AMD Ryzen 7 1700 vs Intel Core i7-3960X Comparison

FAQ

Q: Which processor delivers the higher multi-core Cinebench R15 score?

A: The AMD Ryzen 7 1700 scores 1414 in Cinebench R15 multi-core, while the Intel Core i7-3960X scores 722. The Ryzen 7 1700 wins by a 48.9% margin in this test.

Q: How do the two chips compare in single-core performance?

A: The Ryzen 7 1700 leads in single-core workloads across all recorded benchmarks. In Cinebench R15 single-core, it scores 147 versus 102 for the i7-3960X, a 30.6% advantage. In Geekbench single-core, the Ryzen scores 1023 versus 657, a 35.8% lead.

Q: What is the average benchmark score for each processor in the database?

A: The Intel Core i7-3960X has an average benchmark score of 2037, while the AMD Ryzen 7 1700 averages 2015. Both sit at the 45th percentile among all CPUs in the database, meaning they occupy nearly identical overall performance tiers despite vastly different architectural generations.

Q: Which processor supports ECC memory?

A: The AMD Ryzen 7 1700 supports ECC memory, while the Intel Core i7-3960X does not. This is a notable feature difference for users who prioritize data integrity in workstation or server-like scenarios.

Q: How do the memory bandwidth specifications differ?

A: The Intel Core i7-3960X uses quad-channel DDR3 memory with a theoretical bandwidth of 51.2 GB/s. The AMD Ryzen 7 1700 uses dual-channel DDR4 memory with a theoretical bandwidth of 42.7 GB/s, which is lower on paper but paired with a newer memory standard.

Q: What are the release dates and production statuses?

A: The Intel Core i7-3960X was released on November 13th, 2011, and is end-of-life. The AMD Ryzen 7 1700 was released on March 1st, 2017, and remains active in production.

The Verdict

The benchmark data paints a clear picture: the AMD Ryzen 7 1700 wins every recorded head-to-head test, taking 4 out of 4 victories with no wins for the Intel Core i7-3960X. The Ryzen 7 1700 is the superior choice for any workload represented in the database, particularly multi-threaded rendering and general compute tasks. The largest margin comes in Cinebench R15 multi-core, where the Ryzen 7 1700 leads by 48.9%, scoring 1414 versus 722. The smallest margin is in Cinebench R15 single-core, still a decisive 30.6% lead for the AMD part.

The Intel Core i7-3960X, despite being an Extreme edition part from 2011, does not close the gap in any measured metric. Its average benchmark score of 2037 is marginally higher than the Ryzen 7 1700's 2015, but this is within the noise of the nearest rival comparisons, both sitting at the 45th percentile. The Ryzen 7 1700 offers more cores (8 versus 6), more threads (16 versus 12), a smaller process node (14 nm versus 32 nm), and a dramatically lower TDP (65 watts versus 130 watts), all while delivering superior performance in every benchmark.

For users building a system today, the Ryzen 7 1700 is the obvious pick based on performance alone. It is also active in production, whereas the i7-3960X is end-of-life, which has implications for availability and long-term support. The i7-3960X may appeal only to those with legacy Socket 2011 platforms who cannot upgrade the motherboard, but from a pure performance standpoint, the data does not favor it.

Head-to-Head Benchmarks

The recorded head-to-head results show a complete sweep for the AMD Ryzen 7 1700. In Cinebench R15 multi-core, the Ryzen 7 1700 scores 1414 against the i7-3960X's 722, a delta of 48.9% in favor of the AMD chip. This is the largest performance gap in the dataset and reflects the Ryzen's advantage of 8 cores and 16 threads versus 6 cores and 12 threads. The multi-threaded rendering workload scales almost linearly with core count, and the newer Zen architecture extracts more instructions per clock from each core as well.

In Cinebench R15 single-core, the Ryzen 7 1700 scores 147 versus 102 for the Intel chip, a 30.6% advantage. This is a notable result because single-core performance is often where older architectures can still compete, but here the i7-3960X's Sandy Bridge design from 2011 is clearly outclassed by Zen from 2017. The 45-point gap in raw score translates to a substantial real-world difference in lightly threaded applications.

Geekbench multi-core shows the Ryzen 7 1700 scoring 5475 against 3193 for the i7-3960X, a 41.7% lead. This benchmark exercises a mix of integer and floating-point workloads, and the Ryzen 7 1700's combination of more cores and a newer microarchitecture proves decisive. The Geekbench single-core result is also lopsided: 1023 versus 657, a 35.8% margin. The i7-3960X's 657 single-core score is less than two-thirds of the Ryzen's, indicating that even at similar clock speeds, the architectural efficiency of Zen far exceeds Sandy Bridge.

The deltas are consistent across all four tests, ranging from 30.6% to 48.9%, all in favor of the AMD processor. There is no test where the Intel part comes close, and the i7-3960X does not win a single recorded head-to-head benchmark. The average benchmark scores in the database tell a similar story: 2037 for the i7-3960X and 2015 for the Ryzen 7 1700, a difference of only 1.1%, but this aggregate includes a broader set of workloads and does not reflect the specific head-to-head tests where the Ryzen dominates.

Specification Differences

The two processors differ in nearly every core specification. The Intel Core i7-3960X has 6 cores and 12 threads, while the AMD Ryzen 7 1700 has 8 cores and 16 threads, a 33% increase in both core and thread counts. Base clocks differ: the i7-3960X runs at 3.30 GHz base and 3.90 GHz boost, while the Ryzen 7 1700 runs at 3.00 GHz base and 3.70 GHz boost. Despite the lower clocks, the Ryzen 7 1700 achieves higher benchmark scores due to its architectural efficiency.

Power consumption is a major differentiator. The i7-3960X has a TDP of 130 watts, while the Ryzen 7 1700 has a TDP of 65 watts, exactly half. This means the Ryzen delivers superior performance while drawing significantly less power, a signal of the efficiency gains from moving from 32 nm to 14 nm process technology.

Memory support and bandwidth also differ. The i7-3960X uses DDR3 memory with a quad-channel bus and 51.2 GB/s theoretical bandwidth. The Ryzen 7 1700 uses DDR4 memory with a dual-channel bus and 42.7 GB/s theoretical bandwidth. Despite the lower bandwidth on paper, the newer DDR4 standard and the Zen memory controller deliver competitive real-world performance. The Ryzen 7 1700 also supports ECC memory, which the i7-3960X does not.

The sockets are incompatible: the i7-3960X uses Intel Socket 2011, while the Ryzen 7 1700 uses AMD Socket AM4. The PCIe configurations differ as well, with the i7-3960X offering Gen 3 with 40 lanes (CPU only) versus the Ryzen 7 1700's Gen 3 with 16 lanes (CPU only). The i7-3960X has a higher lane count, which may matter for multi-GPU configurations, but the Ryzen's 16 lanes are sufficient for most desktop workloads.

The launch MSRP for the i7-3960X was $990, while the Ryzen 7 1700 launched at $329. Both processors have unlocked multipliers, allowing overclocking. The i7-3960X is end-of-life and was released in 2011, whereas the Ryzen 7 1700 is active and was released in 2017.

Architecture Differences

The architectural gap between these two processors spans five years and two fundamentally different design philosophies. The Intel Core i7-3960X is built on Sandy Bridge-E, a 32 nm process from Intel, with a die size of 435 mm² and 2,270 million transistors. It uses the Sandy Bridge microarchitecture, which was designed for high clock speeds and strong single-thread performance in its era. The chip is part of the Core i7 Extreme family and sits on Intel Socket 2011, a platform intended for high-end desktop and entry-level workstation use.

The AMD Ryzen 7 1700 is built on the Zen microarchitecture, manufactured on a 14 nm process by GlobalFoundries, with a die size of 213 mm² and 4,800 million transistors. This is a much denser design, packing more than double the transistor count into roughly half the die area. Zen introduced simultaneous multithreading (SMT) that was more efficient than previous AMD designs, and it brought a significant improvement in instructions per clock (IPC) over prior AMD cores. The Ryzen 7 1700 is part of the Ryzen 1000 series (Summit Ridge) and uses AMD Socket AM4.

Cache hierarchies differ notably. The i7-3960X has 64 KB of L1 cache per core, 256 KB of L2 per core, and a shared 15 MB L3 cache. The Ryzen 7 1700 has 96 KB of L1 per core, 512 KB of L2 per core, and a shared 16 MB L3 cache. The Ryzen's larger per-core L1 and L2 caches, combined with a slightly larger L3, contribute to its higher single-thread performance despite lower clock speeds.

The process node difference is stark: 32 nm for Intel versus 14 nm for AMD. This is the primary driver of the TDP difference (130 watts versus 65 watts) and allows the Ryzen 7 1700 to run cooler and more efficiently. The transistor counts reflect the density improvement: 2,270 million on 435 mm² versus 4,800 million on 213 mm². The Ryzen 7 1700 integrates more than twice as many transistors in half the area, enabling the 8-core design.

Both processors lack integrated graphics, so neither offers an iGPU for display output. Both have unlocked multipliers for overclocking. The Intel part supports quad-channel DDR3 memory, while the AMD part supports dual-channel DDR4. The Intel part has 40 PCIe Gen 3 lanes (CPU only), while the AMD part has 16 PCIe Gen 3 lanes (CPU only), reflecting the i7-3960X's positioning as a high-end platform part versus the Ryzen 7 1700's mainstream desktop orientation.