Core 2 Duo T5750 vs Xeon E5405

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.

Core 2 Duo T5750 vs Xeon E5405 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.

Core 2 Duo T5750 vs Xeon E5405: Pros, Cons & Final Verdict

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

Core 2 Duo T5750

2008

Why buy it

✅Draws 2W instead of 80W, a 78W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5405 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,738 vs 1,753).
❌Smaller total L3 cache (2 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon E5405, which brings 4 cores / 4 threads.

Xeon E5405

2007

Why buy it

✅Better for gaming: +4.8% higher average FPS across 50 shared CPU benchmark tests.
✅+500% larger total L3 cache (12 MB vs 2 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.

Trade-offs

❌Launch MSRP is still $209 MSRP, while Core 2 Duo T5750 mostly shows up through inconsistent older-market listings.
❌3900% higher power demand at 80W vs 2W.

Quick Answers

So, is Xeon E5405 better than Core 2 Duo T5750?

Not really, because they are built for different jobs. Xeon E5405 makes more sense for workstation-style multi-core throughput, while Core 2 Duo T5750 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 E5405 is the better pick. According to our tests, it delivers 4.8% 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 E5405 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 500% larger total L3 cache (12 MB vs 2 MB).

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

Xeon E5405 is the better buy right now. Xeon E5405 comes in at an unclear MSRP at $209 MSRP versus unclear MSRP, and it still gives you a 4.8% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (8.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core 2 Duo T5750 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2008 vs 2007). That makes it the safer long-term bet.

Core 2 Duo T5750 vs Xeon E5405 Technical Specifications

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

Core 2 Duo T5750

The Core 2 Duo T5750 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,738 points. Launch price was $249.

Xeon E5405

The Xeon E5405 is manufactured by Intel. It was released in 11 November 2007 (18 years ago). It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,753 points. Launch price was $209.

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Processing Power

The Core 2 Duo T5750 packs 2 cores / 2 threads, while the Xeon E5405 offers 4 cores / 4 threads — the Xeon E5405 has 2 more cores. Boost clocks reach 2 GHz on the Core 2 Duo T5750 versus 2 GHz on the Xeon E5405 — identical boost frequencies (base: 2 GHz vs 2 GHz). The Core 2 Duo T5750 uses the Merom (2006−2008) architecture (65 nm), while the Xeon E5405 uses Harpertown (2007−2008) (45 nm). In PassMark, the Core 2 Duo T5750 scores 1,738 against the Xeon E5405's 1,753 — a 0.9% lead for the Xeon E5405. L3 cache: 2 MB L2 Cache on the Core 2 Duo T5750 vs 12 MB L2 Cache on the Xeon E5405.

Feature	Core 2 Duo T5750	Xeon E5405
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	2 GHz	2 GHz
Base Clock	2 GHz	2 GHz
L3 Cache	2 MB L2 Cache	12 MB L2 Cache+500%
L2 Cache	2 MB	6 MB (total)+200%
Process	65 nm	45 nm-31%
Architecture	Merom (2006−2008)	Harpertown (2007−2008)
PassMark	1,738	1,753
Geekbench 6 Single	360	—
Geekbench 6 Multi	680	—

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Memory & Platform

The Core 2 Duo T5750 uses the PGA478 socket (PCIe 1.1), while the Xeon E5405 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR2-667 memory speed. The Xeon E5405 supports up to 32 GB of RAM compared to 4 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes.

Feature	Core 2 Duo T5750	Xeon E5405
Socket	PGA478	LGA771
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR2-667	DDR2-667
Max RAM Capacity	4 GB	32 GB+700%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	0	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: None (Core 2 Duo T5750) vs VT-x (Xeon E5405). Primary use case: Core 2 Duo T5750 targets Legacy Laptop, Xeon E5405 targets Server.