Core 2 Quad Q8400 vs Xeon X3320

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 Xeon X3320 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 Xeon X3320: 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

✅Includes a boxed cooler (true), unlike Xeon X3320.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X3320 across 50 shared CPU benchmark tests.
❌Lower PassMark (2,076 vs 2,082).
❌Launch MSRP is still $183 MSRP, while Xeon X3320 mostly shows up through inconsistent older-market listings.

Xeon X3320

2008

Why buy it

✅Better for gaming: +3.1% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌No boxed cooler included, unlike Core 2 Quad Q8400.

Quick Answers

So, is Xeon X3320 better than Core 2 Quad Q8400?

Not really, because they are built for different jobs. Xeon X3320 makes more sense for workstation-style multi-core throughput, while Core 2 Quad Q8400 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon X3320 is the better pick. According to our tests, it delivers 3.1% 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, Xeon X3320 is the stronger fit. You are getting 0.3% better PassMark.

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

Xeon X3320 is still the much better call for a fresh build. Xeon X3320 comes in at an unclear MSRP at unclear MSRP versus $183 MSRP, and it still gives you a 3.1% average FPS lead across 50 shared CPU game tests in our data. Core 2 Quad Q8400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 100.0% better value on paper (11.3 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA775.

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

Core 2 Quad Q8400 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008). That makes it the safer long-term bet.

Core 2 Quad Q8400 vs Xeon X3320 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.

Xeon X3320

The Xeon X3320 is manufactured by Intel. It was released in 2015-01-01. Base frequency: 2.5 GHz. L3 cache: 6 MB L2 Cache. Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 2,082 points. Launch price was $800.

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Processing Power

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 Xeon X3320's 2,082 — a 0.3% lead for the Xeon X3320. L3 cache: 0 kB on the Core 2 Quad Q8400 vs 6 MB L2 Cache on the Xeon X3320.

Feature	Core 2 Quad Q8400	Xeon X3320
Cores / Threads	4 / 4	—
Boost Clock	0.67 GHz	—
Base Clock	2.66 GHz+6%	2.5 GHz
L3 Cache	0 kB	6 MB L2 Cache
L2 Cache	4 MB (total)	—
Process	45 nm	45 nm
Architecture	Yorkfield (2007−2009)	—
PassMark	2,076	2,082
Cinebench R23 Multi	852	—
Geekbench 6 Single	369	—
Geekbench 6 Multi	1,155	—

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Memory & Platform

Both processors use the LGA775 socket with PCIe 1.1.

Feature	Core 2 Quad Q8400	Xeon X3320
Socket	LGA775	LGA775
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR3 1333 MHz	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—