Intel Core i7-6700T vs Intel Xeon E3-1230 v5 Comparison

The Intel Xeon E3-1230 v5 and the Intel Core i7-6700T share far more than the Socket 1151 platform they plug into. Both are quad-core, eight-thread Skylake processors built on Intel's 14 nm process with identical cache hierarchies and memory bandwidth. Yet the recorded data shows a clean sweep for the Xeon in every Cinebench test, while the Core i7 counters with a dramatically lower thermal envelope and integrated graphics. Which one makes sense depends almost entirely on what the machine is asked to do.

The Verdict

The data makes the split unusually simple. If performance is the priority, the Xeon E3-1230 v5 wins every single head-to-head benchmark, 6 tests to 0, with a margin of roughly 13 percent across the board. It posts a higher average benchmark score of 1947 versus 1918, and it sits in the 44th percentile against all CPUs in the database compared to the Core i7-6700T's 43rd. It also carries ECC memory support, the defining feature of its server and workstation segment.

The Core i7-6700T, by contrast, is built around restraint. Its 35 W TDP is less than half of the Xeon's 80 W, and it includes HD Graphics 530 where the Xeon ships with no integrated graphics at all. For a compact or quiet system that still needs a display output without a discrete graphics card, that combination is decisive. The verdict: the Xeon for sustained compute and platform reliability, the Core i7-6700T for low-power desktop duty.

Architecture Differences

On paper, these are near twins. Both use the Skylake architecture on a 14 nm process from Intel's own foundry, with 4 cores and 8 threads apiece. The cache layout is identical: 64 KB of L1 per core, 256 KB of L2 per core, and 8 MB of shared L3. Memory support also matches, with DDR3 and DDR4 on a dual-channel bus delivering 34.1 GB/s of bandwidth in both cases. PCIe is Gen 3 with 16 lanes from the CPU on each part.

The divergence is in codename and intent. The Xeon is Skylake-DT silicon aimed at the server and workstation market, and the database records its transistor count at 1,750 million on a 122 mm² die; the corresponding fields are not recorded for the Core i7-6700T, which uses desktop Skylake silicon. Beyond market segment, the two functional splits stand out: ECC memory is enabled only on the Xeon, and integrated graphics exist only on the Core i7-6700T in the form of HD Graphics 530.

Clock speeds tell the performance story. The Xeon runs a 3.40 GHz base and 3.80 GHz boost; the Core i7-6700T runs 2.80 GHz base and 3.60 GHz boost. That gap tracks almost exactly with the benchmark results.

Head-to-Head Benchmarks

The head-to-head record is a shutout, and a remarkably consistent one. In Cinebench R15 multi-core, the Xeon scores 678 against 599, a 13.2 percent win. Single-core goes 95 to 84, 13.1 percent. Cinebench R20 multi-core: 2827 to 2496, 13.3 percent. R20 single-core: 399 to 352, 13.4 percent. Cinebench R23 multi-core: 6733 to 5943, 13.3 percent. R23 single-core: 950 to 839, 13.2 percent.

The uniformity is the interesting part. A gap that holds steady across single-core and multi-core tests suggests the difference is not about threading or scheduling but simply sustained clock behavior, which aligns with the 80 W versus 35 W thermal budgets. The Core i7-6700T never collapses; it simply runs slower everywhere.

The database also holds Geekbench results for the Core i7-6700T alone, 3906 multi-core and 1128 single-core, with no matching Xeon entry, so no cross-comparison is possible there. Context from each chip's rival set reinforces how close these two are to each other in the broader landscape. The Xeon's nearest rivals include the Intel Core i5-1035G7 (average score 1948, within 0.1 percent), the Xeon E3-1535M v5 (1945, 0.1 percent), the Core i7-8709G (1950, 0.2 percent), and the Core i7-9850HL (1941, 0.3 percent). The Core i7-6700T's list includes the AMD Ryzen 3 7320U (1916, 0.1 percent), the Core i3-10305T (1922, 0.2 percent), the Xeon E-2314 (1911, 0.4 percent), and the Xeon E3-1231 v3 (1925, 0.4 percent). Both CPUs therefore occupy essentially the same neighborhood, separated by about 29 points of average score.

Specification Differences

The fields where the two actually differ are few but consequential:

• Base clock: 3.40 GHz on the Xeon versus 2.80 GHz on the Core i7-6700T
• Boost clock: 3.80 GHz versus 3.60 GHz
• TDP: 80 W versus 35 W
• ECC memory: supported on the Xeon, not on the Core i7-6700T
• Integrated graphics: none on the Xeon, HD Graphics 530 on the Core i7-6700T
• Market segment: Server/Workstation versus Desktop
• Codename: Skylake-DT versus Skylake
• Release date: the Xeon arrived later, 2015-10-18 against 2015-08-31
• Launch MSRP: $261 for the Xeon, $303 for the Core i7-6700T
• Part numbers: SR2LE versus SR2BUSR2L3

Everything else, cores, threads, cache, memory support, memory bandwidth, PCIe lanes, socket, process node, and the locked multiplier on both, is identical.

FAQ

Q: Which CPU is faster in benchmarks?

A: The Xeon E3-1230 v5 wins all six head-to-head Cinebench tests by margins between 13.1 and 13.4 percent, including single-core wins, so it is faster across the board.

Q: Does either CPU support ECC memory?

A: Yes, the Xeon E3-1230 v5 supports ECC. The Core i7-6700T does not, which reflects their server/workstation and desktop segment split.

Q: Which one has integrated graphics?

A: The Core i7-6700T includes HD Graphics 530. The Xeon E3-1230 v5 has no integrated graphics listed, so it requires a discrete graphics solution for display output.

Q: How much lower is the power draw of the Core i7-6700T?

A: Its TDP is 35 W versus 80 W for the Xeon, meaning it fits thermal envelopes the Xeon cannot.

Q: Are the two chips socket compatible?

A: Yes, both use Intel Socket 1151 and share the same dual-channel DDR3/DDR4 memory platform with 34.1 GB/s of bandwidth.

Q: Can either CPU be overclocked?

A: No. Both have locked multipliers, so the recorded clocks are effectively the ceiling for each part.

Where Each One Wins

The Xeon E3-1230 v5 owns every performance scenario in the recorded data. Its 13 percent edge in Cinebench R23 multi-core (6733 to 5943) and R15 single-core (95 to 84) makes it the pick for rendering, sustained compute workloads, and any system where ECC memory matters, which is precisely the workstation role it was designed for. Its percentile standing, 44th versus 43rd, is marginal, but within this pairing it is the clear performer.

The Core i7-6700T wins where the benchmark suite is silent but the spec sheet speaks. Its 35 W TDP suits compact, quiet, or thermally constrained builds. Its HD Graphics 530 means the system works out of the box without a discrete GPU, something the Xeon cannot offer. And its average score of 1918 puts it within striking distance of rivals like the Xeon E-2314 and Ryzen 3 7320U despite the low power budget, which is exactly what its T-series design intended. Both chips are end-of-life now, but the data preserves the trade-off cleanly: clocks and ECC on one side, efficiency and graphics on the other.