CPU
GPU
Ryzen 9 7845HX
EPYC 7542
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 Ryzen 9 7845HX
Performance Per Dollar EPYC 7542
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7845HX | EPYC 7542 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($899) |
| Longevity | ✨ Modern (Dragon Range-HX (Zen 4) (2023−2024) / CCD = 5 nm, I/O = 6 nm) | ✨ Modern (Zen 2 (2017−2020) / 7 nm, 14 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7845HX | EPYC 7542 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($899) |
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 Ryzen 9 7845HX and EPYC 7542
Ryzen 9 7845HX
The Ryzen 9 7845HX is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 12 cores and 24 threads. Base frequency is 3 GHz, with boost up to 5.2 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on CCD = 5 nm, I/O = 6 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 44,940 points. Launch price was $499.
EPYC 7542
The EPYC 7542 is manufactured by AMD. It was released in 7 August 2019 (6 years ago). It is based on the Zen 2 (2017−2020) architecture. It features 32 cores and 64 threads. Base frequency is 2.9 GHz, with boost up to 3.4 GHz. L3 cache: 128 MB (total). L2 cache: 512K (per core). Built on 7 nm, 14 nm process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 45,359 points. Launch price was $3,400.
Processing Power
The Ryzen 9 7845HX packs 12 cores / 24 threads, while the EPYC 7542 offers 32 cores / 64 threads — the EPYC 7542 has 20 more cores. Boost clocks reach 5.2 GHz on the Ryzen 9 7845HX versus 3.4 GHz on the EPYC 7542 — a 41.9% clock advantage for the Ryzen 9 7845HX (base: 3 GHz vs 2.9 GHz). The Ryzen 9 7845HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (CCD = 5 nm, I/O = 6 nm), while the EPYC 7542 uses Zen 2 (2017−2020) (7 nm, 14 nm). In PassMark, the Ryzen 9 7845HX scores 44,940 against the EPYC 7542's 45,359 — a 0.9% lead for the EPYC 7542. L3 cache: 64 MB (total) on the Ryzen 9 7845HX vs 128 MB (total) on the EPYC 7542.
| Feature | Ryzen 9 7845HX | EPYC 7542 |
|---|---|---|
| Cores / Threads | 12 / 24 | 32 / 64+167% |
| Boost Clock | 5.2 GHz+53% | 3.4 GHz |
| Base Clock | 3 GHz+3% | 2.9 GHz |
| L3 Cache | 64 MB (total) | 128 MB (total)+100% |
| L2 Cache | 1 MB (per core)+100% | 512K (per core) |
| Process | CCD = 5 nm, I/O = 6 nm-29% | 7 nm, 14 nm |
| Architecture | Dragon Range-HX (Zen 4) (2023−2024) | Zen 2 (2017−2020) |
| PassMark | 44,940 | 45,359 |
| Cinebench R23 Multi | 26,654 | — |
| Geekbench 6 Single | 2,697 | — |
| Geekbench 6 Multi | 15,039 | — |
Memory & Platform
The Ryzen 9 7845HX uses the FL1 socket (PCIe 5.0), while the EPYC 7542 uses SP3 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 9 7845HX versus 3200 on the EPYC 7542 — the EPYC 7542 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7542 supports up to 4096 of RAM compared to 64 GB — 193.8% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 7845HX) vs 8 (EPYC 7542). PCIe lanes: 28 (Ryzen 9 7845HX) vs 128 (EPYC 7542) — the EPYC 7542 offers 100 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 7845HX) and SP3 (EPYC 7542).
| Feature | Ryzen 9 7845HX | EPYC 7542 |
|---|---|---|
| Socket | FL1 | SP3 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-5200 | 3200+63900% |
| Max RAM Capacity | 64 GB+1638300% | 4096 |
| RAM Channels | 2 | 8+300% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28 | 128+357% |
Advanced Features
Only the Ryzen 9 7845HX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (Ryzen 9 7845HX) vs VT-x, VT-d, AMD-V (EPYC 7542). The Ryzen 9 7845HX includes integrated graphics (Radeon 610M), while the EPYC 7542 requires a dedicated GPU. Primary use case: Ryzen 9 7845HX targets High-end Gaming / Content Creation. Direct competitor: Ryzen 9 7845HX rivals Core i9-13900HX; EPYC 7542 rivals Xeon Gold 6248R.
| Feature | Ryzen 9 7845HX | EPYC 7542 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon 610M | None |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | VT-x, VT-d, AMD-V |
| Target Use | High-end Gaming / Content Creation | — |
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