Core 2 Quad Q8400 vs Pentium G3258

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 Q8400 vs Pentium G3258 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 Q8400 vs Pentium G3258: 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 Q8400

2009

Why buy it

✅+0.6% higher PassMark.
✅Includes a boxed cooler (true), unlike Pentium G3258.

Trade-offs

❌Lower PassMark per dollar, at 11.3 vs 27.5 PassMark/$ ($183 MSRP vs $75 MSRP).
❌75.9% higher power demand at 95W vs 54W.
❌No integrated graphics, while Pentium G3258 can still boot and troubleshoot without a discrete GPU.

Pentium G3258

2014

Why buy it

✅Costs $108 less on MSRP ($75 MSRP vs $183 MSRP).
✅Delivers 142.5% more PassMark for each dollar spent, at 27.5 vs 11.3 PassMark/$ ($75 MSRP vs $183 MSRP).
✅Draws 54W instead of 95W, a 41W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics, while Core 2 Quad Q8400 needs a discrete GPU.

Trade-offs

❌Lower PassMark (2,063 vs 2,076).
❌No boxed cooler included, unlike Core 2 Quad Q8400.

Quick Answers

So, is Pentium G3258 better than Core 2 Quad Q8400?

It depends on what you want from the system. For gaming, Pentium G3258 is ahead with a 0.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Quad Q8400 pulls ahead with 0.6% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core 2 Quad Q8400 is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 4 threads.

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

Pentium G3258 is the better buy right now. Pentium G3258 comes in $108 cheaper on MSRP at $75 MSRP versus $183 MSRP, and it still gives you a 0.9% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Quad Q8400 is still stronger for heavier multi-core work with 0.6% better PassMark. It is also 142.5% better value on MSRP (27.5 vs 11.3 PassMark/$), 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 G3258 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2009). That makes it the safer long-term bet.

Core 2 Quad Q8400 vs Pentium G3258 Technical Specifications

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

Core 2 Quad Q8400

The Core 2 Quad Q8400 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 2.66 GHz, with boost up to 0.67 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: 2,076 points. Launch price was $249.

Pentium G3258

The Pentium G3258 is manufactured by Intel. It was released in 2 June 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 53 Watt. Memory support: DDR3. Passmark benchmark score: 2,063 points. Launch price was $77.

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Processing Power

The Core 2 Quad Q8400 packs 4 cores / 4 threads, while the Pentium G3258 offers 2 cores / 2 threads — the Core 2 Quad Q8400 has 2 more cores. Boost clocks reach 0.67 GHz on the Core 2 Quad Q8400 versus 3.2 GHz on the Pentium G3258 — a 130.7% clock advantage for the Pentium G3258 (base: 2.66 GHz vs 3.2 GHz). The Core 2 Quad Q8400 uses the Yorkfield (2007−2009) architecture (45 nm), while the Pentium G3258 uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Quad Q8400 scores 2,076 against the Pentium G3258's 2,063 — a 0.6% lead for the Core 2 Quad Q8400. L3 cache: 0 kB on the Core 2 Quad Q8400 vs 3 MB (total) on the Pentium G3258.

Feature	Core 2 Quad Q8400	Pentium G3258
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	0.67 GHz	3.2 GHz+378%
Base Clock	2.66 GHz	3.2 GHz+20%
L3 Cache	0 kB	3 MB (total)
L2 Cache	4 MB (total)+1500%	256 kB (per core)
Process	45 nm	22 nm-51%
Architecture	Yorkfield (2007−2009)	Haswell (2013−2015)
PassMark	2,076	2,063
Cinebench R23 Multi	852	—
Geekbench 6 Single	369	—
Geekbench 6 Multi	1,155	—

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Memory & Platform

The Core 2 Quad Q8400 uses the LGA775 socket (PCIe 1.1), while the Pentium G3258 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR3 1333 MHz memory speed. The Pentium G3258 supports up to 32 GB of RAM compared to 16 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Quad Q8400) vs 16 (Pentium G3258) — the Pentium G3258 offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core 2 Quad Q8400	Pentium G3258
Socket	LGA775	LGA1150
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR3 1333 MHz	DDR3-1333
Max RAM Capacity	16 GB	32 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	0	16

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Advanced Features

Only the Pentium G3258 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Core 2 Quad Q8400) vs VT-x (Pentium G3258). The Pentium G3258 includes integrated graphics (HD Graphics), while the Core 2 Quad Q8400 requires a dedicated GPU. Primary use case: Core 2 Quad Q8400 targets Desktop, Pentium G3258 targets Desktop.

Feature	Core 2 Quad Q8400	Pentium G3258
Integrated GPU	No	Yes
IGPU Model	—	HD Graphics
Unlocked	No	Yes
AVX-512	No	No
Virtualization	true	VT-x
Target Use	Desktop	Desktop

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Value Analysis

At launch, the Core 2 Quad Q8400 was priced at $183, while the Pentium G3258 came in at $75. On launch pricing ($183 vs $75), Pentium G3258 was $108 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Quad Q8400 delivers 11.3 pts/$ vs 27.5 pts/$ for the Pentium G3258 — making the Pentium G3258 the 83.2% better value option.

Feature	Core 2 Quad Q8400	Pentium G3258
MSRP	$183	$75-59%
Performance per Dollar	11.3	27.5+143%
Release Date	2009	2014

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