A8-3520M vs Pentium G645

A8-3520M vs Pentium G645 Performance Spectrum

A8-3520M

4 / 4

1,441

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium G645

2 / 2

1,450

+0.6%

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.

A8-3520M vs Pentium G645 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.

A8-3520M vs Pentium G645: Pros, Cons & Final Verdict

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

A8-3520M

2011

Why buy it

✅Draws 35W instead of 65W, a 30W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 6620G, while Pentium G645 needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,441 vs 1,450).

Pentium G645

2012

Why buy it

Trade-offs

❌Launch MSRP is still $80 MSRP, while A8-3520M mostly shows up through inconsistent older-market listings.
❌85.7% higher power demand at 65W vs 35W.
❌No integrated graphics, while A8-3520M can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Pentium G645 better than A8-3520M?

Yes. Pentium G645 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, 0.6% 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, Pentium G645 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, Pentium G645 is the stronger fit. You are getting 0.6% better PassMark, backed by 2 cores and 2 threads.

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

Pentium G645 is the better buy right now. Pentium G645 comes in at an unclear MSRP at $80 MSRP versus unclear MSRP, and it still gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (18.1 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium G645 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2011) and more multi-core headroom with 2 cores / 2 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

A8-3520M vs Pentium G645 Technical Specifications

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

A8-3520M

The A8-3520M is manufactured by AMD. It was released in 2014-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 1.6 GHz, with boost up to 2.5 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FS1. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,441 points. Launch price was $90.

Pentium G645

The Pentium G645 is manufactured by Intel. It was released in 2 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.9 GHz, with boost up to 2.9 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: 1,450 points. Launch price was $80.

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Processing Power

The A8-3520M packs 4 cores / 4 threads, while the Pentium G645 offers 2 cores / 2 threads — the A8-3520M has 2 more cores. Boost clocks reach 2.5 GHz on the A8-3520M versus 2.9 GHz on the Pentium G645 — a 14.8% clock advantage for the Pentium G645 (base: 1.6 GHz vs 2.9 GHz). The A8-3520M uses the Llano (2011−2012) architecture (32 nm), while the Pentium G645 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the A8-3520M scores 1,441 against the Pentium G645's 1,450 — a 0.6% lead for the Pentium G645. L3 cache: 0 kB on the A8-3520M vs 3 MB (total) on the Pentium G645.

Feature	A8-3520M	Pentium G645
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	2.5 GHz	2.9 GHz+16%
Base Clock	1.6 GHz	2.9 GHz+81%
L3 Cache	0 kB	3 MB (total)
L2 Cache	1 MB (per core)+300%	256 kB (per core)
Process	32 nm	32 nm
Architecture	Llano (2011−2012)	Sandy Bridge (2011−2013)
PassMark	1,441	1,450
Geekbench 6 Single	255	—

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Memory & Platform

The A8-3520M uses the FS1 socket (PCIe 2.0), while the Pentium G645 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	A8-3520M	Pentium G645
Socket	FS1	LGA1155
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	20	—

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Advanced Features

Virtualization: AMD-V (A8-3520M) / not specified (Pentium G645). The A8-3520M includes integrated graphics (Radeon HD 6620G), while the Pentium G645 requires a dedicated GPU. Primary use case: A8-3520M targets Budget Laptop. Direct competitor: A8-3520M rivals Core i3-2330M.