Page Index

Pentium 3558U vs Pentium E6300

CPUCPUGPUGPU
Intel

Pentium 3558U

2 Cores2 Thrd512 WWMax: 1.7 GHz2014

Popular choices:

•••••••••
VS
Intel

Pentium E6300

2 Cores2 Thrd65 WWMax: 2.8 GHz2009

Popular choices:

•••••••••

Performance Spectrum - CPU

Pentium 3558U
2 / 2
1,041
+0.9%
brand logoCeleron U3400
brand logoCore 2 Duo L7200
brand logoCeleron 877
brand logoCeleron P4505
brand logoCore i5-12490F
brand logoCore Ultra 5 245HX
brand logoXeon W-3375
brand logoXeon w9-3575X
Pentium E6300
2 / 2
1,032
0.0%
brand logoCeleron U3400
brand logoCore 2 Duo L7200
brand logoCeleron B820
brand logoCeleron P4505
brand logoCore i5-12490F
brand logoCore Ultra 5 245HX
brand logoXeon W-3375
brand logoXeon w9-3575X

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Pentium 3558U

2014

Why buy it

  • ✅+0.9% higher PassMark.

Trade-offs

  • ❌687.7% higher power demand at 512W vs 65W.

Pentium E6300

2009

Why buy it

  • ✅Draws 65W instead of 512W, a 447W reduction.

Trade-offs

  • ❌Lower PassMark (1,032 vs 1,041).
  • ❌Launch MSRP is still $84 MSRP, while Pentium 3558U mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Pentium E6300 better than Pentium 3558U?
It depends on what matters more to you. For gaming, Pentium E6300 is ahead with 64.7% higher max boost clock. For rendering, compiling, streaming, and heavier multitasking, Pentium 3558U pulls ahead with 0.9% better PassMark.
Which one is better for streaming, content creation, and heavy multitasking?
For streaming, content creation, and heavier multitasking, Pentium 3558U is the better fit. You are getting 0.9% better PassMark, backed by 2 cores and 2 threads.
Which one is the smarter buy today, not just the cheaper CPU?
Pentium E6300 is the smarter buy today. Pentium E6300 is at an unclear MSRP at $84 MSRP versus unclear MSRP, and it gives you 64.7% higher max boost clock. The trade-off is that Pentium 3558U is still stronger for heavier multi-core work with 0.9% better PassMark. It is also 100.0% better value on MSRP (12.3 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.
Which one is more future-proof for 2026 and beyond?
Pentium 3558U is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2009) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

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.

Path of Exile 2

Path of Exile 2

PresetPentium 3558UPentium E6300
1080p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
1440p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
4K
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
Open Pentium 3558UOpen Pentium E6300
Counter-Strike 2

Counter-Strike 2

PresetPentium 3558UPentium E6300
1080p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
1440p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
4K
low26 FPS26 FPS
medium26 FPS26 FPS
high25 FPS26 FPS
ultra18 FPS26 FPS
Open Pentium 3558UOpen Pentium E6300
League of Legends

League of Legends

PresetPentium 3558UPentium E6300
1080p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
1440p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
4K
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
Open Pentium 3558UOpen Pentium E6300
Valorant

Valorant

PresetPentium 3558UPentium E6300
1080p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
1440p
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
4K
low26 FPS26 FPS
medium26 FPS26 FPS
high26 FPS26 FPS
ultra26 FPS26 FPS
Open Pentium 3558UOpen Pentium E6300
Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Pentium 3558U and Pentium E6300

Intel

Pentium 3558U

The Pentium 3558U is manufactured by Intel. It was released in 1 January 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,041 points. Launch price was $161.

Intel

Pentium E6300

The Pentium E6300 is manufactured by Intel. It was released in 9 May 2009 (16 years ago). It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,032 points. Launch price was $40.

⚡

Processing Power

Both the Pentium 3558U and Pentium E6300 share an identical 2-core/2-thread configuration. Boost clocks reach 1.7 GHz on the Pentium 3558U versus 2.8 GHz on the Pentium E6300 — a 48.9% clock advantage for the Pentium E6300 (base: 1.7 GHz vs 2.8 GHz). The Pentium 3558U uses the Haswell (2013−2015) architecture (22 nm), while the Pentium E6300 uses Wolfdale (2008−2010) (45 nm). In PassMark, the Pentium 3558U scores 1,041 against the Pentium E6300's 1,032 — a 0.9% lead for the Pentium 3558U. L3 cache: 2 MB on the Pentium 3558U vs 0 kB on the Pentium E6300.

FeaturePentium 3558UPentium E6300
Cores / Threads
2 / 2
2 / 2
Boost Clock
1.7 GHz
2.8 GHz+65%
Base Clock
1.7 GHz
2.8 GHz+65%
L3 Cache
2 MB
0 kB
L2 Cache
512 kB
2 MB (total)+300%
Process
22 nm-51%
45 nm
Architecture
Haswell (2013−2015)
Wolfdale (2008−2010)
PassMark
1,041
1,032
🧠

Memory & Platform

The Pentium 3558U uses the FCBGA1168 socket (PCIe 3.0), while the Pentium E6300 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.

FeaturePentium 3558UPentium E6300
Socket
FCBGA1168
LGA775
PCIe Generation
PCIe 3.0+173%
PCIe 1.1