Core i5-8600T vs Core i5-8400
Core i5-8600T
Core i5-8400
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 i5-8600T
Performance Per Dollar Core i5-8400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-8600T | Core i5-8400 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($213) | ✅ More affordable ($95) |
| Longevity | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) | ✨ Modern (Coffee Lake-S (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Core i5-8600T | Core i5-8400 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+125%) |
| Upfront Cost | ⚠️ Higher cost ($213) | ✅ More affordable ($95) |
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 i5-8600T and Core i5-8400
Core i5-8600T
The Core i5-8600T is manufactured by Intel. It was released in 2 April 2018 (7 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 6 cores and 6 threads. Base frequency is 2.3 GHz, with boost up to 3.7 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: 9,201 points. Launch price was $213.
Core i5-8400
The Core i5-8400 is manufactured by Intel. It was released in 5 October 2017 (8 years ago). It is based on the Coffee Lake-S (2017−2018) architecture. It features 6 cores and 6 threads. Base frequency is 2.8 GHz, with boost up to 4 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 9,229 points. Launch price was $182.
Processing Power
Both the Core i5-8600T and Core i5-8400 share an identical 6-core/6-thread configuration. Boost clocks reach 3.7 GHz on the Core i5-8600T versus 4 GHz on the Core i5-8400 — a 7.8% clock advantage for the Core i5-8400 (base: 2.3 GHz vs 2.8 GHz). The Core i5-8600T uses the Coffee Lake (2017−2019) architecture (14 nm), while the Core i5-8400 uses Coffee Lake-S (2017−2018) (14 nm). In PassMark, the Core i5-8600T scores 9,201 against the Core i5-8400's 9,229 — a 0.3% lead for the Core i5-8400. Both processors carry 9 MB (total) of L3 cache.
| Feature | Core i5-8600T | Core i5-8400 |
|---|---|---|
| Cores / Threads | 6 / 6 | 6 / 6 |
| Boost Clock | 3.7 GHz | 4 GHz+8% |
| Base Clock | 2.3 GHz | 2.8 GHz+22% |
| L3 Cache | 9 MB (total) | 9 MB (total) |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Coffee Lake (2017−2019) | Coffee Lake-S (2017−2018) |
| PassMark | 9,201 | 9,229 |
| Cinebench R23 Multi | 4,633 | — |
| Geekbench 6 Single | 1,224 | — |
| Geekbench 6 Multi | 4,470 | — |
Memory & Platform
Both processors use the LGA1151 socket with PCIe 3.0. Both support up to DDR4-2666 memory speed. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H310,B360,H370,Q370,Z370,Z390 (Core i5-8600T) and Intel 300 series (Core i5-8400).
| Feature | Core i5-8600T | Core i5-8400 |
|---|---|---|
| Socket | LGA1151 | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | DDR4-2666 |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Virtualization support: Yes (Core i5-8600T) vs VT-x, VT-d (Core i5-8400). Both include integrated graphics — UHD Graphics 630 (Core i5-8600T) and UHD Graphics 630 (Core i5-8400) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-8400 targets Desktop.
| Feature | Core i5-8600T | Core i5-8400 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | UHD Graphics 630 | UHD Graphics 630 |
| Unlocked | — | No |
| AVX-512 | No | No |
| Virtualization | Yes | VT-x, VT-d |
| Target Use | — | Desktop |
Value Analysis
The Core i5-8600T launched at $213 MSRP, while the Core i5-8400 debuted at $182. At current prices ($213 vs $95), the Core i5-8400 is $118 cheaper. In terms of value (PassMark points per dollar), the Core i5-8600T delivers 43.2 pts/$ vs 97.1 pts/$ for the Core i5-8400 — making the Core i5-8400 the 76.9% better value option.
| Feature | Core i5-8600T | Core i5-8400 |
|---|---|---|
| MSRP | $213 | $182-15% |
| Avg Price (30d) | $213 | $95-55% |
| Performance per Dollar | 43.2 | 97.1+125% |
| Release Date | 2018 | 2017 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Core i5-8600T and Core i5-8400
