Athlon II X2 280 vs Pentium G840

Athlon II X2 280 vs Pentium G840 Performance Spectrum

Athlon II X2 280

2 / 2

1,355

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium G840

2 / 2

1,367

+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 II X2 280 vs Pentium G840 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 280 vs Pentium G840: 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 280

2013

Why buy it

✅Costs $14 less on MSRP ($50 MSRP vs $64 MSRP).
✅Delivers 26.9% more PassMark for each dollar spent, at 27.1 vs 21.4 PassMark/$ ($50 MSRP vs $64 MSRP).
✅Includes a boxed cooler (Stock), unlike Pentium G840.

Trade-offs

❌Lower PassMark (1,355 vs 1,367).

Pentium G840

2011

Why buy it

✅+0.9% higher PassMark.

Trade-offs

❌Lower PassMark per dollar, at 21.4 vs 27.1 PassMark/$ ($64 MSRP vs $50 MSRP).
❌No boxed cooler included, unlike Athlon II X2 280.

Quick Answers

So, is Athlon II X2 280 better than Pentium G840?

It depends on what you want from the system. For gaming, Athlon II X2 280 is ahead with a 2.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium G840 pulls ahead with 0.9% better PassMark.

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

For streaming, content creation, and heavier multitasking, Pentium G840 is the stronger fit. You are getting 0.9% better PassMark, backed by 2 cores and 2 threads.

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

Athlon II X2 280 is the better buy right now. Athlon II X2 280 comes in $14 cheaper on MSRP at $50 MSRP versus $64 MSRP, and it still gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Pentium G840 is still stronger for heavier multi-core work with 0.9% better PassMark. It is also 26.9% better value on MSRP (27.1 vs 21.4 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Athlon II X2 280 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2011). That makes it the safer long-term bet.

Athlon II X2 280 vs Pentium G840 Technical Specifications

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

Athlon II X2 280

The Athlon II X2 280 is manufactured by AMD. It was released in 6 February 2013 (12 years ago). It is based on the Regor (2009−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.6 GHz, with boost up to 3.6 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: 1,355 points. Launch price was $100.

Pentium G840

The Pentium G840 is manufactured by Intel. It was released in 22 May 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 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: 1,367 points. Launch price was $60.

⚡

Processing Power

Both the Athlon II X2 280 and Pentium G840 share an identical 2-core/2-thread configuration. Boost clocks reach 3.6 GHz on the Athlon II X2 280 versus 2.8 GHz on the Pentium G840 — a 25% clock advantage for the Athlon II X2 280 (base: 3.6 GHz vs 2.8 GHz). The Athlon II X2 280 uses the Regor (2009−2013) architecture (45 nm), while the Pentium G840 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Athlon II X2 280 scores 1,355 against the Pentium G840's 1,367 — a 0.9% lead for the Pentium G840. L3 cache: 0 kB on the Athlon II X2 280 vs 3 MB (total) on the Pentium G840.

Feature	Athlon II X2 280	Pentium G840
Cores / Threads	2 / 2	2 / 2
Boost Clock	3.6 GHz+29%	2.8 GHz
Base Clock	3.6 GHz+29%	2.8 GHz
L3 Cache	0 kB	3 MB (total)
L2 Cache	1 MB+300%	256 kB (per core)
Process	45 nm	32 nm-29%
Architecture	Regor (2009−2013)	Sandy Bridge (2011−2013)
PassMark	1,355	1,367
Geekbench 6 Single	290	—
Geekbench 6 Multi	550	—

🧠

Memory & Platform

The Athlon II X2 280 uses the AM3 socket (PCIe 2.0), while the Pentium G840 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Athlon II X2 280	Pentium G840
Socket	AM3	LGA1155
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	0	—

🔧

Advanced Features

Virtualization: AMD-V (Athlon II X2 280) / not specified (Pentium G840). Primary use case: Athlon II X2 280 targets Legacy Desktop. Direct competitor: Athlon II X2 280 rivals Pentium E6700.

Feature	Athlon II X2 280	Pentium G840
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Legacy Desktop	—

💰

Value Analysis

At launch, the Athlon II X2 280 was priced at $50, while the Pentium G840 came in at $64. On launch pricing ($50 vs $64), Athlon II X2 280 was $14 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X2 280 delivers 27.1 pts/$ vs 21.4 pts/$ for the Pentium G840 — making the Athlon II X2 280 the 23.7% better value option.

Feature	Athlon II X2 280	Pentium G840
MSRP	$50-22%	$64
Performance per Dollar	27.1+27%	21.4
Release Date	2013	2011

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