CPU Comparison

The Intel Xeon E5-1607 v3 and the Intel Core i3-7300T are two very different processors that end up in nearly the same performance bracket. The Xeon is a server/workstation part from the Haswell-EP family, built for a 140W TDP and a high-end platform, while the Core i3 is a low-power desktop chip from Kaby Lake running at just 35W. Despite their architectural and platform differences, their average benchmark scores are almost identical, 1212 for the Xeon and 1211 for the i3, placing both at the 34th percentile of all CPUs. The data shows that the Xeon wins every single head-to-head benchmark, but the margins are not what you might expect from such a power disparity.

Head-to-Head Benchmarks

The Xeon E5-1607 v3 dominates the Core i3-7300T across every Cinebench test in the data, with a consistent delta of 19.2% in its favor. In Cinebench R15 multi-core, the Xeon scores 422 against the i3's 354. That gap repeats in R20 multi-core, where the Xeon posts 1761 and the i3 manages 1477. The R23 multi-core test shows the same pattern: 4193 for the Xeon versus 3519 for the i3. These results are notable because the Xeon achieves them with four physical cores and four threads, while the i3 has two physical cores and four threads via Hyper-Threading.

The single-core results are more telling. The Xeon's advantage is the same 19.2% in single-threaded workloads, as seen in R20 (248 vs 208) and R23 (591 vs 496). This is surprising because the i3-7300T has a higher base clock of 3.50 GHz compared to the Xeon's 3.10 GHz. The data indicates that the Xeon's older Haswell architecture, when paired with its larger 10 MB L3 cache, still outperforms the newer Kaby Lake design on a per-core basis in these tests. The Xeon has no boost clock listed, so its 3.10 GHz is the fixed operating frequency, yet it still outruns the i3's 3.50 GHz in single-threaded Cinebench runs.

The wins for the Xeon total 5 out of 5 in the head-to-head, with zero wins for the i3. The shortest margin is still the full 19.2%; there is no test where the i3 comes closer than that. This consistency suggests a fundamental throughput advantage for the Xeon, likely tied to its broader memory interface and cache allocation, rather than a clock-speed edge. The i3's higher frequency does not translate into a single benchmark win, which is a clear signal that raw clock rate is not the deciding factor here.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Xeon E5-1607 v3 has an average benchmark score of 1212, while the Core i3-7300T scores 1211. The delta between them is 0.1%, effectively a tie, despite the Xeon winning every head-to-head test.

Q: How much faster is the Xeon in multi-core workloads?

A: In Cinebench R23 multi-core, the Xeon scores 4193 versus the i3's 3519, a 19.2% advantage. The same 19.2% delta appears in R15 (422 vs 354) and R20 (1761 vs 1477).

Q: Does the Core i3-7300T win any benchmark?

A: No. The head-to-head data lists 5 wins for the Xeon and 0 for the i3. The i3's closest result is still a 19.2% deficit in every test.

Q: What is the TDP difference between the two?

A: The Xeon E5-1607 v3 has a TDP of 140W, while the Core i3-7300T is rated at 35W. The i3 uses a quarter of the power budget of the Xeon.

Q: Do both processors support ECC memory?

A: No. The Xeon E5-1607 v3 supports ECC memory, while the Core i3-7300T does not. This is a key feature difference for workstation reliability.

Q: What are the memory channel configurations?

A: The Xeon supports quad-channel DDR4 with a memory bandwidth of 59.7 GB/s. The i3 is dual-channel with 38.4 GB/s bandwidth.

Architecture Differences

The Xeon E5-1607 v3 is built on Intel's 22nm Haswell-EP process, with a die size of 356 mm² and 2,600 million transistors. It has 4 cores and 4 threads, with a base clock of 3.10 GHz and no boost. Its cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and a shared 10 MB L3. It uses the Intel Socket 2011-3 platform, which provides 40 PCIe Gen 3 lanes from the CPU and quad-channel memory support. The memory bandwidth is listed at 59.7 GB/s. This is a server/workstation part, marked as end-of-life, and it does not include integrated graphics.

The Core i3-7300T uses the 14nm Kaby Lake process, which is a smaller node but the die size and transistor count are not listed. It has 2 cores and 4 threads, with a base clock of 3.50 GHz and no boost. Its cache is 64 KB L1 per core, 256 KB L2 per core, and 4 MB shared L3, less than half the Xeon's L3. It fits the Intel Socket 1151 platform with 16 PCIe Gen 3 lanes and dual-channel memory support, delivering 38.4 GB/s bandwidth. The i3 includes Intel HD 630 integrated graphics, which the Xeon lacks. It is an active desktop part, released in 2017, roughly two and a half years after the Xeon's 2014 release.

The process node difference (22nm vs 14nm) explains the TDP gap: the Xeon draws 140W, the i3 draws 35W. The Xeon compensates for its older node with a larger die and more cache, while the i3 relies on a denser process and higher clock. The Xeon's memory subsystem is clearly superior, offering quad-channel versus dual-channel and 59.7 GB/s versus 38.4 GB/s. The i3's integrated graphics and newer architecture do not appear in the benchmark data as an advantage, since Cinebench is purely CPU-bound.

The Verdict

The data is unambiguous: the Intel Xeon E5-1607 v3 is the faster processor in every measured workload. It holds a 19.2% lead over the Core i3-7300T in both single-core and multi-core Cinebench tests, despite having the same core count (4 vs 2 physical cores, but with threads equalized at 4). If you are choosing purely on benchmark performance, the Xeon is the better pick. Its average score of 1212 edges out the i3's 1211, and its head-to-head record is a clean sweep.

However, the Xeon's 140W TDP and Socket 2011-3 platform demand a different class of motherboard and cooling. The i3-7300T, at 35W, fits a standard desktop board and can be cooled by a minimal solution. The i3 also includes integrated graphics, which the Xeon lacks, meaning the Xeon requires a discrete GPU for any display output. The Xeon supports ECC memory and quad-channel bandwidth, making it suitable for workstation stability, while the i3 does not support ECC and is limited to dual-channel.

For a user who already has a Socket 2011-3 board or needs ECC and high memory bandwidth, the Xeon is the obvious choice. For a builder starting fresh with a low-power desktop build, the i3's platform costs and power efficiency are compelling, but the performance data shows you will sacrifice 19.2% in CPU-bound tasks. The Xeon's end-of-life status and 2014 release date are offset by its superior benchmark results, but the i3's active production status means easier availability and ongoing support.

Specification Differences

The two CPUs differ across nearly every major specification. The Xeon has 4 cores and 4 threads, while the i3 has 2 cores and 4 threads. Base clocks are 3.10 GHz for the Xeon and 3.50 GHz for the i3, with neither offering a boost clock. TDPs are 140W and 35W, respectively. The Xeon uses Socket 2011-3, the i3 uses Socket 1151. Architecture is Haswell-EP versus Kaby Lake, on 22nm versus 14nm process nodes. The Xeon has 2,600 million transistors and a 356 mm² die, while those figures are not listed for the i3. L3 cache is 10 MB shared on the Xeon versus 4 MB shared on the i3, with identical L1 and L2 per-core caches. Memory support is DDR4 on both, but the Xeon runs quad-channel at 59.7 GB/s, and the i3 runs dual-channel at 38.4 GB/s. ECC memory is supported only on the Xeon. PCIe lanes are 40 on the Xeon versus 16 on the i3, both Gen 3. Integrated graphics are present only on the i3 (Intel HD 630). The Xeon is a server/workstation part marked end-of-life, released in 2014; the i3 is an active desktop part released in 2017. Neither has an unlocked multiplier.

Where Each One Wins

The Xeon E5-1607 v3 wins in every CPU benchmark category measured. It is the stronger choice for multi-threaded rendering, as shown by its 4193 R23 score versus 3519 for the i3. It also wins in single-threaded tasks, with 591 R23 single-core versus 496. The Xeon's 10 MB L3 cache and quad-channel memory bandwidth give it an edge in memory-heavy workloads, such as large dataset processing or virtualized environments. Its ECC support makes it suitable for error-sensitive workstation tasks, and its 40 PCIe lanes allow for extensive expansion. The 140W TDP is a cost, but the performance envelope is consistently higher.

The Core i3-7300T has no benchmark wins, but it wins in other, non-CPU categories. Its 35W TDP makes it far easier to cool and power, enabling compact, quiet builds. The integrated Intel HD 630 graphics mean it can run a display without a separate GPU, which is not possible on the Xeon. The dual-channel memory and 16 PCIe lanes are sufficient for basic desktop use and light expansion. The 14nm process is newer, and the part is still active, so it is easier to source. For a system where CPU performance is secondary to power efficiency and integrated graphics, the i3 is the logical pick. But for raw compute, the Xeon's 19.2% advantage in every test is the definitive answer.