AMD PRO A8-9600 vs Intel Core i7-875K Comparison

# AMD PRO A8-9600 vs Intel Core i7-875K: Benchmark Database Analysis

The AMD PRO A8-9600 and the Intel Core i7-875K occupy different corners of the desktop CPU market, and the recorded data reflects that clearly. The Intel part, a Lynnfield quad-core with eight threads, delivers a generation-defining feature set for its time, including an unlocked multiplier. The AMD Bristol Ridge part, also a quad-core, counters with newer architecture, integrated graphics, and a more modern platform. Across the five shared benchmark tests in the database, the AMD PRO A8-9600 wins every single head-to-head contest, but the margins are consistently narrow, ranging from just over 3% to 3.6%. This is not a case of one chip dominating another; it is a case of the newer, more efficient part taking a narrow but consistent lead in every recorded workload.

FAQ - Frequently Asked Questions

Q: How does the AMD PRO A8-9600 compare to the Intel Core i7-875K in raw processing power?

A: Based on the aggregate benchmark average, the AMD part holds a slight edge. The AMD PRO A8-9600 records an average score of 971 across all tests, while the Intel Core i7-875K sits at 984. This is a fractional difference, less than 1.4% separating the two parts. In single-threaded workloads, the gap is also consistent: the AMD leads by roughly 3.3% to 3.6% in the Cinebench R20 and R23 single-core tests.

Q: Which processor has the higher core count?

A: Both are quad-core parts. The Intel Core i7-875K supports eight threads via Hyper-Threading, whereas the AMD PRO A8-9600 has four threads. This gives the Intel part a logical advantage in heavily threaded content, though the database bench results do not always reflect this.

Q: What are the architectural differences?

A: The Intel Core i7-875K is built on the Nehalem architecture (codename Lynnfield) using a 45nm process, with 774 million transistors. The AMD PRO A8-9600 is an Excavator core from Bristol Ridge, built on a 28nm process with 3.1 billion transistors. The AMD features integrated Radeon R7 graphics, which the Intel part lacks.

Q: What does the benchmark score say about real-world use?

A: The data indicates that the AMD part is consistently around 3% to 4% faster in both multi-thread and single-thread Cinebench tests. For example, in Cinebench R15 multi-core, the AMD PRO A8-9600 scores 284 versus 275 for the Intel, a 3.2% lead. This suggests the newer AMD design extracts more performance per clock in these recorded workloads.

Architecture Differences

The two processors represent two distinct design schools. The Intel Core i7-875K is a 45nm Nehalem part, code name Lynnfield. It packs four cores with eight threads, and it runs with a base clock of 2.93GHz and a boost of 3.60GHz. It uses the older Intel Socket 1156 platform and supports dual memory channels. Its cache arrangement is a 64KB L1 per core, 256KB L2 per core and 8MB of shared L3, an arrangement designed to feed the high-throughput cores.

The AMD PRO A8-9600 is a much newer design, built on a 28nm process at GlobalFoundries. It is also a quad-core chip, but it has only four threads, meaning the four cores do not use simultaneous multithreading. The base clock is 3.10GHz, boosting to 3.40GHz. It supports DDR4 memory with a dual-channel bus, and uses the AMD Socket AM4 platform. The cache block is 320KB L1, 2MB L2 and has no L3 cache. Its integrated Radeon R7 GPU is the standout feature, a capability the Intel chip simply does not have.

The manufacturing story is different. Intel uses 774 million transistors on a 296mm² die. AMD integrates 3.1 billion transistors on a 250mm² die. The Intel part is a fully unlocked multiplier (the "K" designation) which makes it attractive for overclocking, while the AMD part is not multiplier-unlocked and is a standard desktop part.

Head-to-Head Benchmarks

Looking at the direct benchmark comparisons in the database, the AMD PRO A8-9600 wins all five recorded tests. The margins are consistent, though small. In Cinebench R15 all-core, the AMD PRO A8-9600 scores 284, the Intel Core i7-875K scores 275. That is a 3.2% lead for the AMD chip. In the same test, in Cinebench R20 all-core, the AMD part scored 1184 versus 1146, a margin of 3.2%. Single-core performance in Cinebench R20 was 167 for the AMD part versus 161 for the Intel part, giving the AMD a 3.6% lead.

The same pattern repeats in the newer tests. In Cinebench R23 multi-core, AMD scored 2820, Intel 2729, a 3.2% gap. In the single-core version, AMD scored 398, Intel 385, a 3.3% difference. Across all tests, the AMD PRO A8-9600 never lost. The biggest delta was 3.6% in the Cinebench R23 single-core test. The smallest was 3.2%, recorded in the Cinebench R20 multi-core test. These are close to each other; the data does not point to a single workload where the Intel part clearly comes ahead.

Specification Differences

| Specification | Intel Core i7-875K | AMD PRO A8-9600 |

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

| Cores / Threads | 4 / 8 | 4 / 4 |

| Base Clock | 2.93 GHz | 3.10 GHz |

| Boost Clock | 3.60 GHz | 3.40 GHz |

| L3 Cache | 8MB shared | None |

| Process Node | 45 nm | 28 nm |

| Transistors | 774 million | 3,100 million |

| Memory Support | DDR3 | DDR4 |

| Integrated Graphics | None | Radeon R7 |

| Socket | Intel Socket 1156 | AMD Socket AM4 |

| PCIe | Gen 2, 16 lanes | Gen 3, 8 lanes |

| Release | 2010-05-30 | 2016-10-03 |

The specification sheets show two very different design philosophies. The Intel part has the older DDR3 memory interface, a larger L3 cache, and a more generous PCIe lane allocation (16 Gen 2 lanes). The AMD part is newer, adapts to DDR4, has integrated graphics, and uses a Gen 3 PCIe link with 8 lanes. The Intel chip has a higher boost clock, but the AMD chip has a higher base clock.

Where Each One Wins

Heavily threaded workloads: Here the Intel i7-875K has the structural benefit, with eight threads against the four threads of the AMD PRO A8-9600. However, in the recorded benchmarks, which are essentially Cinebench-based, the AMD part still wins. The real edge appears in single-threaded workloads, where the AMD PRO A8-9600 was 3.3% (Cinebench R23 single-core) to 3.6% (Cinebench R20 single-core) faster.

Platform features: The AMD PRO A8-9600 has the clear advantage. Its integrated Radeon R7 graphics is a full GPU, which makes a separate graphics card unnecessary in a basic desktop. It also supports DDR4 memory and uses the modern AM4 socket, which gives a more current upgrade path. The Intel part, on the other hand, is tied to DDR3 and the older LGA1156 platform.

Legacy features: The Intel Core i7-875K retains the unlocked multiplier, a feature designed for enthusiasts. The AMD PRO A8-9600 does not come with an unlocked multiplier. For users who value a legacy overclocking platform, the Intel part is the only one to offer that.

The Verdict

The data is homogeneous: the AMD PRO A8-9600 wins every benchmark in the head-to-head comparison. The margins are uniform, ranging from 3.2% to 3.6% in favor of the AMD part. It is not a dramatic victory, but a consistent one. The Intel Core i7-875K is the older, more feature-rich part in terms of thread count and an unlocked multiplier, and it has a higher boost clock. The AMD PRO A8-9600 is the modern, more efficient part with a smaller process node, DDR4 support, and integrated graphics capabilities.

For pure performance based on the recorded aggregate benchmark score, the AMD PRO A8-9600 is the safer recommendation. It wins all five direct comparisons and provides a newer feature base. The Intel Core i7-875K remains interesting only if the unlocked multiplier and the higher thread count are the decisive features, and even then, the recorded performance data indicates the AMD part still wins in the measured workloads.

The AMD PRO A8-9600 is the better buy, according to the database, if the task is primarily about running the recorded workloads with no extra features. Its lead is slim, but it is a lead in every single recorded test. The Intel Core i7-875K is a niche product from an older platform, and the AMD PRO A8-9600 is a well-rounded chip that combines a competitive CPU with a modern platform and integrated graphics. For a general-purpose desktop processor, the AMD PRO A8-9600 is the better performing processor according to the data.