Core 2 Duo SL9600 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.

Core 2 Duo SL9600 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.

Core 2 Duo SL9600 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.

Core 2 Duo SL9600

2009

Why buy it

✅Costs $4,175 less on MSRP ($316 MSRP vs $4,491 MSRP).
✅Delivers 1331.7% more PassMark for each dollar spent, at 6.5 vs 0.5 PassMark/$ ($316 MSRP vs $4,491 MSRP).
✅Draws 6W instead of 120W, a 114W reduction.

Trade-offs

❌Smaller total L3 cache (6 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon X5355, which brings 4 cores / 4 threads.

Xeon X5355

2006

Why buy it

✅+33.3% larger total L3 cache (8 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.

Trade-offs

❌Lower PassMark (2,039 vs 2,054).
❌Lower PassMark per dollar, at 0.5 vs 6.5 PassMark/$ ($4,491 MSRP vs $316 MSRP).
❌1900% higher power demand at 120W vs 6W.

Quick Answers

So, is Core 2 Duo SL9600 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 Core 2 Duo SL9600 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core 2 Duo SL9600 is the better pick. According to our tests, it delivers 1.3% 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, Core 2 Duo SL9600 is the stronger fit. You are getting 0.7% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo SL9600 is the better buy right now. Core 2 Duo SL9600 comes in $4,175 cheaper on MSRP at $316 MSRP versus $4,491 MSRP, and it still gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data. It is also 1331.7% better value on MSRP (6.5 vs 0.5 PassMark/$), 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 SL9600 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2006) and more multi-core headroom with 2 cores / 2 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Duo SL9600 vs Xeon X5355 Technical Specifications

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

Core 2 Duo SL9600

The Core 2 Duo SL9600 is manufactured by Intel. It was released in 1 March 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.13 GHz, with boost up to 2.13 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 17 Watt. Passmark benchmark score: 2,054 points. Launch price was $316.

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 Core 2 Duo SL9600 packs 2 cores / 2 threads, while the Xeon X5355 offers 4 cores / 4 threads — the Xeon X5355 has 2 more cores. Boost clocks reach 2.13 GHz on the Core 2 Duo SL9600 versus 0.67 GHz on the Xeon X5355 — a 104.3% clock advantage for the Core 2 Duo SL9600 (base: 2.13 GHz vs 2.66 GHz). The Core 2 Duo SL9600 uses the Penryn (2008−2011) architecture (45 nm), while the Xeon X5355 uses Clovertown (2006−2007) (65 nm). In PassMark, the Core 2 Duo SL9600 scores 2,054 against the Xeon X5355's 2,039 — a 0.7% lead for the Core 2 Duo SL9600. L3 cache: 6 MB L2 Cache on the Core 2 Duo SL9600 vs 8 MB L2 Cache on the Xeon X5355.

Feature	Core 2 Duo SL9600	Xeon X5355
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	2.13 GHz+218%	0.67 GHz
Base Clock	2.13 GHz	2.66 GHz+25%
L3 Cache	6 MB L2 Cache	8 MB L2 Cache+33%
L2 Cache	6 MB+50%	4 MB (total)
Process	45 nm-31%	65 nm
Architecture	Penryn (2008−2011)	Clovertown (2006−2007)
PassMark	2,054	2,039

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Memory & Platform

The Core 2 Duo SL9600 uses the BGA956 socket (PCIe 1.1), while the Xeon X5355 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo SL9600	Xeon X5355
Socket	BGA956	LGA771
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR3-1066	—
Max RAM Capacity	8 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—

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Advanced Features

Virtualization: VT-x, VT-d (Core 2 Duo SL9600) / not specified (Xeon X5355). Primary use case: Core 2 Duo SL9600 targets Mobile.

Feature	Core 2 Duo SL9600	Xeon X5355
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	Mobile	—

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Value Analysis

At launch, the Core 2 Duo SL9600 was priced at $316, while the Xeon X5355 came in at $4491. On launch pricing ($316 vs $4491), Core 2 Duo SL9600 was $4175 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo SL9600 delivers 6.5 pts/$ vs 0.5 pts/$ for the Xeon X5355 — making the Core 2 Duo SL9600 the 173.9% better value option.

Feature	Core 2 Duo SL9600	Xeon X5355
MSRP	$316-93%	$4491
Performance per Dollar	6.5+1200%	0.5
Release Date	2009	2006

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