Xeon E3-1585 v5 vs U300

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 Xeon E3-1585 v5 is positioned at rank 345 and the U300 is on rank 372, so the Xeon E3-1585 v5 offers better cost-efficiency for playing games.

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

Performance Per Dollar Xeon E3-1585 v5

#1

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

4943%

#6

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

933%

#10

Xeon 6337P

MSRP: $60|Avg: $5

829%

#15

EPYC 9174F

MSRP: $194|Avg: $30

641%

#253

Xeon W-2150B

MSRP: $499|Avg: $400

98%

#255

Xeon 6517P

MSRP: $1195|Avg: $1195

97%

#345

Xeon E3-1585 v5

MSRP: N/A|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar U300

#360

Atom x5-Z8300

MSRP: $20|Avg: N/A

518%

#361

Atom Z3735G

MSRP: $17|Avg: N/A

511%

#362

Core i5-480M

MSRP: $81|Avg: $77

469%

#363

Core i5-460M

MSRP: $80|Avg: $129

467%

#364

Core i5-2540M

MSRP: $266|Avg: $10

462%

#366

Core i5-450M

MSRP: $32|Avg: $31

447%

#367

Core i3-380M

MSRP: $49|Avg: $25

428%

#368

Core i5-430M

MSRP: N/A|Avg: $33

427%

#369

Core 2 Duo T6600

MSRP: N/A|Avg: $4

416%

#372

U300

MSRP: N/A|Avg: N/A

100%

#375

Pentium Dual Core T3200

MSRP: $64|Avg: $5

99%

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 U300 (2023) utilizes Intel 7 nm technology and DDR5-5200, DDR4-3200, LPDDR4x-4267, providing a fundamental performance advantage.

Insight	Xeon E3-1585 v5	U300
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Skylake-H (2015−2016) / 14 nm)	✨ Modern (Legacy / Intel 7 nm)

💎 Value Proposition

The Xeon E3-1585 v5 (2016) relies on 14 nm technology and DDR3L,LPDDR3 1600 MHz, DDR4 2133 MHz at 1.2V, placing it in a different performance category relative to modern standards.

Insight	Xeon E3-1585 v5	U300
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.

Xeon E3-1585 v5 Benchmark Check

U300 Benchmark Check

Technical Specifications

Side-by-side comparison of Xeon E3-1585 v5 and U300

Xeon E3-1585 v5

The Xeon E3-1585 v5 is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Skylake-H (2015−2016) architecture. It features 4 cores and 8 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 65 Watt. Memory support: DDR3L,LPDDR3 1600 MHz, DDR4 2133 MHz at 1.2V. Passmark benchmark score: 8,408 points. Launch price was $556.

U300

The U300 is manufactured by Intel. It was released in 1 January 2023 (2 years ago). It features 5 cores and 6 threads. Max frequency: 4.4 GHz. L3 cache: 8 MB Intel® Smart Cache. Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 55 Watt. Memory support: DDR5-5200, DDR4-3200, LPDDR4x-4267. Passmark benchmark score: 8,492 points. Launch price was $149.

⚡

Processing Power

The Xeon E3-1585 v5 packs 4 cores / 8 threads, while the U300 offers 5 cores / 6 threads — the U300 has 1 more core. Boost clocks reach 3.9 GHz on the Xeon E3-1585 v5 versus 4.4 GHz on the U300 — a 12% clock advantage for the U300. The Xeon E3-1585 v5 is built on the Skylake-H (2015−2016) architecture. In PassMark, the Xeon E3-1585 v5 scores 8,408 against the U300's 8,492 — a 1% lead for the U300. L3 cache: 8 MB (total) on the Xeon E3-1585 v5 vs 8 MB Intel® Smart Cache on the U300.

Feature	Xeon E3-1585 v5	U300
Cores / Threads	4 / 8	5 / 6+25%
Boost Clock	3.9 GHz	4.4 GHz+13%
Base Clock	3.5 GHz	—
L3 Cache	8 MB (total)	8 MB Intel® Smart Cache
L2 Cache	256 kB (per core)	—
Process	14 nm	Intel 7 nm-50%
Architecture	Skylake-H (2015−2016)	—
PassMark	8,408	8,492

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Memory & Platform

The Xeon E3-1585 v5 uses the BGA1440 socket (PCIe 5.0), while the U300 uses FCBGA1744 (PCIe 4.0) — making them incompatible on the same motherboard.