AMD Ryzen 3 5300U vs Intel Core i7-5775C Comparison

The Verdict

The data presents a genuinely split decision. The Intel Core i7-5775C and the AMD Ryzen 3 5300U each secure three benchmark wins, but the nature of those wins points to very different use cases. For sustained multi-threaded workloads and older Cinebench R23 multi-core tests, the Intel part takes the lead. For single-thread responsiveness and the newer Cinebench R15 suite, the AMD mobile chip is clearly superior. The Intel i7-5775C is a desktop processor with a 65W TDP and a 3.70 GHz boost clock, while the AMD Ryzen 3 5300U is a 15W mobile part with a higher 3.80 GHz boost clock. The database shows the AMD chip winning by a wide margin in Cinebench R15 multi-core (906 vs 660, a 27.2% deficit for Intel) and single-core (170 vs 93, a 45.3% deficit). However, the Intel chip wins by even larger margins in Cinebench R23 multi-core (6549 vs 5341, a 22.6% lead) and Geekbench multi-core (4989 vs 4035, a 23.6% lead). The Intel part also edges out a win in Geekbench single-core (1441 vs 1244, a 15.8% lead).

The verdict is conditional on the workload. If the task is heavily multi-threaded rendering with modern instruction sets, the Intel i7-5775C appears to have the advantage. If the task is short-burst single-thread performance or the specific Cinebench R15 workload, the AMD Ryzen 3 5300U is the stronger choice. The percentile rankings are nearly identical, 47th for Intel and 46th for AMD, indicating they sit in the same performance tier overall. The average benchmark score for the Intel part is 2224, while the AMD part scores 2135, a small gap that favors the Intel desktop chip. The choice is not about which is categorically faster, but which benchmark suite matches the intended use case.

Architecture Differences

The two processors come from different eras and design philosophies. The Intel Core i7-5775C is based on the Broadwell architecture, built on a 14 nm process at Intel's foundry, with a die size of 182 mm². It has 4 cores and 8 threads, with a base clock of 3.30 GHz and a boost clock of 3.70 GHz. The AMD Ryzen 3 5300U uses the Zen 2 architecture, codenamed Lucienne, fabricated on a 7 nm process by TSMC, with a die size of 156 mm² and a transistor count of 9,800 million. It also has 4 cores and 8 threads, but with a lower base clock of 2.60 GHz and a higher boost clock of 3.80 GHz.

The cache hierarchies differ significantly. The Intel part has 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3 cache. The AMD part has the same 64 KB of L1 per core, but doubles the L2 to 512 KB per core, and has a smaller 4 MB of shared L3 cache. The memory support is distinct: the Intel chip uses DDR3 in a dual-channel configuration, delivering 25.6 GB/s of bandwidth, while the AMD chip uses DDR4 in dual-channel, delivering 51.2 GB/s, exactly double the bandwidth. The Intel part uses PCIe Gen 3 with 16 lanes from the CPU, while the AMD part uses PCIe Gen 3 with only 12 lanes.

The integrated graphics also differ. Intel pairs the i7-5775C with Iris Pro Graphics 6200, while AMD includes Radeon Graphics with 384 SPs. The TDP is a major differentiator: 65W for the Intel desktop chip versus 15W for the AMD mobile chip. The Intel part has an unlocked multiplier, making overclocking possible, while the AMD part is locked. The Intel processor targets the desktop market with an Intel Socket 1150, while the AMD chip is a mobile part on AMD Socket FP6. The Intel chip was released on May 14, 2015, while the AMD chip came much later on January 11, 2021. Neither supports ECC memory.

Where Each One Wins

The benchmark record shows a clear split by benchmark suite. The AMD Ryzen 3 5300U wins all three Cinebench R15 tests, both multi-core and single-core, and also takes Cinebench R23 single-core. The Intel Core i7-5775C wins the Cinebench R23 multi-core test, and both Geekbench tests, multi-core and single-core.

For users running legacy Cinebench R15 workloads, the AMD chip is decisively faster. The single-core score of 170 versus 93 represents a massive 45.3% advantage for AMD. This suggests that the AMD architecture handles this specific workload with far greater efficiency. In multi-threaded R15, the AMD part scores 906 versus 660, a 27.2% lead.

Conversely, the Intel chip wins in Geekbench, both single-core and multi-core. The single-core score of 1441 versus 1244 gives Intel a 15.8% lead, and the multi-core score of 4989 versus 4035 gives a 23.6% lead. The Intel part also wins Cinebench R23 multi-core by a substantial 22.6% margin, scoring 6549 versus 5341.

The pattern suggests the Intel chip has stronger sustained multi-threaded performance in newer benchmarks, while the AMD chip excels in the older R15 suite. The AMD chip also wins Cinebench R23 single-core, scoring 1115 versus 924, a 17.1% lead. Users prioritizing Geekbench or Cinebench R23 multi-core should favor the Intel chip. Users prioritizing Cinebench R15 or single-core R23 should favor the AMD chip.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 3 5300U has a boost clock of 3.80 GHz, which is higher than the Intel Core i7-5775C's 3.70 GHz.

Q: How do their average benchmark scores compare?

A: The Intel Core i7-5775C has an average benchmark score of 2224, while the AMD Ryzen 3 5300U has an average score of 2135. This gives the Intel part a slight overall edge in the database's aggregate measure.

Q: Which chip has more L2 cache per core?

A: The AMD Ryzen 3 5300U has 512 KB of L2 cache per core, which is double the 256 KB per core found on the Intel Core i7-5775C.

Q: What is the memory bandwidth difference?

A: The AMD Ryzen 3 5300U supports DDR4 memory and achieves a memory bandwidth of 51.2 GB/s, while the Intel Core i7-5775C supports DDR3 and achieves 25.6 GB/s. The AMD chip has exactly double the bandwidth.

Q: Are both processors unlocked for overclocking?

A: No. The Intel Core i7-5775C has an unlocked multiplier, but the AMD Ryzen 3 5300U does not have an unlocked multiplier.

Q: Which processor has a higher transistor count?

A: The AMD Ryzen 3 5300U has 9,800 million transistors, while the transistor count for the Intel Core i7-5775C is not recorded in the database.

Head-to-Head Benchmarks

The head-to-head data reveals three wins for each side, but the margins tell a nuanced story. The biggest win for the AMD Ryzen 3 5300U comes in Cinebench R15 single-core, where it scores 170 against the Intel's 93. This is a 45.3% deficit for the Intel chip, the largest delta in the entire comparison. The AMD chip also wins Cinebench R15 multi-core with 906 points versus 660, a 27.2% lead. The third AMD win is in Cinebench R23 single-core, scoring 1115 versus 924, a 17.1% advantage.

The Intel Core i7-5775C responds with its own set of wins. In Geekbench multi-core, the Intel chip scores 4989 versus 4035, a 23.6% lead. In Cinebench R23 multi-core, the Intel chip scores 6549 versus 5341, a 22.6% lead. The Intel part also wins Geekbench single-core with 1441 versus 1244, a 15.8% lead.

The data shows that the AMD chip's wins are concentrated in the R15 suite and single-core R23, while the Intel chip wins the multi-core R23 and both Geekbench tests. The largest margin of victory belongs to AMD in R15 single-core, but the Intel chip's wins are consistent across multiple benchmarks. The average score across all tests favors Intel, 2224 versus 2135.

The Cinebench R23 multi-core result is particularly interesting, as it reverses the R15 multi-core result. The Intel chip wins R23 multi-core by 22.6%, but loses R15 multi-core by 27.2%. This suggests the two processors respond very differently to the changes between benchmark versions.

Specification Differences

The two processors differ in nearly every major specification category. The Intel Core i7-5775C is built on a 14 nm process, while the AMD Ryzen 3 5300U uses a 7 nm process. The Intel chip has a die size of 182 mm², while the AMD chip is smaller at 156 mm². The AMD chip has a recorded transistor count of 9,800 million, while the Intel chip's transistor count is not listed.

The base clocks differ: Intel runs at 3.30 GHz, AMD at 2.60 GHz. The boost clocks also differ, with Intel at 3.70 GHz and AMD at 3.80 GHz. The TDP is a stark contrast: 65W for Intel versus 15W for AMD. The sockets are different, Intel Socket 1150 versus AMD Socket FP6. The market segments are different, Desktop for Intel and Mobile for AMD.

The cache configuration differs in L2 and L3. Both have 64 KB of L1 per core, but Intel has 256 KB of L2 per core while AMD has 512 KB. Intel has 6 MB of shared L3, while AMD has 4 MB. Memory support differs: DDR3 for Intel versus DDR4 for AMD. Memory bandwidth is 25.6 GB/s for Intel versus 51.2 GB/s for AMD. PCIe lanes differ: 16 for Intel versus 12 for AMD. The integrated graphics are different: Iris Pro Graphics 6200 for Intel versus Radeon Graphics 384SP for AMD. The launch date differs: May 14, 2015 for Intel versus January 11, 2021 for AMD. The Intel chip has an unlocked multiplier, while the AMD chip is locked. The Intel part has a launch MSRP of $366, while the AMD part has no recorded launch MSRP. The Intel part number is SR2AG, while the AMD part number is 100-000000376.