Pentium Dual Core T3400 vs Xeon X5355

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 Dual Core T3400 vs Xeon X5355 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 Dual Core T3400 vs Xeon X5355: Pros, Cons & Final Verdict

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

Pentium Dual Core T3400

2008

Why buy it

✅Draws 1W instead of 120W, a 119W reduction.

Trade-offs

❌Lower PassMark (2,026 vs 2,039).
❌Less compelling for workstation-style loads than Xeon X5355, which brings 4 cores / 4 threads.

Xeon X5355

2006

Why buy it

✅+0.6% higher PassMark.
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.

Trade-offs

❌Launch MSRP is still $4,491 MSRP, while Pentium Dual Core T3400 mostly shows up through inconsistent older-market listings.
❌11900% higher power demand at 120W vs 1W.

Quick Answers

So, is Pentium Dual Core T3400 better than Xeon X5355?

Not really, because they are built for different jobs. Xeon X5355 makes more sense for workstation-style multi-core throughput, while Pentium Dual Core T3400 is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Xeon X5355 is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 4 threads.

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

Pentium Dual Core T3400 is still the faster CPU overall, but Xeon X5355 is easier to justify if budget matters more than peak performance. Pentium Dual Core T3400 comes in at an unclear MSRP at unclear MSRP versus $4,491 MSRP, and it still gives you a 1.4% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Xeon X5355 is still stronger for heavier multi-core work with 0.6% better PassMark. Xeon X5355 is also 100.0% better value on MSRP (0.5 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Pentium Dual Core T3400 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2008 vs 2006). That makes it the safer long-term bet.

Pentium Dual Core T3400 vs Xeon X5355 Technical Specifications

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

Pentium Dual Core T3400

The Pentium Dual Core T3400 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Max frequency: 2.16 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 2,026 points. Launch price was $69.

Xeon X5355

The Xeon X5355 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 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 8 MB L2 Cache. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 120 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,039 points. Launch price was $1,172.

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Processing Power

The Pentium Dual Core T3400 packs 2 cores / 2 threads, while the Xeon X5355 offers 4 cores / 4 threads — the Xeon X5355 has 2 more cores. Boost clocks reach 2.16 GHz on the Pentium Dual Core T3400 versus 0.67 GHz on the Xeon X5355 — a 105.3% clock advantage for the Pentium Dual Core T3400. The Pentium Dual Core T3400 uses the NetBurst (2000−2006) architecture (65 nm), while the Xeon X5355 uses Clovertown (2006−2007) (65 nm). In PassMark, the Pentium Dual Core T3400 scores 2,026 against the Xeon X5355's 2,039 — a 0.6% lead for the Xeon X5355.

Feature	Pentium Dual Core T3400	Xeon X5355
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	2.16 GHz+222%	0.67 GHz
Base Clock	—	2.66 GHz
L3 Cache	—	8 MB L2 Cache
L2 Cache	1 MB	4 MB (total)+300%
Process	65 nm	65 nm
Architecture	NetBurst (2000−2006)	Clovertown (2006−2007)
PassMark	2,026	2,039

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Memory & Platform

The Pentium Dual Core T3400 uses the PGA478 socket (PCIe 1.1), while the Xeon X5355 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Pentium Dual Core T3400	Xeon X5355
Socket	PGA478	LGA771
PCIe Generation	PCIe 1.1	PCIe 2.0+82%

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Value Analysis

At launch, the Pentium Dual Core T3400 was priced at $0, while the Xeon X5355 came in at $4491. On launch pricing ($0 vs $4491), Pentium Dual Core T3400 was $4491 cheaper.

Feature	Pentium Dual Core T3400	Xeon X5355
MSRP	$0-100%	$4491
Performance per Dollar	—	0.5
Release Date	2008	2006

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