EPYC 8434P vs EPYC 7742
EPYC 8434P
EPYC 7742
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 EPYC 8434P
Performance Per Dollar EPYC 7742
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 8434P | EPYC 7742 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($3,137) | ✅ More affordable ($800) |
| Longevity | ✨ Modern (Siena (2023−2024) / 5 nm) | ✨ Modern (Zen 2 (2017−2020) / 7 nm, 14 nm) |
💎 Value Proposition
| Insight | EPYC 8434P | EPYC 7742 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+310%) |
| Upfront Cost | ⚠️ Higher cost ($3,137) | ✅ More affordable ($800) |
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 EPYC 8434P and EPYC 7742
EPYC 8434P
The EPYC 8434P is manufactured by AMD. It was released in 18 September 2023 (2 years ago). It is based on the Siena (2023−2024) architecture. It features 48 cores and 96 threads. Base frequency is 2.5 GHz, with boost up to 3.1 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: SP6. Thermal design power (TDP): 200 Watt. Memory support: DDR5. Passmark benchmark score: 66,490 points. Launch price was $2,700.
EPYC 7742
The EPYC 7742 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 64 cores and 128 threads. Base frequency is 2.25 GHz, with boost up to 3.4 GHz. L3 cache: 256 MB (total). L2 cache: 512K (per core). Built on 7 nm, 14 nm process technology. Socket: TR4. Thermal design power (TDP): 225 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 69,448 points. Launch price was $6,950.
Processing Power
The EPYC 8434P packs 48 cores / 96 threads, while the EPYC 7742 offers 64 cores / 128 threads — the EPYC 7742 has 16 more cores. Boost clocks reach 3.1 GHz on the EPYC 8434P versus 3.4 GHz on the EPYC 7742 — a 9.2% clock advantage for the EPYC 7742 (base: 2.5 GHz vs 2.25 GHz). The EPYC 8434P uses the Siena (2023−2024) architecture (5 nm), while the EPYC 7742 uses Zen 2 (2017−2020) (7 nm, 14 nm). In PassMark, the EPYC 8434P scores 66,490 against the EPYC 7742's 69,448 — a 4.4% lead for the EPYC 7742. L3 cache: 128 MB (total) on the EPYC 8434P vs 256 MB (total) on the EPYC 7742.
| Feature | EPYC 8434P | EPYC 7742 |
|---|---|---|
| Cores / Threads | 48 / 96 | 64 / 128+33% |
| Boost Clock | 3.1 GHz | 3.4 GHz+10% |
| Base Clock | 2.5 GHz+11% | 2.25 GHz |
| L3 Cache | 128 MB (total) | 256 MB (total)+100% |
| L2 Cache | 1 MB (per core)+100% | 512K (per core) |
| Process | 5 nm-29% | 7 nm, 14 nm |
| Architecture | Siena (2023−2024) | Zen 2 (2017−2020) |
| PassMark | 66,490 | 69,448+4% |
Memory & Platform
The EPYC 8434P uses the SP6 socket (PCIe 4.0), while the EPYC 7742 uses TR4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the EPYC 8434P versus 3200 on the EPYC 7742 — the EPYC 8434P supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7742 supports up to 4096 of RAM compared to 1152 — 112.2% more capacity for professional workloads. Memory channels: 6 (EPYC 8434P) vs 8 (EPYC 7742). PCIe lanes: 96 (EPYC 8434P) vs 128 (EPYC 7742) — the EPYC 7742 offers 32 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP6 (EPYC 8434P) and SP3 (EPYC 7742).
| Feature | EPYC 8434P | EPYC 7742 |
|---|---|---|
| Socket | SP6 | TR4 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | 4800+50% | 3200 |
| Max RAM Capacity | 1152 | 4096+256% |
| RAM Channels | 6 | 8+33% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 96 | 128+33% |
Advanced Features
Neither processor supports overclocking. Only the EPYC 8434P supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. Direct competitor: EPYC 8434P rivals Xeon Platinum 8452Y; EPYC 7742 rivals Xeon Platinum 8280.
| Feature | EPYC 8434P | EPYC 7742 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
Value Analysis
The EPYC 8434P launched at $1517 MSRP, while the EPYC 7742 debuted at $6950. At current prices ($3137 vs $800), the EPYC 7742 is $2337 cheaper. In terms of value (PassMark points per dollar), the EPYC 8434P delivers 21.2 pts/$ vs 86.8 pts/$ for the EPYC 7742 — making the EPYC 7742 the 121.5% better value option.
| Feature | EPYC 8434P | EPYC 7742 |
|---|---|---|
| MSRP | $1517-78% | $6950 |
| Avg Price (30d) | $3137 | $800-74% |
| Performance per Dollar | 21.2 | 86.8+309% |
| Release Date | 2023 | 2019 |
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