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The Prescott Pentium 4 3.2 GHz and Pentium 4 Extreme Edition 3.4 GHz are different processors, not two versions distinguished only by a 200 MHz clock gap. The early 2004 Prescott model uses a 90 nm process, while the 3.4 GHz Extreme Edition uses Intel’s 0.13-micron design and adds 2 MB of L3 cache. Either CPU will work only if the motherboard supports its package, bus, and BIOS requirements; the name and clock speed alone cannot establish compatibility.
What are these Pentium 4 processors?
Intel’s February 2004 quick-reference guide lists 90 nm Pentium 4 models at 3.40, 3.20, 3.00, and 2.80 GHz, alongside a 0.13-micron Pentium 4 Extreme Edition at 3.40 GHz. The same guide lists the Pentium 4 550 at 3.40 GHz and Pentium 4 540 at 3.20 GHz in June 2004. These dates and model numbers help distinguish the early Prescott launch from later Pentium 4 products. Intel’s 2004 Pentium 4 quick-reference guide
“Prescott” identifies the 90 nm Pentium 4 generation. The P4 EE 3.4 GHz is the higher-end Extreme Edition, not simply a Prescott running at a slightly higher frequency. Intel described its Extreme Edition as aimed at high-end gamers and computing power users, and specified 2 MB of integrated L3 cache for the 775-land version. Intel’s Extreme Edition specification
How do the Prescott 3.2 GHz and P4 EE 3.4 GHz differ?
| Feature | Prescott Pentium 4 3.2 GHz | Pentium 4 Extreme Edition 3.4 GHz |
|---|---|---|
| Process generation | 90 nm Prescott, per Intel’s 2004 quick-reference guide | 0.13 micron for the 3.40 GHz Extreme Edition listed in Intel’s 2004 guide |
| Clock speed | 3.20 GHz | 3.40 GHz |
| Package/socket | Not established by the cited quick-reference entry; verify the exact CPU package and motherboard socket | Intel’s cited specification describes a 775-land package; check the exact processor and board |
| System bus | Not stated in the cited quick-reference entry | Intel specifies an 800 MHz or 1066 MHz system bus across the 3.40 GHz and 3.46 GHz Extreme Edition versions; verify which bus applies to the exact CPU |
| Cache | Cache hierarchy and capacities are not stated in the cited quick-reference entry | 2 MB integrated L3 cache for the 775-land specification |
| Hyper-Threading | Not stated in the cited quick-reference entry | Supported, according to Intel’s specification for the 3.40 GHz and 3.46 GHz versions |
| Architecture | Not stated in the cited quick-reference entry | NetBurst, according to Intel’s specification |
Intel’s Extreme Edition specification describes a 3.40 GHz and 3.46 GHz offering; its bus figures therefore apply across those variants, not necessarily to every 3.40 GHz chip regardless of package or model. The frequency comparison by itself says little about real-world performance: the available source material does not establish benchmark results for these specific processors.
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Will one fit your motherboard?
Do not assume compatibility because both CPUs are Pentium 4s or because one has a higher clock speed. Intel’s cited Extreme Edition specification identifies a 775-land package, but the early Prescott listing does not establish the package for every 3.2 GHz part. A board must match the processor’s physical socket and support its electrical and firmware requirements.
- Identify the exact processor. Record its full model designation and, if available, stepping. “Pentium 4 3.2 GHz” alone may not identify the package or board-support requirements.
- Check the motherboard manual or CPU-support list. Confirm the processor is supported, including any required BIOS version. A matching socket does not guarantee BIOS recognition or operation.
- Match the bus requirement. Verify that the board supports the exact processor’s front-side-bus rating. Intel lists 800 MHz or 1066 MHz buses for the specified 3.40 GHz and 3.46 GHz Extreme Edition variants.
- Confirm cooling and power readiness. Use the motherboard and system documentation to check processor cooling and power requirements before installation; the cited sources do not establish a universal requirement for every board and CPU combination.
Intel’s later 775-land datasheet lists Pentium 4 6xx models from 3.00 through 3.80 GHz and documents Hyper-Threading and NetBurst for that family. That later family information does not prove support for a 3.2 GHz Prescott or 3.4 GHz Extreme Edition on a particular motherboard. Intel’s 775-land Pentium 4 datasheet
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What to check before buying a replacement
- Look up the motherboard’s exact model and revision, then consult its CPU-support list for the specific processor and minimum BIOS version.
- Compare the board’s socket and supported bus with the exact chip’s package and bus rating. Do not buy based on “Pentium 4” or GHz alone.
- Ask for clear seller photographs showing the processor markings and inspect them against the board’s supported model information.
- Check the seller’s return policy, particularly if the board’s BIOS version or the processor’s exact stepping cannot be confirmed.
- Assess physical condition before installation. These are legacy processors; Intel maintains a product-discontinuance record for the Pentium 4 Extreme Edition 3.40 GHz with 800 MHz FSB. Intel’s discontinuance record
If a physical replacement is appropriate, “Pentium 4 3.2 GHz Prescott processor” is a useful search phrase, but it is not a substitute for verifying the exact model and compatibility. The Extreme Edition 3.4 GHz should likewise be treated as specialist or used inventory; current listings, availability, and prices are not established here.
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Which one should you choose?
Choose the processor supported by your existing motherboard and BIOS, not the one with the more appealing clock number. The P4 EE has documented 2 MB L3 cache and Hyper-Threading in Intel’s 775-land specification, but that does not make it a drop-in upgrade for a Prescott system. If no trustworthy motherboard support information confirms the exact CPU, do not assume the swap will work.
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