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AMD Ryzen 9 3900XT vs Intel 11th Gen Intel Core i9 11900K: Comparison
AMD Ryzen 9 3900XT vs Intel 11th Gen Intel Core i9 11900K l3 cache compared
L3 cache is where these two genuinely part company, AMD Ryzen 9 3900XT 64 MB against Intel 11th Gen Intel Core i9 11900K 16 MB, a 75% lead for AMD Ryzen 9 3900XT. L2 cache runs the same way, 6 MB on the AMD Ryzen 9 3900XT versus 2 MB on the Intel 11th Gen Intel Core i9 11900K, another win for AMD Ryzen 9 3900XT. Tdp is not the same on both, 105 W on the AMD Ryzen 9 3900XT versus 125 W on the Intel 11th Gen Intel Core i9 11900K. Integrated graphics is not the same on both, No on the AMD Ryzen 9 3900XT versus Yes on the Intel 11th Gen Intel Core i9 11900K.
AMD Ryzen 9 3900XT vs Intel 11th Gen Intel Core i9 11900K: which one fits your build
Buy the AMD Ryzen 9 3900XT for mainstream desktop builds and everyday productivity, though it is not the pick for extreme overclocking (unless K/X-series) and workstation-class multi-threaded workloads. The Intel 11th Gen Intel Core i9 11900K suits gaming-focused desktop builds prioritizing single-thread and per-core performance. It is not the one for buyers specifically needing maximum core count for heavy multi-threaded work, the outgoing 10-core i9-10900K or AMD's competing Ryzen 9 chips offer more raw cores.
What AMD Ryzen 9 3900XT and Intel 11th Gen Intel Core i9 11900K have in common
Where they agree, they agree completely, efficiency cores, socket status, market segment, smt enabled and memory type included, so the decision does not turn on any of those. They match on 5 further specifications as well.
AMD Ryzen 9 3900XT vs Intel 11th Gen Intel Core i9 11900K price
The Intel 11th Gen Intel Core i9 11900K asks 8% more, $539 against $499 for the AMD Ryzen 9 3900XT.
Frequently asked questions
Do the AMD Ryzen 9 3900XT and Intel 11th Gen Intel Core i9 11900K differ on total cores?
Yes. Total Cores reads 12 on the AMD Ryzen 9 3900XT versus 8 on the Intel 11th Gen Intel Core i9 11900K.
Is the Memory Channels the same on the AMD Ryzen 9 3900XT and Intel 11th Gen Intel Core i9 11900K?
It is. Both are listed at 2, so it is not a reason to pick one over the other.
Which is cheaper, AMD Ryzen 9 3900XT or Intel 11th Gen Intel Core i9 11900K?
The Intel 11th Gen Intel Core i9 11900K asks 8% more, $539 against $499 for the AMD Ryzen 9 3900XT.
Specs and benchmarks
Product Line
- AMD Ryzen 9 3900XT
- Ryzen 9
- Intel 11th Gen Intel Core i9 11900K
- Core i9
Form Factor
- AMD Ryzen 9 3900XT
- Desktops, Boxed Processor
- Intel 11th Gen Intel Core i9 11900K
- Desktop
Model Number
- AMD Ryzen 9 3900XT
- 3900XT
- Intel 11th Gen Intel Core i9 11900K
- 11900K
Codename
- AMD Ryzen 9 3900XT
- Matisse
- Intel 11th Gen Intel Core i9 11900K
- Rocket Lake
Release Year
- AMD Ryzen 9 3900XT
- 2020
- Intel 11th Gen Intel Core i9 11900K
- 2021
TDP
- AMD Ryzen 9 3900XT
- 105 W
- Intel 11th Gen Intel Core i9 11900K
- 125 W
iGPU
- AMD Ryzen 9 3900XT
- None
- Intel 11th Gen Intel Core i9 11900K
- Intel UHD Graphics 750
Market Segment
- AMD Ryzen 9 3900XT
- Desktop
- Intel 11th Gen Intel Core i9 11900K
- Desktop
Socket
- AMD Ryzen 9 3900XT
- AM4
- Intel 11th Gen Intel Core i9 11900K
- FCLGA1200
Socket Status
- AMD Ryzen 9 3900XT
- End of Life
- Intel 11th Gen Intel Core i9 11900K
- End of Life
Process Node
- AMD Ryzen 9 3900XT
- 7 nm
- Intel 11th Gen Intel Core i9 11900K
- 14 nm
Total Cores
- AMD Ryzen 9 3900XT
- 12Best
- Intel 11th Gen Intel Core i9 11900K
- 8
Performance Cores
- AMD Ryzen 9 3900XT
- 12Best
- Intel 11th Gen Intel Core i9 11900K
- 8
Efficiency Cores
- AMD Ryzen 9 3900XT
- 0
- Intel 11th Gen Intel Core i9 11900K
- 0
Total Threads
- AMD Ryzen 9 3900XT
- 24Best
- Intel 11th Gen Intel Core i9 11900K
- 16
SMT Enabled
- AMD Ryzen 9 3900XT
- Yes
- Intel 11th Gen Intel Core i9 11900K
- Yes
P-Core Base Clock
- AMD Ryzen 9 3900XT
- 3.8 GHz
- Intel 11th Gen Intel Core i9 11900K
- 3.5 GHz
P-Core Boost Clock
- AMD Ryzen 9 3900XT
- 4.7 GHz
- Intel 11th Gen Intel Core i9 11900K
- 5.3 GHz
L2 Cache
- AMD Ryzen 9 3900XT
- 6 MBBest
- Intel 11th Gen Intel Core i9 11900K
- 2 MB-67%
L3 Cache
- AMD Ryzen 9 3900XT
- 64 MBBest
- Intel 11th Gen Intel Core i9 11900K
- 16 MB-75%
Base Power
- AMD Ryzen 9 3900XT
- 105 W
- Intel 11th Gen Intel Core i9 11900K
- 125 W
Memory Type
- AMD Ryzen 9 3900XT
- DDR4
- Intel 11th Gen Intel Core i9 11900K
- DDR4
Max Memory Speed
- AMD Ryzen 9 3900XT
- 3200 MT/sBest
- Intel 11th Gen Intel Core i9 11900K
- 4 MT/s
Memory Channels
- AMD Ryzen 9 3900XT
- 2
- Intel 11th Gen Intel Core i9 11900K
- 2
ECC Support
- AMD Ryzen 9 3900XT
- No
- Intel 11th Gen Intel Core i9 11900K
- No
Integrated Graphics
- AMD Ryzen 9 3900XT
- No
- Intel 11th Gen Intel Core i9 11900K
- Yes
PCIe Generation
- AMD Ryzen 9 3900XT
- PCIe 4.0
- Intel 11th Gen Intel Core i9 11900K
- PCIe 4.0
PCIe Lanes
- AMD Ryzen 9 3900XT
- 20
- Intel 11th Gen Intel Core i9 11900K
- 20
Launch MSRP
- AMD Ryzen 9 3900XT
- $499
- Intel 11th Gen Intel Core i9 11900K
- $539
Retail Availability
- AMD Ryzen 9 3900XT
- Retail
- Intel 11th Gen Intel Core i9 11900K
- Retail
Which one should you pick?
Choose 3900XT if you want the higher L2 cache (6 MB vs 2 MB), the higher L3 cache (64 MB vs 16 MB) and the higher memory channels (2 vs 2).
Choose 11900K if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | AMD Ryzen 9 3900XT | Intel 11th Gen Intel Core i9 11900K |
|---|---|---|
| Consumercarts listing | $499.00 View on Consumercarts listing | $539.00 View on Consumercarts listing |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.