Intel Core i3-10105T vs Intel Xeon E3-1240 v5 Comparison

Head-to-Head Benchmarks

The benchmark data paints a remarkably consistent picture across every single test: the Intel Xeon E3-1240 v5 wins all six head-to-head comparisons, though the margins are uniformly narrow. The Xeon's largest advantage appears in Cinebench R20 single-core, where it scores 416 against the Core i3-10105T's 394, a delta of -5.3% from the i3's perspective. That pattern repeats across the board: Cinebench R15 multi-core shows 707 versus 670 (-5.2%), R15 single-core shows 99 versus 94 (-5.1%), R20 multi-core shows 2948 versus 2795 (-5.2%), R23 multi-core shows 7020 versus 6656 (-5.2%), and R23 single-core shows 991 versus 939 (-5.2%). The consistency of these deltas, all hovering between 5.1% and 5.3%, suggests a fundamental clock-speed advantage rather than any architectural edge in specific workloads.

What is striking is that the Core i3-10105T does not win a single benchmark in this head-to-head set. Even so, the i3's scores are not far off, and its average benchmark score across all recorded tests lands at 2058, which places it in the 46th percentile of all CPUs in the database. The Xeon E3-1240 v5 posts an average score of 2030, putting it in the 45th percentile. That means the i3 actually sits one percentile point higher in the overall distribution despite losing every direct comparison, a quirk driven by the differing benchmark sets each CPU was subjected to. The i3 also carries Geekbench results (3649 multi-core, 1265 single-core) that the Xeon lacks, which influence its aggregate standing.

Looking at the nearest rivals for each chip confirms how tightly packed this performance tier is. The i3-10105T's closest competitors include the Intel Core i7-8705G at an identical average score of 2058 (0% delta), the AMD Ryzen 5 3400G at 2059 (-0.1%), the AMD Ryzen 3 3100 at 2055 (0.2%), and the Intel Xeon E3-1585 v5 at 2067 (-0.4%). The Xeon E3-1240 v5 sits near the Intel Core i7-5775R at 2031 (-0.1%), the Intel Xeon E3-1280 v5 at 2029 (0.1%), the Intel Xeon E3-1260L v5 at 2029 (0.1%), and the Intel Core i5-1130G7 at 2026 (0.2%). Neither chip is an outlier; both are squarely within a small cluster of similarly performing parts.

Architecture Differences

The two processors come from different Intel generations and target different market segments, which explains their behavioral differences despite matching core and thread counts. The Core i3-10105T is a Comet Lake-R part built on Intel's 14 nm process, released in March 2021, and aimed at the desktop segment. It features 4 cores and 8 threads, with a base clock of 3.00 GHz and a boost clock of 3.90 GHz. The Xeon E3-1240 v5 is a Skylake-DT part, also on 14 nm, but released in October 2015 and classified as a server/workstation chip. It matches the i3's 4 cores and 8 threads but starts with a higher base clock of 3.50 GHz, boosting to the same 3.90 GHz ceiling. That 0.50 GHz base-clock gap is the most plausible driver of the Xeon's consistent benchmark lead, since boost clocks are identical.

Cache configurations differ as well. The i3-10105T carries 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3 cache. The Xeon E3-1240 v5 matches the per-core L1 and L2 sizes but offers 8 MB of shared L3, a 2 MB advantage that can help in workloads with larger working sets. The Xeon also discloses its transistor count at 1,750 million and die size at 122 mm², while the i3's database entry leaves those fields blank. Memory support splits them further: the i3 supports DDR4 only, with dual-channel memory and a theoretical bandwidth of 42.7 GB/s, while the Xeon supports both DDR3 and DDR4, also dual-channel, but with a lower listed bandwidth of 34.1 GB/s. The i3's higher memory bandwidth figure suggests it can feed its cores more quickly in memory-bound scenarios, even if the recorded benchmarks do not reflect a win.

ECC memory is another dividing line. The Xeon E3-1240 v5 supports ECC memory, a hallmark of server and workstation parts, while the i3-10105T does not. Integrated graphics are present on the i3 (UHD Graphics 630), whereas the Xeon has none, so the i3 can drive a display without a discrete GPU. Both CPUs use PCIe Gen 3 with 16 lanes from the CPU, and neither has an unlocked multiplier. The sockets are incompatible: the i3 uses Intel Socket 1200, while the Xeon uses Intel Socket 1151. Production status also differs, with the i3 listed as active and the Xeon as end-of-life.

The Verdict

The data is unambiguous about raw performance: the Intel Xeon E3-1240 v5 wins every benchmark in the head-to-head set, with margins of roughly 5% across Cinebench R15, R20, and R23 in both single-core and multi-core tests. For users who need maximum compute throughput in CPU-bound tasks and do not care about integrated graphics or platform longevity, the Xeon is the stronger choice based purely on scores. Its higher base clock and larger L3 cache appear to deliver a measurable, consistent edge.

However, the Intel Core i3-10105T counters with several practical advantages that the numbers alone do not capture. It has a much lower TDP at 35 watts versus the Xeon's 80 watts, making it far easier to cool in compact systems. It includes UHD Graphics 630, so no discrete GPU is required for basic display output. It supports DDR4 with a higher listed memory bandwidth of 42.7 GB/s, which could benefit certain workloads even if the Cinebench suite does not show it. It is also an active product, whereas the Xeon is end-of-life, meaning the i3 is the more forward-looking purchase from a supply-chain perspective. Its average benchmark score of 2058 also edges the Xeon's 2030, and it sits at the 46th percentile versus the Xeon's 45th, indicating that the i3's overall database standing is slightly better once its full benchmark set is considered.

For a system builder prioritizing performance in the specific tests recorded, the Xeon wins. For a builder prioritizing power efficiency, integrated graphics, memory bandwidth, and product availability, the i3 is the better fit. The choice hinges on which of those factors matters more for the intended use case.

FAQ

Q: Which CPU has the higher base clock?

A: The Intel Xeon E3-1240 v5 has a base clock of 3.50 GHz, while the Intel Core i3-10105T has a base clock of 3.00 GHz. Both share the same 3.90 GHz boost clock.

Q: Does the Intel Core i3-10105T support ECC memory?

A: No. The database lists ECC memory support as false for the i3-10105T. The Intel Xeon E3-1240 v5 does support ECC memory.

Q: What are the TDP ratings for these two processors?

A: The Intel Core i3-10105T has a TDP of 35 watts. The Intel Xeon E3-1240 v5 has a TDP of 80 watts, more than double the i3's rating.

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

A: The Intel Xeon E3-1240 v5 scores 7020 in Cinebench R23 multi-core, beating the Intel Core i3-10105T's 6656, a delta of -5.2% from the i3's perspective.

Q: Do these CPUs have integrated graphics?

A: The Intel Core i3-10105T includes UHD Graphics 630. The Intel Xeon E3-1240 v5 has no integrated graphics, so it requires a discrete GPU for display output.

Q: What sockets do these processors use?

A: The Intel Core i3-10105T uses Intel Socket 1200. The Intel Xeon E3-1240 v5 uses Intel Socket 1151, so they are not interchangeable on the same motherboard.

Where Each One Wins

The Intel Xeon E3-1240 v5 wins every single recorded benchmark, so in pure performance terms it is the clear victor. Its advantages show up in both single-core and multi-core workloads, with Cinebench R20 single-core being its largest margin at 5.3% over the i3. The Xeon is the right pick for tasks that are heavily dependent on CPU compute and where the higher base clock and larger 8 MB L3 cache can be fully utilized. It is also the only one of the two with ECC memory support, which matters for users running memory-sensitive server or workstation applications where data integrity is critical. Its end-of-life status is a caveat, but for a fixed workload that does not require future scalability, its benchmark results speak for themselves.

The Intel Core i3-10105T, despite losing all head-to-head matchups, has its own set of wins. Its 35 watt TDP makes it the far more power-efficient option, suitable for small form factor builds or always-on systems where heat and energy draw are concerns. Its integrated UHD Graphics 630 means it can function in a system without a dedicated graphics card, which the Xeon cannot do. Its memory bandwidth of 42.7 GB/s exceeds the Xeon's 34.1 GB/s, potentially giving it an edge in memory-heavy tasks that are not captured by the Cinebench suite. Its active production status and higher average benchmark score (2058 versus 2030) also make it the more future-proof choice in the database's overall ranking. For general desktop use, media playback, or light productivity, the i3 is the more practical selection despite the Xeon's benchmark supremacy.