Intel Core i7-5775R

The Intel Core i7-5775R is a 2015-era desktop processor built on Intel's 14 nm Broadwell architecture, featuring 4 cores and 8 threads with base and boost clocks of 3.30 GHz and 3.80 GHz respectively. It integrates Iris Pro Graphics 6200, supports dual-channel DDR3 memory, and carries a 65 W TDP. This end-of-life part occupies the 47th percentile among all CPUs, with an average benchmark score of 2049, placing it in a tightly contested mid-range performance tier.

Benchmark Performance

The benchmark data positions the i7-5775R as a consistent, if unspectacular, performer whose aggregate scores cluster tightly with its nearest rivals. Its average benchmark score of 2049 sits within a razor-thin margin of every competitor in its immediate comparison group. Against the Intel Core i7-7820HK, the i7-5775R is effectively tied, posting a delta of just 0.1% higher. The Intel Xeon E-2124G edges it out by a negligible 0.1%, while the i7-5775R leads the Intel Core i7-7700T by 0.2% and the Intel Xeon E3-1270 v5 by 0.3%. These deltas are within measurement noise, indicating that the i7-5775R delivers essentially identical aggregate throughput to all four rivals.

Looking at specific workloads, the multi-threaded results show a modest but real capability. In Cinebench R15 multi-core, the chip scores 649 points. That figure rises to 2706 in Cinebench R20 multi-core and 6443 in Cinebench R23 multi-core. The Geekbench multi-core result of 3996 reinforces this picture of a CPU that handles threaded tasks adequately for its era, though it does not threaten modern high-core-count parts. The single-core scores tell a similar story: 91 in Cinebench R15, 381 in Cinebench R20, 909 in Cinebench R23, and 1218 in Geekbench. These numbers place the i7-5775R firmly in the lower-middle tier of single-threaded performance, a direct consequence of its 3.80 GHz boost ceiling and older architecture.

The overall percentile ranking of 47 means half of all tested CPUs outperform it and half underperform it, which is a fair summary of its position. It is not a leader in any benchmark category, but it is also not a laggard. The data suggests a processor that was competitive at launch but has since been overtaken by subsequent generations. For a 4-core, 8-thread part from 2015, the scores are exactly what the architecture would predict: adequate for mainstream tasks, but with no headroom for demanding professional workloads.

Power and Thermals

The i7-5775R carries a 65 W TDP, which is a modest power envelope for a quad-core desktop processor. This figure places it in the efficiency-oriented segment of Intel's lineup, well below the higher-wattage K-series parts of its generation. The 65 W rating implies that a capable air cooler is sufficient for sustained operation, as the chip does not produce the concentrated heat load typical of higher-TDP overclocking parts. The multiplier is locked, so there is no overclocking headroom to push voltage and thermals beyond stock behavior.

The 14 nm process node, Intel's first for a desktop chip, contributes to this thermal efficiency. The die size of 182 mm² is compact, and the integrated Iris Pro Graphics 6200 shares the same package, meaning the iGPU and CPU cores are thermally coupled. In practice, this means that sustained all-core loads will raise temperatures, but the 65 W ceiling keeps the thermal output manageable for a standard tower cooler or a compact low-profile design. The 29.9 GB/s memory bandwidth from dual-channel DDR3 is a bottleneck for both CPU and iGPU performance, but it does not affect thermal characteristics.

The end-of-life production status and locked multiplier mean that the thermal profile is fixed at stock settings. Users cannot reduce thermals through undervolting in any meaningful way beyond what the motherboard allows, and there is no headroom for higher clocks. The 65 W TDP class is notable for its suitability in small-form-factor builds where cooling space is limited. The chip will not throttle under typical office or light gaming loads, but heavy multi-threaded rendering will push it toward its thermal limits, requiring adequate case airflow.

Single-Thread vs Multi-Thread Behavior

The i7-5775R exhibits a significant gap between its single-thread and multi-thread capabilities, a pattern consistent with its 4-core, 8-thread configuration. The single-core scores of 91 (Cinebench R15), 381 (Cinebench R20), 909 (Cinebench R23), and 1218 (Geekbench) are underwhelming by modern standards. The 3.80 GHz boost clock is the primary driver here, and it is simply too low to compete with newer architectures that achieve higher IPC and clock speeds. Single-threaded workloads such as light office document editing, basic web browsing, or legacy application compatibility will feel serviceable but not snappy.

Multi-threaded performance is comparatively stronger. The Cinebench R23 multi-core score of 6443 is roughly seven times the single-core result, which is expected for a 4-core/8-thread part with efficient scaling. The Geekbench multi-core score of 3996 is about 3.3 times the single-core score, showing that the SMT implementation scales well across all eight threads. This behavior indicates that the i7-5775R is better suited to parallel workloads like video encoding, 3D rendering, or batch photo processing than to latency-sensitive single-thread tasks.

The practical implication is that users should tailor their expectations to the workload type. For a single-thread-bound application, the i7-5775R will perform like a mid-range CPU from its era, which is to say adequately but without any spark. For multi-threaded tasks that can utilize all eight threads, the chip punches slightly above its weight, delivering results that are competitive with the four nearest rivals, all of which show deltas under 0.3%. The 6 MB of shared L3 cache and 256 KB per-core L2 cache help multi-threaded scaling by reducing memory contention, but the 29.9 GB/s memory bandwidth remains a limiting factor for data-intensive parallel workloads.

Who Should Consider It

The i7-5775R is a niche product in 2025, and the benchmark data supports specific recommendations based on workload type. For gaming, this chip is a poor choice. The single-core scores, particularly the Geekbench result of 1218, are too low for modern game engines that rely heavily on high single-thread performance. The integrated Iris Pro Graphics 6200 is not a substitute for a discrete GPU, and even with a dedicated graphics card, the CPU will bottleneck in CPU-intensive titles. The 47th percentile ranking confirms that most other CPUs will deliver better gaming frame rates.

For content creation, the multi-threaded scores provide a more favorable picture. The Cinebench R23 multi-core result of 6443 is sufficient for occasional video transcoding or photo editing in applications that scale across threads. Users working with 1080p video or moderate-resolution stills will find the i7-5775R adequate, though render times will be noticeably longer than on newer mid-range parts. The 65 W TDP makes it a plausible choice for a compact workstation where power draw is a concern, but the locked multiplier and lack of ECC memory support limit its appeal in professional environments.

Office and general productivity workloads are where this chip makes the most sense. The 4 cores and 8 threads handle spreadsheet manipulation, word processing, email, and web conferencing without strain. The dual-channel DDR3 memory and 6 MB L3 cache are sufficient for these light tasks. However, the single-core score of 909 in Cinebench R23 indicates that even office applications with heavy JavaScript or complex document rendering will not feel instantaneous. The i7-5775R is best suited for users who already own a compatible BGA 1364 motherboard and need a low-power, quad-core part for basic computing, not for those building a new system.

How It Compares

vs. Intel Core i7-7820HK: The i7-5775R holds a 0.1% advantage in average benchmark score, making these two parts statistically identical in aggregate performance. The 7820HK is a mobile-oriented chip, while the 5775R is desktop-class, but both deliver nearly identical throughput. The data shows no meaningful winner here; users should choose based on platform compatibility rather than performance.

vs. Intel Xeon E-2124G: The Xeon E-2124G leads by a 0.1% margin, again a negligible difference. The Xeon is a workstation-class part with a higher clock speed, but the i7-5775R's extra threads (8 vs. 4) compensate in multi-threaded benchmarks. The delta is so small that real-world application performance will be indistinguishable.

vs. Intel Core i7-7700T: The i7-5775R leads the 7700T by 0.2%. The 7700T is a low-power Kaby Lake part with a 35 W TDP, while the 5775R draws 65 W. The 5775R's higher power envelope buys a marginal performance edge, but the 7700T offers better efficiency per watt. For users prioritizing power draw, the 7700T is the better choice; for raw performance, the 5775R wins by a hair.

vs. Intel Xeon E3-1270 v5: The i7-5775R posts a 0.3% lead over this Xeon part. The E3-1270 v5 is a server-oriented chip with similar core counts, and the 5775R's integrated graphics give it a feature advantage for desktop use. The performance delta is within the margin of error, so the decision comes down to whether the user needs the Iris Pro iGPU or ECC memory support, with the Xeon offering the latter and the 5775R offering the former.