Athlon II X3 455 vs Celeron M 575

Athlon II X3 455 vs Celeron M 575 Performance Spectrum

Athlon II X3 455

3 / 3

1,938

+1.1%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron M 575

1 / 1

1,917

0.0%

Pentium 3556U

Pentium Dual Core T4400

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 455 vs Celeron M 575 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 455 vs Celeron M 575: 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 455

2010

Why buy it

Trade-offs

❌
2.3% HIGHER MSRP
$88 MSRPvs$86 MSRP
❌9400% higher power demand at 95W vs 1W.

Celeron M 575

2008

Why buy it

✅Costs $2 less on MSRP ($86 MSRP vs $88 MSRP).
✅Draws 1W instead of 95W, a 94W reduction.

Trade-offs

❌Lower PassMark (1,917 vs 1,938).

Quick Answers

So, is Athlon II X3 455 better than Celeron M 575?

Yes. Athlon II X3 455 is the better all-around CPU here. It gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data, 1.1% better 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, Athlon II X3 455 is the better pick. According to our tests, it delivers 1.6% 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, Athlon II X3 455 is the stronger fit. You are getting 1.1% better PassMark, backed by 3 cores and 3 threads.

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

Athlon II X3 455 is still the much better call for a fresh build. Athlon II X3 455 comes in 2.3% more expensive on MSRP at $88 MSRP versus $86 MSRP, and it still gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data. Celeron M 575 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2008 platform. Even with 1.2% better value on paper (22.3 vs 22.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA478.

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

Athlon II X3 455 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008) and more multi-core headroom with 3 cores / 3 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II X3 455 vs Celeron M 575 Technical Specifications

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

Athlon II X3 455

The Athlon II X3 455 is manufactured by AMD. It was released in 7 December 2010 (14 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,938 points. Launch price was $88.

Celeron M 575

The Celeron M 575 is manufactured by Intel. It was released in 1 June 2008 (17 years ago). It is based on the Merom (2006−2008) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,917 points. Launch price was $86.

⚡

Processing Power

The Athlon II X3 455 packs 3 cores / 3 threads, while the Celeron M 575 offers 1 cores / 1 threads — the Athlon II X3 455 has 2 more cores. Boost clocks reach 3.3 GHz on the Athlon II X3 455 versus 2 GHz on the Celeron M 575 — a 49.1% clock advantage for the Athlon II X3 455. The Athlon II X3 455 uses the Rana (2009−2011) architecture (45 nm), while the Celeron M 575 uses Merom (2006−2008) (65 nm). In PassMark, the Athlon II X3 455 scores 1,938 against the Celeron M 575's 1,917 — a 1.1% lead for the Athlon II X3 455.

Feature	Athlon II X3 455	Celeron M 575
Cores / Threads	3 / 3+200%	1 / 1
Boost Clock	3.3 GHz+65%	2 GHz
Base Clock	3.3 GHz	—
L3 Cache	0 kB	—
L2 Cache	512 kB (per core)	1 MB+100%
Process	45 nm-31%	65 nm
Architecture	Rana (2009−2011)	Merom (2006−2008)
PassMark	1,938+1%	1,917

🧠

Memory & Platform

The Athlon II X3 455 uses the AM3 socket (PCIe 2.0), while the Celeron M 575 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X3 455 versus 800 on the Celeron M 575 — the Athlon II X3 455 supports 66.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon II X3 455 supports up to 32 GB of RAM compared to 4 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: AMD AM3 (Athlon II X3 455) and GL40,GM45 (Celeron M 575).

Feature	Athlon II X3 455	Celeron M 575
Socket	AM3	PGA478
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3-1333+67%	800
Max RAM Capacity	32 GB+700%	4 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	0

🔧

Advanced Features

Virtualization: not specified (Athlon II X3 455) / false (Celeron M 575). Direct competitor: Celeron M 575 rivals Mobile Sempron SI-40.

Feature	Athlon II X3 455	Celeron M 575
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	No
AVX-512	—	No
Virtualization	—	false

💰

Value Analysis

At launch, the Athlon II X3 455 was priced at $88, while the Celeron M 575 came in at $86. On launch pricing ($88 vs $86), Celeron M 575 was $2 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 455 delivers 22.0 pts/$ vs 22.3 pts/$ for the Celeron M 575 — making the Celeron M 575 the 1.2% better value option.

Feature	Athlon II X3 455	Celeron M 575
MSRP	$88	$86-2%
Performance per Dollar	22.0	22.3+1%
Release Date	2010	2008

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