Intel Core i3-10305T vs Intel Xeon D-1531 Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon D-1531 has 6 cores and 12 threads, while the Intel Core i3-10305T has 4 cores and 8 threads. The Xeon D-1531 offers two additional physical cores and four additional threads.

Q: What is the TDP of both processors?

A: Both the Intel Core i3-10305T and the Intel Xeon D-1531 have a TDP of 35 watts. This places both in the same low-power envelope.

Q: Which processor supports ECC memory?

A: The Intel Xeon D-1531 supports ECC memory, while the Intel Core i3-10305T does not. This is a key differentiator for server and workstation reliability requirements.

Q: Which processor has a higher boost clock?

A: The Intel Core i3-10305T has a boost clock of 4.00 GHz, which is higher than the Intel Xeon D-1531's boost clock of 2.70 GHz.

Q: What are the socket types for these two processors?

A: The Intel Core i3-10305T uses Intel Socket 1200, while the Intel Xeon D-1531 uses Intel BGA 1667. They are not socket-compatible.

Q: Which processor has integrated graphics?

A: The Intel Core i3-10305T includes UHD Graphics 630, while the Intel Xeon D-1531 has no integrated graphics. The Xeon D-1531 relies on a discrete GPU.

Architecture Differences

The Intel Core i3-10305T belongs to the Core 10th Gen family, built on the Comet Lake architecture with the codename Comet Lake-R. The Intel Xeon D-1531 belongs to the Xeon D family, built on the Broadwell architecture with the codename Broadwell-DE. Both are manufactured on a 14 nm process node at Intel, but they target fundamentally different market segments: the i3-10305T is a desktop part, while the Xeon D-1531 is a server/workstation part.

The transistor and die details differ. The Xeon D-1531 has 3,200 million transistors on a 246 mm² die, while the i3-10305T has no recorded transistor count or die size in the database. The cache hierarchy also differs in the L3 portion. The i3-10305T has 8 MB of shared L3 cache, whereas the Xeon D-1531 has 1.5 MB of L3 per core. Both have 64 KB of L1 per core and 256 KB of L2 per core.

Memory support reveals another architectural split. The i3-10305T supports DDR4 only, with a dual-channel memory bus and a recorded memory bandwidth of 42.7 GB/s. The Xeon D-1531 supports both DDR3 and DDR4, also with a dual-channel memory bus, but has no recorded memory bandwidth figure. The Xeon D-1531 supports ECC memory, which is absent on the i3-10305T.

PCIe connectivity differs as well. The i3-10305T provides PCIe Gen 3 with 16 lanes (CPU only). The Xeon D-1531 provides PCIe Gen 3 with 24 lanes (CPU only). This gives the server part more expansion headroom. The i3-10305T includes UHD Graphics 630 integrated graphics, while the Xeon D-1531 has none. The Xeon D-1531 is a server processor designed for dense, low-power deployments, while the i3-10305T is a desktop processor with a higher boost clock and integrated graphics.

Clock speeds are a major architectural divergence. The i3-10305T has a base clock of 3.00 GHz and a boost clock of 4.00 GHz. The Xeon D-1531 has a base clock of 2.20 GHz and a boost clock of 2.70 GHz. The i3-10305T's boost clock is 1.30 GHz higher. Despite the Xeon's core advantage, the i3's clock advantage is substantial in single-threaded work.

Both processors are locked, with no unlocked multiplier. Both are currently listed as Active in production status. The i3-10305T was released on 2021-03-15, while the Xeon D-1531 was released on 2015-10-31. The Xeon D-1531 is a considerably older design. The part numbers are SRH3M for the i3-10305T and SR2DG for the Xeon D-1531.

Head-to-Head Benchmarks

The head-to-head benchmark data covers six Cinebench tests, and the Intel Core i3-10305T wins all six. The largest single-core margin comes in Cinebench R15 single-core, where the i3-10305T scores 94 against the Xeon D-1531's 92, a delta of 2.2%. The other single-core tests show tighter margins: Cinebench R20 single-core is 393 versus 386, a 1.8% delta, and Cinebench R23 single-core is 938 versus 920, a 2% delta.

The multi-core results are consistent. In Cinebench R15 multi-core, the i3-10305T scores 669 versus 656, a 2% delta. In Cinebench R20 multi-core, the i3-10305T scores 2791 versus 2737, again a 2% delta. In Cinebench R23 multi-core, the i3-10305T scores 6647 versus 6517, also a 2% delta. The i3-10305T wins every head-to-head comparison, with deltas ranging from 1.8% to 2.2%.

The overall average benchmark scores reflect this. The i3-10305T has an average benchmark score of 1922, while the Xeon D-1531 has an average of 1885. That is a 37-point difference in favor of the i3-10305T. Both processors sit at the 43rd percentile versus all CPUs in the database. The nearest rivals for the i3-10305T include the Intel Xeon E3-1231 v3 with an average score of 1925 (delta -0.2%), the Intel Core i7-6700T with 1918 (delta 0.2%), the AMD Ryzen 3 7320U with 1916 (delta 0.3%), and the Intel Core i7-1180G7 with 1930 (delta -0.4%). The nearest rivals for the Xeon D-1531 include the Intel Core i7-4940MX with 1886 (delta -0.1%), the Intel Xeon E3-1270L v4 with 1883 (delta 0.1%), the Intel Xeon E3-1558L v5 with 1882 (delta 0.2%), and the Intel Processor U300 with 1881 (delta 0.2%).

The data shows that the i3-10305T's higher clock speeds overcome the Xeon D-1531's core-count advantage in these Cinebench workloads. The Xeon D-1531 has 50% more cores and 50% more threads, yet it trails in every recorded benchmark. This is notable because Cinebench is typically a scalable multi-threaded workload. The Xeon's lower clocks and older Broadwell architecture appear to limit its performance relative to the newer Comet Lake design.

Specification Differences

The two processors differ across several specification fields. The core counts differ: 4 cores for the i3-10305T versus 6 cores for the Xeon D-1531. Thread counts differ as well: 8 threads versus 12 threads. Base clocks differ: 3.00 GHz versus 2.20 GHz. Boost clocks differ: 4.00 GHz versus 2.70 GHz.

Socket types are different: Intel Socket 1200 for the i3-10305T versus Intel BGA 1667 for the Xeon D-1531. The architectures differ: Comet Lake versus Broadwell. The codenames differ: Comet Lake-R versus Broadwell. The generation identifiers differ: Core i3 (Comet Lake) versus Xeon D (Broadwell-DE).

Process node is the same at 14 nm for both. Foundry is the same, Intel. Transistor count is not recorded for the i3-10305T, while the Xeon D-1531 has 3,200 million transistors. Die size is not recorded for the i3-10305T, while the Xeon D-1531 has a 246 mm² die. L1 cache is the same at 64 KB per core. L2 cache is the same at 256 KB per core. L3 cache differs: 8 MB shared for the i3-10305T versus 1.5 MB per core for the Xeon D-1531.

Memory support differs: DDR4 for the i3-10305T versus DDR3 and DDR4 for the Xeon D-1531. Memory bus is the same, dual-channel. Memory bandwidth is recorded for the i3-10305T at 42.7 GB/s, but not recorded for the Xeon D-1531. ECC memory support differs: false for the i3-10305T, true for the Xeon D-1531.

PCIe differs: Gen 3 with 16 lanes for the i3-10305T versus Gen 3 with 24 lanes for the Xeon D-1531. Integrated graphics differ: UHD Graphics 630 for the i3-10305T, none for the Xeon D-1531. Market segment differs: Desktop for the i3-10305T, Server/Workstation for the Xeon D-1531.

Release dates differ: 2021-03-15 for the i3-10305T versus 2015-10-31 for the Xeon D-1531. Launch MSRP differs: the i3-10305T has a launch MSRP of $143, while the Xeon D-1531 has a launch MSRP of $348. Both have a TDP of 35 watts. Both are locked. Both are Active in production status. Part numbers differ: SRH3M for the i3-10305T, SR2DG for the Xeon D-1531.

The Verdict

The Intel Core i3-10305T wins every recorded benchmark in this comparison. It holds a 2% advantage in Cinebench R15 multi-core, a 2.2% advantage in Cinebench R15 single-core, a 2% advantage in Cinebench R20 multi-core, a 1.8% advantage in Cinebench R20 single-core, a 2% advantage in Cinebench R23 multi-core, and a 2% advantage in Cinebench R23 single-core. Its average benchmark score of 1922 exceeds the Xeon D-1531's 1885 by 37 points.

For desktop users, the i3-10305T is the clear choice. It offers a higher base clock of 3.00 GHz versus 2.20 GHz, a higher boost clock of 4.00 GHz versus 2.70 GHz, integrated UHD Graphics 630, a newer release date, and a lower launch MSRP of $143. It also supports DDR4 memory with a recorded bandwidth of 42.7 GB/s. The 4-core, 8-thread configuration is sufficient for the workloads reflected in the database, and it outperforms the 6-core, 12-thread Xeon D-1531 across the board.

For server or workstation deployments, the Xeon D-1531 has specific advantages that the benchmark scores do not capture. It supports ECC memory, which the i3-10305T does not. It provides 24 PCIe Gen 3 lanes versus 16, offering more expansion capability. It supports both DDR3 and DDR4 memory. It has a larger transistor count of 3,200 million and a die size of 246 mm². These features matter for reliability, memory integrity, and I/O density in server environments. The Xeon D-1531 also has a launch MSRP of $348, but the data does not assess whether that price is justified in server contexts.

The performance picture is consistent: the i3-10305T is faster in all six Cinebench tests, despite having fewer cores and threads. The Xeon D-1531's 6-core, 12-thread design does not translate into a multi-core win in these measurements. The i3-10305T's clock speed advantage appears to be decisive in these workloads. The Xeon D-1531 remains relevant only for use cases that require ECC memory, a BGA 1667 form factor, or 24 PCIe lanes. For raw benchmark performance, the i3-10305T is the better option.