Intel Core i3-10105T vs Intel Xeon E3-1270 v5 Comparison

The Intel Core i3-10105T and Intel Xeon E3-1270 v5 are both 4-core, 8-thread Intel parts, but they belong to different eras and design philosophies. The data shows a consistent performance advantage for the older Xeon E3-1270 v5 across every benchmark, despite the Core i3 being a newer 10th Gen part. The Xeon wins all six head-to-head tests by a uniform 6% margin, yet both processors land at the 46th percentile of all CPUs, indicating they are evenly matched in the broader performance landscape.

The Verdict

Based strictly on benchmark scores, the Intel Xeon E3-1270 v5 is the outright performance winner. It leads the Core i3-10105T in every single Cinebench test, from R15 to R23, in both single-core and multi-core workloads. The margin is consistent at 6% across the board, which indicates a fundamental clock-speed advantage rather than a workload-specific quirk.

The Intel Core i3-10105T, however, is the more sensible choice for a modern desktop build. It supports DDR4 memory with a higher theoretical bandwidth of 42.7 GB/s compared to the Xeon’s 34.1 GB/s, and it includes integrated UHD Graphics 630, which the Xeon lacks entirely. The Core i3 also operates at a 35W TDP versus the Xeon’s 80W, making it far more efficient for compact or low-power systems.

For a system builder prioritizing raw compute in a workstation or server context, the Xeon E3-1270 v5 is the pick. It also offers ECC memory support, a feature absent on the Core i3. For a general-purpose desktop or media PC, the Core i3-10105T is preferable due to its integrated graphics, newer socket (Intel Socket 1200), and active production status. The Xeon is end-of-life, while the Core i3 remains active.

Where Each One Wins

The Xeon E3-1270 v5 wins everywhere the benchmark data measures. It takes all six head-to-head Cinebench matchups, including both single-threaded and multi-threaded tests. Its highest single-core score is 999 in Cinebench R23, versus 939 for the Core i3. In multi-core R23, the Xeon scores 7082 versus 6656. The pattern is identical in R15 and R20, with the Xeon consistently ahead by 6%.

The Core i3-10105T does not win a single benchmark in the head-to-head table. Its wins are architectural and feature-based rather than performance-based. It has a newer release date (2021-03-15 versus 2015-10-18), a lower TDP of 35W versus 80W, and a higher memory bandwidth of 42.7 GB/s versus 34.1 GB/s. The Core i3 also has integrated graphics, making it a complete package for systems without a discrete GPU.

In terms of market positioning, the Xeon targets server/workstation use with ECC support, while the Core i3 is a desktop part. The Core i3’s active production status means it is still available for new builds, whereas the Xeon is end-of-life. For a new system today, the Core i3 is the practical choice despite losing every benchmark.

Architecture Differences

The two CPUs are built on the same 14 nm Intel process but use different architectures. The Core i3-10105T uses Comet Lake (Comet Lake-R codename), while the Xeon E3-1270 v5 uses Skylake (Skylake-DT codename). This generational gap explains some of the feature differences, though the core counts are identical.

The Xeon has a larger L3 cache at 8 MB shared, compared to 6 MB on the Core i3. Both have 64 KB L1 and 256 KB L2 per core. The Xeon also has a known transistor count of 1,750 million on a 122 mm² die, while the Core i3’s transistor count and die size are not listed in the data. The Xeon’s larger cache likely contributes to its performance edge.

Clock speeds tell a clear story. The Xeon has a base clock of 3.60 GHz and a boost of 4.00 GHz. The Core i3 has a base of 3.00 GHz and a boost of 3.90 GHz. The Xeon’s higher clocks, especially at base, give it a consistent advantage that shows up as the uniform 6% delta across all tests.

Memory support differs significantly. The Core i3 supports only DDR4, while the Xeon supports both DDR3 and DDR4. The Core i3’s dual-channel memory bandwidth is 42.7 GB/s, higher than the Xeon’s 34.1 GB/s. The Xeon supports ECC memory, which is critical for data integrity in server workloads. The Core i3 does not. Both use PCIe Gen 3 with 16 lanes from the CPU.

The integrated graphics situation is a major divergence. The Core i3 includes UHD Graphics 630, while the Xeon has no integrated graphics at all. This makes the Core i3 a self-contained desktop solution, whereas the Xeon requires a discrete GPU. The Xeon’s socket is Intel Socket 1151, while the Core i3 uses Intel Socket 1200.

FAQ

Q: Which CPU has higher single-core performance?

A: The Intel Xeon E3-1270 v5 wins all three single-core Cinebench tests. It scores 100 in R15, 419 in R20, and 999 in R23, versus 94, 394, and 939 for the Core i3-10105T. The delta is 6% in each case.

Q: Does the Core i3-10105T have integrated graphics?

A: Yes, it includes Intel UHD Graphics 630. The Xeon E3-1270 v5 has no integrated graphics, requiring a discrete GPU for display output.

Q: Which CPU supports ECC memory?

A: The Intel Xeon E3-1270 v5 supports ECC memory, while the Core i3-10105T does not. This makes the Xeon more suitable for error-sensitive server or workstation workloads.

Q: What is the memory bandwidth difference?

A: The Core i3-10105T has a memory bandwidth of 42.7 GB/s, while the Xeon E3-1270 v5 has 34.1 GB/s. The Core i3 also only supports DDR4, whereas the Xeon supports both DDR3 and DDR4.

Q: Which processor has a higher boost clock?

A: The Xeon E3-1270 v5 boosts to 4.00 GHz, while the Core i3-10105T boosts to 3.90 GHz. The Xeon also has a higher base clock at 3.60 GHz versus 3.00 GHz.

Q: Is the Core i3-10105T still in production?

A: Yes, the Core i3-10105T has an active production status. The Xeon E3-1270 v5 is end-of-life.

Head-to-Head Benchmarks

The benchmark data is remarkably consistent. Across six Cinebench tests, the Xeon E3-1270 v5 wins every single one with a delta of exactly -6% relative to the Core i3-10105T. This uniformity suggests the performance gap is purely clock-driven, not workload-dependent.

In Cinebench R15 multi-core, the Xeon scores 713 versus 670 for the Core i3. That is a 43-point gap. In single-core R15, the Xeon scores 100 versus 94, a 6-point gap. Both represent the same 6% relative difference.

Moving to Cinebench R20, the multi-core scores are 2974 for the Xeon and 2795 for the Core i3, a 179-point lead. Single-core R20 shows 419 versus 394, a 25-point gap. Again, the delta is 6%.

Cinebench R23, the most current workload, shows the same pattern. The Xeon scores 7082 multi-core versus 6656 for the Core i3, a 426-point advantage. In single-core, the Xeon scores 999 versus 939, a 60-point lead. The 6% delta holds.

The largest absolute win for the Xeon is in R23 multi-core, where it leads by 426 points. The smallest absolute win is in R15 single-core, with a 6-point lead. In percentage terms, all wins are identical at 6%.

The Core i3 does have a higher average benchmark score of 2058 versus 2048 for the Xeon, but this is based on different benchmark sets. The Core i3 includes Geekbench scores (3649 multi-core, 1265 single-core) that the Xeon does not have in its data. The head-to-head Cinebench results are unambiguous: the Xeon is faster in every measured workload.