Intel Core i5-6600T vs Intel Core i7-970 Comparison

FAQ

Q: Which CPU wins in multi-core Cinebench R23?

A: The Intel Core i7-970 scores 5577 versus 4745 for the Intel Core i5-6600T, a 17.5% advantage for the i7-970.

Q: Which CPU has the higher boost clock?

A: The i5-6600T boosts to 3.50 GHz, while the i7-970 boosts to 3.47 GHz. The i5-6600T holds a tiny 0.03 GHz edge in peak frequency.

Q: What is the TDP difference between the two?

A: The i7-970 has a TDP of 130 watts, while the i5-6600T has a TDP of 35 watts. The i5-6600T consumes significantly less power on paper.

Q: Which CPU supports more memory channels?

A: The i7-970 uses triple-channel DDR3 memory, while the i5-6600T uses dual-channel DDR3 or DDR4. The i7-970 has the wider memory bus.

Q: Do both CPUs have integrated graphics?

A: No. The i7-970 has no integrated graphics, while the i5-6600T includes UHD Graphics 530.

Q: How do their average benchmark scores compare?

A: The i7-970 has an average benchmark score of 1613, and the i5-6600T has 1563. Both sit at the 39th percentile among all CPUs.

Architecture Differences

The Intel Core i7-970 and Intel Core i5-6600T represent two different design eras within Intel's desktop lineup. The i7-970 belongs to the Westmere architecture, codenamed Gulftown, built on a 32 nm process node. It packs 1,170 million transistors across a 239 mm² die. The i5-6600T is a Skylake part, fabricated on Intel's 14 nm process with a die size of 177 mm². The process shrink from 32 nm to 14 nm is substantial, though the i7-970's larger die and higher transistor count reflect its more complex core configuration.

Core counts differ significantly. The i7-970 provides 6 physical cores with 12 threads via Hyper-Threading. The i5-6600T provides 4 physical cores and 4 threads, with no multi-threading support. This gives the i7-970 a 50% advantage in core count and a 200% advantage in thread count. Cache hierarchies also differ: both CPUs share 64 KB of L1 per core and 256 KB of L2 per core, but the i7-970 has 12 MB of shared L3 cache versus 6 MB on the i5-6600T. That is a 6 MB difference in favor of the older chip.

Memory support diverges as well. The i7-970 runs DDR3 through a triple-channel memory bus. The i5-6600T supports both DDR3 and DDR4 through a dual-channel bus, with a recorded memory bandwidth of 34.1 GB/s. The i7-970 has no listed memory bandwidth figure. PCIe generations differ: the i7-970 supports Gen 2, while the i5-6600T supports Gen 3 with 16 lanes on the CPU. Integrated graphics are present only on the i5-6600T, which includes UHD Graphics 530; the i7-970 has none.

Socket compatibility separates these CPUs entirely. The i7-970 uses Intel Socket 1366, while the i5-6600T uses Intel Socket 1151. Neither processor has an unlocked multiplier, and both are marked end-of-life. Release dates are far apart: the i7-970 launched in July 2010, and the i5-6600T arrived in July 2015, five years later.

Head-to-Head Benchmarks

The recorded Cinebench results show a consistent pattern: the Intel Core i7-970 wins every benchmark in the comparison, with margins ranging from 17.5% to 17.9%. The narrowest gap appears in Cinebench R23 multi-core, where the i7-970 scores 5577 against 4745 for the i5-6600T, a 17.5% lead. The widest margins occur in single-core tests at 17.9%.

In Cinebench R15, the i7-970 scores 562 multi-core versus 478 for the i5-6600T, a 17.6% difference. The single-core R15 result is 79 versus 67, also a 17.6% gap. Moving to R20, the multi-core scores are 2342 versus 1992, again 17.6%, while single-core shows 330 versus 280, a 17.9% margin. The R23 single-core test repeats that 17.6% delta at 787 versus 669.

These results are notable because the i5-6600T has the higher boost clock at 3.50 GHz against 3.47 GHz. Despite that small frequency advantage, the i7-970 outperforms it in every recorded test. The i7-970's additional cores and threads appear to drive its multi-core wins. For single-core performance, the i7-970's older architecture still manages to edge out the newer Skylake part, which suggests that the i7-970's higher base clock of 3.20 GHz versus 2.70 GHz plays a role. The i7-970 wins all 6 head-to-head benchmarks, while the i5-6600T wins none.

Average benchmark scores reinforce the picture. The i7-970 averages 1613, which places it in the same percentile as the i5-6600T at 39, but the raw average is 50 points higher. The i7-970's nearest rivals include the Intel Core i7-10610U at 1611 (0.2% behind) and the Intel Core i3-9100T at 1620 (0.5% ahead). The i5-6600T sits near the Intel Core i3-8300 at 1564 (0.1% behind) and the AMD Ryzen 3 1300X at 1562 (0.1% ahead). Both CPUs occupy a similar performance tier overall, but the i7-970 consistently leads in the direct comparison.

Specification Differences

| Specification | Intel Core i7-970 | Intel Core i5-6600T |

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

| Cores | 6 | 4 |

| Threads | 12 | 4 |

| Base clock | 3.20 GHz | 2.70 GHz |

| Boost clock | 3.47 GHz | 3.50 GHz |

| TDP | 130 W | 35 W |

| Socket | Intel Socket 1366 | Intel Socket 1151 |

| Architecture | Westmere | Skylake |

| Process node | 32 nm | 14 nm |

| Die size | 239 mm² | 177 mm² |

| L3 cache | 12 MB (shared) | 6 MB (shared) |

| Memory support | DDR3 | DDR3, DDR4 |

| Memory bus | Triple-channel | Dual-channel |

| Memory bandwidth | Not recorded | 34.1 GB/s |

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

| Integrated graphics | None | UHD Graphics 530 |

| Launch MSRP | Not recorded | $213 |

| Part number | SLBVF | SR2L9 |

The i7-970 leads in core count, thread count, base clock, L3 cache, memory channel width, and die size. The i5-6600T leads in boost clock, TDP efficiency, process node, memory flexibility, PCIe generation, and integrated graphics. The i7-970 has no listed launch MSRP, while the i5-6600T carries a launch MSRP of $213.

The Verdict

The data points to a clear performance winner: the Intel Core i7-970 takes all six head-to-head benchmarks, with a minimum margin of 17.5%. Its 6-core, 12-thread configuration and 12 MB of L3 cache give it a structural advantage over the 4-core, 4-thread i5-6600T. The i7-970 also holds a higher base clock of 3.20 GHz versus 2.70 GHz, which helps in both multi-core and single-core workloads.

However, the i5-6600T is not without merits. Its TDP of 35 watts is dramatically lower than the i7-970's 130 watts, making it a far more power-efficient choice for constrained systems. It also offers modern platform features: DDR4 support, PCIe Gen 3, and integrated graphics. The i7-970 requires a discrete GPU and an older Socket 1366 platform.

The percentile data shows both CPUs sit at the 39th percentile among all processors, meaning they belong to the same general performance class despite the i7-970's consistent benchmark wins. The i5-6600T's average score of 1563 is only 50 points below the i7-970's 1613, a 3.1% difference in average terms.

For raw performance, the i7-970 is the pick. For platform modernity and power efficiency, the i5-6600T is the pick. The choice hinges on whether the user prioritizes benchmark results or operational characteristics.

Where Each One Wins

Intel Core i7-970 wins in: multi-threaded rendering workloads, as shown by its 17.5% lead in Cinebench R23 multi-core and 17.6% lead in R15 and R20 multi-core. It also wins all single-core tests by 17.6% to 17.9%, meaning it is faster in both lightly-threaded and heavily-threaded tasks. Its 12 MB L3 cache and triple-channel memory bus provide additional headroom for data-intensive applications. The higher base clock of 3.20 GHz contributes to its consistent edge.

Intel Core i5-6600T wins in: power-constrained environments. Its 35 W TDP is 95 watts lower than the i7-970's 130 W, making it suitable for compact or thermally limited builds. It offers integrated UHD Graphics 530, which eliminates the need for a separate GPU in basic display tasks. The i5-6600T supports both DDR3 and DDR4 memory, giving platform flexibility. Its PCIe Gen 3 interface with 16 CPU lanes provides faster connectivity for modern expansion cards. The boost clock of 3.50 GHz is marginally higher, though this does not translate into benchmark wins in the recorded data.

The i5-6600T also carries a launch MSRP of $213, which is recorded, while the i7-970 has no recorded launch price. The i5-6600T's newer 14 nm process node and smaller 177 mm² die suggest better manufacturing efficiency, though the i7-970's larger 239 mm² die accommodates more cores and cache.