Pentium 1403 vs Xeon E5345

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 Xeon E5345 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 Xeon E5345: 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

Trade-offs

❌Lower PassMark (1,851 vs 1,868).
❌Smaller total L3 cache (5 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon E5345, which brings 4 cores / 4 threads.

Xeon E5345

2006

Why buy it

✅+60% larger total L3 cache (8 MB vs 5 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Xeon E5345 better than Pentium 1403?

Not really, because they are built for different jobs. Xeon E5345 makes more sense for workstation-style multi-core throughput, while Pentium 1403 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 E5345 is the better pick. According to our tests, it delivers 2.2% 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 E5345 is the stronger fit. You are getting 0.9% better PassMark, backed by 4 cores and 4 threads. It also has the larger cache pool with 60% larger total L3 cache (8 MB vs 5 MB).

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

Xeon E5345 still makes the most sense overall. Xeon E5345 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 2.2% average FPS lead across 50 shared CPU game tests in our data.

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 2006). That makes it the safer long-term bet.

Pentium 1403 vs Xeon E5345 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.

Xeon E5345

The Xeon E5345 is manufactured by Intel. It was released in 14 November 2006 (19 years ago). It is based on the Clovertown (2006−2007) architecture. It features 4 cores and 4 threads. Base frequency is 2.33 GHz, with boost up to 0.33 GHz. L3 cache: 8 MB L2 Cache. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,868 points. Launch price was $851.

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Processing Power

The Pentium 1403 packs 2 cores / 2 threads, while the Xeon E5345 offers 4 cores / 4 threads — the Xeon E5345 has 2 more cores. The Xeon E5345 is built on the Clovertown (2006−2007) architecture. In PassMark, the Pentium 1403 scores 1,851 against the Xeon E5345's 1,868 — a 0.9% lead for the Xeon E5345. L3 cache: 5 MB on the Pentium 1403 vs 8 MB L2 Cache on the Xeon E5345.

Feature	Pentium 1403	Xeon E5345
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	—	0.33 GHz
Base Clock	2.6 GHz+12%	2.33 GHz
L3 Cache	5 MB	8 MB L2 Cache+60%
L2 Cache	—	4 MB (total)
Process	32 nm-51%	65 nm
Architecture	—	Clovertown (2006−2007)
PassMark	1,851	1,868