Athlon 300U vs Pentium Gold G6405

Athlon 300U vs Pentium Gold G6405 Performance Spectrum

Athlon 300U

2 / 4

3,861

+1.2%

Ryzen Threadripper 3990X

Pentium Gold G6405

2 / 4

3,817

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 300U vs Pentium Gold G6405 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 300U vs Pentium Gold G6405: Pros, Cons & Final Verdict

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

Athlon 300U

2019

Why buy it

✅+1.2% higher PassMark.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon RX Vega 3, while Pentium Gold G6405 needs a discrete GPU.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Pentium Gold G6405

2021

Why buy it

Trade-offs

❌Lower PassMark (3,817 vs 3,861).
❌No integrated graphics, while Athlon 300U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Athlon 300U better than Pentium Gold G6405?

It depends on what you want from the system. For gaming, Pentium Gold G6405 is ahead with a 0.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon 300U pulls ahead with 1.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Athlon 300U is the stronger fit. You are getting 1.2% better PassMark, backed by 2 cores and 4 threads.

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

Athlon 300U still makes the most sense overall. Athlon 300U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1.2% better PassMark.

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

Pentium Gold G6405 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2019). That makes it the safer long-term bet.

Athlon 300U vs Pentium Gold G6405 Technical Specifications

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

Athlon 300U

The Athlon 300U is manufactured by AMD. It was released in 2009-01-01. It is based on the Raven Ridge 2 (2019) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 3.3 GHz. L3 cache: 4 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: FP5. Thermal design power (TDP): 15 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 3,861 points. Launch price was $149.

Pentium Gold G6405

The Pentium Gold G6405 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 4.1 GHz, with boost up to 4.1 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,817 points. Launch price was $64.

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Processing Power

Both the Athlon 300U and Pentium Gold G6405 share an identical 2-core/4-thread configuration. Boost clocks reach 3.3 GHz on the Athlon 300U versus 4.1 GHz on the Pentium Gold G6405 — a 21.6% clock advantage for the Pentium Gold G6405 (base: 2.4 GHz vs 4.1 GHz). The Athlon 300U uses the Raven Ridge 2 (2019) architecture (14 nm), while the Pentium Gold G6405 uses Comet Lake-R (2021) (14 nm). In PassMark, the Athlon 300U scores 3,861 against the Pentium Gold G6405's 3,817 — a 1.1% lead for the Athlon 300U. Both processors carry 4 MB (total) of L3 cache.

Feature	Athlon 300U	Pentium Gold G6405
Cores / Threads	2 / 4	2 / 4
Boost Clock	3.3 GHz	4.1 GHz+24%
Base Clock	2.4 GHz	4.1 GHz+71%
L3 Cache	4 MB (total)	4 MB (total)
L2 Cache	512K (per core)+100%	256 kB (per core)
Process	14 nm	14 nm
Architecture	Raven Ridge 2 (2019)	Comet Lake-R (2021)
PassMark	3,861+1%	3,817
Geekbench 6 Single	900	—
Geekbench 6 Multi	1,800	—

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Memory & Platform

The Athlon 300U uses the FP5 socket (PCIe 3.0), while the Pentium Gold G6405 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Athlon 300U	Pentium Gold G6405
Socket	FP5	LGA1200
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	12	—

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Advanced Features

Virtualization: AMD-V (Athlon 300U) / not specified (Pentium Gold G6405). The Athlon 300U includes integrated graphics (Radeon RX Vega 3), while the Pentium Gold G6405 requires a dedicated GPU. Primary use case: Athlon 300U targets Budget Laptop.