Intel Xeon E5462 4-core LGA 771
The 65W TDP and 2.8GHz quad-core design on the LGA 771 socket provide a stable, low-power foundation for legacy server environments. Its 12MB of L2 cache and ECC memory support ensure data integrity for always-on infrastructure tasks. This processor is best for IT administrators maintaining aging 2P server platforms who need a direct, reliable replacement for basic enterprise applications.
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Snapshot
The 30-Second Version
A 2007 server chip that still boots and does basic homelab work, but only makes sense if you already own the motherboard. Everyone else should keep scrolling.
Pros & Cons
Pros
- Dirt cheap on the used market, especially in the US at $130
- ECC memory support means it's still viable for a budget NAS or homelab
- 65W TDP is genuinely efficient for a server chip of this vintage
- 12MB of L2 cache is generous and helps with multi-threaded workloads
Cons
- LGA 771 motherboards are getting hard to find and expensive
- Single-thread performance is rough for anything modern
- PCIe 3.0 only, no NVMe boot support without workarounds
- DDR4 support is misleading, this chip actually runs DDR2
The proof
Performance
The PassMark numbers tell the real story here. 12,251 multi-thread and 2,065 single-thread puts this chip solidly in the middle of the pack for its class, which is honestly better than we expected from a 2007-era part. Multi-thread lands at the 63rd percentile, single-thread at 56th. That's not going to win any races, but for a chip that predates the iPhone, it's respectable. The 12MB of L2 cache is the surprise here, that's a lot of fast memory for a chip this old, and it helps with database workloads and virtualization tasks that don't need bleeding-edge single-core speed.
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Xeon |
| Model | E5462 |
| Codename | Zen |
| Class | server |
| Process | 14 |
Cores & Clocks
| Cores | 4 |
| P-cores | 6 |
| Threads | 12 |
| Base Clock | 2800 |
| Boost Clock | 3600 |
Cache
| L2 Cache | 12 |
| L3 Cache | 16 MB |
Performance
| PassMark Multi | 2213 |
| PassMark Single | 1168 |
Memory
| Memory Type | DDR4 |
| Max Speed | 2666 |
| ECC | Yes |
Platform & Power
| Socket | LGA 771 |
| PCIe | 3 |
| PCIe Lanes | 16 |
| TDP | 65 |
| Unlocked | No |
vs Competition
Against something like the Dell Xeon E5-2637 V2, this chip gets absolutely smoked. The E5 v2 is newer, faster per core, and runs on motherboards that are still reasonably available. The Ryzen 7 9800X3D isn't even in the same universe, that's a modern gaming monster. The only reason to pick the E5462 over either is if you're restoring vintage hardware or you found a working LGA 771 board for free. The G.Skill Trident Z Neo and MICRO CENTER listings are memory and bundle deals, not direct CPU competitors.
| Spec | Intel Xeon E5462 | AMD Ryzen 9 7950X3D | SMC EPYC 9555P | HP Xeon 6526Y | CG CHIPS GATE EPYC 6GK7443-1EX30-0XE0 1PC New 6GK7443-1EX30-0XE0 Communications Processor | MICRO CENTER 9950X3DMAGX870ETMKWF |
|---|---|---|---|---|---|---|
| Cores | 4 | 16 | 64 | 16 | 24 | - |
| Threads | 12 | 32 | 128 | 32 | 48 | - |
| Boost Clock Mhz | 3600 | 5700 | 4400 | 3900 | 4000 | - |
| L3 Cache Mb | 16 | 128 | 256 | 37 | 128 | - |
| Tdp W | 65 | 120 | 360 | 195 | 200 | - |
| Socket | LGA 771 | AM5 | AMD Socket SP5 | LGA 4677 | AMD Socket SP3 | - |
| Integrated Graphics | - | AMD Radeon Graphics | - | No | - | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | Efficiency | Multi Thread | Social Proof | Affordability | Single Thread |
|---|---|---|---|---|---|---|---|---|
| Intel Xeon E5462 | 44.3 | 20.5 | 61.2 | 32 | 26.9 | 36.5 | 59 | 23.4 |
| AMD Ryzen 9 7950X3D Compare | 96 | 98.6 | 92.4 | 97 | 95.7 | 84.6 | 14.5 | 92.9 |
| SMC EPYC 9555P Compare | 99.3 | 77.2 | 96.8 | 89.6 | 99.4 | 0 | 0.4 | 85.9 |
| HP Xeon 6526Y Compare | 92.1 | 77.2 | 90.8 | 79.3 | 89.9 | 0 | 2.7 | 80.5 |
| CG CHIPS GATE EPYC 6GK7443-1EX30-0XE0 1PC New 6GK7443-1EX30-0XE0 Communications Processor Compare | 94.8 | 77.2 | 84.5 | 85.1 | 93.9 | 36.5 | 5.2 | 80.4 |
| MICRO CENTER 9950X3DMAGX870ETMKWF Compare | 85.7 | 20.5 | 17.4 | 66.5 | 97 | 0 | 6.3 | 98.4 |
Price
Value & Pricing
At $130 USD on Amazon, this is a tough sell unless you already have the motherboard. The EUR pricing is all over the place, ranging from EUR 196 to EUR 367 across four listings, which is frankly absurd for a chip this old. If you're in Europe, the EUR 196 listing is the only one worth even glancing at. For the money, you're better off hunting down a used Ryzen 5 or an older Xeon E5 v2 unless you specifically need LGA 771 compatibility.
Read more
Overview
This is a museum piece that still shows up to work. The Intel Xeon E5462 is a quad-core server chip from an era when 'energy efficient' meant 65 watts and DDR2 was still hanging around. We're looking at a 2.8GHz base clock, 12MB of L2 cache, and a socket that's been dead for over a decade. But here's the thing: it's cheap, it's reliable, and for a very specific kind of homelab tinkerer, it's still got a pulse.
Common Questions
Q: Can I use this in a regular desktop motherboard?
No. LGA 771 is a server socket. You'd need a specific server board or one of those sketchy LGA 771 to LGA 775 adapter stickers, and even then, BIOS support is hit or miss.
Q: Is this good for a home NAS or Plex server?
It'll work for basic file serving and light transcoding, but don't expect 4K Plex streams. The single-thread score of 2,065 means it'll struggle with anything CPU-intensive. Fine for a backup box, not for a media powerhouse.
Q: Does it really support DDR4?
No, that's a spec sheet error. This chip runs DDR2 with ECC. If you see DDR4 listed anywhere, it's wrong. Plan for DDR2, which is cheap but slow and getting harder to find in large capacities.
Who Should Skip This
If you're building a new server or upgrading an existing one for actual work, skip this entirely. Go grab a used Xeon E5 v2 or a Ryzen 5 instead. You'll get better performance, newer motherboards, and actual DDR4 support. This chip is for collectors and people with very specific legacy hardware needs, not for anyone who wants a smooth experience.
Verdict
Buy this only if you have a specific retro server project or an existing LGA 771 board that needs a cheap upgrade. For everyone else, save your money and get something newer. The E5462 is a fun piece of history, but it's not a practical daily driver in 2024.
Usage Scores
- Overall28.7
- AI/LLM29.3
- Budget25.9
- Gaming12.8
- Server33.2
- Efficiency18.7
- Productivity30.8