Core i5-9400T vs Ryzen 7 7800X3D
Core i5-9400T
Popular choices:
Ryzen 7 7800X3D
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-9400T
Performance Per Dollar Ryzen 7 7800X3D
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($60) | ⚠️ Higher cost ($384) |
| Longevity | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) |
💎 Value Proposition
| Insight | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+53%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($60) | ⚠️ Higher cost ($384) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Core i5-9400T and Ryzen 7 7800X3D
Core i5-9400T
The Core i5-9400T is manufactured by Intel. It was released in 1 September 2018 (7 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 6 cores and 6 threads. Base frequency is 1.8 GHz, with boost up to 3.4 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 8,180 points. Launch price was $182.
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 i5-9400T packs 6 cores / 6 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 2 more cores. Boost clocks reach 3.4 GHz on the Core i5-9400T versus 5 GHz on the Ryzen 7 7800X3D — a 38.1% clock advantage for the Ryzen 7 7800X3D (base: 1.8 GHz vs 4.4 GHz). The Core i5-9400T uses the Coffee Lake (2017−2019) architecture (14 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i5-9400T scores 8,180 against the Ryzen 7 7800X3D's 34,293 — a 123% lead for the Ryzen 7 7800X3D. L3 cache: 9 MB (total) on the Core i5-9400T vs 96 MB (total) on the Ryzen 7 7800X3D.
| Feature | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| Cores / Threads | 6 / 6 | 8 / 16+33% |
| Boost Clock | 3.4 GHz | 5 GHz+47% |
| Base Clock | 1.8 GHz | 4.4 GHz+144% |
| L3 Cache | 9 MB (total) | 96 MB (total)+967% |
| L2 Cache | 256K (per core) | 1 MB (per core)+300% |
| Process | 14 nm | 5 nm-64% |
| Architecture | Coffee Lake (2017−2019) | Raphael (Zen4) (2022−2023) |
| PassMark | 8,180 | 34,293+319% |
| Cinebench R23 Multi | — | 18,500 |
| Geekbench 6 Single | — | 2,700 |
| Geekbench 6 Multi | — | 15,000 |
Memory & Platform
The Core i5-9400T uses the LGA1151 socket (PCIe 3.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-9400T versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i5-9400T) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 12 more lanes for additional GPUs or NVMe drives.
| Feature | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| Socket | LGA1151 | AM5 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | DDR4-2666 | DDR5-5200+25% |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 28+75% |
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: VT-x, VT-d (Core i5-9400T) vs AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — UHD Graphics 630 (Core i5-9400T) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-9400T targets Desktop, Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.
| Feature | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | UHD Graphics 630 | AMD Radeon Graphics (2-core) |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | VT-x, VT-d | AMD-V |
| Target Use | Desktop | Gaming |
Value Analysis
The Core i5-9400T launched at $182 MSRP, while the Ryzen 7 7800X3D debuted at $449. At current prices ($60 vs $384), the Core i5-9400T is $324 cheaper. In terms of value (PassMark points per dollar), the Core i5-9400T delivers 136.3 pts/$ vs 89.3 pts/$ for the Ryzen 7 7800X3D — making the Core i5-9400T the 41.7% better value option.
| Feature | Core i5-9400T | Ryzen 7 7800X3D |
|---|---|---|
| MSRP | $182-59% | $449 |
| Avg Price (30d) | $60-84% | $384 |
| Performance per Dollar | 136.3+53% | 89.3 |
| Release Date | 2019 | 2023 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Core i5-9400T and Ryzen 7 7800X3D
