Athlon II X3 450 vs Core i3-2100

Athlon II X3 450 vs Core i3-2100 Performance Spectrum

Athlon II X3 450

3 / 3

1,865

+0.5%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core i3-2100

2 / 4

1,856

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 X3 450 vs Core i3-2100 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 450 vs Core i3-2100: 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 450

2010

Why buy it

✅Better for gaming: +4.5% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $30 less on MSRP ($87 MSRP vs $117 MSRP).
✅Delivers 35.1% more PassMark for each dollar spent, at 21.4 vs 15.9 PassMark/$ ($87 MSRP vs $117 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (AMD Stock), unlike Core i3-2100.

Trade-offs

❌46.2% higher power demand at 95W vs 65W.

Core i3-2100

2011

Why buy it

✅Draws 65W instead of 95W, a 30W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Athlon II X3 450 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,856 vs 1,865).
❌Lower PassMark per dollar, at 15.9 vs 21.4 PassMark/$ ($117 MSRP vs $87 MSRP).
❌No boxed cooler included, unlike Athlon II X3 450.

Quick Answers

So, is Athlon II X3 450 better than Core i3-2100?

Yes. Athlon II X3 450 is the better all-around CPU here. It gives you a 4.5% average FPS lead across 50 shared CPU game tests in our data and 0.5% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Athlon II X3 450 is the better pick. According to our tests, it delivers 4.5% 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 450 is the stronger fit. You are getting 0.5% better PassMark, backed by 3 cores and 3 threads.

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

Athlon II X3 450 is the better buy right now. Athlon II X3 450 comes in $30 cheaper on MSRP at $87 MSRP versus $117 MSRP, and it still gives you a 4.5% average FPS lead across 50 shared CPU game tests in our data. It is also 35.1% better value on MSRP (21.4 vs 15.9 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i3-2100 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2010). That makes it the safer long-term bet.

Athlon II X3 450 vs Core i3-2100 Technical Specifications

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

Athlon II X3 450

The Athlon II X3 450 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 3.2 GHz, with boost up to 3.2 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: 1,865 points. Launch price was $45.

Core i3-2100

The Core i3-2100 is manufactured by Intel. It was released in 20 February 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,856 points. Launch price was $73.

⚡

Processing Power

The Athlon II X3 450 packs 3 cores / 3 threads, while the Core i3-2100 offers 2 cores / 4 threads — the Athlon II X3 450 has 1 more core. Boost clocks reach 3.2 GHz on the Athlon II X3 450 versus 3.1 GHz on the Core i3-2100 — a 3.2% clock advantage for the Athlon II X3 450 (base: 3.2 GHz vs 3.1 GHz). The Athlon II X3 450 uses the Rana (2009−2011) architecture (45 nm), while the Core i3-2100 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Athlon II X3 450 scores 1,865 against the Core i3-2100's 1,856 — a 0.5% lead for the Athlon II X3 450. L3 cache: 0 kB on the Athlon II X3 450 vs 3 MB (total) on the Core i3-2100.

Feature	Athlon II X3 450	Core i3-2100
Cores / Threads	3 / 3+50%	2 / 4
Boost Clock	3.2 GHz+3%	3.1 GHz
Base Clock	3.2 GHz+3%	3.1 GHz
L3 Cache	0 kB	3 MB (total)
L2 Cache	512 kB (per core)+100%	256 kB (per core)
Process	45 nm	32 nm-29%
Architecture	Rana (2009−2011)	Sandy Bridge (2011−2013)
PassMark	1,865	1,856
Geekbench 6 Single	380	—
Geekbench 6 Multi	980	—

🧠

Memory & Platform

The Athlon II X3 450 uses the AM3 socket (PCIe 2.0), while the Core i3-2100 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Athlon II X3 450	Core i3-2100
Socket	AM3	LGA1155
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

🔧

Advanced Features

Virtualization: AMD-V (Athlon II X3 450) / not specified (Core i3-2100). Primary use case: Athlon II X3 450 targets Desktop.

Feature	Athlon II X3 450	Core i3-2100
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Desktop	—

💰

Value Analysis

At launch, the Athlon II X3 450 was priced at $87, while the Core i3-2100 came in at $117. On launch pricing ($87 vs $117), Athlon II X3 450 was $30 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 450 delivers 21.4 pts/$ vs 15.9 pts/$ for the Core i3-2100 — making the Athlon II X3 450 the 29.9% better value option.

Feature	Athlon II X3 450	Core i3-2100
MSRP	$87-26%	$117
Performance per Dollar	21.4+35%	15.9
Release Date	2010	2011

Search Athlon II X3 450 on Amazon

Search Core i3-2100 on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.