Pentium E6800 vs Phenom X3 8400

Pentium E6800 vs Phenom X3 8400 Performance Spectrum

Pentium E6800

2 / 2

1,155

0.0%

1,164

+0.8%

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 E6800 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 E6800 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 E6800

2010

Why buy it

✅Draws 65W instead of 95W, a 30W reduction.

Trade-offs

❌Lower PassMark (1,155 vs 1,164).
❌Launch MSRP is still $86 MSRP, while Phenom X3 8400 mostly shows up through inconsistent older-market listings.

Phenom X3 8400

2008

Why buy it

Trade-offs

❌46.2% higher power demand at 95W vs 65W.

Quick Answers

So, is Phenom X3 8400 better than Pentium E6800?

Yes. Phenom X3 8400 is the better all-around CPU here. It gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Phenom X3 8400 is the better pick. According to our tests, it delivers 2.0% 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, Phenom X3 8400 is the stronger fit. You are getting 0.8% better PassMark, backed by 3 cores and 3 threads.

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

Phenom X3 8400 is still the much better call for a fresh build. Phenom X3 8400 comes in at an unclear MSRP at unclear MSRP versus $86 MSRP, and it still gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data. Pentium E6800 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (13.4 vs 0.0 PassMark/$), 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?

Pentium E6800 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008). That makes it the safer long-term bet.

Pentium E6800 vs Phenom X3 8400 Technical Specifications

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

Pentium E6800

The Pentium E6800 is manufactured by Intel. It was released in 29 August 2010 (15 years ago). It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3.33 GHz, with boost up to 0.33 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,155 points. Launch price was $831.

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 Pentium E6800 packs 2 cores / 2 threads, while the Phenom X3 8400 offers 3 cores / 3 threads — the Phenom X3 8400 has 1 more core. Boost clocks reach 0.33 GHz on the Pentium E6800 versus 2.1 GHz on the Phenom X3 8400 — a 145.7% clock advantage for the Phenom X3 8400. The Pentium E6800 uses the Wolfdale (2008−2010) architecture (45 nm), while the Phenom X3 8400 uses Toliman (2008) (65 nm). In PassMark, the Pentium E6800 scores 1,155 against the Phenom X3 8400's 1,164 — a 0.8% lead for the Phenom X3 8400. L3 cache: 0 kB on the Pentium E6800 vs 2 MB (total) on the Phenom X3 8400.

Feature	Pentium E6800	Phenom X3 8400
Cores / Threads	2 / 2	3 / 3+50%
Boost Clock	0.33 GHz	2.1 GHz+536%
Base Clock	3.33 GHz	—
L3 Cache	0 kB	2 MB (total)
L2 Cache	2 MB (total)+300%	512 kB (per core)
Process	45 nm-31%	65 nm
Architecture	Wolfdale (2008−2010)	Toliman (2008)
PassMark	1,155	1,164

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Memory & Platform

The Pentium E6800 uses the LGA775 socket (PCIe 1.1), while the Phenom X3 8400 uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.