Core i5-5675R vs Core i5-6600T

Both the Core i5-5675R and Core i5-6600T share an identical 4-core/4-thread configuration. Boost clocks reach 3.6 GHz on the Core i5-5675R versus 3.5 GHz on the Core i5-6600T — a 2.8% clock advantage for the Core i5-5675R (base: 3.1 GHz vs 2.7 GHz). The Core i5-5675R uses the Broadwell (2015−2019) architecture (14 nm), while the Core i5-6600T uses Skylake (2015−2016) (14 nm). In PassMark, the Core i5-5675R scores 5,564 against the Core i5-6600T's 5,565 — a 0% lead for the Core i5-6600T. Geekbench 6 single-core — the metric most relevant to gaming — records 1,157 vs 1,175, a 1.5% lead for the Core i5-6600T that directly translates to higher frame rates. L3 cache: 4 MB (total) on the Core i5-5675R vs 6 MB (total) on the Core i5-6600T.

The Core i5-5675R uses the BGA1364 socket (PCIe 3.0), while the Core i5-6600T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1866 on the Core i5-5675R versus DDR4-2133 on the Core i5-6600T — the Core i5-6600T supports 14.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-6600T supports up to 64 GB of RAM compared to 32 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: Z97,H97 (Core i5-5675R) and H110,B150,H170,Z170,Q150,Q170,B250,Q250,H270,Z270 (Core i5-6600T).

Neither processor supports overclocking. Virtualization support: VT-x, VT-d, EPT (Core i5-5675R) vs VT-x, VT-d (Core i5-6600T). Both include integrated graphics — Iris Pro Graphics 6200 (Core i5-5675R) and HD Graphics 530 (Core i5-6600T) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-5675R targets All-in-One Desktop, Core i5-6600T targets Office. Direct competitor: Core i5-5675R rivals A10-7890K; Core i5-6600T rivals AMD Athlon II X4 640.

At launch, the Core i5-5675R was priced at $339, while the Core i5-6600T came in at $213. On launch pricing ($339 vs $213), Core i5-6600T was $126 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-5675R delivers 16.4 pts/$ vs 26.1 pts/$ for the Core i5-6600T — making the Core i5-6600T the 45.7% better value option.

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