Athlon II X3 420e vs Celeron 4305U

Athlon II X3 420e vs Celeron 4305U Performance Spectrum

Athlon II X3 420e

3 / 3

1,557

0.0%

Ryzen Threadripper PRO 5945WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron 4305U

2 / 2

1,562

+0.3%

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.

Athlon II X3 420e vs Celeron 4305U FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Athlon II X3 420e vs Celeron 4305U: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Athlon II X3 420e

2010

Why buy it

✅Includes a boxed cooler (Stock), unlike Celeron 4305U.

Trade-offs

❌Lower PassMark (1,557 vs 1,562).
❌200% higher power demand at 45W vs 15W.
❌No integrated graphics, while Celeron 4305U can still boot and troubleshoot without a discrete GPU.

Celeron 4305U

2019

Why buy it

✅+0.3% higher PassMark.
✅Draws 15W instead of 45W, a 30W reduction.
✅Integrated graphics onboard with Intel UHD Graphics 610, while Athlon II X3 420e needs a discrete GPU.

Trade-offs

❌No boxed cooler included, unlike Athlon II X3 420e.

Quick Answers

So, is Celeron 4305U better than Athlon II X3 420e?

It depends on what you want from the system. For gaming, Athlon II X3 420e is ahead with a 2.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Celeron 4305U pulls ahead with 0.3% better PassMark.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Celeron 4305U is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 2 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Celeron 4305U is the better buy right now. Celeron 4305U comes in in basically the same MSRP band at $107 MSRP versus $107 MSRP, and it still gives you 0.3% better PassMark. The compromise is that Athlon II X3 420e is still the better pure gaming CPU with a 2.3% average FPS lead across 50 shared CPU game tests in our data. It is also 0.3% better value on MSRP (14.6 vs 14.6 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

Celeron 4305U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2010) and more multi-core headroom with 2 cores / 2 threads instead of 3/3. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II X3 420e vs Celeron 4305U Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Athlon II X3 420e

The Athlon II X3 420e is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 1,557 points. Launch price was $116.

Celeron 4305U

The Celeron 4305U is manufactured by Intel. It was released in 16 April 2019 (6 years ago). It is based on the Whiskey Lake-U (2018−2019) architecture. It features 2 cores and 2 threads. Base frequency is 2.2 GHz, with boost up to 2.2 GHz. L3 cache: 2 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2133, LPDDR3-1866. Passmark benchmark score: 1,562 points. Launch price was $107.

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Processing Power

The Athlon II X3 420e packs 3 cores / 3 threads, while the Celeron 4305U offers 2 cores / 2 threads — the Athlon II X3 420e has 1 more core. Boost clocks reach 2.6 GHz on the Athlon II X3 420e versus 2.2 GHz on the Celeron 4305U — a 16.7% clock advantage for the Athlon II X3 420e (base: 2.6 GHz vs 2.2 GHz). The Athlon II X3 420e uses the Rana (2009−2011) architecture (45 nm), while the Celeron 4305U uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Athlon II X3 420e scores 1,557 against the Celeron 4305U's 1,562 — a 0.3% lead for the Celeron 4305U. L3 cache: 0 kB on the Athlon II X3 420e vs 2 MB (total) on the Celeron 4305U.

Feature	Athlon II X3 420e	Celeron 4305U
Cores / Threads	3 / 3+50%	2 / 2
Boost Clock	2.6 GHz+18%	2.2 GHz
Base Clock	2.6 GHz+18%	2.2 GHz
L3 Cache	0 kB	2 MB (total)
L2 Cache	512 kB (per core)+100%	256 kB (per core)
Process	45 nm	14 nm-69%
Architecture	Rana (2009−2011)	Whiskey Lake-U (2018−2019)
PassMark	1,557	1,562
Geekbench 6 Single	314	—
Geekbench 6 Multi	880	—

🧠

Memory & Platform

The Athlon II X3 420e uses the AM3 socket (PCIe 2.0), while the Celeron 4305U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X3 420e versus 2133 on the Celeron 4305U — the Celeron 4305U supports 60% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 4305U supports up to 64 GB of RAM compared to 16 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: 760G,785G,880G (Athlon II X3 420e) and Whiskey Lake-U (Celeron 4305U).

Feature	Athlon II X3 420e	Celeron 4305U
Socket	AM3	FCBGA1528
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	2133+60%
Max RAM Capacity	16 GB	64 GB+300%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	16

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (Athlon II X3 420e) vs true (Celeron 4305U). The Celeron 4305U includes integrated graphics (Intel UHD Graphics 610), while the Athlon II X3 420e requires a dedicated GPU. Primary use case: Athlon II X3 420e targets Legacy Desktop, Celeron 4305U targets Budget. Direct competitor: Athlon II X3 420e rivals Athlon II X3 415e; Celeron 4305U rivals Pentium Gold 5405U.

Feature	Athlon II X3 420e	Celeron 4305U
Integrated GPU	No	Yes
IGPU Model	—	Intel UHD Graphics 610
Unlocked	No	No
AVX-512	No	No
Virtualization	AMD-V	true
Target Use	Legacy Desktop	Budget

💰

Value Analysis

At launch, the Athlon II X3 420e was priced at $107, while the Celeron 4305U came in at $107. On launch pricing ($107 vs $107), Celeron 4305U was $0 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 420e delivers 14.6 pts/$ vs 14.6 pts/$ for the Celeron 4305U — making the Celeron 4305U the 0.3% better value option.

Feature	Athlon II X3 420e	Celeron 4305U
MSRP	$107	$107
Performance per Dollar	14.6	14.6
Release Date	2010	2019

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