458785-B21 HP Xeon E5420 2.50GHz Processor Upgrade
458785-B21 Overview
This listing covers the 458785-B21 HP Xeon E5420 2.50GHz Processor Upgrade with ordering reference 458785-B21. The supplied product data records model: E5420; cores: 4; threads: 4; base clock: 2.50 GHz; L3 cache: 12 MB.
Compatibility should be checked against the exact server, workstation or motherboard model before purchase. The listed socket is LGA771. Quote or compatibility enquiries should reference 458785-B21. Check current availability and the exact supplied configuration before purchase. The source specification lists the condition as OEM.
678.95 AED
Description
458785-B21 HP Xeon E5420 2.50GHz Processor Upgrade Product Details
This listing covers the 458785-B21 HP Xeon E5420 2.50GHz Processor Upgrade with ordering reference 458785-B21. The supplied product data records model: E5420; cores: 4; threads: 4; base clock: 2.50 GHz; L3 cache: 12 MB.
Key Specifications
| Specification | Product Data |
|---|---|
| Part Number | 458785-B21 |
| Listing Brand | HP |
| Product Type | Processor Upgrade |
| Catalog Category | HPE CPU |
| Processor Type | Server |
| Series | Xeon Processor |
| Model | E5420 |
| Code Name | Harpertown |
| Core Stepping | C0 |
| Manufacturing Process | 45 NM |
| CPU Id String | 10676 |
| Cores | 4 |
| Threads | 4 |
| Base Clock | 2.50 GHz |
| L2 Cache | 12 MB |
| L3 Cache | 12 MB |
| Front Side Bus | 1333 MHz |
| Thermal Design Power | 80 Watts |
| Vid Voltage Range | 0.850V-1.3500V |
| Socket | LGA771 |
| Condition | OEM |
Compatibility and Selection Guidance
Compatibility should be checked against the exact server, workstation or motherboard model before purchase. The listed socket is LGA771. Quote or compatibility enquiries should reference 458785-B21.
- Match the full part number with the supported hardware list for the target system.
- Verify socket, generation, firmware or BIOS support and thermal design power.
- Confirm whether the supplied item is a processor only or an upgrade kit with additional hardware.
Ordering Information
Check current availability and the exact supplied configuration before purchase. The source specification lists the condition as OEM. Use 458785-B21 on the quotation request so the exact item can be checked.
Product images are for reference. Verify the part number, technical specifications, compatibility, supplied condition and included components before purchase.

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