AMD Ryzen 9 5900X vs Intel Core Ultra 5 Desktop Processor 245K
The AMD Ryzen 9 5900X outshines the Intel Core Ultra 5 Desktop Processor 245K when it comes to multi-core workloads, thanks to its 12 cores and 24 threads, making it a powerhouse for tasks like rendering. However, if you're looking for a more modern platform with PCIe 5.0 and integrated graphics, the Intel processor offers compelling advantages, especially for everyday tasks in 2026. In real-world use, the Ryzen 9 5900X's 70MB cache and high clock speeds translate to stellar gaming performance. But keep in mind, it runs hotter at 105°C, requiring a solid cooling solution. Meanwhile, Intel's 245K, with its 14 cores, runs cooler and supports advanced connectivity features like Thunderbolt 4 and WiFi 7, making it more future-proof for general users.
As an Amazon Associate I earn from qualifying purchases.
AMD Ryzen 9 5900X
Intel Core Ultra 5 Desktop Processor 245K
Comparison: AMD Ryzen 9 5900X vs Intel Core Ultra 5 Desktop Processor 245K
AMD Ryzen 9 5900X
Intel Core Ultra 5 Desktop Processor 245K
| Criterion | AMD Ryzen 9 5900X | Intel Core Ultra 5 Desktop Processor 245K |
|---|---|---|
| Rating | ★4.7(13,275)Amazon | ★4.5(111)Amazon |
Architecture Gen | Zen 3 (Ryzen 5000 Series / Vermeer) | Arrow Lake-S (Core Ultra Series 2) |
Socket Platform | Socket AM4 (PGA 1331) | LGA1851 |
Cores Threads | 12 Cores / 24 Threads | 14 Cores (6 Performance + 8 Efficient) / 14 Threads |
Base Boost Clock | 3.7 GHz Base / Up to 4.8 GHz Boost | P-core: 4.2–5.2 GHz / E-core: 3.6–4.6 GHz |
Cache L2 L3 | 6 MB L2 + 64 MB L3 (70 MB Total) | 24 MB Intel® Smart Cache (L3) + 26 MB L2 (50 MB Total) |
TDP Power | 105 W | 125 W (Processor Base Power) |
Max Turbo Power | 142 W (PPT) | 159 W (Maximum Turbo Power) |
Process Node | TSMC 7nm FinFET (Core Complex) / GlobalFoundries 12nm (I/O Die) | TSMC N3B (Compute Tile) / TSMC N6 (SoC Tile) |
Memory Support | DDR4-3200 MT/s (Official); Dual-Channel; Up to 128 GB; ECC Support: Yes (Unbuffered UDIMM; requires mobo support) | DDR5-6400 MT/s (Official); CUDIMM Support; Up to 192 GB |
Memory Bandwidth Max | N/A (Dependent on RAM config, theoretical max ~51.2 GB/s @ 3200 MT/s) | 102.4 GB/s (at DDR5-6400) |
Pcie Version | PCIe 4.0 (Requires B550 or X570 chipset) | PCIe 5.0 and 4.0 |
Pcie Lanes | 24 Total (20 Usable: x16 Graphics, x4 NVMe) | 24 (20 PCIe 5.0 + 4 PCIe 4.0 Direct from CPU) |
Igpu | None (Discrete graphics card required) | Intel® Graphics (4 Xe-cores, 1.9 GHz Max Dynamic) |
Instruction Features | AMD-V, AVX, AVX2, FMA3, AES-NI, SHA, SSE4.1/4.2 | SSE4.2, AVX2, VNNI, Intel 64, VT-x/d; NPU (13 TOPS AI) |
Cooler Included | No (High-end air or liquid cooler recommended) | No (Heatsink not included) |
Max Temp | 90°C (194°F) TjMax | 105°C (221°F) Max Operating Temperature |
Notes Limits | Dual-CCD design provides massive multi-core throughput. Requires a B550/X570 motherboard for PCIe 4.0 speeds. No integrated graphics. | Requires LGA1851 motherboard (800 Series). No Hyper-Threading. Includes dedicated NPU for AI workloads. |
Chipset Support | A520, B450, B550, X570, X470, X370, B350, A320 (BIOS update required for older chipsets) | Intel 800 Series (Z890, B860, H810, etc.) |
| Pros |
|
|
| Cons |
|
|
As an Amazon Associate I earn from qualifying purchases. | Check Price on Amazon→ | Check Price on Amazon→ |
AMD Ryzen 9 5900X
✓ Pros:
- • Exceptional multi-core performance for rendering and compiling
- • High gaming performance due to Zen 3 architecture and large cache
- • Cost-effective 'flagship' performance using affordable AM4 motherboards
✗ Cons:
- • No upgrade path to newer generations (AM4 is end-of-life for new architectures)
- • Runs hotter than single-CCD chips; requires substantial cooling
- • No integrated graphics
As an Amazon Associate I earn from qualifying purchases.
Intel Core Ultra 5 Desktop Processor 245K
✓ Pros:
- • Significantly improved power efficiency (performance-per-watt) vs. 14th Gen
- • Modern platform connectivity: Native Thunderbolt 4, WiFi 7, PCIe 5.0 lanes
- • Integrated NPU (13 TOPS) accelerates light local AI workloads
- • Run cooler than previous i5-K SKUs under load
✗ Cons:
- • Gaming performance often flat or slightly lower than 14600K/Ryzen 9000
- • Removal of Hyper-Threading reduces multi-core potential in some apps
- • Requires new LGA1851 socket (incompatible with LGA1700)
As an Amazon Associate I earn from qualifying purchases.
Which one is better?
The AMD Ryzen 9 5900X is the better buy for most people - its 12 cores and 24 threads crush the Intel's 14 cores in multi-core tasks. That said, grab the Intel Core Ultra 5 if you need modern connectivity options and a cooler running chip - it's worth considering for everyday usage.
Who should buy each?
Choose the AMD Ryzen 9 5900X if: you need exceptional performance for rendering and compiling, you play demanding games regularly, or you're looking for a cost-effective flagship option.
Choose the Intel Core Ultra 5 Desktop Processor 245K if: you prioritize power efficiency, you want the latest connectivity features like PCIe 5.0, or you require integrated graphics for light tasks.
Conclusion
AMD Ryzen 9 5900X and Intel Core Ultra 5 Desktop Processor 245K are both solid choices. Match the strengths above to your budget and workflow to make the best call.
Frequently Asked Questions
+Which has better value?
AMD Ryzen 9 5900X excels if you value exceptional multi-core performance for rendering and compiling. Intel Core Ultra 5 Desktop Processor 245K is better if you prioritize significantly improved power efficiency (performance-per-watt) vs. 14th gen. Pick based on your budget and daily use.
+Is this an independent review?
Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.
+Do newer models exist?
Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.
Affiliate disclosure
PageBen uses Amazon affiliate links. If you purchase through our links, we may earn a commission at no extra cost to you. This supports independent content for US shoppers.