Intel Core i7-7700T vs Intel Xeon E3-1260L v5 Comparison

The Intel Core i7-7700T and Intel Xeon E3-1260L v5 are both 4-core, 8-thread processors on the Intel Socket 1151 platform, yet they target different market segments: the former is a desktop part with integrated graphics, while the latter is a server/workstation chip with ECC memory support. Benchmark data shows a clear performance hierarchy, with the Xeon E3-1260L v5 winning all six head-to-head comparisons, despite the Core i7-7700T having a lower TDP. This analysis breaks down where each processor excels, the architectural differences behind the results, and what the numbers mean for potential use cases.

Where Each One Wins

The Intel Xeon E3-1260L v5 is the outright performance winner across every benchmark recorded. In the Cinebench series, it leads by a consistent margin of approximately 8.1% to 8.6% in both single-core and multi-core tests. For instance, in Cinebench R23, the Xeon scores 7015 multi-core and 990 single-core, while the Core i7-7700T scores 6410 and 905 respectively. This uniformity suggests the Xeon’s advantage is not workload-specific but rather a general throughput edge, likely stemming from its higher boost clock of 3.90 GHz compared to the i7-7700T’s 3.80 GHz.

The Core i7-7700T’s only qualitative win is efficiency. With a TDP of 35 watts versus the Xeon’s 45 watts, the i7-7700T consumes less power per unit of performance. In scenarios where thermal limits or energy budgets are strict—such as compact desktop builds or always-on systems—the i7-7700T’s lower power envelope is its primary selling point. However, this does not translate into any benchmark victory; the data shows zero wins for the i7-7700T across all six head-to-head tests.

For users prioritizing raw compute, the Xeon E3-1260L v5 is the clear choice. Its wins in Cinebench R15, R20, and R23—both multi-core and single-core—indicate it handles rendering, simulation, and single-threaded tasks better. The Xeon also carries ECC memory support, which is critical for data integrity in server or workstation environments. Meanwhile, the i7-7700T’s integrated HD 630 graphics make it a self-contained option for systems without a discrete GPU, a feature the Xeon lacks entirely.

Architecture Differences

Both processors are built on Intel’s 14 nm process node, but they derive from different microarchitectures. The Core i7-7700T is based on Kaby Lake, while the Xeon E3-1260L v5 is a Skylake-DT part. This generational split explains some feature differences. The i7-7700T belongs to the Core i7 (Kaby Lake) family, whereas the Xeon is from the Xeon E3 (Skylake-DT) line. Despite this, both share identical cache hierarchies: 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3.

The Xeon’s transistor count is listed as 1,750 million with a die size of 122 mm², whereas the i7-7700T’s transistor count and die size are not provided in the data. The Xeon supports both DDR3 and DDR4 memory, while the i7-7700T only supports DDR4. This gives the Xeon flexibility in legacy or cost-constrained server platforms. Memory bandwidth differs: the i7-7700T offers 38.4 GB/s, notably higher than the Xeon’s 34.1 GB/s, which could impact memory-intensive workloads despite the Xeon’s overall benchmark lead.

ECC memory is a major divider. The Xeon E3-1260L v5 supports ECC, while the i7-7700T does not. This makes the Xeon suitable for error-correcting environments like file servers or scientific computing. The i7-7700T compensates with integrated HD 630 graphics; the Xeon has no integrated graphics, requiring a discrete GPU for display output. Both use Gen 3 PCIe with 16 lanes (CPU only) and are multiplier-unlocked (false), meaning neither supports overclocking. The Xeon’s production status is end-of-life, while the i7-7700T is active, indicating ongoing availability for the desktop part.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Xeon E3-1260L v5 wins all multi-core benchmarks. In Cinebench R23, it scores 7015 versus the i7-7700T’s 6410, a delta of -8.6% from the i7’s perspective. The margin is identical in Cinebench R15 (707 vs 646) and R20 (2946 vs 2692).

Q: Does the Core i7-7700T have any performance advantage?

A: No. Across all six head-to-head benchmarks, the i7-7700T records zero wins. The Xeon leads by 8.1% to 8.6% in every test, including single-core and multi-core variants of Cinebench R15, R20, and R23.

Q: Can the Xeon E3-1260L v5 use the same memory as the Core i7-7700T?

A: The Xeon supports both DDR3 and DDR4, while the i7-7700T only supports DDR4. Both use dual-channel memory buses. The i7-7700T has higher memory bandwidth at 38.4 GB/s versus the Xeon’s 34.1 GB/s.

Q: Which processor is more suitable for a server environment?

A: The Xeon E3-1260L v5, due to its ECC memory support and server/workstation market segment. It also has a higher boost clock (3.90 GHz vs 3.80 GHz) and a larger transistor count (1,750 million vs not listed for the i7-7700T). However, it is end-of-life and lacks integrated graphics.

Q: What are the power consumption differences?

A: The Core i7-7700T has a TDP of 35 watts, while the Xeon E3-1260L v5 has a TDP of 45 watts. This makes the i7-7700T more power-efficient on paper, though the Xeon still outperforms it in every benchmark.

Q: Do both processors have the same cache configuration?

A: Yes. Both feature 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3. The architecture names differ (Kaby Lake vs Skylake-DT), but the cache hierarchy is identical.

Specification Differences

The two processors diverge on several key specifications. The Core i7-7700T has a base clock of 2.90 GHz and a boost clock of 3.80 GHz, while the Xeon E3-1260L v5 has the same base clock of 2.90 GHz but a higher boost clock of 3.90 GHz. TDP differs significantly: the i7-7700T draws 35 watts, the Xeon 45 watts. The Xeon supports both DDR3 and DDR4 memory, whereas the i7-7700T is limited to DDR4. Memory bandwidth favors the i7-7700T at 38.4 GB/s versus the Xeon’s 34.1 GB/s.

ECC memory is exclusive to the Xeon; the i7-7700T does not support it. Integrated graphics are present only on the i7-7700T (HD 630), while the Xeon has none. The market segment separates them: Desktop for the i7-7700T, Server/Workstation for the Xeon. Production status also differs—Active for the i7-7700T, End-of-life for the Xeon. The Xeon has a listed launch MSRP of $294, transistor count of 1,750 million, and die size of 122 mm²; these fields are absent for the i7-7700T. Both share the same socket, process node, cache sizes, PCIe configuration, and lack of unlocked multiplier.

Head-to-Head Benchmarks

The Xeon E3-1260L v5 dominates every recorded benchmark, with margins ranging from 8.1% to 8.6%. In Cinebench R15 multi-core, the Xeon scores 707 against the i7-7700T’s 646, a delta of -8.6%. Single-core R15 shows a similar pattern: 99 versus 91, a -8.1% difference from the i7’s perspective. Moving to Cinebench R20, the Xeon again leads in multi-core (2946 vs 2692, -8.6%) and single-core (415 vs 380, -8.4%). The largest absolute gap appears in Cinebench R23 multi-core, where the Xeon reaches 7015 and the i7-7700T stops at 6410, a difference of 605 points. Single-core R23 shows 990 versus 905, maintaining the -8.6% trend.

These results align with the Xeon’s higher boost clock of 3.90 GHz versus 3.80 GHz, though the i7-7700T’s higher memory bandwidth (38.4 GB/s vs 34.1 GB/s) does not compensate. The Xeon’s average benchmark score of 2029 is slightly lower than the i7-7700T’s 2039, but this aggregate metric includes Geekbench scores for the i7-7700T, which the Xeon lacks. In the direct head-to-head, the Xeon’s consistency is remarkable—every deltaPct is between -8.1% and -8.6%, indicating a stable performance advantage across all Cinebench versions. The i7-7700T’s percentile vs all CPUs is 45, identical to the Xeon’s, yet the Xeon’s nearest rivals include other Xeon parts (E3-1280 v5, E3-1240 v5) with similar average scores, while the i7-7700T’s rivals include AMD Opteron and Core i7-3960X. This suggests the Xeon’s competitive set is more homogeneous, reinforcing its server-oriented positioning. Ultimately, the data shows the Xeon E3-1260L v5 as the superior performer in every measured category, with the i7-7700T’s only counterpoints being lower power draw and integrated graphics.