Athlon II X3 455 vs Core 2 Quad Q8300

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Athlon II X3 455

2010

Why buy it

✅Costs $91 less on MSRP ($88 MSRP vs $179 MSRP).
✅Delivers 105.6% more PassMark for each dollar spent, at 22.0 vs 10.7 PassMark/$ ($88 MSRP vs $179 MSRP).

Trade-offs

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

Core 2 Quad Q8300

2008

Why buy it

Trade-offs

❌Lower PassMark (1,917 vs 1,938).
❌Lower PassMark per dollar, at 10.7 vs 22.0 PassMark/$ ($179 MSRP vs $88 MSRP).

Athlon II X3 455

2010

Core 2 Quad Q8300

2008

Why buy it

✅Costs $91 less on MSRP ($88 MSRP vs $179 MSRP).
✅Delivers 105.6% more PassMark for each dollar spent, at 22.0 vs 10.7 PassMark/$ ($88 MSRP vs $179 MSRP).

Why buy it

Trade-offs

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

Trade-offs

❌Lower PassMark (1,917 vs 1,938).
❌Lower PassMark per dollar, at 10.7 vs 22.0 PassMark/$ ($179 MSRP vs $88 MSRP).

Quick Answers

So, is Athlon II X3 455 better than Core 2 Quad Q8300?

Yes. Athlon II X3 455 is the better overall CPU here. You are getting 1.1% better PassMark and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Athlon II X3 455 is the better fit because it leads the single-thread side of the matchup with 32% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Athlon II X3 455 is the better 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 the smarter buy today. Athlon II X3 455 is $91 cheaper on MSRP at $88 MSRP versus $179 MSRP, and it gives you 1.1% higher PassMark. It is also 105.6% better value on MSRP (22.0 vs 10.7 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Athlon II X3 455 is the more future-proof choice 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 4/4. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Athlon II X3 455 Benchmark Check

Core 2 Quad Q8300 Benchmark Check

Path of Exile 2

Preset	Athlon II X3 455	Core 2 Quad Q8300
1080p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
1440p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
4K
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	42 FPS	42 FPS
ultra	32 FPS	33 FPS

Open Athlon II X3 455 Open Core 2 Quad Q8300

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Athlon II X3 455	Core 2 Quad Q8300
1080p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
1440p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
4K
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	45 FPS	48 FPS
ultra	30 FPS	48 FPS

Open Athlon II X3 455 Open Core 2 Quad Q8300

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Athlon II X3 455	Core 2 Quad Q8300
1080p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
1440p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
4K
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS

Open Athlon II X3 455 Open Core 2 Quad Q8300

League of Legends

League of Legends

Valorant

Preset	Athlon II X3 455	Core 2 Quad Q8300
1080p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
1440p
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS
4K
low	48 FPS	48 FPS
medium	48 FPS	48 FPS
high	48 FPS	48 FPS
ultra	48 FPS	48 FPS

Open Athlon II X3 455 Open Core 2 Quad Q8300

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Athlon II X3 455 and Core 2 Quad Q8300

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.

Core 2 Quad Q8300

The Core 2 Quad Q8300 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 0 kB. L2 cache: 4 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,917 points. Launch price was $249.

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Processing Power

The Athlon II X3 455 packs 3 cores / 3 threads, while the Core 2 Quad Q8300 offers 4 cores / 4 threads — the Core 2 Quad Q8300 has 1 more core. Boost clocks reach 3.3 GHz on the Athlon II X3 455 versus 2.5 GHz on the Core 2 Quad Q8300 — a 27.6% clock advantage for the Athlon II X3 455 (base: 3.3 GHz vs 2.5 GHz). The Athlon II X3 455 uses the Rana (2009−2011) architecture (45 nm), while the Core 2 Quad Q8300 uses Yorkfield (2007−2009) (45 nm). In PassMark, the Athlon II X3 455 scores 1,938 against the Core 2 Quad Q8300's 1,917 — a 1.1% lead for the Athlon II X3 455. Both processors carry 0 kB of L3 cache.

Feature	Athlon II X3 455	Core 2 Quad Q8300
Cores / Threads	3 / 3	4 / 4+33%
Boost Clock	3.3 GHz+32%	2.5 GHz
Base Clock	3.3 GHz+32%	2.5 GHz
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	4 MB (total)+700%
Process	45 nm	45 nm
Architecture	Rana (2009−2011)	Yorkfield (2007−2009)
PassMark	1,938+1%	1,917

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Memory & Platform

The Athlon II X3 455 uses the AM3 socket (PCIe 2.0), while the Core 2 Quad Q8300 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Athlon II X3 455	Core 2 Quad Q8300
Socket	AM3	LGA775
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—

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Value Analysis

The Athlon II X3 455 launched at $88 MSRP, while the Core 2 Quad Q8300 debuted at $179. On MSRP ($88 vs $179), the Athlon II X3 455 is $91 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 455 delivers 22.0 pts/$ vs 10.7 pts/$ for the Core 2 Quad Q8300 — making the Athlon II X3 455 the 69.1% better value option.