Every couple of years the desktop CPU world hits one of those genuinely interesting crossroads, and 2026 is shaping up to be one of them. AMD has the Ryzen 9000 series locked in on AM5, with the 3D V-Cache parts in particular doing some absurd things in games. Intel, after a fairly bruising couple of generations, has come out swinging with Core Ultra 200 (“Arrow Lake”) on the brand-new LGA1851 socket. Both sides have a real story to tell, and depending on what you do with your PC, the right answer is genuinely not obvious.
Josh has had both platforms on the bench at the techgeek desk for months now, and our team has been pricing complete builds out of Centre Com, Mwave, PLE, Scorptec, MSY, Umart and Computer Alliance as the AUD has wobbled around. So this is the AU-specific pillar guide we wish we’d had when we started: what to buy, what to skip, and what it actually costs to run once it’s humming away under your desk in Brisbane or Melbourne. Josh’s take, with input from Dale on editorial and Priya on the AI-workload side, is below.
The 2026 lineup at a glance
Let’s get the cast of characters straight before we start throwing benchmark numbers around. On the AMD side, the Ryzen 9000 desktop family on socket AM5 includes the Ryzen 7 9700X (8-core mainstream gamer), the Ryzen 7 9800X3D (8-core with second-gen 3D V-Cache, the gaming darling), the Ryzen 9 9900X (12-core productivity all-rounder) and the flagship Ryzen 9 9950X3D (16-core, 3D V-Cache on one CCD, the “have it all” part).
On the Intel side, Core Ultra 200 on the new LGA1851 socket gives us the Core Ultra 5 245K, the Core Ultra 7 265K and the Core Ultra 9 285K. All three are based on the Arrow Lake architecture, all three drop hyper-threading in favour of a beefier P-core/E-core mix, and all three are paired with Z890 motherboards if you want full overclocking and the fastest memory support.
- Ryzen 7 9700X — around AUD $549 at PLE and Mwave in early 2026
- Ryzen 7 9800X3D — AUD $799–$849, when you can actually find one in stock
- Ryzen 9 9900X — AUD $799 at Centre Com
- Ryzen 9 9950X3D — AUD $1,299, the new productivity-and-gaming halo
- Core Ultra 5 245K — AUD $549 at Scorptec
- Core Ultra 7 265K — AUD $749 across Umart and MSY
- Core Ultra 9 285K — AUD $999–$1,049 depending on the week
Gaming: the 9800X3D still rules the roost
If your build is fundamentally about frames per second at 1080p or 1440p, the conversation begins and ends with AMD’s 3D V-Cache. The Ryzen 7 9800X3D and Ryzen 9 9950X3D both stack an extra 64MB of L3 cache directly on top of the CCD die. In practice that means the CPU almost never has to wait on system memory for the data a game engine needs next, and in CPU-bound titles (think competitive shooters, simulation games, MMOs, anything with a chunky world to stream) you can see 15–30% more frames than a comparably priced Intel part.
We tested at 1440p with an RTX 5080 and a fast 6000 MT/s kit. Counter-Strike 2, Baldur’s Gate 3 in busy city scenes, Microsoft Flight Simulator 2024 and Cities: Skylines II all preferred the 9800X3D. The Core Ultra 9 285K wasn’t embarrassed — it’s a genuinely fast gaming chip, and a big step up from the 14th-gen parts it replaces — but it isn’t the king. Josh’s take: if gaming is more than half of what you do, buy a 9800X3D and don’t look back.
Productivity: Intel claws some pride back
Flip the workload to rendering, code compilation, video encode and heavy spreadsheet work, and the picture shifts. The Core Ultra 9 285K’s 24 cores (8 P-cores + 16 E-cores) chew through embarrassingly parallel work, and in Blender, Handbrake x265 and Cinebench 2024 multi-thread it trades blows with the Ryzen 9 9950X3D and beats the non-X3D 9900X comfortably.
Priya runs a fair amount of local AI inference on her test rig — small language models, image upscaling, the odd LoRA training run — and there the 285K’s NPU and faster AVX-VNNI throughput are genuinely useful. If you’ve been following our coverage of why developers keep gravitating to higher-level languages — see why is the Python programming language so popular — a lot of that ecosystem now leans on CPU-side acceleration for pre-processing even when the GPU does the heavy lifting. The 285K and 9950X3D are both genuinely good at that. The 245K and 9700X, while fine for everyday office work, start to show their core-count limits once you’re rendering and Zooming and recording at the same time.
The efficiency story: Intel improved, AMD still wins per-watt for gaming
This one is huge in Australia, where retail power is brutal. Average AU residential electricity is sitting around 35–40c per kWh in 2026, and small-business tariffs can be higher again. A gaming PC that pulls 250W under load for four hours an evening is meaningfully more expensive to run than one that pulls 130W.
Arrow Lake is a massive efficiency leap over Raptor Lake Refresh — credit where it’s due, Intel finally got serious about power. The 285K is no longer the room-heater the 14900K was. But under gaming load, the Ryzen 7 9800X3D often sits at 60–80W package power while the Core Ultra 9 285K still pulls 120–160W to deliver fewer frames. Over a year of 20-hour-a-week gaming, that’s the difference between roughly $25 and $55 in electricity on the CPU alone. Not life-changing, but not nothing — and your case stays quieter and your aircon works less hard in a Perth summer.
The ACCC has been pushing hard on energy transparency for years; the consumer guidance at accc.gov.au is worth a look if you’re trying to model total cost of ownership for a home office build. The federal industry portfolio’s energy efficiency materials at industry.gov.au are similarly useful for working out where a desktop fits inside your household load.
Platform longevity: AM5 has years left, LGA1851 is a one-shot
This is the single biggest non-benchmark argument, and it’s where AMD has a real edge. AMD has publicly committed to supporting socket AM5 through at least 2027, and we’d be very surprised if Zen 6 desktop parts didn’t drop into a current B650 or X870 board after a BIOS update. That means the X870 motherboard you buy today has a credible upgrade path two CPU generations from now.
Intel’s LGA1851, by contrast, looks like a one-and-done socket. Arrow Lake is on it, Arrow Lake Refresh may or may not appear on it, and the next genuinely new Intel architecture is widely expected to bring another socket change. If you’re the kind of builder who likes to drop a fresh CPU into a known-good board every three years, AM5 is the safer bet.
Motherboard tiers: what to actually buy in Australia
You don’t need to spend a fortune on a board. Here’s how our team would break down the AU market right now:
- AMD B650 / B650E — the sweet spot for a 9700X or 9800X3D build. Plenty of options under AUD $329 at Centre Com and Umart. PCIe 5.0 on the GPU slot is optional; PCIe 5.0 NVMe is standard on B650E.
- AMD X670 / X670E — overkill for most. Worth it only if you want maximum NVMe slots and the very best VRMs for a 9950X3D.
- AMD X870 / X870E — the 2026 default for higher-end AM5 builds. Mandatory USB4, faster DDR5 support out of the box, generally better BIOSes. AUD $499–$899.
- Intel Z890 — basically the only sane choice for a K-series Arrow Lake chip if you want full OC and fast memory. AUD $549–$1,099. B860 boards exist at Scorptec and Mwave for budget 245K builds from around AUD $349.
DDR5, coolers and the bits that bite you
Both platforms are now DDR5-only. Don’t even think about your old DDR4 kit — that ship sailed with the 12th-gen Intel/Ryzen 7000 generation, and frankly anyone still nursing a DDR4 build is closer to needing a final goodbye to Windows XP energy than a modern upgrade path.
For AMD, the magic number remains 6000 MT/s CL30. Going faster rarely helps, and going slower costs you free performance, especially on the X3D parts. Two 16GB sticks is the sweet spot; four sticks force a lower speed.
For Intel Arrow Lake, the memory controller is happier at higher speeds — 6400–7200 MT/s kits are genuinely useful on the 265K and 285K, and CUDIMM kits at 8000+ MT/s are starting to land at PLE for the enthusiast crowd.
Coolers: a 240mm AIO is the practical floor for a 9900X, 9950X3D, 265K or 285K. The 9700X and 9800X3D will both happily run on a quality dual-tower air cooler like a Thermalright Peerless Assassin (about AUD $89 at MSY) — they simply don’t dump that much heat. The 285K under all-core load is the hottest chip in this comparison and benefits most from a 360mm AIO.
Who should buy what
- Pure gamer, $2,500–$3,500 build — Ryzen 7 9800X3D, B650E board, 32GB DDR5-6000, 240mm AIO or top-end air. Best frames per dollar in the country.
- Streamer / content creator, mixed workload — Ryzen 9 9950X3D if budget allows, otherwise Core Ultra 9 285K. Both will encode, render and game without compromise.
- Workstation, all-day rendering — Core Ultra 9 285K on Z890, 64GB DDR5-6400, 360mm AIO. The E-cores genuinely earn their keep here.
- Budget all-rounder — Ryzen 7 9700X or Core Ultra 5 245K. The 9700X edges it on power draw and platform future; the 245K edges it on multi-thread for the same money.
- Home office / light gaming — honestly, a 9700X build will be the quieter, cooler, lower-bill machine. If you mostly live in browser tabs and the odd weekend session, that’s the pick. If you live more in Office and OneNote than in games, a productive tablet form factor might serve you better than a tower at all.
Final thoughts
Both AMD and Intel have shipped genuinely good desktop platforms in this cycle, which hasn’t always been true. The Ryzen 9 9950X3D is the best single CPU on sale in Australia in 2026 if money is no object — it games like a 9800X3D and works like a 285K. The 9800X3D is the smart-money gaming pick. The Core Ultra 9 285K is the right choice for productivity-first builders who want Intel’s platform stability and don’t mind that the socket is a dead-end. And the Core Ultra 5 245K and Ryzen 7 9700X are both excellent mainstream chips that will keep a mid-range build snappy for years.
Our team’s overall verdict, with Josh’s gaming hat on and Dale’s editorial pragmatism applied: for most Australians building a new desktop in 2026, AMD AM5 — and specifically a 9800X3D on a decent B650E or X870 board — is the call. You get the best gaming experience, the lowest power bill, the longest upgrade runway, and a parts list every one of Centre Com, Mwave, PLE, Scorptec, MSY, Umart and Computer Alliance can fulfil from local stock. Intel is back in the conversation in a way it hasn’t been for a while, and that’s good for all of us — but the conversation, for now, still ends with AMD.
