Intel Xeon Gold 6256 12-core Socket 3647
The 4.5GHz boost clock across 12 cores makes this 14nm Xeon stand out for latency-sensitive server tasks that benefit from high single-thread speed alongside moderate multi-threading. Its 33MB L3 cache and Socket 3647 compatibility provide a straightforward upgrade path for existing 2nd Gen Xeon infrastructure. This processor is best for IT administrators refreshing legacy servers that require strong per-core performance for lightly threaded enterprise applications.
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Überblick
The 30-Second Version
A 2019 server chip at 2025 prices. Buy it used or don't buy it at all.
Pros & Cons
Vorteile
- 12 cores and 24 threads handle parallel workloads without breaking a sweat 79th
- 4.5GHz boost is genuinely high for a Xeon
- 33MB L3 cache is generous for database and virtualization tasks
- Socket 3647 means it drops into existing server infrastructure
Nachteile
- 205W TDP is a power bill waiting to happen
- Single-thread performance is near the bottom of our charts
- Price is absurd for what you get in 2025
- Platform is a dead end, no upgrade path forward
Was Besitzer sagen
The Word on the Street
Die Fakten
Performance
The multi-thread score of 7363 in PassMark lands it right in the middle of the pack, which is fine for a 12-core chip from this generation. But that single-thread score of 259 is a real letdown, sitting near the bottom of our database. The 4.5GHz boost sounds impressive until you realize modern desktop chips hit that in their sleep while sipping half the power. The 33MB of L3 cache helps with database workloads, but it can't hide the age.
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Xeon Gold |
| Model | 6256 |
| Class | server |
| Process | 14 |
Cores & Clocks
| Cores | 12 |
| Threads | 24 |
| Base Clock | 3600 |
| Boost Clock | 4500 |
Cache
| L2 Cache | 12 |
| L3 Cache | 33 MB |
Performance
| PassMark Multi | 7363 |
| PassMark Single | 259 |
Platform & Power
| Socket | Socket 3647 |
| TDP | 205 |
| Unlocked | Yes |
vs Competition
Stack this against the AMD Ryzen 7 9800X3D and it's not even close. The 9800X3D destroys it in single-thread, matches it in multi-thread with fewer cores, and sips power by comparison. Even the HPE Xeon P67080-B21 makes more sense if you're locked into enterprise hardware, since it's actually designed for current server deployments. The Xeon Gold 6256 only wins if you're trapped in a Socket 3647 ecosystem and have no budget for a platform migration.
| Spec | Intel Xeon Gold 6256 | AMD Ryzen 7 9800X3D | Dell Xeon E5-2637 V2 | SMC EPYC 9555P | D&H Core i9 BX80673I99980X | Hewlett Packard Enterprise Xeon P67080-B21 |
|---|---|---|---|---|---|---|
| Cores | 12 | 8 | 32 | 64 | 18 | 16 |
| Threads | 24 | 16 | 64 | 128 | 36 | 32 |
| Boost Clock Mhz | 4500 | 5200 | 3500 | 4400 | 4400 | 3900 |
| L3 Cache Mb | 33 | 96 | 256 | 256 | 24.75 | 37.5 |
| Tdp W | 205 | 120 | 200 | 360 | 165 | 195 |
| Socket | Socket 3647 | AM5 | Socket A/Socket 462 (PGA 462) | AMD Socket SP5 | LGA2066 | LGA 4677 |
| Integrated Graphics | - | AMD Radeon Graphics | No | - | - | No |
| Compare | Compare | Compare | Compare | Compare |
| Produkt | AI | Feature | Platform | Efficiency | Multi Thread | Nutzerresonanz | Affordability | Single Thread |
|---|---|---|---|---|---|---|---|---|
| Intel Xeon Gold 6256 | 40.6 | 79.3 | 17.9 | 33.9 | 51.4 | 61.1 | 1.6 | 8.6 |
| AMD Ryzen 7 9800X3D Compare | 91.3 | 98.5 | 95.2 | 88.1 | 88.7 | 96.5 | 23.6 | 94.7 |
| Dell Xeon E5-2637 V2 Compare | 99.1 | 90.9 | 76.4 | 97.4 | 99.1 | 0 | 88.4 | 88.7 |
| SMC EPYC 9555P Compare | 99.3 | 77.1 | 96.8 | 88.9 | 99.4 | 0 | 0.4 | 85.2 |
| D&H Core i9 BX80673I99980X Compare | 97.3 | 62.6 | 82.5 | 99.4 | 99.8 | 72.4 | 7.7 | 95.7 |
| Hewlett Packard Enterprise Xeon P67080-B21 Compare | 91.8 | 77.1 | 90.7 | 78.1 | 89.4 | 0 | 2.7 | 79.7 |
Preis
Value & Pricing
At roughly $3,900 USD, this is a tough sell. You're paying premium prices for a chip that gets smoked by modern desktop CPUs costing a third as much. The only reason to buy this is if you have an existing Socket 3647 server that needs a drop-in upgrade and you can find it used for way less. At retail, it's a hard pass.
Mehr erfahren
Overview
The Intel Xeon Gold 6256 is a server chip that thinks it's still 2019. Twelve cores, a 4.5GHz boost, and a 205W TDP that'll warm your server room nicely. It's built for Socket 3647 platforms, which already tells you this is a legacy upgrade path, not a fresh build. The one thing to know? You're paying workstation money for aging server silicon.
Common Questions
Q: Is the Xeon Gold 6256 good for gaming?
No. The single-thread performance is near the bottom of our charts, and games care way more about that than core count. Get a Ryzen or Core i7 instead.
Q: Can I use this in a desktop motherboard?
Only if your desktop motherboard has a Socket 3647. Spoiler: it doesn't. This needs a server board, and those aren't cheap either.
Q: Is this worth upgrading from an older Xeon in the same socket?
If you can find it used at a good price, sure. It'll give your existing server a nice multi-thread bump. But don't pay retail for it.
Who Should Skip This
If you're building a new server or workstation, skip this entirely. Grab a modern Ryzen or a current-gen Xeon instead. If you're looking for efficiency, this 205W space heater isn't it. Go get something on a newer platform that won't double as a furnace.
Verdict
Don't buy this new. If you have a Socket 3647 server that needs a CPU refresh and you find a used 6256 at a steep discount, it'll keep your existing box running. But as a new purchase in 2025, it's a relic with a premium price tag. Your money goes further almost anywhere else.
