Core 2 Duo P8400
Ryzen 7 7800X3D
Core 2 Duo P8400 vs Ryzen 7 7800X3D Performance Spectrum
About PassMark
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 Ryzen 7 7800X3D 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.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
Core 2 Duo P8400 vs Ryzen 7 7800X3D: 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
2008Why buy it
- ✅Costs $240 less on MSRP ($209 MSRP vs $449 MSRP).
- ✅Draws 3W instead of 120W, a 117W reduction.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 37 shared CPU benchmark tests.
- ❌Lower PassMark (2,497 vs 34,293).
- ❌Lower PassMark per dollar, at 11.9 vs 76.4 PassMark/$ ($209 MSRP vs $449 MSRP).
- ❌Older platform position on PGA478, while Ryzen 7 7800X3D moves to AM5 and DDR5.
- ❌No integrated graphics, while Ryzen 7 7800X3D can still boot and troubleshoot without a discrete GPU.
Ryzen 7 7800X3D
2023Why buy it
- ✅Better for gaming: +414.0% higher average FPS across 37 shared CPU benchmark tests.
- ✅Delivers 539.3% more PassMark for each dollar spent, at 76.4 vs 11.9 PassMark/$ ($449 MSRP vs $209 MSRP).
- ✅Newer platform on AM5 with DDR5 support instead of PGA478 and older memory support.
- ✅100+% more PCIe lanes (28 vs 0) for storage and expansion-heavy builds.
- ✅Integrated graphics onboard with AMD Radeon Graphics (2-core), while Core 2 Duo P8400 needs a discrete GPU.
Trade-offs
- ❌114.8% HIGHER MSRP$449 MSRPvs$209 MSRP
- ❌3900% higher power demand at 120W vs 3W.
Quick Answers
So, is Ryzen 7 7800X3D better than Core 2 Duo P8400?
Which one is better for gaming?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
Core 2 Duo P8400 vs Ryzen 7 7800X3D 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.
Ryzen 7 7800X3D
The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.
Processing Power
The Core 2 Duo P8400 packs 2 cores / 2 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 6 more cores. Boost clocks reach 2.26 GHz on the Core 2 Duo P8400 versus 5 GHz on the Ryzen 7 7800X3D — a 75.5% clock advantage for the Ryzen 7 7800X3D (base: 2.26 GHz vs 4.4 GHz). The Core 2 Duo P8400 uses the Penryn (2008−2011) architecture (45 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core 2 Duo P8400 scores 2,497 against the Ryzen 7 7800X3D's 34,293 — a 172.9% lead for the Ryzen 7 7800X3D. L3 cache: 3 MB L2 Cache on the Core 2 Duo P8400 vs 96 MB (total) on the Ryzen 7 7800X3D.
| Feature | Core 2 Duo P8400 | Ryzen 7 7800X3D |
|---|---|---|
| Cores / Threads | 2 / 2 | 8 / 16+300% |
| Boost Clock | 2.26 GHz | 5 GHz+121% |
| Base Clock | 2.26 GHz | 4.4 GHz+95% |
| L3 Cache | 3 MB L2 Cache | 96 MB (total)+3100% |
| L2 Cache | 3 MB+200% | 1 MB (per core) |
| Process | 45 nm | 5 nm-89% |
| Architecture | Penryn (2008−2011) | Raphael (Zen4) (2022−2023) |
| PassMark | 2,497 | 34,293+1273% |
| Cinebench R23 Multi | — | 18,500 |
| Geekbench 6 Single | — | 2,700 |
| Geekbench 6 Multi | — | 15,000 |
Memory & Platform
The Core 2 Duo P8400 uses the PGA478 socket (PCIe 1.1), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1066 on the Core 2 Duo P8400 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 387.8% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 8 GB — 1500% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Duo P8400) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: GM45,GS45,PM45 (Core 2 Duo P8400) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).
| Feature | Core 2 Duo P8400 | Ryzen 7 7800X3D |
|---|---|---|
| Socket | PGA478 | AM5 |
| PCIe Generation | PCIe 1.1 | PCIe 5.0+355% |
| Max RAM Speed | 1066 | DDR5-5200+388% |
| Max RAM Capacity | 8 GB | 128 GB+1500% |
| RAM Channels | 2 | 2 |
| ECC Support | No | Yes |
| PCIe Lanes | 0 | 28 |
Advanced Features
Only the Ryzen 7 7800X3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core 2 Duo P8400) vs AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Core 2 Duo P8400 requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Core 2 Duo P8400 rivals Turion II Ultra M600; Ryzen 7 7800X3D rivals Intel Core i7-14700K.
| Feature | Core 2 Duo P8400 | Ryzen 7 7800X3D |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | AMD Radeon Graphics (2-core) |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | true | AMD-V |
| Target Use | — | Gaming |
Value Analysis
At launch, the Core 2 Duo P8400 was priced at $209, while the Ryzen 7 7800X3D came in at $449. On launch pricing ($209 vs $449), Core 2 Duo P8400 was $240 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo P8400 delivers 11.9 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 145.9% better value option.
| Feature | Core 2 Duo P8400 | Ryzen 7 7800X3D |
|---|---|---|
| MSRP | $209-53% | $449 |
| Performance per Dollar | 11.9 | 76.4+542% |
| Release Date | 2008 | 2023 |
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