Pentium Gold G6405 vs Xeon E5-2603 v3

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.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Xeon E5-2603 v3

#1

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

10864%

#6

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

2051%

#10

Xeon 6337P

MSRP: $60|Avg: $5

1822%

#15

EPYC 9174F

MSRP: $194|Avg: $30

1408%

#380

Xeon Gold 6526Y

MSRP: $2878|Avg: N/A

99%

#382

Xeon Platinum 8352Y

MSRP: $3995|Avg: N/A

98%

#383

EPYC 7551P

MSRP: $2100|Avg: $329

95%

#384

Ryzen Threadripper PRO 7985WX

MSRP: $7349|Avg: $7999

95%

#635

Xeon E5-2603 v3

MSRP: N/A|Avg: N/A

100%

#636

Xeon E5-2680 v2

MSRP: $667|Avg: $462

100%

#640

Xeon W-2104

MSRP: $294|Avg: $309

98%

#643

Xeon E5-2620 v3

MSRP: $417|Avg: $80

97%

#650

Xeon E3-1275L v3

MSRP: $350|Avg: $29

95%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Generational Difference: This comparison involves processors from different technological eras. The Pentium Gold G6405 (2021) utilizes 14 nm technology and DDR4-2666, providing a fundamental performance advantage.

Insight	Pentium Gold G6405	Xeon E5-2603 v3
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-R (2021) / 14 nm)	🛑 Legacy (Haswell-EP (2014−2015) / 22 nm)

💎 Value Proposition

The Xeon E5-2603 v3 (2014) relies on 22 nm technology and DDR4-1600, placing it in a different performance category relative to modern standards.

Insight	Pentium Gold G6405	Xeon E5-2603 v3
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	Equivalent pricing	Equivalent pricing

Performance Check

Paired with RTX 4090

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.

Pentium Gold G6405 Benchmark Check

Xeon E5-2603 v3 Benchmark Check

Technical Specifications

Side-by-side comparison of Pentium Gold G6405 and Xeon E5-2603 v3

Pentium Gold G6405

The Pentium Gold G6405 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 4.1 GHz, with boost up to 4.1 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,817 points. Launch price was $64.

Xeon E5-2603 v3

The Xeon E5-2603 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 6 cores and 6 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 15 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 85 Watt. Memory support: DDR4-1600. Passmark benchmark score: 3,825 points. Launch price was $800.

⚡

Processing Power

The Pentium Gold G6405 packs 2 cores / 4 threads, while the Xeon E5-2603 v3 offers 6 cores / 6 threads — the Xeon E5-2603 v3 has 4 more cores. Boost clocks reach 4.1 GHz on the Pentium Gold G6405 versus 1.6 GHz on the Xeon E5-2603 v3 — a 87.7% clock advantage for the Pentium Gold G6405 (base: 4.1 GHz vs 1.6 GHz). The Pentium Gold G6405 uses the Comet Lake-R (2021) architecture (14 nm), while the Xeon E5-2603 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Pentium Gold G6405 scores 3,817 against the Xeon E5-2603 v3's 3,825 — a 0.2% lead for the Xeon E5-2603 v3. L3 cache: 4 MB (total) on the Pentium Gold G6405 vs 15 MB (total) on the Xeon E5-2603 v3.

Feature	Pentium Gold G6405	Xeon E5-2603 v3
Cores / Threads	2 / 4	6 / 6+200%
Boost Clock	4.1 GHz+156%	1.6 GHz
Base Clock	4.1 GHz+156%	1.6 GHz
L3 Cache	4 MB (total)	15 MB (total)+275%
L2 Cache	256 kB (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Comet Lake-R (2021)	Haswell-EP (2014−2015)
PassMark	3,817	3,825

🧠

Memory & Platform

The Pentium Gold G6405 uses the LGA1200 socket (PCIe 3.0), while the Xeon E5-2603 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.