AMD Opteron 6272 vs AMD Ryzen Threadripper PRO 3975WX
These are not competitors. The Opteron 6272 is a 2011-era 16-core server chip for Socket G34 boards; the Threadripper PRO 3975WX is a 32-core, 64-thread workstation chip on sWRX8 with 128 PCIe 4.0 lanes and eight-channel DDR4. Buy the Threadripper PRO for any current build. The Opteron only makes sense to keep an old G34 server alive. The Threadripper PRO 3975WX was priced at $547.95 as of November 3, 2026; no price was given for the Opteron 6272.
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AMD Opteron 6272
AMD Opteron 6272 2.1 GHz 16-Core Processor
Choose the Opteron 6272 if you are repairing or populating an existing Socket G34 server and need a cheap 16-core drop-in.
- 16 cores on a single old server socket
- 115 W TDP is far easier to cool
- Cheap way to keep a G34 board in service
- Runs on inexpensive DDR3
What separates them
| AMD Opteron 6272 | AMD Ryzen Threadripper PRO 3975WX | |
|---|---|---|
| Cores / threads | 16 cores, 16 threads | 32 cores, 64 threads |
| Clock speed | 2.1 GHz, no listed boost | 3.5 GHz base, 4.2 GHz boost |
| L3 cache | 16 MB | 128 MB |
| Process size | 32 nm (Bulldozer-era) | 7 nm (Zen 2) |
| Socket | Socket G34 | Socket sWRX8 |
| Memory | DDR3, four channels | DDR4-3200, eight channels, registered ECC |
| PCI Express | Gen 2 | Gen 4, 128 lanes |
| TDP | 115 W |
Price history
- AMD Opteron 6272: lowest $156.00 on Nov 3 at Global One Technology.
- AMD Ryzen Threadripper PRO 3975WX: lowest $547.95 on Nov 3 at Amazon; $547.95 on Nov 6.
Prices at every store
AMD Opteron 6272
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AMD Ryzen Threadripper PRO 3975WX
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Specs compared
| Spec | AMD Opteron 6272 | AMD Ryzen Threadripper PRO 3975WX |
|---|---|---|
| Number Of Cores | 16-core | 32 |
| Clock Speed | 2.1 GHz | 3.5 GHz |
| TDP | 115 watts | 280 W |
| Cache Memory | 16 MB cache memory | — |
| Cores | — | 32 |
| Threads | — | 64 |
| Base Frequency | — | 3.5 GHz |
| Boost Clock | — | 4.2 GHz |
| Socket | — | Socket WRX8 |
| L3 Cache | — | 128 MB |
| Process Size |
What reviewers say
AMD Opteron 6272
Owner reports on Opteron 6200-series chips focus on their place in cheap multi-core home labs. They are valued for core count per dollar but criticized for slow single-thread speed and platform cost.
- PerformanceMixedOwners say 16 cores help with parallel workloads but per-core speed is slow.
- Platform costCriticisedBuyers complain that Socket G34 boards cost more than the CPU itself.
- ValuePraisedUsed prices make it one of the cheapest ways to get 16 cores.
- PowerMixed
Questions and answers
- Which is better for video rendering?
- The Threadripper PRO 3975WX, by a wide margin. It has twice the cores and threads, a 4.2 GHz boost, and 128 MB of L3 cache versus 16 MB.
- Can I use the Opteron 6272 in a Threadripper motherboard?
- No. The Opteron uses Socket G34 and the Threadripper PRO uses Socket sWRX8. They are not interchangeable.
- Which uses less power?
- The Opteron 6272 at 115 W TDP. The Threadripper PRO 3975WX is rated 280 W and needs a larger cooler and power supply.
- Is the Threadripper PRO 3975WX worth the extra cost?
- For current workstation work, yes. The Opteron is a decade-old server part with DDR3 and PCIe 2.0, so it cannot match modern performance or I/O.
- Does either chip have integrated graphics?
- No. Both need a discrete graphics card.
- Which supports ECC memory?
- The Threadripper PRO 3975WX supports registered ECC DDR4 across eight channels. The Opteron 6272 uses DDR3 on its G34 platform.
