AMD Ryzen 3 3300X vs Intel Core i5-1145G7E Comparison

The Intel Core i5-1145G7E and AMD Ryzen 3 3300X are both 4-core, 8-thread processors from 2020, but they target different corners of the market: one is a low-power mobile part, the other a high-clocked desktop chip. The benchmark data available shows a decisive advantage for the AMD part in the shared Cinebench tests, yet the Intel chip holds its own in the overall average score due to results from other workloads. This analysis breaks down where each processor excels, the architectural gulf between them, and what the numbers mean for real-world selection.

Where Each One Wins

The AMD Ryzen 3 3300X wins every head-to-head benchmark that both processors share. In the two Cinebench tests available for direct comparison, the Ryzen 3 3300X takes both the multi-core and single-core victories with substantial margins. The data shows a 29.3% lead in Cinebench R15 multi-core and a 45.6% lead in Cinebench R15 single-core. This is a clean sweep for AMD in the direct comparison, with the Intel Core i5-1145G7E failing to win a single shared test.

However, the story does not end with the head-to-head results. The Intel Core i5-1145G7E has a broader benchmark portfolio that includes Cinebench R20 and R23 scores, while the AMD Ryzen 3 3300X has Geekbench results. The Intel chip's average benchmark score of 2174 is actually slightly higher than the AMD chip's 2148, despite losing the direct comparisons. This suggests that the Intel part's performance profile is more balanced across different workload types, while the AMD chip's wins are concentrated in the Cinebench suite. For users running Cinebench specifically, the Ryzen 3 3300X is clearly superior; for a wider range of tasks, the Intel chip may be closer than the head-to-head suggests.

Architecture Differences

The two processors could not be more different in their design philosophies. The Intel Core i5-1145G7E is built on Intel's 10 nm process with the Tiger Lake architecture, specifically the Tiger Lake-U codename. It has a base clock of 1500 MHz and a boost clock of 4.10 GHz, with a TDP of just 28 watts. This is a mobile-focused part, socketed into Intel BGA 1449, and it includes integrated Iris Xe Graphics G7 with 80 execution units. The cache layout is distinctive: 80 KB of L1 per core, 1.25 MB of L2 per core, and 8 MB of shared L3 cache. The die size is 144 mm², and it supports DDR4 and LPDDR4X memory on a dual-channel bus. PCIe support is Gen 4 with only 4 CPU lanes, reflecting its mobile positioning.

In contrast, the AMD Ryzen 3 3300X is a desktop processor built on TSMC's 7 nm process with the Zen 2 architecture, codenamed Matisse. It has a much higher base clock of 3.80 GHz and a boost clock of 4.30 GHz, with a TDP of 65 watts. It uses the AMD Socket AM4 and has no integrated graphics, requiring a discrete GPU. The cache configuration is different: 64 KB of L1 per core, 512 KB of L2 per core, and a larger 16 MB of shared L3 cache. The die size is just 74 mm², with 3,800 million transistors. Memory support is DDR4 on a dual-channel bus with a theoretical bandwidth of 51.2 GB/s. PCIe support is Gen 4 with 16 CPU lanes, offering far more expansion capability. The AMD chip also has an unlocked multiplier, making it overclockable, while the Intel part is locked.

The process node difference is significant: 10 nm for Intel versus 7 nm for AMD, with the latter using a smaller die despite having more cache. The AMD chip's higher clocks and larger L3 cache are key factors in its benchmark dominance, while the Intel chip's lower TDP and integrated graphics make it suitable for compact, power-constrained systems.

Head-to-Head Benchmarks

The shared benchmark data consists of two Cinebench R15 tests, and the AMD Ryzen 3 3300X dominates both. In Cinebench R15 multi-core, the AMD chip scores 1071 against the Intel chip's 757, a delta of -29.3% for the Intel part. This is a substantial margin, showing that the Ryzen 3 3300X is roughly 41% faster in this workload. The single-core test is even more lopsided: the AMD chip scores 195 against the Intel chip's 106, a delta of -45.6%. This means the AMD chip is more than 83% faster in single-core performance, a remarkable gap that highlights the clock speed and architecture advantage.

These results are consistent with the hardware differences. The AMD chip's 3.80 GHz base clock is more than double the Intel chip's 1.50 GHz base clock, and its 4.30 GHz boost is also higher than the Intel's 4.10 GHz. The larger 16 MB L3 cache on the AMD chip likely helps with memory latency in these workloads. The Intel chip's lower TDP of 28 watts is clearly a limiting factor, as it cannot sustain high clocks for extended periods in a mobile thermal envelope.

Looking beyond the head-to-head, the Intel chip's other scores provide context. Its Cinebench R20 multi-core score is 3156, and single-core is 445; in R23, it scores 7516 multi-core and 1061 single-core. These numbers indicate that the Intel chip's performance scales reasonably well in newer Cinebench versions, but the AMD chip's R15 results suggest it would likely maintain its lead. The AMD chip's Geekbench scores of 5772 multi-core and 1555 single-core are not directly comparable to Cinebench, but they do show a strong single-core showing that aligns with its R15 performance.

The Intel chip's average benchmark score of 2174 places it in the 47th percentile of all CPUs, with its nearest rivals including the AMD Ryzen 5 3400GE (delta 0%) and Intel Core i7-1185GRE (delta -0.2%). The AMD chip's average score of 2148 also places it in the 47th percentile, with nearest rivals including the Intel Core i5-10200H (delta -0.3%) and Intel Core i7-5950HQ (delta -0.4%). Both chips are closely matched in overall standing, despite the head-to-head disparity.

The Verdict

The data is unambiguous for anyone prioritizing raw Cinebench performance: the AMD Ryzen 3 3300X is the clear winner. Its 29.3% and 45.6% leads in the shared multi-core and single-core tests, respectively, are decisive. The higher base and boost clocks, combined with the larger L3 cache and 7 nm process, give it a significant edge in CPU-bound workloads. For a desktop user who needs maximum compute throughput and has a discrete GPU, the Ryzen 3 3300X is the obvious choice from this data.

However, the Intel Core i5-1145G7E serves a different purpose entirely. Its 28-watt TDP, integrated Iris Xe Graphics, and compact BGA socket make it suitable for thin-and-light laptops or embedded systems. The fact that its average benchmark score (2174) is slightly higher than the AMD chip's (2148) indicates that it performs competitively in a broader range of tests, even if it loses the shared Cinebench battles. The Intel chip also supports LPDDR4X memory, which is not available on the AMD part, and its 4-lane Gen 4 PCIe is sufficient for mobile workloads.

The choice comes down to platform and power envelope. If the requirement is a low-power, mobile processor with integrated graphics, the Intel Core i5-1145G7E is the only option of the two, and its benchmark scores are respectable for its class. If the requirement is a desktop processor with maximum performance in Cinebench-style workloads, the AMD Ryzen 3 3300X wins outright. The data does not support using the Intel chip in a desktop scenario where the AMD chip is available, given the latter's superior performance in every shared test.

FAQ

Q: Which processor has a higher single-core score in Cinebench R15?

A: The AMD Ryzen 3 3300X scores 195, which is 45.6% higher than the Intel Core i5-1145G7E's 106.

Q: What is the TDP difference between the two chips?

A: The Intel Core i5-1145G7E has a TDP of 28 watts, while the AMD Ryzen 3 3300X has a TDP of 65 watts.

Q: Does the AMD Ryzen 3 3300X have integrated graphics?

A: No, the AMD Ryzen 3 3300X has no integrated graphics, whereas the Intel Core i5-1145G7E includes Iris Xe Graphics G7 with 80 execution units.

Q: What is the launch MSRP of each processor?

A: The Intel Core i5-1145G7E has a launch MSRP of $312, and the AMD Ryzen 3 3300X has a launch MSRP of $120.

Q: Which chip has more L3 cache?

A: The AMD Ryzen 3 3300X has 16 MB of shared L3 cache, while the Intel Core i5-1145G7E has 8 MB of shared L3 cache.

Q: Are both processors in the same performance percentile?

A: Yes, both the Intel Core i5-1145G7E and the AMD Ryzen 3 3300X are in the 47th percentile of all CPUs, despite their different benchmark results.