Xeon E5-2665 vs Core i7-8559U

Xeon E5-2665

8 Cores16 Thrd115 WWMax: 3.1 GHz2012

Core i7-8559U

4 Cores8 Thrd28 WWMax: 4.5 GHz2018

Performance Spectrum - CPU

Xeon E5-2665

8 / 16

8,293

+0.2%

8,274

0.0%

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 Xeon E5-2665 is positioned at rank 348 and the Core i7-8559U is on rank 815, so the Xeon E5-2665 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 E5-2665

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

5011%

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

946%

#10

Xeon 6337P

MSRP: $60|Avg: $5

841%

#15

EPYC 9174F

MSRP: $194|Avg: $30

649%

#253

Xeon W-2150B

MSRP: $499|Avg: $400

99%

#255

Xeon 6517P

MSRP: $1195|Avg: $1195

99%

#348

Xeon E5-2665

MSRP: N/A|Avg: N/A

100%

#362

Xeon E5-2667 v2

MSRP: $300|Avg: $300

98%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core i7-8559U

#803

Atom x5-Z8300

MSRP: $20|Avg: N/A

1241%

#804

Atom Z3735G

MSRP: $17|Avg: N/A

1223%

#805

Core i5-480M

MSRP: $81|Avg: $77

1123%

#806

Core i5-460M

MSRP: $80|Avg: $129

1118%

#807

Core i5-2540M

MSRP: $266|Avg: $10

1107%

#809

Core i5-450M

MSRP: $32|Avg: $31

1069%

#810

Core i3-380M

MSRP: $49|Avg: $25

1025%

#811

Core i5-430M

MSRP: N/A|Avg: $33

1024%

#812

Core 2 Duo T6600

MSRP: N/A|Avg: $4

996%

#815

Core i7-8559U

MSRP: N/A|Avg: N/A

100%

#818

Core i7-8709G

MSRP: $338|Avg: $150

99%

#819

Celeron M 560

MSRP: $86|Avg: $10

99%

#824

Celeron Dual-Core T3000

MSRP: $80|Avg: $15

95%

#825

Pentium P6100

MSRP: $100|Avg: $16.39

95%

#828

Celeron M 575

MSRP: $86|Avg: $12

94%

#829

Core i7-10710U

MSRP: $415|Avg: N/A

94%

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 Core i7-8559U (2018) utilizes 14 nm technology and DDR4, providing a fundamental performance advantage.

Insight	Xeon E5-2665	Core i7-8559U
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm)	✨ Modern (Coffee Lake-U (2018−2019) / 14 nm)

💎 Value Proposition

The Xeon E5-2665 (2012) relies on 32 nm technology and DDR3, placing it in a different performance category relative to modern standards.

Insight	Xeon E5-2665	Core i7-8559U
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 E5-2665 Benchmark Check

Core i7-8559U Benchmark Check

Technical Specifications

Side-by-side comparison of Xeon E5-2665 and Core i7-8559U

Xeon E5-2665

The Xeon E5-2665 is manufactured by Intel. It was released in 6 March 2012 (13 years ago). It is based on the Sandy Bridge-EP (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.1 GHz. L3 cache: 20480 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 8,293 points. Launch price was $142.

Core i7-8559U

The Core i7-8559U is manufactured by Intel. It was released in 5 April 2018 (7 years ago). It is based on the Coffee Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 2.7 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 28 Watt. Memory support: DDR4. Passmark benchmark score: 8,274 points. Launch price was $431.

⚡

Processing Power

The Xeon E5-2665 packs 8 cores / 16 threads, while the Core i7-8559U offers 4 cores / 8 threads — the Xeon E5-2665 has 4 more cores. Boost clocks reach 3.1 GHz on the Xeon E5-2665 versus 4.5 GHz on the Core i7-8559U — a 36.8% clock advantage for the Core i7-8559U (base: 2.4 GHz vs 2.7 GHz). The Xeon E5-2665 uses the Sandy Bridge-EP (2012) architecture (32 nm), while the Core i7-8559U uses Coffee Lake-U (2018−2019) (14 nm). In PassMark, the Xeon E5-2665 scores 8,293 against the Core i7-8559U's 8,274 — a 0.2% lead for the Xeon E5-2665. L3 cache: 20480 kB (total) on the Xeon E5-2665 vs 8 MB (total) on the Core i7-8559U.

Feature	Xeon E5-2665	Core i7-8559U
Cores / Threads	8 / 16+100%	4 / 8
Boost Clock	3.1 GHz	4.5 GHz+45%
Base Clock	2.4 GHz	2.7 GHz+13%
L3 Cache	20480 kB (total)+150%	8 MB (total)
L2 Cache	256 kB (per core)	256K (per core)
Process	32 nm	14 nm-56%
Architecture	Sandy Bridge-EP (2012)	Coffee Lake-U (2018−2019)
PassMark	8,293	8,274

🧠

Memory & Platform

The Xeon E5-2665 uses the LGA2011 socket (PCIe 5.0), while the Core i7-8559U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Xeon E5-2665	Core i7-8559U
Socket	LGA2011	FCBGA1528
PCIe Generation	PCIe 5.0+67%	PCIe 3.0
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	384 GB	—
RAM Channels	4	—
ECC Support	✅	—
PCIe Lanes	40	—