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AMD Ryzen 7 3800X vs Intel Core Ultra 7 265K: Comparison
AMD Ryzen 7 3800X vs Intel Core Ultra 7 265K l2 cache compared
The gap that matters here is l2 cache: AMD Ryzen 7 3800X 4 MB against Intel Core Ultra 7 265K 36 MB, which puts Intel Core Ultra 7 265K 89% ahead. Blender Cycles (CPU) backs the spec sheet up. Intel Core Ultra 7 265K scores 478 to 173 over 277 runs, 64% clear. Socket is not the same on both, AM4 on the AMD Ryzen 7 3800X versus FCLGA1851 on the Intel Core Ultra 7 265K.
Who each one is for
Take the AMD Ryzen 7 3800X for gaming and productivity desktop builds wanting the strongest original 8-core Zen 2 performance. Avoid it for budget-conscious buyers, the standard Ryzen 7 3700X delivers very close real-world performance for typically less. Take the Intel Core Ultra 7 265K for buyers wanting strong multi-core productivity throughput and improved efficiency over Intel's 14th Gen at a lower price than the 285K. It is not the one for buyers prioritizing maximum gaming frame rates, AMD's 3D V-Cache chips generally lead in gaming-specific benchmarks. Our rating of the Intel Core Ultra 7 265K (8.3/10): the Intel Core Ultra 7 265K offers near-flagship multithreaded performance for less money, a sensible pick for mixed work and play.
Where the two are identical
Where they agree, they agree completely, performance cores, p-core base clock, form factor, market segment and unlocked multiplier included, so the decision does not turn on any of those. They match on 1 further specification as well.
Which is cheaper, AMD Ryzen 7 3800X or Intel Core Ultra 7 265K?
They cost within a few percent of each other, $394 versus $399 when we last looked.
Frequently asked questions
Do the AMD Ryzen 7 3800X and Intel Core Ultra 7 265K differ on total cores?
Yes. Total Cores reads 8 on the AMD Ryzen 7 3800X versus 20 on the Intel Core Ultra 7 265K.
Is the Memory Channels the same on the AMD Ryzen 7 3800X and Intel Core Ultra 7 265K?
It is. Both are listed at 2, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- AMD Ryzen 7 3800X
- AMD
- Intel Core Ultra 7 265K
- Intel
Product Line
- AMD Ryzen 7 3800X
- Ryzen 7
- Intel Core Ultra 7 265K
- Core Ultra 7
Form Factor
- AMD Ryzen 7 3800X
- Desktop
- Intel Core Ultra 7 265K
- Desktop
Model Number
- AMD Ryzen 7 3800X
- 3800X
- Intel Core Ultra 7 265K
- 265K
Codename
- AMD Ryzen 7 3800X
- Matisse
- Intel Core Ultra 7 265K
- Arrow Lake-S
Release Year
- AMD Ryzen 7 3800X
- 2019
- Intel Core Ultra 7 265K
- 2024
TDP
- AMD Ryzen 7 3800X
- 105 W
- Intel Core Ultra 7 265K
- 125 W
iGPU
- AMD Ryzen 7 3800X
- None
- Intel Core Ultra 7 265K
- Intel Graphics
Market Segment
- AMD Ryzen 7 3800X
- Desktop
- Intel Core Ultra 7 265K
- Desktop
Microarchitecture
- AMD Ryzen 7 3800X
- Zen 2, Ryzen 3000 Series
- Intel Core Ultra 7 265K
- Arrow Lake, Core Ultra 200 Series
Socket
- AMD Ryzen 7 3800X
- AM4
- Intel Core Ultra 7 265K
- FCLGA1851
Socket Status
- AMD Ryzen 7 3800X
- End of Life
- Intel Core Ultra 7 265K
- Current
Process Node
- AMD Ryzen 7 3800X
- 7 nm
- Intel Core Ultra 7 265K
- 3 nm
Total Cores
- AMD Ryzen 7 3800X
- 8
- Intel Core Ultra 7 265K
- 20Best
Performance Cores
- AMD Ryzen 7 3800X
- 8
- Intel Core Ultra 7 265K
- 8
Efficiency Cores
- AMD Ryzen 7 3800X
- 0
- Intel Core Ultra 7 265K
- 12Best
Total Threads
- AMD Ryzen 7 3800X
- 16
- Intel Core Ultra 7 265K
- 20Best
SMT Enabled
- AMD Ryzen 7 3800X
- Yes
- Intel Core Ultra 7 265K
- No
P-Core Base Clock
- AMD Ryzen 7 3800X
- 3.9 GHz
- Intel Core Ultra 7 265K
- 3.9 GHz
P-Core Boost Clock
- AMD Ryzen 7 3800X
- 4.5 GHz
- Intel Core Ultra 7 265K
- 5.4 GHz
Unlocked Multiplier
- AMD Ryzen 7 3800X
- Yes
- Intel Core Ultra 7 265K
- Yes
L2 Cache
- AMD Ryzen 7 3800X
- 4 MB-89%
- Intel Core Ultra 7 265K
- 36 MBBest
L3 Cache
- AMD Ryzen 7 3800X
- 32 MBBest
- Intel Core Ultra 7 265K
- 30 MB-6%
Base Power
- AMD Ryzen 7 3800X
- 105 W
- Intel Core Ultra 7 265K
- 125 W
Max Turbo Power
- AMD Ryzen 7 3800X
- 142 W
- Intel Core Ultra 7 265K
- 250 W
Memory Type
- AMD Ryzen 7 3800X
- DDR4
- Intel Core Ultra 7 265K
- DDR5-6400Best
Max Memory Speed
- AMD Ryzen 7 3800X
- 3200 MT/s
- Intel Core Ultra 7 265K
- 6400 MT/sBest
Memory Channels
- AMD Ryzen 7 3800X
- 2
- Intel Core Ultra 7 265K
- 2
Max Memory Capacity
- AMD Ryzen 7 3800X
- 128 GB
- Intel Core Ultra 7 265K
- 256 GBBest
ECC Support
- AMD Ryzen 7 3800X
- No
- Intel Core Ultra 7 265K
- Yes
Integrated Graphics
- AMD Ryzen 7 3800X
- No
- Intel Core Ultra 7 265K
- Yes
PCIe Generation
- AMD Ryzen 7 3800X
- 4
- Intel Core Ultra 7 265K
- PCIe 5.0
PCIe Lanes
- AMD Ryzen 7 3800X
- 20-17%
- Intel Core Ultra 7 265K
- 24
Launch MSRP
- AMD Ryzen 7 3800X
- $399
- Intel Core Ultra 7 265K
- $394
Retail Availability
- AMD Ryzen 7 3800X
- Retail
- Intel Core Ultra 7 265K
- Boxed Retail
Benchmarks
- 3D Rendering
Blender Cycles (CPU)
- AMD Ryzen 7 3800X
- 173-64%
- Intel Core Ultra 7 265K
- 478Best
Blender 4.5, Blender Open Data (CC0). Median of monster + junkshop + classroom, combined samples/min.
Renders a 3D scene using every core. Shows speed for 3D and rendering work, not gaming.
Which one should you pick?
Choose 3800X if you want the higher L3 cache (32 MB vs 30 MB) and the higher memory channels (2 vs 2).
Choose 265K if you want the higher L2 cache (36 MB vs 4 MB), the higher PCIe lanes (24 vs 20) and the higher blender cycles (CPU) (478 vs 173).
Price comparison
| Retailer | AMD Ryzen 7 3800X | Intel Core Ultra 7 265K |
|---|---|---|
| Consumercarts listing | $399.00 View on Consumercarts listing | |
| Newegg | $394.00 View on Newegg | |
| Micro Center | View on Micro Center | |
| Amazon | View on Amazon |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Intel Core Ultra 7 265K
8.3 / 10 Expert Rating
The Intel Core Ultra 7 265K offers near-flagship multithreaded performance for less money, a sensible pick for mixed work and play.