Intel Core i7-7920HQ vs Intel Xeon E3-1285L v4 Comparison

The Intel Core i7-7920HQ and Intel Xeon E3-1285L v4 are both end-of-life Intel processors with four cores and eight threads, yet they target entirely different platforms—one a mobile chip, the other a server/workstation part. Despite their divergent origins, the aggregate benchmark data places them nearly neck-and-neck, with the Core i7 averaging 1992 points and the Xeon averaging 1991 points, a difference of just 0.1%. The Xeon, however, sweeps every head-to-head benchmark, making the overall average a misleading indicator of per-test performance.

Head-to-Head Benchmarks

The Intel Xeon E3-1285L v4 wins all six recorded head-to-head comparisons, but the victories are consistent rather than overwhelming. In Cinebench R15 multicore, the Xeon scores 693 against the Core i7’s 619, a margin of -10.7% from the Core i7’s perspective. The single-core R15 test follows the same pattern: the Xeon posts 97 points versus the Core i7’s 87, a -10.3% gap. These deltas are nearly uniform across the entire suite, indicating a structural performance advantage rather than a workload-specific quirk.

The Cinebench R20 results mirror the R15 numbers almost exactly. The Xeon leads multicore with 2891 points against 2583, a -10.7% difference, and single-core with 407 against 364, a -10.6% gap. The pattern holds in Cinebench R23 as well: the Xeon’s multicore score of 6884 beats the Core i7’s 6151 by -10.6%, while its single-core score of 971 tops the Core i7’s 868 by the same -10.6% margin. No single test deviates from this ~10.6-10.7% range, which suggests the Xeon’s advantage comes from a fundamental frequency or architectural edge, not from cache or memory-sensitive workloads.

Notably, the Core i7-7920HQ has no benchmark wins at all, with a 0-6 record against the Xeon. The Xeon’s base clock of 3.40 GHz is higher than the Core i7’s 3.10 GHz, though the Core i7 boosts to 4.10 GHz against the Xeon’s 3.80 GHz. The data shows the Xeon’s lower boost clock does not hinder it in these tests, as it wins both single-core and multi-core workloads by identical margins. The Geekbench results, which are only reported for the Core i7 (3999 multicore, 1267 single-core), have no corresponding Xeon numbers in the fact pack, so they cannot be used for comparison.

The average benchmark scores place both CPUs in the 44th percentile of all CPUs, meaning they sit below the median of the entire database. The nearest rivals list confirms their close standing: the AMD Ryzen 5 1500X averages 1992 points (0% delta from the Core i7), the Xeon E3-1285L v4 averages 1991 (0.1% delta from the Core i7), and the Intel Xeon E3-1585L v5 averages 1989 (0.2% delta). The Intel Xeon E-2276M averages 1996, which is -0.2% from the Core i7, indicating a slightly higher score. These deltas are all within a rounding error, making the two CPUs in this comparison effectively tied in overall standing.

The Verdict

The data is unambiguous: the Intel Xeon E3-1285L v4 wins every benchmark in the head-to-head comparison. If the decision rests purely on compute performance, the Xeon is the correct choice, as it delivers a 10.6-10.7% advantage across all Cinebench tests. This margin is consistent whether the workload is single-threaded or multi-threaded, so there is no scenario in the data where the Core i7-7920HQ catches up. The Xeon’s higher base clock of 3.40 GHz versus 3.10 GHz appears to be the decisive factor, as its lower 3.80 GHz boost clock still produces faster results than the Core i7’s 4.10 GHz boost.

However, the Core i7 has legitimate reasons for selection outside of raw benchmark scores. It is a mobile processor with a 45 W TDP, compared to the Xeon’s 65 W, making it the lower-power option for thermally constrained systems. The Core i7 also supports both DDR3 and DDR4 memory, while the Xeon is limited to DDR3. The integrated graphics differ as well: the Core i7 carries Intel HD Graphics 630, while the Xeon has Intel Iris Pro P6300, which may be more capable for certain visual workloads, though no benchmark data is provided for either. The Core i7’s launch MSRP is $568, while the Xeon’s launch MSRP is $445; this information is stated once per the database rules, and pricing analysis is otherwise excluded.

For a user building a Socket 1150 system with ECC memory requirements, the Xeon E3-1285L v4 is the only option of the two, as the Core i7 does not support ECC and uses a different socket (Intel BGA 1440). The Xeon’s server/workstation market segment and 29.9 GB/s memory bandwidth further reinforce its suitability for reliability-focused builds. The Core i7, by contrast, is a drop-in mobile part that prioritizes power efficiency and memory flexibility over peak throughput.

Where Each One Wins

The Intel Xeon E3-1285L v4 wins every compute benchmark, so it is the clear pick for any workload that prioritizes raw CPU throughput. This includes multi-threaded rendering, video encoding, and simulation tasks where the 10.7% multicore advantage in Cinebench R15, R20, and R23 translates directly into reduced processing time. The Xeon also wins single-core tests by 10.3-10.6%, making it better for lightly-threaded applications like older games or single-threaded productivity tools, even though neither CPU reaches the 50th percentile of the database.

The Intel Core i7-7920HQ wins in scenarios where platform constraints matter more than peak speed. Its 45 W TDP is 20 W lower than the Xeon’s 65 W, which is critical for laptops and compact mobile workstations where cooling and battery life are finite. The Core i7’s support for DDR4 memory is an advantage for new builds that want to reuse modern DIMMs, whereas the Xeon is locked to DDR3. The Core i7 also has a smaller die size at 126 mm² versus the Xeon’s 160 mm², which may indicate lower manufacturing costs, though the transistor count for the Core i7 is not listed, while the Xeon has 1,400 million transistors.

The Xeon’s ECC memory support is a definitive win for data integrity in server or workstation roles, as the Core i7 has no ECC capability. The Xeon also features a higher memory bandwidth rating of 29.9 GB/s, while the Core i7 has no listed memory bandwidth figure. For users who need a Socket 1150 CPU with Intel Iris Pro P6300 graphics and ECC, the Xeon is the only choice; for users who need a BGA 1440 mobile part with lower power draw, the Core i7 is the only choice.

FAQ

Q: Which CPU has a higher average benchmark score?

A: The Intel Core i7-7920HQ averages 1992 points, while the Intel Xeon E3-1285L v4 averages 1991 points, a 0.1% difference in favor of the Core i7. Both CPUs sit in the 44th percentile of all CPUs.

Q: How large is the Xeon’s performance lead in Cinebench R23 multicore?

A: The Xeon E3-1285L v4 scores 6884 in Cinebench R23 multicore, compared to the Core i7-7920HQ’s 6151, a delta of -10.6% from the Core i7’s perspective.

Q: Does the Core i7-7920HQ win any head-to-head benchmark?

A: No. The Core i7 has zero wins in the six recorded head-to-head benchmarks, with the Xeon winning all six by margins of 10.3% to 10.7%.

Q: What are the TDP differences between these two processors?

A: The Core i7-7920HQ has a TDP of 45 W, while the Xeon E3-1285L v4 has a TDP of 65 W. The Core i7 is the lower-power option.

Q: Which CPU supports ECC memory?

A: The Intel Xeon E3-1285L v4 supports ECC memory, while the Intel Core i7-7920HQ does not have ECC support.

Q: What is the socket difference between the two?

A: The Core i7-7920HQ uses Intel BGA 1440, a mobile socket, while the Xeon E3-1285L v4 uses Intel Socket 1150, a desktop/server socket. They are not interchangeable.

Architecture Differences

The two processors come from different Intel generations and microarchitectures. The Core i7-7920HQ is built on Kaby Lake, specifically the Kaby Lake-H variant, and was released in January 2017. The Xeon E3-1285L v4 is based on Broadwell, specifically Broadwell-DT, and was released in June 2015. Both use a 14 nm process node from Intel, but the Xeon has a larger die size of 160 mm² with 1,400 million transistors, while the Core i7 has a die size of 126 mm² with no transistor count listed.

The cache hierarchies differ in the L3 cache. The Core i7 has 8 MB of shared L3 cache, while the Xeon has 6 MB of shared L3 cache. Both share the same per-core L1 and L2 cache sizes: 64 KB and 256 KB per core, respectively. The larger L3 cache on the Core i7 does not translate to a performance win, as the Xeon still leads all benchmarks despite having 2 MB less L3 cache.

Memory support is a major divergence. The Core i7 supports both DDR3 and DDR4 memory in a dual-channel configuration, while the Xeon supports only DDR3, also dual-channel. The Xeon has a listed memory bandwidth of 29.9 GB/s, whereas the Core i7 has no memory bandwidth figure in the data. The Xeon also supports ECC memory, a feature absent from the Core i7. Both CPUs have PCIe Gen 3 support, but the Core i7 specifies 16 lanes from the CPU, while the Xeon simply lists "Gen 3" without a lane count.

The integrated graphics differ significantly. The Core i7 includes Intel HD Graphics 630, while the Xeon includes Intel Iris Pro P6300. The market segments reflect their intended use: the Core i7 is a Mobile processor, and the Xeon is a Server/Workstation part. The clock speeds also differ, with the Core i7 having a base clock of 3.10 GHz and boost of 4.10 GHz, while the Xeon has a base of 3.40 GHz and boost of 3.80 GHz. Neither CPU has an unlocked multiplier, and both are end-of-life products. The launch MSRP for the Core i7 is $568, while the Xeon’s launch MSRP is $445, though pricing does not factor into performance analysis.