Core 2 Duo P8400 vs Core 2 Duo SP9300

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 P8400 vs Core 2 Duo SP9300 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 P8400 vs Core 2 Duo SP9300: 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 P8400

2008

Why buy it

✅Draws 3W instead of 6W, a 3W reduction.

Trade-offs

❌Lower PassMark (2,497 vs 2,517).
❌Smaller total L3 cache (3 MB vs 6 MB).
❌Launch MSRP is still $209 MSRP, while Core 2 Duo SP9300 mostly shows up through inconsistent older-market listings.

Core 2 Duo SP9300

2008

Why buy it

✅+0.8% higher PassMark.
✅+100% larger total L3 cache (6 MB vs 3 MB).

Trade-offs

❌100% higher power demand at 6W vs 3W.

Quick Answers

So, is Core 2 Duo SP9300 better than Core 2 Duo P8400?

Yes. Core 2 Duo SP9300 is the better all-around CPU here. It gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data, 0.8% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Core 2 Duo SP9300 is the stronger fit. You are getting 0.8% better PassMark, backed by 2 cores and 2 threads. It also has the larger cache pool with 100% larger total L3 cache (6 MB vs 3 MB).

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

Core 2 Duo SP9300 is still the much better call for a fresh build. Core 2 Duo SP9300 comes in at an unclear MSRP at unclear MSRP versus $209 MSRP, and it still gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data. Core 2 Duo P8400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2008 platform. Even with 100.0% better value on paper (11.9 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA478.

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

Core 2 Duo SP9300 makes more sense long term for 2026 and beyond. You are getting 100% larger total L3 cache (6 MB vs 3 MB) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Duo P8400 vs Core 2 Duo SP9300 Technical Specifications

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

Core 2 Duo P8400

The Core 2 Duo P8400 is manufactured by Intel. It was released in 15 July 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,497 points. Launch price was $209.

Core 2 Duo SP9300

The Core 2 Duo SP9300 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,517 points. Launch price was $284.

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Processing Power

Both the Core 2 Duo P8400 and Core 2 Duo SP9300 share an identical 2-core/2-thread configuration. Boost clocks reach 2.26 GHz on the Core 2 Duo P8400 versus 2.26 GHz on the Core 2 Duo SP9300 — identical boost frequencies (base: 2.26 GHz vs 2.26 GHz). Both are built on the Penryn (2008−2011) architecture using a 45 nm process. In PassMark, the Core 2 Duo P8400 scores 2,497 against the Core 2 Duo SP9300's 2,517 — a 0.8% lead for the Core 2 Duo SP9300. L3 cache: 3 MB L2 Cache on the Core 2 Duo P8400 vs 6 MB L2 Cache on the Core 2 Duo SP9300.

Feature	Core 2 Duo P8400	Core 2 Duo SP9300
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.26 GHz	2.26 GHz
Base Clock	2.26 GHz	2.26 GHz
L3 Cache	3 MB L2 Cache	6 MB L2 Cache+100%
L2 Cache	3 MB	6 MB+100%
Process	45 nm	45 nm
Architecture	Penryn (2008−2011)	Penryn (2008−2011)
PassMark	2,497	2,517

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Memory & Platform

The Core 2 Duo P8400 uses the PGA478 socket (PCIe 1.1), while the Core 2 Duo SP9300 uses BGA956 (PCIe 1.1) — making them incompatible on the same motherboard. Both support up to 1066 memory speed. Both support up to 8 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: GM45,GS45,PM45 (Core 2 Duo P8400) and GS45 (Core 2 Duo SP9300).

Feature	Core 2 Duo P8400	Core 2 Duo SP9300
Socket	PGA478	BGA956
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	1066	DDR3-1066
Max RAM Capacity	8 GB	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: true (Core 2 Duo P8400) vs VT-x (Core 2 Duo SP9300). Direct competitor: Core 2 Duo P8400 rivals Turion II Ultra M600.