EPYC 9634 vs EPYC 9745
EPYC 9634
EPYC 9745
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 9634
Performance Per Dollar EPYC 9745
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9634 | EPYC 9745 |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($3,949) | ⚠️ Higher cost ($10,588) |
| Longevity | ✨ Modern (Genoa (2022−2023) / 5 nm, 6 nm) | ✨ Modern (Turin (2024) / 3 nm) |
💎 Value Proposition
| Insight | EPYC 9634 | EPYC 9745 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+121%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($3,949) | ⚠️ Higher cost ($10,588) |
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 9634 and EPYC 9745
EPYC 9634
The EPYC 9634 is manufactured by AMD. It was released in 10 November 2022 (3 years ago). It is based on the Genoa (2022−2023) architecture. It features 84 cores and 168 threads. Base frequency is 2.25 GHz, with boost up to 3.7 GHz. L3 cache: 384 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: SP5. Thermal design power (TDP): 290 Watt. Memory support: DDR5-4800. Passmark benchmark score: 107,944 points. Launch price was $10,304.
EPYC 9745
The EPYC 9745 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 128 cores and 256 threads. Base frequency is 2.4 GHz, with boost up to 3.7 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 3 nm process technology. Socket: SP5. Thermal design power (TDP): 400 Watt. Memory support: DDR5. Passmark benchmark score: 130,698 points. Launch price was $12,141.
Processing Power
The EPYC 9634 packs 84 cores / 168 threads, while the EPYC 9745 offers 128 cores / 256 threads — the EPYC 9745 has 44 more cores. Boost clocks reach 3.7 GHz on the EPYC 9634 versus 3.7 GHz on the EPYC 9745 — identical boost frequencies (base: 2.25 GHz vs 2.4 GHz). The EPYC 9634 uses the Genoa (2022−2023) architecture (5 nm, 6 nm), while the EPYC 9745 uses Turin (2024) (3 nm). In PassMark, the EPYC 9634 scores 107,944 against the EPYC 9745's 130,698 — a 19.1% lead for the EPYC 9745. L3 cache: 384 MB (total) on the EPYC 9634 vs 256 MB (total) on the EPYC 9745.
| Feature | EPYC 9634 | EPYC 9745 |
|---|---|---|
| Cores / Threads | 84 / 168 | 128 / 256+52% |
| Boost Clock | 3.7 GHz | 3.7 GHz |
| Base Clock | 2.25 GHz | 2.4 GHz+7% |
| L3 Cache | 384 MB (total)+50% | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 5 nm, 6 nm | 3 nm-40% |
| Architecture | Genoa (2022−2023) | Turin (2024) |
| PassMark | 107,944 | 130,698+21% |
| Geekbench 6 Single | 1,800 | — |
| Geekbench 6 Multi | 85,000 | — |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-4800 memory speed. The EPYC 9634 supports up to 6144 GB of RAM compared to 6 TB — 199.6% more capacity for professional workloads. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SoC (EPYC 9634) and SP5 (EPYC 9745).
| Feature | EPYC 9634 | EPYC 9745 |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-4800 | DDR5-6000 |
| Max RAM Capacity | 6144 GB | 6 TB |
| RAM Channels | 12 | 12 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Virtualization support: AMD-V (EPYC 9634) vs AMD-V, SEV-SNP (EPYC 9745). Primary use case: EPYC 9634 targets Server/Datacenter, EPYC 9745 targets Data Center / High Density. Direct competitor: EPYC 9634 rivals Xeon 8470; EPYC 9745 rivals Xeon 6980P.
| Feature | EPYC 9634 | EPYC 9745 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | AMD-V | AMD-V, SEV-SNP |
| Target Use | Server/Datacenter | Data Center / High Density |
Value Analysis
The EPYC 9634 launched at $10304 MSRP, while the EPYC 9745 debuted at $12141. At current prices ($3949 vs $10588), the EPYC 9634 is $6639 cheaper. In terms of value (PassMark points per dollar), the EPYC 9634 delivers 27.3 pts/$ vs 12.3 pts/$ for the EPYC 9745 — making the EPYC 9634 the 75.6% better value option.
| Feature | EPYC 9634 | EPYC 9745 |
|---|---|---|
| MSRP | $10304-15% | $12141 |
| Avg Price (30d) | $3949-63% | $10588 |
| Performance per Dollar | 27.3+122% | 12.3 |
| Release Date | 2022 | 2024 |
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