Intel
Intel Core Ultra 9 285K LGA1851 3.7GHz 24-Core CPU
In stock
SKU BX80768285K
R 15 141,00
Or pay in up to 6 interest-free instalments from R 2 523,50 with Stitch Pay Later.
Free courier delivery: 1–3 working days to Johannesburg, Pretoria, Cape Town, Durban and within 100km of them, 2–4 working days further out. Express 1–2 working days for R150.
| Delivering to | Time | Cost |
|---|---|---|
| Major centres: Johannesburg, Pretoria, Cape Town, Durban and within 100km of them | 1–3 working days | R180, free from R2 500 |
| More than 100km from a major centre | 2–4 working days | R180, free from R2 500 |
| Express delivery, anywhere | 1–2 working days | R210, R150 from R2 500 |
| Collect from Edenvale | When we tell you it’s ready | Free |
- Courier delivery is R180 on orders under R2 500 and free on orders of R2 500 or more. Choose express or collection at checkout.
- Times count from the day your order is dispatched. Orders placed before 12:00 on a working day ship the same day; after 12:00, on weekends or on public holidays they ship the next working day.
- Pre-built PCs and PC Builder builds need 2–4 extra working days to assemble and test before they ship.
- The area check is a guide based on your postal code, and delivery times are the courier’s estimates. Please make sure your address and postal code are correct — an incorrect address delays delivery.
- Full shipping policy
- Free courier delivery over R2 500 Anywhere in South Africa. R180 on orders under R2 500
- Official warranty Local South African warranty and support
- Expert help Talk to a builder before you buy
Intel's desktop flagship — twenty-four cores to 5.7GHz, and far cooler than the i9 it replaced.
Quick Specs
- 24 cores (8 P-cores + 16 E-cores) / 24 threads
- 3.7GHz P-core base, up to 5.7GHz turbo
- 36MB Intel Smart Cache
- 125W base power, 250W max turbo
- Intel Graphics, 4 Xe-cores; 13 TOPS NPU
The top of the LGA1851 stack
Eight Performance-cores turboing to 5.7GHz handle games and foreground work; sixteen efficiency cores take on rendering, encoding and compiling behind them. Add 36MB of cache, DDR5-6400 support, PCIe 5.0 with 24 lanes and Intel's AI Boost NPU, and this is Intel's most complete desktop processor — and notably better behaved thermally than the 14900K it succeeded, which is a real quality-of-life change.
Two honest comparisons
Against the Core Ultra 7 270K: identical core layout, identical cache, 200MHz less turbo, meaningfully cheaper. Most people should buy the 270K. Against AMD: for pure gaming a Ryzen 7 9800X3D is generally faster and much cooler for less money. The 285K makes sense when you want Intel's fastest, twenty-four cores of production capability, and the NPU, all in one machine. 250W maximum turbo, no cooler included — plan on a 360mm AIO.
FEATURES:
- 5.7GHz max turbo — Intel's fastest current desktop chip
- 8 P-cores + 16 E-cores with 36MB Smart Cache
- Unlocked multiplier for Z890 overclocking
- Intel AI Boost NPU — 13 TOPS; Xe graphics on board
- DDR5 up to 6400 MT/s, max 256GB
SPECIFICATIONS:
- Model: Intel Core Ultra 9 285K (BX80768285K)
- Total Cores: 24 (8 Performance-cores + 16 Efficient-cores)
- Threads: 24
- P-core Base Frequency: 3.7 GHz
- P-core Max Turbo Frequency: 5.5 GHz
- Max Turbo Frequency: 5.7 GHz
- Cache: 36 MB Intel Smart Cache
- Processor Base Power: 125 W
- Maximum Turbo Power: 250 W
- Socket: FCLGA1851
- Memory: DDR5 up to 6400 MT/s, 2 channels, max 256 GB
- Integrated Graphics: Intel Graphics, 4 Xe-cores
- NPU: Intel AI Boost, 13 TOPS (Int8)
- PCI Express: PCIe 5.0 and 4.0, up to 24 lanes
- Bundled Cooler: Not included
- Warranty: 3 Year
WHAT'S IN THE BOX:
- Intel Core Ultra 9 285K processor
- Documentation
- Cooler sold separately — 360mm AIO recommended
Why Intel?
Core Ultra delivers flagship performance without the thermal drama that dogged the previous generation. Every Intel processor from AZonline is genuine boxed stock carrying a 3 Year warranty.
Key details
| Socket | LGA1851 |
|---|---|
| Cores | 24 |
| Threads | 24 |
| TDP | 125 W |
| Integrated graphics | Yes |
| Memory type | DDR5 |
| Category | Processors (CPU) |
| Brand | Intel |
| Warranty | 3 Years |
Questions
Before you buy
Which motherboards will this CPU fit?
It uses the LGA1851 socket, so it needs a motherboard with a matching socket. Sockets are not cross-compatible - a chip will not physically fit a board built for a different one. Every motherboard we list shows its socket on the Specifications tab, and it is worth checking the board maker’s support list for a BIOS update if the board is from an earlier generation than the chip.
How many cores and threads does it have?
24 cores and 24 threads. Cores do the work; threads are the number of jobs the chip can keep in flight at once. Games lean on a handful of fast cores, while rendering, compiling and video export scale with the total count.
What sort of cooler does it need?
It is rated at 125W TDP, which is the heat a cooler has to carry away under sustained load. Match or beat that figure with the cooler you choose, and check the What’s in the box list above - some processors ship with a cooler, some do not. Our PC Builder only offers coolers that fit the socket you have picked.
Do I need a separate graphics card with it?
No - this processor has integrated graphics, so it will drive a display on its own. You still want a graphics card for gaming or GPU-accelerated creative work, but the machine will boot and run without one.
Is it in stock, and when will it ship?
Yes - this one is in stock. Order before 12:00 on a working day and it ships the same day; after that it goes out the next working day. We are open 09:00 to 16:30, Monday to Friday, so an order placed over a weekend or a public holiday ships on the next working day.
What does delivery cost, and how long does it take?
We deliver by courier anywhere in South Africa, and delivery is R180 on orders under R2 500 and free on orders of R2 500 or more. It takes 1-3 working days to Johannesburg, Pretoria, Cape Town, Durban and areas within 100km of them, and 2-4 working days to areas more than 100km from a major centre, counted from the day the order is dispatched. Need it sooner? Express delivery is 1-2 working days for R210, or R150 on orders of R2 500 or more - choose it at checkout. We do not ship outside South Africa.
Can I collect instead of having it delivered?
Yes. Collection is from 11 Voortrekker Avenue, Edenvale, Gauteng, by arrangement - message us first so we can have the order picked and waiting. We are open 09:00 to 16:30, Monday to Friday.
What warranty does it carry, and how do I claim?
The warranty period for this product is listed at the end of the Specifications section above. Claims go through us, not the manufacturer - contact us with your order number and a description of the fault and we will handle it from there. Separately from any warranty, the Consumer Protection Act gives you six months from delivery to return goods that are defective, unsafe or not fit for their intended purpose.
What if I change my mind?
You have 14 days from delivery to change your mind - longer than the seven days the Electronic Communications and Transactions Act requires. The item needs to be unused and in its original packaging, and we pay the return shipping. Refunds go back to the payment method you used, within 30 days of the return reaching us.
How can I pay?
Payments are processed by Stitch. At the last step of checkout you are taken to Stitch’s secure page to pay, and brought back here once it is done. Your card details are entered on Stitch’s secure, PCI-compliant page and never touch our systems.
Something not covered here? Read the full FAQ, or WhatsApp us on 079 491 0181.
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