Intel
Pentium 4 SL4SG 1.4GHZ/256KB/400MHz /1.7V (Socket 423) "WILLAMETTE" CPU
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
Bottom line: The Pentium 4 SL4SG 1.4GHZ/256KB/400MHz /1.7V (Socket 423) "WILLAMETTE" CPU is a niche pick — read recent reviews before buying in the retro cpus category. Read recent reviews carefully before committing.
With a 256 KB L2 cache and a bus speed of 400 MHz, this CPU is can handle RETRO gaming/Computing and/or older software/programming. The processor is built with a Socket 423 interface, ensuring compatibility with a range of motherboard models.
SpecPicks Verdict
SpecPicks classifies Intel Pentium 4 SL4SG 1.4GHZ/256KB/400MHz /1.7V (Socket 423)… as a niche pick — read recent reviews before buying in the retro cpus category, based on limited Amazon review volume so far and our ranking model that weights rating × review-volume × price-fit. Intel's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for retro cpus of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Backed by Intel's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Full Specifications
| fsb_mhz | 400 |
|---|---|
| core_name | Willamette |
| l2_cache_kb | 256 |
| core_clock_ghz | 1.4 |
| core_voltage_v | 1.7 |
Ready to buy?
Intel Pentium 4 SL4SG 1.4GHZ/256KB/400MHz /1.7V (Socket 423) "WILLAMETTE" CPU is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
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