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 G2140 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 G2140: 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

✅+25.5% higher Geekbench multi-core.

Trade-offs

❌Lower Geekbench single-core performance for gaming (369 vs 550).
❌Lower PassMark per dollar, at 11.3 vs 20.9 PassMark/$ ($183 MSRP vs $100 MSRP).
❌72.7% higher power demand at 95W vs 55W.
❌No integrated graphics, while Pentium G2140 can still boot and troubleshoot without a discrete GPU.

Pentium G2140

2013

Why buy it

✅+49.1% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Costs $83 less on MSRP ($100 MSRP vs $183 MSRP).
✅Delivers 84.4% more PassMark for each dollar spent, at 20.9 vs 11.3 PassMark/$ ($100 MSRP vs $183 MSRP).
✅Draws 55W instead of 95W, a 40W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench multi-core (920 vs 1,155).

Quick Answers

So, is Pentium G2140 better than Core 2 Quad Q8400?

It depends on what you want from the system. For gaming, Pentium G2140 is ahead with a 2.1% 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 25.5% better Geekbench multi-core.

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 25.5% better Geekbench multi-core, backed by 4 cores and 4 threads.

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

Pentium G2140 is the better buy right now. Pentium G2140 comes in $83 cheaper on MSRP at $100 MSRP versus $183 MSRP, and it still gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Quad Q8400 is still stronger for heavier multi-core work with 25.5% better Geekbench multi-core. It is also 84.4% better value on MSRP (20.9 vs 11.3 PassMark/$), 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 G2140 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2009). That makes it the safer long-term bet.

Core 2 Quad Q8400 vs Pentium G2140 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 G2140

The Pentium G2140 is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 2 threads. Base frequency: 3.3 GHz. L3 cache: 3 MB Intel® Smart Cache. Built on 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 55 Watt. Memory support: DDR3-1333, DDR3-1600. Passmark benchmark score: 2,092 points. Launch price was $69.

⚡

Processing Power

The Core 2 Quad Q8400 packs 4 cores / 4 threads, while the Pentium G2140 offers 2 cores / 2 threads — the Core 2 Quad Q8400 has 2 more cores. The Core 2 Quad Q8400 is built on the Yorkfield (2007−2009) architecture. In PassMark, the Core 2 Quad Q8400 scores 2,076 against the Pentium G2140's 2,092 — a 0.8% lead for the Pentium G2140. Geekbench 6 single-core — the metric most relevant to gaming — records 369 vs 550, a 39.4% lead for the Pentium G2140 that directly translates to higher frame rates. Multi-core Geekbench: 1,155 vs 920 (22.7% advantage for the Core 2 Quad Q8400). L3 cache: 0 kB on the Core 2 Quad Q8400 vs 3 MB Intel® Smart Cache on the Pentium G2140.

Feature	Core 2 Quad Q8400	Pentium G2140
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	0.67 GHz	—
Base Clock	2.66 GHz	3.3 GHz+24%
L3 Cache	0 kB	3 MB Intel® Smart Cache
L2 Cache	4 MB (total)	—
Process	45 nm	22 nm-51%
Architecture	Yorkfield (2007−2009)	—
PassMark	2,076	2,092
Cinebench R23 Multi	852	—
Geekbench 6 Single	369	550+49%
Geekbench 6 Multi	1,155+26%	920

🧠

Memory & Platform

The Core 2 Quad Q8400 uses the LGA775 socket (PCIe 1.1), while the Pentium G2140 uses LGA1155 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3 1333 MHz on the Core 2 Quad Q8400 versus DDR3-1600 on the Pentium G2140 — the Pentium G2140 supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium G2140 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 G2140) — the Pentium G2140 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel P45,Intel G41,Intel Q45,Intel X48,Intel G31 (Core 2 Quad Q8400) and H61,B75 (Pentium G2140).

Feature	Core 2 Quad Q8400	Pentium G2140
Socket	LGA775	LGA1155
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR3 1333 MHz	DDR3-1600+20%
Max RAM Capacity	16 GB	32 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	0	16

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: true (Core 2 Quad Q8400) vs VT-x (Pentium G2140). The Pentium G2140 includes integrated graphics (Intel HD Graphics), while the Core 2 Quad Q8400 requires a dedicated GPU. Primary use case: Core 2 Quad Q8400 targets Desktop, Pentium G2140 targets Legacy Desktop.

Feature	Core 2 Quad Q8400	Pentium G2140
Integrated GPU	No	Yes
IGPU Model	—	Intel HD Graphics
Unlocked	No	No
AVX-512	No	No
Virtualization	true	VT-x
Target Use	Desktop	Legacy Desktop

💰

Value Analysis

At launch, the Core 2 Quad Q8400 was priced at $183, while the Pentium G2140 came in at $100. On launch pricing ($183 vs $100), Pentium G2140 was $83 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Quad Q8400 delivers 11.3 pts/$ vs 20.9 pts/$ for the Pentium G2140 — making the Pentium G2140 the 59.4% better value option.

Feature	Core 2 Quad Q8400	Pentium G2140
MSRP	$183	$100-45%
Performance per Dollar	11.3	20.9+85%
Release Date	2009	2013

Search Core 2 Quad Q8400 on Amazon

Search Pentium G2140 on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.