EPYC 7443
Ryzen 9 9900X
EPYC 7443 vs Ryzen 9 9900X Performance Spectrum
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.
EPYC 7443 vs Ryzen 9 9900X FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 7443 vs Ryzen 9 9900X: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 7443
2021Why buy it
- ✅+4.1% higher PassMark.
- ✅+100% larger total L3 cache (128 MB vs 64 MB).
- ✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 128 PCIe lanes vs 24.
- ✅433.3% more PCIe lanes (128 vs 24) for storage and expansion-heavy builds.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 9 9900X across 50 shared CPU benchmark tests.
- ❌Lower PassMark per dollar, at 28.2 vs 109.3 PassMark/$ ($2,010 MSRP vs $499 MSRP).
- ❌66.7% higher power demand at 200W vs 120W.
- ❌Older platform position on SP3 with DDR4, while Ryzen 9 9900X moves to AM5 and DDR5.
- ❌No integrated graphics, while Ryzen 9 9900X can still boot and troubleshoot without a discrete GPU.
Ryzen 9 9900X
2024Why buy it
- ✅Better for gaming: +26.9% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $1,511 less on MSRP ($499 MSRP vs $2,010 MSRP).
- ✅Delivers 287.1% more PassMark for each dollar spent, at 109.3 vs 28.2 PassMark/$ ($499 MSRP vs $2,010 MSRP).
- ✅Draws 120W instead of 200W, a 80W reduction.
- ✅Newer platform on AM5 with DDR5 support instead of SP3 and DDR4.
Trade-offs
- ❌Lower PassMark (54,530 vs 56,743).
- ❌Smaller total L3 cache (64 MB vs 128 MB).
- ❌Less compelling for workstation-style loads than EPYC 7443, which brings 24 cores / 48 threads and 128 PCIe lanes.
Quick Answers
So, is Ryzen 9 9900X better than EPYC 7443?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 7443 vs Ryzen 9 9900X Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 7443
The EPYC 7443 is manufactured by AMD. It was released in 15 March 2021 (4 years ago). It is based on the Milan (2021−2023) architecture. It features 24 cores and 48 threads. Base frequency is 2.85 GHz, with boost up to 4 GHz. L3 cache: 128 MB (total). L2 cache: 512 kB (per core). Built on 7 nm+ process technology. Socket: SP3. Thermal design power (TDP): 200 Watt. Memory support: DDR4-3200. Passmark benchmark score: 56,743 points. Launch price was $2,010.
Ryzen 9 9900X
The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 54,530 points. Launch price was $499.
Processing Power
The EPYC 7443 packs 24 cores / 48 threads, while the Ryzen 9 9900X offers 12 cores / 24 threads — the EPYC 7443 has 12 more cores. Boost clocks reach 4 GHz on the EPYC 7443 versus 5.6 GHz on the Ryzen 9 9900X — a 33.3% clock advantage for the Ryzen 9 9900X (base: 2.85 GHz vs 4.4 GHz). The EPYC 7443 uses the Milan (2021−2023) architecture (7 nm+), while the Ryzen 9 9900X uses Granite Ridge (2024−2025) (4 nm). In PassMark, the EPYC 7443 scores 56,743 against the Ryzen 9 9900X's 54,530 — a 4% lead for the EPYC 7443. L3 cache: 128 MB (total) on the EPYC 7443 vs 64 MB (total) on the Ryzen 9 9900X.
| Feature | EPYC 7443 | Ryzen 9 9900X |
|---|---|---|
| Cores / Threads | 24 / 48+100% | 12 / 24 |
| Boost Clock | 4 GHz | 5.6 GHz+40% |
| Base Clock | 2.85 GHz | 4.4 GHz+54% |
| L3 Cache | 128 MB (total)+100% | 64 MB (total) |
| L2 Cache | 512 kB (per core) | 1 MB (per core)+100% |
| Process | 7 nm+ | 4 nm-43% |
| Architecture | Milan (2021−2023) | Granite Ridge (2024−2025) |
| PassMark | 56,743+4% | 54,530 |
| Cinebench R23 Multi | — | 33,003 |
| Geekbench 6 Single | — | 3,401 |
| Geekbench 6 Multi | — | 19,756 |
Memory & Platform
The EPYC 7443 uses the SP3 socket (PCIe 4.0), while the Ryzen 9 9900X uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the EPYC 7443 versus DDR5-5600 on the Ryzen 9 9900X — the Ryzen 9 9900X supports 75% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7443 supports up to 4096 GB of RAM compared to 256 GB — 1500% more capacity for professional workloads. Memory channels: 8 (EPYC 7443) vs 2 (Ryzen 9 9900X). PCIe lanes: 128 (EPYC 7443) vs 24 (Ryzen 9 9900X) — the EPYC 7443 offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7443) and A620,B650,X670,X870 (Ryzen 9 9900X).
| Feature | EPYC 7443 | Ryzen 9 9900X |
|---|---|---|
| Socket | SP3 | AM5 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | 3200 | DDR5-5600+75% |
| Max RAM Capacity | 4096 GB+1500% | 256 GB |
| RAM Channels | 8+300% | 2 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128+433% | 24 |
Advanced Features
Only the Ryzen 9 9900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 9 9900X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (EPYC 7443) vs AMD-V (Ryzen 9 9900X). The Ryzen 9 9900X includes integrated graphics (Radeon 610M), while the EPYC 7443 requires a dedicated GPU. Direct competitor: EPYC 7443 rivals Xeon Platinum 8362.
| Feature | EPYC 7443 | Ryzen 9 9900X |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | Radeon 610M |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | VT-x, VT-d | AMD-V |
Value Analysis
At launch, the EPYC 7443 was priced at $2010, while the Ryzen 9 9900X came in at $499. On launch pricing ($2010 vs $499), Ryzen 9 9900X was $1511 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7443 delivers 28.2 pts/$ vs 109.3 pts/$ for the Ryzen 9 9900X — making the Ryzen 9 9900X the 117.9% better value option.
| Feature | EPYC 7443 | Ryzen 9 9900X |
|---|---|---|
| MSRP | $2010 | $499-75% |
| Performance per Dollar | 28.2 | 109.3+288% |
| Release Date | 2021 | 2024 |
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