Core 2 Quad Q9300 vs Core i5-655K

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.

Core 2 Quad Q9300 vs Core i5-655K 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.

Core 2 Quad Q9300 vs Core i5-655K: Pros, Cons & Final Verdict

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

Core 2 Quad Q9300

2008

Why buy it

Trade-offs

❌Lower PassMark (2,011 vs 2,017).
❌Lower PassMark per dollar, at 7.6 vs 9.3 PassMark/$ ($266 MSRP vs $216 MSRP).
❌30.1% higher power demand at 95W vs 73W.
❌No integrated graphics, while Core i5-655K can still boot and troubleshoot without a discrete GPU.

Core i5-655K

2010

Why buy it

✅Costs $50 less on MSRP ($216 MSRP vs $266 MSRP).
✅Delivers 23.5% more PassMark for each dollar spent, at 9.3 vs 7.6 PassMark/$ ($216 MSRP vs $266 MSRP).
✅Draws 73W instead of 95W, a 22W reduction.
✅Integrated graphics onboard with Intel HD Graphics (Westmere), while Core 2 Quad Q9300 needs a discrete GPU.

Trade-offs

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

Quick Answers

So, is Core i5-655K better than Core 2 Quad Q9300?

Yes. Core i5-655K is the better all-around CPU here. It gives you a 2.5% average FPS lead across 50 shared CPU game tests in our data, 0.3% 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, Core i5-655K is the better pick. According to our tests, it delivers 2.5% 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, Core i5-655K is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 4 threads.

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

Core i5-655K is the better buy right now. Core i5-655K comes in $50 cheaper on MSRP at $216 MSRP versus $266 MSRP, and it still gives you a 2.5% average FPS lead across 50 shared CPU game tests in our data. It is also 23.5% better value on MSRP (9.3 vs 7.6 PassMark/$), 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 i5-655K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008) and more multi-core headroom with 2 cores / 4 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Quad Q9300 vs Core i5-655K Technical Specifications

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

Core 2 Quad Q9300

The Core 2 Quad Q9300 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: 6 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 2,011 points. Launch price was $249.

Core i5-655K

The Core i5-655K is manufactured by Intel. It was released in 30 May 2010 (15 years ago). It is based on the Clarkdale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.46 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1156. Thermal design power (TDP): 73 Watt. Memory support: DDR3. Passmark benchmark score: 2,017 points. Launch price was $69.

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Processing Power

The Core 2 Quad Q9300 packs 4 cores / 4 threads, while the Core i5-655K offers 2 cores / 4 threads — the Core 2 Quad Q9300 has 2 more cores. Boost clocks reach 2.5 GHz on the Core 2 Quad Q9300 versus 3.46 GHz on the Core i5-655K — a 32.2% clock advantage for the Core i5-655K (base: 2.5 GHz vs 3.2 GHz). The Core 2 Quad Q9300 uses the Yorkfield (2007−2009) architecture (45 nm), while the Core i5-655K uses Clarkdale (2010−2011) (32 nm). In PassMark, the Core 2 Quad Q9300 scores 2,011 against the Core i5-655K's 2,017 — a 0.3% lead for the Core i5-655K. L3 cache: 0 kB on the Core 2 Quad Q9300 vs 4 MB (total) on the Core i5-655K.

Feature	Core 2 Quad Q9300	Core i5-655K
Cores / Threads	4 / 4+100%	2 / 4
Boost Clock	2.5 GHz	3.46 GHz+38%
Base Clock	2.5 GHz	3.2 GHz+28%
L3 Cache	0 kB	4 MB (total)
L2 Cache	6 MB (total)+2300%	256 kB (per core)
Process	45 nm	32 nm-29%
Architecture	Yorkfield (2007−2009)	Clarkdale (2010−2011)
PassMark	2,011	2,017
Geekbench 6 Single	—	560
Geekbench 6 Multi	—	1,250

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Memory & Platform

The Core 2 Quad Q9300 uses the LGA775 socket (PCIe 1.1), while the Core i5-655K uses LGA1156 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1066 on the Core 2 Quad Q9300 versus DDR3-1333 on the Core i5-655K — the Core i5-655K supports 25% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: P35,P45,X38,X48 (Core 2 Quad Q9300) and H55,H57,P55 (Core i5-655K).

Feature	Core 2 Quad Q9300	Core i5-655K
Socket	LGA775	LGA1156
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR3-1066	DDR3-1333+25%
Max RAM Capacity	16 GB	16 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	16

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Advanced Features

Virtualization: not specified (Core 2 Quad Q9300) / VT-x (Core i5-655K). The Core i5-655K includes integrated graphics (Intel HD Graphics (Westmere)), while the Core 2 Quad Q9300 requires a dedicated GPU. Primary use case: Core i5-655K targets Desktop.

Feature	Core 2 Quad Q9300	Core i5-655K
Integrated GPU	No	Yes
IGPU Model	—	Intel HD Graphics (Westmere)
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	VT-x
Target Use	—	Desktop

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Value Analysis

At launch, the Core 2 Quad Q9300 was priced at $266, while the Core i5-655K came in at $216. On launch pricing ($266 vs $216), Core i5-655K was $50 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Quad Q9300 delivers 7.6 pts/$ vs 9.3 pts/$ for the Core i5-655K — making the Core i5-655K the 21% better value option.

Feature	Core 2 Quad Q9300	Core i5-655K
MSRP	$266	$216-19%
Performance per Dollar	7.6	9.3+22%
Release Date	2008	2010

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