Intel A10-Series A10-5800B 4-core Socket FM2

The AMD A10-5800B is a 2012-era FM2 desktop CPU with 4 cores, 4 threads, and a 4.2GHz boost clock. It's fine for keeping an old FM2 system alive at the US price of $68, but the performance is firmly stuck in the past. Unless you have a specific FM2 board to revive, skip it and buy something modern.

Let's talk raw numbers. The A10-5800B scores 3,381 in PassMark single-thread and 25,703 in multi-thread. In practical terms, single-thread is what makes everyday tasks feel snappy, and 3,381 is firmly in "fine for basic stuff" territory. Web browsing, office apps, light photo work, all doable. But fire up anything that leans on modern instruction sets or wants real per-core grunt and you'll feel the age immediately. The 4.2GHz boost clock helps, but Piledriver cores were never known for strong IPC, and that's the ceiling here.

Multi-thread at 25,703 sounds more impressive until you remember this is a 4-core, 4-thread part with no SMT. Modern 6-core chips clear 30,000+ without breaking a sweat. The 32MB of L3 cache is actually generous for the era, and it helps smooth out some workloads. But the platform is the real bottleneck. DDR4 support is listed, which is odd because FM2 boards were DDR3-only in practice. We're going off the spec sheet we were given, but if you're shopping for this chip, check your motherboard's memory compatibility carefully. PCIe 4.0 is also listed, which would be unusual for FM2. Trinity launched with PCIe 2.0. Either the spec data is wrong or someone's being very optimistic. Either way, don't expect modern NVMe speeds on this platform.

Stacking the A10-5800B against the Ryzen 5 9600X is almost unfair. The 9600X is a modern 6-core, 12-thread chip on AM5 with DDR5 and PCIe 5.0. It scores roughly triple the single-thread performance and double the multi-thread. But it also costs several times more, so they're not really competing. The more interesting comparison is against other old workstation parts like the Dell Xeon E5-2637 V2. That Xeon is also ancient, but it brings more cores and ECC support to the table, which matters if you're running a home server. The A10-5800B actually beats it on single-thread, which tells you how weak that Xeon's per-core performance is.

The In Pentium G4400T is probably the closest real-world alternative. It's a dual-core Skylake chip from 2015 that sips power and runs on cheap LGA1151 boards. The G4400T has better single-thread performance despite having half the cores, and used LGA1151 boards are far easier to find than FM2 boards in good condition. The be quiet! Ryzen 3 Dark Rock Pro 5 isn't even a CPU, it's a cooler, so that's a weird competitor listing. And DAKboard CPU v4 is a niche embedded thing. The takeaway: if you need cheap and functional, the G4400T route is often smarter. If you need FM2 specifically, the A10-5800B is one of your only new options.

At $68 USD, the A10-5800B is a defensible purchase if you have an FM2 board that needs a working CPU and you don't want to spend real money. It's cheaper than a night out and it'll keep an old office PC or media box running. But at €141 EUR, you're entering territory where a used Ryzen 3 or even a budget Intel chip makes infinitely more sense. The value proposition collapses completely at that price. For the Japanese listing at ¥17,256, you're paying a premium for scarcity, not performance. If you can find this chip for under $70 and you have a specific FM2 system to revive, fine. Otherwise, put the money toward a platform that isn't a decade old.

The AMD A10-5800B is one of those chips that makes you do a double take when you see it listed new in 2025. This is a Trinity-era APU from 2012, built for Socket FM2 boards, and it's still floating around as an OEM part. You're looking at 4 cores, 4 threads, a 3.8GHz base clock with a 4.2GHz turbo, and a 65W TDP. It's a desktop CPU from a completely different era of AMD, before Ryzen existed and before the company turned things around.

We pulled the numbers from our database and honestly, the percentile rankings surprised us. This chip lands in the 92nd percentile for efficiency and 86th for single-thread performance among all CPUs we track. But context matters here. Those rankings include a lot of ancient and low-power parts, so being near the top of a pile of decade-old silicon isn't the flex it sounds like. The PassMark scores tell the real story: 3,381 single-thread and 25,703 multi-thread. For reference, a modern budget chip like the Ryzen 5 9600X absolutely demolishes those numbers.

Pricing is all over the place depending on where you look. We see it at $68 USD in the US, €141 EUR in France, and ¥17,256 JPY in Japan. That spread alone tells you this is leftover inventory being cleared out, not a product with a real market position. If you're searching for a cheap FM2 CPU to keep an old system alive, the US price is tolerable. The European price is a joke for what you get.

Skip the A10-5800B if you're building a new system, period. You'd be locking yourself into a dead platform with no upgrade path, DDR3 memory, and PCIe 2.0. If you need a budget CPU for a new build, look at a used Ryzen 3 or Ryzen 5, or an Intel i3-12100. If you want a low-power home server, a used Xeon E5 or a modern N100 mini PC will run circles around this chip while using less power. And if you're in Europe seeing that €141 price, just close the tab. That money gets you a far better used CPU and motherboard combo.

Should you buy the AMD A10-5800B? Only if you have a very specific reason. That reason is almost always "I have an FM2 motherboard that needs a working CPU and I don't want to replace the whole system." In that scenario, at the US price of $68, it's a reasonable stopgap. It'll handle basic desktop duties, light browsing, and office work without complaint. The 65W TDP means it won't cook your case or spike your power bill.

For everyone else, no. This is a 2012 chip being sold as new old stock. The performance is what it is, and no amount of overclocking will make Piledriver competitive with even a $100 modern CPU. If you're building a budget system from scratch, buy a used Ryzen or a cheap Intel 12th-gen part. If you're in Europe and seeing that €141 price, walk away. That's collector pricing for a chip that belongs in a recycling bin or a retro build, not a daily driver.