3 Cache | 2 MB | 2 MB (total) |
| L2 Cache | 1 MB+300% | 256K (per core) |
| Process | 14 nm-36% | 22 nm |
| Architecture | Comet Lake-U (2019−2020) | Haswell (2013−2015) |
| PassMark | 1,320 | 1,327 |
Memory & Platform
The Pentium Gold 6405U uses the FCBGA1528 socket (PCIe 3.0), while the Pentium 3550M uses PGA946 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Pentium Gold 6405U | Pentium 3550M |
|---|---|---|
| Socket | FCBGA1528 | PGA946 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
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