Intel Core i7-2600 vs Intel Core i7-3615QE Comparison

The Intel Core i7-3615QE and Intel Core i7-2600 are both 4-core, 8-thread processors from Intel, but they target different segments and generations. The i7-3615QE sweeps all six head-to-head Cinebench comparisons, with wins ranging from 4.7% to 6.0%. Despite the i7-2600’s higher base and boost clocks, the newer microarchitecture of the i7-3615QE delivers superior performance in every measured workload. The i7-2600 does hold advantages in platform features, including larger shared L3 cache and a desktop-oriented socket, but the benchmark data consistently favors the mobile i7-3615QE.

Where Each One Wins

The Intel Core i7-3615QE wins every benchmark category recorded in the head-to-head comparisons. In Cinebench R15, R20, and R23, it takes both multi-core and single-core tests. The largest margin is in Cinebench R20 single-core, where it leads by 6.0%. The smallest margin is in Cinebench R15 single-core, where the advantage narrows to 4.7%. This consistent sweep across rendering workloads indicates that the i7-3615QE has a fundamental architectural edge rather than a workload-specific strength.

The Intel Core i7-2600 does not win any of the six head-to-head tests. However, its profile is not without merit. It carries 8 MB of shared L3 cache compared to 6 MB on the i7-3615QE, which can benefit data-heavy workloads that fit within the larger pool. The i7-2600 also supports DDR3 memory and PCIe Gen 3 with 16 lanes on the CPU, making it more suited for desktop builds with discrete graphics. In terms of raw compute benchmarks, though, the i7-2600 trails in every recorded test.

The i7-3615QE also holds an edge in efficiency metrics from the spec sheet. Its TDP is 45W versus 95W for the i7-2600, which is a substantial difference for systems where thermal management matters. The i7-3615QE is a mobile part with an Intel BGA 1023 socket, while the i7-2600 is a desktop part on Intel Socket 1155. This means the i7-3615QE is designed for laptops and compact systems, whereas the i7-2600 targets traditional desktop towers with more cooling headroom.

Architecture Differences

The two processors come from different generations and manufacturing nodes. The Intel Core i7-3615QE is built on Ivy Bridge architecture using a 22 nm process, while the Intel Core i7-2600 uses Sandy Bridge on a 32 nm process. The smaller 22 nm node allows the i7-3615QE to pack 1,400 million transistors into a 160 mm² die. The i7-2600, by contrast, has 1,160 million transistors on a larger 216 mm² die. This denser, more modern design contributes to the i7-3615QE’s performance lead despite lower clock speeds.

Clock speeds tell an interesting story. The i7-2600 runs at a 3.40 GHz base clock and boosts to 3.80 GHz. The i7-3615QE has a 2.30 GHz base clock and a 3.30 GHz boost. On paper, the i7-2600 should be faster in raw clock-for-clock scenarios, but the benchmark results show the opposite. The Ivy Bridge architecture in the i7-3615QE delivers higher instructions per clock, which more than compensates for the lower frequency.

Cache configurations differ as well. Both processors have 64 KB of L1 cache per core and 256 KB of L2 cache per core. The shared L3 cache, however, favors the i7-2600 with 8 MB versus 6 MB on the i7-3615QE. This extra 2 MB of shared cache is the i7-2600’s main architectural advantage, though it does not translate into benchmark wins in the tested workloads.

Integrated graphics also differ. The i7-3615QE comes with Intel HD 4000, while the i7-2600 has Intel HD 2000. The HD 4000 is a newer generation of integrated graphics, which is relevant for systems without a discrete GPU. Neither processor supports ECC memory, and both use dual-channel memory buses. The i7-2600 specifies DDR3 memory support, while the i7-3615QE does not list memory support in the data.

Head-to-Head Benchmarks

The Cinebench R15 multi-core test shows the i7-3615QE scoring 481 against the i7-2600’s 455, a 5.7% advantage. This pattern repeats across the entire Cinebench suite. In single-core R15, the i7-3615QE scores 67 versus 64, a 4.7% lead. The consistency of these margins suggests the i7-3615QE’s architectural efficiency applies equally to single-threaded and multi-threaded workloads.

Cinebench R20 results amplify the lead slightly. Multi-core scores are 2005 for the i7-3615QE and 1897 for the i7-2600, again a 5.7% difference. Single-core R20 shows the i7-3615QE at 283 and the i7-2600 at 267, which is a 6.0% gap — the largest margin in any test. This indicates that the newer architecture’s advantage grows slightly as the workload becomes more demanding.

Cinebench R23 multi-core continues the trend: 4774 for the i7-3615QE versus 4519 for the i7-2600, a 5.6% lead. Single-core R23 follows with 674 versus 638, also a 5.6% gap. Across all six tests, the deltaPct ranges from 4.7% to 6.0%, with no test where the i7-2600 comes within striking distance. The i7-3615QE wins all six head-to-head benchmarks, giving it a clean 6-0 record.

The i7-2600 also has Geekbench scores in the data — 2409 multi-core and 712 single-core — but these are not part of the head-to-head comparison, which focuses exclusively on Cinebench. For context, the i7-2600’s average benchmark score is 1370, while the i7-3615QE averages 1381. This 11-point difference in average score aligns with the Cinebench results, reinforcing the i7-3615QE’s overall superiority.

FAQ

Q: Which processor has a higher base clock speed?

A: The Intel Core i7-2600 has a base clock of 3.40 GHz, while the Intel Core i7-3615QE has a base clock of 2.30 GHz.

Q: What is the TDP difference between the two CPUs?

A: The Intel Core i7-3615QE has a TDP of 45W, while the Intel Core i7-2600 has a TDP of 95W. The i7-3615QE draws significantly less power.

Q: How much L3 cache does each processor have?

A: The Intel Core i7-2600 has 8 MB of shared L3 cache, while the Intel Core i7-3615QE has 6 MB of shared L3 cache.

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

A: The Intel Core i7-3615QE wins with a score of 4774, compared to 4519 for the Intel Core i7-2600, a 5.6% advantage.

Q: Are both processors unlocked for overclocking?

A: No, neither processor has an unlocked multiplier. Both are locked parts.

Q: What integrated graphics do the two CPUs feature?

A: The Intel Core i7-3615QE has Intel HD 4000, while the Intel Core i7-2600 has Intel HD 2000.

The Verdict

The data is unambiguous: the Intel Core i7-3615QE outperforms the Intel Core i7-2600 in every recorded benchmark. Its wins range from 4.7% in Cinebench R15 single-core to 6.0% in Cinebench R20 single-core, with multi-core tests consistently showing a 5.6% to 5.7% lead. The i7-3615QE achieves this despite a lower base clock of 2.30 GHz versus 3.40 GHz, thanks to its newer 22 nm Ivy Bridge architecture. For anyone choosing based purely on compute performance, the i7-3615QE is the clear winner.

The i7-2600 is not without its niches. It offers 8 MB of L3 cache, which is 2 MB more than the i7-3615QE, and it supports DDR3 memory with PCIe Gen 3 on a desktop socket. This makes it a viable option for legacy desktop builds where the larger cache and standard platform matter more than raw Cinebench scores. Its end-of-life production status, though, means it is not a forward-looking choice.

The i7-3615QE also stands out for efficiency. Its 45W TDP is less than half the i7-2600’s 95W, making it the better fit for compact or thermally constrained systems. The i7-3615QE’s average benchmark score of 1381 edges out the i7-2600’s 1370, and both processors sit at the 36th percentile among all CPUs. In a direct comparison, the mobile Ivy Bridge part is the faster and more efficient processor, while the desktop Sandy Bridge part offers a larger cache and a traditional socket. Pick the i7-3615QE for performance and power efficiency; pick the i7-2600 only if the desktop platform and extra cache are non-negotiable.