Athlon II X2 265 vs Celeron 5305U

Athlon II X2 265 vs Celeron 5305U Performance Spectrum

Athlon II X2 265

2 / 2

1,324

+1.3%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron 5305U

2 / 2

1,307

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.

Athlon II X2 265 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 II X2 265 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 II X2 265

2010

Why buy it

✅Includes a boxed cooler (Stock), unlike Celeron 5305U.

Trade-offs

❌Lower Geekbench single-core performance for gaming (275 vs 480).
❌Lower Geekbench multi-core (520 vs 865).
❌Launch MSRP is still $83 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

✅+74.5% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 15W instead of 65W, a 50W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics (Comet Lake), while Athlon II X2 265 needs a discrete GPU.

Trade-offs

❌No boxed cooler included, unlike Athlon II X2 265.

Quick Answers

So, is Celeron 5305U better than Athlon II X2 265?

Yes. Celeron 5305U is the better all-around CPU here. It gives you a 0.2% average FPS lead across 26 shared CPU game tests in our data, 66.3% better Geekbench multi-core, 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 26 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 66.3% 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 $83 MSRP, and it still gives you a 0.2% average FPS lead across 26 shared CPU game tests in our data. Athlon II X2 265 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (16.0 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM3.

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 2010) 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 II X2 265 vs Celeron 5305U Technical Specifications

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

Athlon II X2 265

The Athlon II X2 265 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Regor (2009−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 65 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,324 points. Launch price was $83.

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 II X2 265 and Celeron 5305U share an identical 2-core/2-thread configuration. Boost clocks reach 3.3 GHz on the Athlon II X2 265 versus 2.3 GHz on the Celeron 5305U — a 35.7% clock advantage for the Athlon II X2 265 (base: 3.3 GHz vs 2.3 GHz). The Athlon II X2 265 uses the Regor (2009−2013) architecture (45 nm), while the Celeron 5305U uses Comet Lake-U (2019−2020) (14 nm). In PassMark, the Athlon II X2 265 scores 1,324 against the Celeron 5305U's 1,307 — a 1.3% lead for the Athlon II X2 265. Geekbench 6 single-core — the metric most relevant to gaming — records 275 vs 480, a 54.3% lead for the Celeron 5305U that directly translates to higher frame rates. Multi-core Geekbench: 520 vs 865 (49.8% advantage for the Celeron 5305U). L3 cache: 0 kB on the Athlon II X2 265 vs 2 MB on the Celeron 5305U.

Feature	Athlon II X2 265	Celeron 5305U
Cores / Threads	2 / 2	2 / 2
Boost Clock	3.3 GHz+43%	2.3 GHz
Base Clock	3.3 GHz+43%	2.3 GHz
L3 Cache	0 kB	2 MB
L2 Cache	1 MB	—
Process	45 nm	14 nm-69%
Architecture	Regor (2009−2013)	Comet Lake-U (2019−2020)
PassMark	1,324+1%	1,307
Geekbench 6 Single	275	480+75%
Geekbench 6 Multi	520	865+66%

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Memory & Platform

The Athlon II X2 265 uses the AM3 socket (PCIe 2.0), while the Celeron 5305U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X2 265 versus DDR4-2400 on the Celeron 5305U — the Celeron 5305U supports 80% 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: 0 (Athlon II X2 265) vs 12 (Celeron 5305U) — the Celeron 5305U offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: 760G,780G,785G,790GX,870,880G,890GX,890FX (Athlon II X2 265) and Comet Lake-U (Celeron 5305U).

Feature	Athlon II X2 265	Celeron 5305U
Socket	AM3	FCBGA1528
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	DDR4-2400+80%
Max RAM Capacity	16 GB	64 GB+300%
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	0	12

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Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (Athlon II X2 265) vs VT-x, VT-d (Celeron 5305U). The Celeron 5305U includes integrated graphics (UHD Graphics (Comet Lake)), while the Athlon II X2 265 requires a dedicated GPU. Primary use case: Athlon II X2 265 targets Legacy Desktop, Celeron 5305U targets Budget. Direct competitor: Athlon II X2 265 rivals Pentium E6700; Celeron 5305U rivals Pentium Gold 6405U.