AMD A10 PRO-7800B vs AMD A8-6600K Comparison

Head-to-Head Benchmarks

The recorded data shows a narrow but consistent victory for the AMD A8-6600K across both benchmark tests. In Geekbench multicore, the A8-6600K posts a score of 1076 against the A10 PRO-7800B’s 1055, a 2% advantage. The single-core result follows the same pattern, with the A8-6600K scoring 451 versus the A10 PRO-7800B’s 436, a 3.4% lead. These are not dramatic margins, but they are uniform: the A8-6600K wins both head-to-head comparisons, giving it a 2-0 record in the database’s direct matchup.

The average benchmark score reinforces this ordering. The A8-6600K averages 764 across all recorded tests, while the A10 PRO-7800B averages 746. That 18-point gap places the A8-6600K alongside Intel’s Core i7-3537U, which scores 766 and sits only 0.3% behind. The A10 PRO-7800B, meanwhile, lands exactly on par with Intel’s Core i5-4200U, both at 746. The A10 PRO-7800B also sits within 0.2% of the older Intel Core i5-750 and 0.6% ahead of the Intel Xeon E5520. Both AMD chips occupy the 20th percentile of all CPUs in the database, meaning neither is a standout in absolute terms, but the A8-6600K consistently finishes slightly higher.

The single-core delta is the more meaningful differentiator. A 3.4% lead in single-threaded work suggests the A8-6600K’s higher clock speeds translate directly into better responsiveness for lightly threaded applications. The multicore gap, at 2%, is smaller, indicating that the A10 PRO-7800B’s newer architecture partially compensates for its lower clocks when all cores are active. Still, the data does not show any test where the A10 PRO-7800B pulls ahead. It is a clean sweep, albeit a modest one.

Architecture Differences

The two processors come from different generations of AMD’s desktop lineup, and the architectural gap is visible in several key areas. The A8-6600K uses the Piledriver architecture on the Richland codename, built on a 32 nm process at GlobalFoundries. The A10 PRO-7800B uses the newer Steamroller architecture on the Kaveri codename, built on a 28 nm process, also at GlobalFoundries. The node shrink is significant: 32 nm to 28 nm, which helps explain the A10 PRO-7800B’s much lower power envelope.

Transistor counts tell a striking story. The A8-6600K packs 1,303 million transistors on a 246 mm² die. The A10 PRO-7800B crams 2,411 million transistors onto a nearly identical 245 mm² die. That is roughly 85% more transistors in the same physical space, enabled by the denser 28 nm process. The die sizes are effectively identical, differing by just 1 mm², so the A10 PRO-7800B is doing far more work per square millimeter.

Clock speeds favor the A8-6600K. It runs at a 3.90 GHz base clock and boosts to 4.20 GHz. The A10 PRO-7800B starts lower at 3.50 GHz and boosts to 3.90 GHz. The A8-6600K also has an unlocked multiplier, while the A10 PRO-7800B’s multiplier is locked, meaning the former allows manual overclocking while the latter does not.

Cache configurations are similar but not identical. Both chips have 4 MB of L2 cache, but the L1 cache differs: the A8-6600K has 192 KB, while the A10 PRO-7800B has 256 KB. Neither chip features L3 cache or 3D V-Cache.

Memory support shows a modest upgrade for the A10 PRO-7800B. Both support DDR3 in dual-channel mode, but the A10 PRO-7800B achieves 34.1 GB/s of memory bandwidth versus the A8-6600K’s 29.9 GB/s. That is a 14% improvement, likely stemming from the newer memory controller. Neither supports ECC memory.

PCIe connectivity also differs. The A8-6600K uses PCIe Gen 2, while the A10 PRO-7800B steps up to PCIe Gen 3 with 16 lanes (CPU only). This gives the A10 PRO-7800B a more modern interface for discrete graphics and NVMe storage, though the practical impact depends on the rest of the system.

Integrated graphics are another generational leap. The A8-6600K ships with a Radeon HD 8570D, while the A10 PRO-7800B carries a Radeon R7. The R7 branding reflects the newer Graphics Core Next architecture and the larger transistor budget, though the database does not provide direct iGPU benchmark scores for either part.

Power consumption is a major differentiator. The A8-6600K has a 100 W TDP, while the A10 PRO-7800B draws just 65 W. That is a 35% reduction in thermal design power, achieved despite the A10 PRO-7800B having nearly double the transistors. The 28 nm process and Steamroller’s power management clearly pay dividends.

Sockets differ as well. The A8-6600K uses AMD Socket FM2, while the A10 PRO-7800B uses AMD Socket FM2+. These are not cross-compatible, so a motherboard upgrade is required to move between the two.

Release timing is also distinct. The A8-6600K launched in May 2013, while the A10 PRO-7800B arrived in July 2014, roughly 14 months later. Both are now end-of-life products, and neither has a recorded launch MSRP in the database.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD A8-6600K boosts to 4.20 GHz, while the AMD A10 PRO-7800B tops out at 3.90 GHz.

Q: Does the A10 PRO-7800B support PCIe Gen 3?

A: Yes. The A10 PRO-7800B supports PCIe Gen 3 with 16 lanes (CPU only), whereas the A8-6600K is limited to PCIe Gen 2.

Q: What is the transistor count difference between the two chips?

A: The A8-6600K has 1,303 million transistors on a 246 mm² die. The A10 PRO-7800B has 2,411 million transistors on a 245 mm² die.

Q: Can either processor use ECC memory?

A: No. Both the A8-6600K and the A10 PRO-7800B do not support ECC memory.

Q: Which chip has a lower TDP?

A: The A10 PRO-7800B has a 65 W TDP, compared to the A8-6600K’s 100 W TDP.

Q: Are the sockets interchangeable?

A: No. The A8-6600K uses AMD Socket FM2, while the A10 PRO-7800B uses AMD Socket FM2+.

The Verdict

The data points to a clear, if narrow, win for the AMD A8-6600K in raw CPU performance. It leads in both Geekbench multicore and single-core tests, with deltas of 2% and 3.4% respectively. Its average benchmark score of 764 is also higher than the A10 PRO-7800B’s 746. Users prioritizing maximum compute throughput, even by a small margin, should choose the A8-6600K.

However, the A10 PRO-7800B is not without its arguments. Its 65 W TDP versus 100 W means substantially lower power draw and heat output, which matters for compact or thermally constrained systems. It also brings a newer architecture (Steamroller versus Piledriver), a smaller 28 nm process node, a larger L1 cache (256 KB versus 192 KB), higher memory bandwidth (34.1 GB/s versus 29.9 GB/s), and PCIe Gen 3 support. The integrated Radeon R7 GPU is a generational upgrade over the Radeon HD 8570D, though the database does not quantify this advantage.

The A8-6600K is the pick for users who want the fastest CPU performance in the database’s measurements and are willing to accept a 100 W TDP. It also has an unlocked multiplier for overclocking, which the A10 PRO-7800B lacks. The A10 PRO-7800B is the pick for users who care more about efficiency, modern platform features, and a newer iGPU, and who can tolerate a roughly 2% to 3% deficit in CPU benchmarks. Given that both chips sit at the 20th percentile of all CPUs, neither is a high-performance leader; the choice comes down to whether raw clocks or platform modernity matters more.

Specification Differences

| Specification | AMD A8-6600K | AMD A10 PRO-7800B |

|---|---|---|

| Base Clock | 3.90 GHz | 3.50 GHz |

| Boost Clock | 4.20 GHz | 3.90 GHz |

| TDP | 100 W | 65 W |

| Socket | AMD Socket FM2 | AMD Socket FM2+ |

| Architecture | Piledriver | Steamroller |

| Codename | Richland | Kaveri |

| Process Node | 32 nm | 28 nm |

| Transistors | 1,303 million | 2,411 million |

| Die Size | 246 mm² | 245 mm² |

| L1 Cache | 192 KB | 256 KB |

| Memory Bandwidth | 29.9 GB/s | 34.1 GB/s |

| PCIe | Gen 2 | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | Radeon HD 8570D | Radeon R7 |

| Multiplier Unlocked | Yes | No |

| Release Date | 2013-05-31 | 2014-07-30 |

| Part Number | AD660KWOHLBOXAD660KWOA44HL | AD780BYBI44JA |