Pentium T4400 vs Phenom X3 8400

Pentium T4400 vs Phenom X3 8400 Performance Spectrum

Pentium T4400

1,175

+0.9%

1,164

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

About PassMark

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.

Pentium T4400 vs Phenom X3 8400 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.

Pentium T4400 vs Phenom X3 8400: Pros, Cons & Final Verdict

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

Pentium T4400

2009

Why buy it

✅Draws 35W instead of 95W, a 60W reduction.

Trade-offs

❌Smaller total L3 cache (1 MB vs 2 MB).
❌Launch MSRP is still $107 MSRP, while Phenom X3 8400 mostly shows up through inconsistent older-market listings.

Phenom X3 8400

2008

Why buy it

✅+100% larger total L3 cache (2 MB vs 1 MB).

Trade-offs

❌Lower PassMark (1,164 vs 1,175).
❌171.4% higher power demand at 95W vs 35W.

Quick Answers

So, is Pentium T4400 better than Phenom X3 8400?

Yes. Pentium T4400 is the better all-around CPU here. It gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data, 0.9% 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, Pentium T4400 is the better pick. According to our tests, it delivers 2.1% 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, Pentium T4400 is the stronger fit. You are getting 0.9% better PassMark.

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

Pentium T4400 is the better buy right now. Pentium T4400 comes in at an unclear MSRP at $107 MSRP versus unclear MSRP, and it still gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (11.0 vs 0.0 PassMark/$), 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 T4400 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008). That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Pentium T4400 vs Phenom X3 8400 Technical Specifications

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

Pentium T4400

The Pentium T4400 is manufactured by Intel. It was released in 2007-01-01. Base frequency: 2.2 GHz. L3 cache: 1 MB L2 Cache. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,175 points. Launch price was $69.

Phenom X3 8400

The Phenom X3 8400 is manufactured by AMD. It was released in 2009-01-01. It is based on the Toliman (2008) architecture. It features 3 cores and 3 threads. Max frequency: 2.1 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,164 points. Launch price was $149.

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Processing Power

The Phenom X3 8400 is built on the Toliman (2008) architecture. In PassMark, the Pentium T4400 scores 1,175 against the Phenom X3 8400's 1,164 — a 0.9% lead for the Pentium T4400. L3 cache: 1 MB L2 Cache on the Pentium T4400 vs 2 MB (total) on the Phenom X3 8400.

Feature	Pentium T4400	Phenom X3 8400
Cores / Threads	—	3 / 3
Boost Clock	—	2.1 GHz
Base Clock	2.2 GHz	—
L3 Cache	1 MB L2 Cache	2 MB (total)+100%
L2 Cache	—	512 kB (per core)
Process	45 nm-31%	65 nm
Architecture	—	Toliman (2008)
PassMark	1,175	1,164
Geekbench 6 Single	249	—

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Memory & Platform

The Pentium T4400 uses the PGA478 socket (PCIe 2.0), while the Phenom X3 8400 uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Pentium T4400	Phenom X3 8400
Socket	PGA478	AM2+
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-800	—
Max RAM Capacity	8 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—

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Advanced Features

Virtualization: None (Pentium T4400) / not specified (Phenom X3 8400). Primary use case: Pentium T4400 targets Budget. Direct competitor: Pentium T4400 rivals AMD A4-3300M.