Pentium 1403 vs Phenom II X3 B77

Pentium 1403 vs Phenom II X3 B77 Performance Spectrum

Pentium 1403

2 / 2

1,851

+0.4%

1,844

0.0%

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 1403 vs Phenom II X3 B77 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 1403 vs Phenom II X3 B77: Pros, Cons & Final Verdict

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

Pentium 1403

2012

Why buy it

✅Draws 80W instead of 95W, a 15W reduction.

Trade-offs

❌Smaller total L3 cache (5 MB vs 6 MB).

Phenom II X3 B77

2010

Why buy it

✅+20% larger total L3 cache (6 MB vs 5 MB).

Trade-offs

❌Lower PassMark (1,844 vs 1,851).
❌Launch MSRP is still $281 MSRP, while Pentium 1403 mostly shows up through inconsistent older-market listings.
❌18.8% higher power demand at 95W vs 80W.

Quick Answers

So, is Pentium 1403 better than Phenom II X3 B77?

Yes. Pentium 1403 is the better all-around CPU here. It gives you a 0.8% average FPS lead across 49 shared CPU game tests in our data, 0.4% 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 1403 is the better pick. According to our tests, it delivers 0.8% more average FPS across 49 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Pentium 1403 is the stronger fit. You are getting 0.4% better PassMark, backed by 2 cores and 2 threads.

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

Pentium 1403 is still the much better call for a fresh build. Pentium 1403 comes in at an unclear MSRP at unclear MSRP versus $281 MSRP, and it still gives you a 0.8% average FPS lead across 49 shared CPU game tests in our data. Phenom II X3 B77 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (6.6 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM3.

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

Pentium 1403 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2010) and more multi-core headroom with 2 cores / 2 threads instead of 3/3. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Pentium 1403 vs Phenom II X3 B77 Technical Specifications

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

Pentium 1403

The Pentium 1403 is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 2 threads. Base frequency: 2.6 GHz. L3 cache: 5 MB. Built on 32 nm process technology. Thermal design power (TDP): 80 Watt. Memory support: DDR3-800, DDR3-1066. Passmark benchmark score: 1,851 points. Launch price was $69.

Phenom II X3 B77

The Phenom II X3 B77 is manufactured by AMD. It was released in 2009-01-01. It is based on the Heka (2009−2010) architecture. It features 3 cores and 3 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,844 points. Launch price was $149.

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Processing Power

The Pentium 1403 packs 2 cores / 2 threads, while the Phenom II X3 B77 offers 3 cores / 3 threads — the Phenom II X3 B77 has 1 more core. The Phenom II X3 B77 is built on the Heka (2009−2010) architecture. In PassMark, the Pentium 1403 scores 1,851 against the Phenom II X3 B77's 1,844 — a 0.4% lead for the Pentium 1403. L3 cache: 5 MB on the Pentium 1403 vs 6 MB (total) on the Phenom II X3 B77.

Feature	Pentium 1403	Phenom II X3 B77
Cores / Threads	2 / 2	3 / 3+50%
Boost Clock	—	3.2 GHz
Base Clock	2.6 GHz	3.2 GHz+23%
L3 Cache	5 MB	6 MB (total)+20%
L2 Cache	—	512 kB (per core)
Process	32 nm-29%	45 nm
Architecture	—	Heka (2009−2010)
PassMark	1,851	1,844