Core i9-12900KS vs Ryzen 9 5900XT
Core i9-12900KS
Ryzen 9 5900XT
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 i9-12900KS
Performance Per Dollar Ryzen 9 5900XT
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($385) | ✅ More affordable ($311) |
| Longevity | ✨ Modern (Alder Lake-S (2022) / Intel 7 nm) | ✨ Modern (Vermeer (2020−2025) / 7 nm) |
💎 Value Proposition
| Insight | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+25%) |
| Upfront Cost | ⚠️ Higher cost ($385) | ✅ More affordable ($311) |
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 i9-12900KS and Ryzen 9 5900XT
Core i9-12900KS
The Core i9-12900KS is manufactured by Intel. It was released in 5 April 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 16 cores and 24 threads. Base frequency is 3.4 GHz, with boost up to 5.3 GHz. L3 cache: 30 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 150 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 43,528 points. Launch price was $499.
Ryzen 9 5900XT
The Ryzen 9 5900XT is manufactured by AMD. It was released in 31 July 2024 (1 year ago). It is based on the Vermeer (2020−2025) architecture. It features 16 cores and 32 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 44,105 points. Launch price was $349.
Processing Power
The Core i9-12900KS packs 16 cores / 24 threads, matching the Ryzen 9 5900XT's 16 cores. Boost clocks reach 5.3 GHz on the Core i9-12900KS versus 4.8 GHz on the Ryzen 9 5900XT — a 9.9% clock advantage for the Core i9-12900KS (base: 3.4 GHz vs 3.3 GHz). The Core i9-12900KS uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Ryzen 9 5900XT uses Vermeer (2020−2025) (7 nm). In PassMark, the Core i9-12900KS scores 43,528 against the Ryzen 9 5900XT's 44,105 — a 1.3% lead for the Ryzen 9 5900XT. Cinebench R23 multi-core: 27,796 vs 22,000 (23.3% advantage for the Core i9-12900KS). Geekbench 6 single-core — the metric most relevant to gaming — records 2,082 vs 2,320, a 10.8% lead for the Ryzen 9 5900XT that directly translates to higher frame rates. L3 cache: 30 MB (total) on the Core i9-12900KS vs 64 MB on the Ryzen 9 5900XT.
| Feature | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| Cores / Threads | 16 / 24 | 16 / 32 |
| Boost Clock | 5.3 GHz+10% | 4.8 GHz |
| Base Clock | 3.4 GHz+3% | 3.3 GHz |
| L3 Cache | 30 MB (total) | 64 MB+113% |
| L2 Cache | 1.25 MB (per core)+150% | 512 kB (per core) |
| Process | Intel 7 nm | 7 nm |
| Architecture | Alder Lake-S (2022) | Vermeer (2020−2025) |
| PassMark | 43,528 | 44,105+1% |
| Cinebench R23 Multi | 27,796+26% | 22,000 |
| Geekbench 6 Single | 2,082 | 2,320+11% |
| Geekbench 6 Multi | — | 14,000 |
Memory & Platform
The Core i9-12900KS uses the LGA1700 socket (PCIe 5.0), while the Ryzen 9 5900XT uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Core i9-12900KS versus DDR4-3200 on the Ryzen 9 5900XT — the Core i9-12900KS 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: 20 (Core i9-12900KS) vs 24 (Ryzen 9 5900XT) — the Ryzen 9 5900XT offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA1700 (Core i9-12900KS) and X570,B550,A520,X470,B450 (Ryzen 9 5900XT).
| Feature | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| Socket | LGA1700 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-4800+25% | DDR4-3200 |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 20 | 24+20% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Core i9-12900KS supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i9-12900KS) vs AMD-V (Ryzen 9 5900XT). The Core i9-12900KS includes integrated graphics (UHD 770), while the Ryzen 9 5900XT requires a dedicated GPU. Primary use case: Ryzen 9 5900XT targets High End Desktop.
| Feature | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | UHD 770 | — |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | AMD-V |
| Target Use | — | High End Desktop |
Value Analysis
The Core i9-12900KS launched at $739 MSRP, while the Ryzen 9 5900XT debuted at $349. At current prices ($385 vs $311), the Ryzen 9 5900XT is $74 cheaper. In terms of value (PassMark points per dollar), the Core i9-12900KS delivers 113.1 pts/$ vs 141.8 pts/$ for the Ryzen 9 5900XT — making the Ryzen 9 5900XT the 22.6% better value option.
| Feature | Core i9-12900KS | Ryzen 9 5900XT |
|---|---|---|
| MSRP | $739 | $349-53% |
| Avg Price (30d) | $385 | $311-19% |
| Performance per Dollar | 113.1 | 141.8+25% |
| Release Date | 2022 | 2024 |
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