Xeon E5-2643 v2 vs Xeon E3-1275 v6

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 E5-2643 v2 is positioned at rank 308 and the Xeon E3-1275 v6 is on rank 471, so the Xeon E5-2643 v2 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 E5-2643 v2

#1

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

4532%

#6

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

856%

#10

Xeon 6337P

MSRP: $60|Avg: $5

760%

#15

EPYC 9174F

MSRP: $194|Avg: $30

587%

#234

Xeon W-1250P

MSRP: $311|Avg: $311

100%

#237

Xeon w3-2535

MSRP: $739|Avg: $800

98%

#239

EPYC 7313P

MSRP: $913|Avg: $824

98%

#308

Xeon E5-2643 v2

MSRP: N/A|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Xeon E3-1275 v6

#1

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

6776%

#6

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

1279%

#10

Xeon 6337P

MSRP: $60|Avg: $5

1137%

#15

EPYC 9174F

MSRP: $194|Avg: $30

878%

#298

Xeon Gold 5418Y

MSRP: $1483|Avg: N/A

100%

#299

Xeon w5-3425

MSRP: $1189|Avg: $1189

99%

#300

EPYC 9255

MSRP: $2495|Avg: $1934

99%

#301

EPYC 8324P

MSRP: $1895|Avg: $3598

98%

#302

Xeon Gold 6414U

MSRP: $2296|Avg: $283

98%

#303

Ryzen Threadripper PRO 5975WX

MSRP: $2495|Avg: $2495

98%

#304

EPYC 7352

MSRP: $1350|Avg: $725

97%

#471

Xeon E3-1275 v6

MSRP: $499|Avg: $142

100%

#473

Pentium D1508

MSRP: $106|Avg: $106

100%

#476

Xeon E-2104G

MSRP: $193|Avg: $109

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 Xeon E3-1275 v6 (2017) utilizes 14 nm technology and DDR4-2400, DDR3L-1866, providing a fundamental performance advantage.

Insight	Xeon E5-2643 v2	Xeon E3-1275 v6
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	✅ More affordable ($0)	⚠️ Higher cost ($142)
Longevity	🛑 Legacy (Ivy Bridge-EP (2013) / 22 nm)	✨ Modern (Kaby Lake (2016−2019) / 14 nm)

💎 Value Proposition

The Xeon E5-2643 v2 (2013) relies on 22 nm technology and DDR3, placing it in a different performance category relative to modern standards.

Insight	Xeon E5-2643 v2	Xeon E3-1275 v6
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	✅ More affordable ($0)	⚠️ Higher cost ($142)

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 E5-2643 v2 Benchmark Check

Xeon E3-1275 v6 Benchmark Check

Technical Specifications

Side-by-side comparison of Xeon E5-2643 v2 and Xeon E3-1275 v6

Xeon E5-2643 v2

The Xeon E5-2643 v2 is manufactured by Intel. It was released in 1 September 2013 (12 years ago). It is based on the Ivy Bridge-EP (2013) architecture. It features 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 3.8 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 9,172 points. Launch price was $2,200.

Xeon E3-1275 v6

The Xeon E3-1275 v6 is manufactured by Intel. It was released in 28 March 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 4 cores and 8 threads. Base frequency is 3.8 GHz, with boost up to 4.2 GHz. L3 cache: 8 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 73 Watt. Memory support: DDR4-2400, DDR3L-1866. Passmark benchmark score: 9,202 points. Launch price was $339.

⚡

Processing Power

The Xeon E5-2643 v2 packs 6 cores / 12 threads, while the Xeon E3-1275 v6 offers 4 cores / 8 threads — the Xeon E5-2643 v2 has 2 more cores. Boost clocks reach 3.8 GHz on the Xeon E5-2643 v2 versus 4.2 GHz on the Xeon E3-1275 v6 — a 10% clock advantage for the Xeon E3-1275 v6 (base: 3.5 GHz vs 3.8 GHz). The Xeon E5-2643 v2 uses the Ivy Bridge-EP (2013) architecture (22 nm), while the Xeon E3-1275 v6 uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Xeon E5-2643 v2 scores 9,172 against the Xeon E3-1275 v6's 9,202 — a 0.3% lead for the Xeon E3-1275 v6. L3 cache: 15 MB (total) on the Xeon E5-2643 v2 vs 8 MB on the Xeon E3-1275 v6.

Feature	Xeon E5-2643 v2	Xeon E3-1275 v6
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	3.8 GHz	4.2 GHz+11%
Base Clock	3.5 GHz	3.8 GHz+9%
L3 Cache	15 MB (total)+88%	8 MB
L2 Cache	256 kB (per core)	1 MB+300%
Process	22 nm	14 nm-36%
Architecture	Ivy Bridge-EP (2013)	Kaby Lake (2016−2019)
PassMark	9,172	9,202

🧠

Memory & Platform

The Xeon E5-2643 v2 uses the LGA2011 socket (PCIe 5.0), while the Xeon E3-1275 v6 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.