Athlon X2 450 vs Celeron 5305U

Athlon X2 450 vs Celeron 5305U Performance Spectrum

Athlon X2 450

2 / 2

1,295

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron 5305U

2 / 2

1,307

+0.9%

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 X2 450 vs Celeron 5305U 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 X2 450 vs Celeron 5305U: Pros, Cons & Final Verdict

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

Athlon X2 450

2014

Why buy it

✅33.3% more PCIe lanes (16 vs 12) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Stock Cooler), unlike Celeron 5305U.

Trade-offs

❌Lower Geekbench single-core performance for gaming (450 vs 480).
❌Lower Geekbench multi-core (800 vs 865).
❌Launch MSRP is still $60 MSRP, while Celeron 5305U mostly shows up through inconsistent older-market listings.
❌333.3% higher power demand at 65W vs 15W.
❌No integrated graphics, while Celeron 5305U can still boot and troubleshoot without a discrete GPU.

Celeron 5305U

2020

Why buy it

✅+6.7% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 15W instead of 65W, a 50W reduction.
✅Integrated graphics onboard with UHD Graphics (Comet Lake), while Athlon X2 450 needs a discrete GPU.

Trade-offs

❌No boxed cooler included, unlike Athlon X2 450.

Quick Answers

So, is Celeron 5305U better than Athlon X2 450?

Yes. Celeron 5305U is the better all-around CPU here. It gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data, 8.1% better Geekbench multi-core, 0.9% higher PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Celeron 5305U is the better pick. According to our tests, it delivers 0.2% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Celeron 5305U is the stronger fit. You are getting 8.1% better Geekbench multi-core, backed by 2 cores and 2 threads.

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

Celeron 5305U is still the much better call for a fresh build. Celeron 5305U comes in at an unclear MSRP at unclear MSRP versus $60 MSRP, and it still gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data. Athlon X2 450 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2014 platform. Even with 100.0% better value on paper (21.6 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on FM2+.

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

Celeron 5305U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2014) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon X2 450 vs Celeron 5305U Technical Specifications

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

Athlon X2 450

The Athlon X2 450 is manufactured by AMD. It was released in 2009-01-01. It is based on the Kaveri (2014−2015) architecture. It features 2 cores and 2 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L2 cache: 1 MB (total). Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,295 points. Launch price was $149.

Celeron 5305U

The Celeron 5305U is manufactured by Intel. It was released in 2007-01-01. It is based on the Comet Lake-U (2019−2020) architecture. It features 2 cores and 2 threads. Base frequency is 2.3 GHz, with boost up to 2.3 GHz. L3 cache: 2 MB. Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2400, LPDDR3-2133. Passmark benchmark score: 1,307 points. Launch price was $69.

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Processing Power

Both the Athlon X2 450 and Celeron 5305U share an identical 2-core/2-thread configuration. Boost clocks reach 3.9 GHz on the Athlon X2 450 versus 2.3 GHz on the Celeron 5305U — a 51.6% clock advantage for the Athlon X2 450 (base: 3.5 GHz vs 2.3 GHz). The Athlon X2 450 uses the Kaveri (2014−2015) architecture (28 nm), while the Celeron 5305U uses Comet Lake-U (2019−2020) (14 nm). In PassMark, the Athlon X2 450 scores 1,295 against the Celeron 5305U's 1,307 — a 0.9% lead for the Celeron 5305U. Geekbench 6 single-core — the metric most relevant to gaming — records 450 vs 480, a 6.5% lead for the Celeron 5305U that directly translates to higher frame rates. Multi-core Geekbench: 800 vs 865 (7.8% advantage for the Celeron 5305U).

Feature	Athlon X2 450	Celeron 5305U
Cores / Threads	2 / 2	2 / 2
Boost Clock	3.9 GHz+70%	2.3 GHz
Base Clock	3.5 GHz+52%	2.3 GHz
L3 Cache	—	2 MB
L2 Cache	1 MB (total)	—
Process	28 nm	14 nm-50%
Architecture	Kaveri (2014−2015)	Comet Lake-U (2019−2020)
PassMark	1,295	1,307
Cinebench R23 Multi	1,500	—
Geekbench 6 Single	450	480+7%
Geekbench 6 Multi	800	865+8%

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Memory & Platform

The Athlon X2 450 uses the FM2+ socket (PCIe 3.0), while the Celeron 5305U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the Athlon X2 450 versus DDR4-2400 on the Celeron 5305U — the Celeron 5305U supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 5305U 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. PCIe lanes: 16 (Athlon X2 450) vs 12 (Celeron 5305U) — the Athlon X2 450 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A88X,A78,A68H (Athlon X2 450) and Comet Lake-U (Celeron 5305U).

Feature	Athlon X2 450	Celeron 5305U
Socket	FM2+	FCBGA1528
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR3-1866	DDR4-2400+29%
Max RAM Capacity	16 GB	64 GB+300%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16+33%	12

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Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (Athlon X2 450) vs VT-x, VT-d (Celeron 5305U). The Celeron 5305U includes integrated graphics (UHD Graphics (Comet Lake)), while the Athlon X2 450 requires a dedicated GPU. Primary use case: Athlon X2 450 targets Basic Desktop, Celeron 5305U targets Budget. Direct competitor: Athlon X2 450 rivals Core i3-3220; Celeron 5305U rivals Pentium Gold 6405U.