AMD Ryzen Embedded V1807B vs Intel Core i5-8400T Comparison

The AMD Ryzen Embedded V1807B and Intel Core i5-8400T are both locked, 14nm desktop processors from 2018, but they are engineered for entirely different missions. The AMD chip is a 45W part with a Radeon RX Vega 11 integrated GPU, while the Intel chip is a 35W part with UHD Graphics 630. Benchmark data shows the AMD part winning every single head-to-head test, but the Intel chip counters with a lower power draw, more physical cores, and a larger shared L3 cache. The data paints a clear picture: the V1807B is the performance king, while the i5-8400T is the efficiency-focused alternative.

Where Each One Wins

The AMD Ryzen Embedded V1807B wins every performance contest in the benchmark suite. Its six head-to-head victories are spread across both single-core and multi-core workloads, giving it a clean sweep. In multi-threaded rendering tasks like Cinebench R23, the V1807B scores 6957 against the i5-8400T’s 6282, a 10.7% advantage. This is notable because the Intel part has two more physical cores (6 vs 4), yet the AMD chip’s simultaneous multithreading (8 threads vs 6) and higher boost clock help it pull ahead. The V1807B also dominates single-thread performance, with a 10.8% lead in Cinebench R23 single-core (982 vs 886). That consistency suggests the AMD architecture is simply more efficient per clock in these tests.

The Intel Core i5-8400T’s wins are not in raw performance but in operational characteristics. It has a 35W TDP versus the AMD’s 45W, meaning it draws less power under load. It also includes a memory bandwidth figure of 42.7 GB/s, which the AMD entry lacks, hinting at a more complete memory subsystem specification. The Intel part also offers a 9 MB shared L3 cache, which is more than four times the AMD’s 2 MB. For workloads that are cache-sensitive, the Intel chip could be the better choice, even if the benchmark data does not reflect it in these specific tests. The i5-8400T also has a Gen 3 PCIe implementation with 16 lanes, while the AMD part’s PCIe configuration is unlisted, leaving that as a potential advantage for the Intel chip in expansion scenarios.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen Embedded V1807B uses the Zen architecture on a 14nm process manufactured by GlobalFoundries, with a die size of 210 mm² and 4,950 million transistors. It is part of the Ryzen Embedded series, specifically the “Great Horned Owl” generation. The Intel Core i5-8400T uses the Coffee Lake architecture, also on 14nm but fabricated by Intel, with a smaller die size of 154 mm². The transistor count for the Intel chip is not listed, but the smaller die suggests a simpler layout.

Core configurations differ significantly. The AMD part has 4 cores and 8 threads, a classic simultaneous multithreading setup, while the Intel part has 6 physical cores and 6 threads, with no hyper-threading. This gives the Intel chip two additional physical cores but two fewer logical threads. The AMD chip compensates with higher clock speeds: its base clock is 3.35 GHz and boost is 3.80 GHz, while the Intel base clock is a very low 1700.00 MHz (1.7 GHz) with a boost of 3.30 GHz. The Intel chip’s base clock is notably low, likely to keep power consumption down at the 35W TDP.

Cache hierarchies are also divergent. The AMD chip uses a per-core L1 of 128 KB and L2 of 512 KB, with a shared L3 of 2 MB. The Intel chip has smaller per-core caches (64 KB L1, 256 KB L2) but a much larger shared L3 of 9 MB. This means the Intel part can hold more shared data, which may benefit certain multi-threaded workloads, though the benchmark results do not show it. Both support DDR4 memory in a dual-channel configuration, and neither supports ECC memory. The AMD part’s integrated graphics is Radeon RX Vega 11, while the Intel part uses UHD Graphics 630, with no direct benchmark comparison available.

Head-to-Head Benchmarks

The benchmark results are unambiguous: the AMD Ryzen Embedded V1807B wins all six recorded tests. The smallest margin is in Cinebench R15 single-core, where the AMD scores 98 against the Intel’s 89, a 10.1% difference. The largest margin is 10.8%, seen in both Cinebench R20 single-core (412 vs 372) and Cinebench R23 single-core (982 vs 886). Multi-core tests show a consistent 10.7% lead for the AMD part across R15, R20, and R23. In Cinebench R15 multi-core, the scores are 701 vs 633; in R20, they are 2921 vs 2638; and in R23, they are 6957 vs 6282.

These results are notable because the Intel chip has more physical cores. The fact that the AMD part wins multi-core tests by over 10% suggests that its higher clock speeds and SMT implementation outweigh the Intel chip’s two extra cores. The single-core results are even more telling, with the AMD part leading by over 10% in every generation of Cinebench. This indicates a clear per-clock advantage for the Zen architecture in these workloads.

The average benchmark scores tell a similar story. The AMD chip has an average benchmark score of 2012, while the Intel chip is at 2001. Both sit at the 45th percentile among all CPUs. The AMD part’s nearest rivals include the AMD Ryzen 7 1700 (delta of -0.1%) and the Intel Core i5-8300H (delta of 0.3%), while the Intel part’s nearest rivals include the AMD Ryzen 7 2800H (delta of 0%) and the Intel Core i5-8400H (delta of -0.1%). This places both chips in a similar performance tier, despite the head-to-head differences.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The AMD Ryzen Embedded V1807B wins all three multi-core tests. It leads by 10.7% in Cinebench R15 (701 vs 633), R20 (2921 vs 2638), and R23 (6957 vs 6282), despite the Intel chip having six physical cores versus four.

Q: Does the Intel Core i5-8400T have any benchmark advantage?

A: No. In the six head-to-head benchmarks recorded, the Intel chip wins zero. The AMD part wins all six, with margins ranging from 10.1% to 10.8%.

Q: How do their power requirements compare?

A: The Intel Core i5-8400T has a lower TDP of 35W, while the AMD Ryzen Embedded V1807B is rated at 45W. This means the Intel chip is designed to consume less power under load.

Q: What is the difference in L3 cache size?

A: The Intel chip has a 9 MB shared L3 cache, while the AMD chip has only 2 MB shared L3. This is a significant difference that could affect cache-sensitive workloads, though the benchmark data shows the AMD part winning regardless.

Q: Are both processors unlocked for overclocking?

A: No. Both the AMD Ryzen Embedded V1807B and the Intel Core i5-8400T have locked multipliers, meaning neither supports user-overclocking.

Q: What is the release date for each chip?

A: The AMD Ryzen Embedded V1807B was released on February 20, 2018, and the Intel Core i5-8400T was released on April 1, 2018. The AMD part is still marked as active in production, while the Intel part is listed as end-of-life.

Specification Differences

The two processors differ in several key specifications. The AMD Ryzen Embedded V1807B has 4 cores and 8 threads, while the Intel Core i5-8400T has 6 cores and 6 threads. The AMD base clock is 3.35 GHz and boost is 3.80 GHz, whereas the Intel base clock is 1700.00 MHz (1.7 GHz) and boost is 3.30 GHz. The AMD TDP is 45W, while the Intel TDP is 35W. The AMD socket is AMD Socket FP5, and the Intel socket is Intel Socket 1151. The AMD architecture is Zen (codename “Great Horned Owl”), while the Intel architecture is Coffee Lake.

The process nodes are both 14nm, but the foundries differ: GlobalFoundries for AMD and Intel for the i5-8400T. The AMD die size is 210 mm² with 4,950 million transistors, while the Intel die size is 154 mm² with no listed transistor count. L1 cache is 128 KB per core for AMD and 64 KB per core for Intel; L2 cache is 512 KB per core for AMD and 256 KB per core for Intel; L3 cache is 2 MB shared for AMD and 9 MB shared for Intel. The integrated graphics are Radeon RX Vega 11 for AMD and UHD Graphics 630 for Intel.

The Intel part has a listed memory bandwidth of 42.7 GB/s, while the AMD part does not list a bandwidth figure. The Intel chip also has a PCIe specification of Gen 3 with 16 lanes (CPU only), while the AMD chip has no PCIe data provided. The production status differs: AMD is active, Intel is end-of-life. The Intel part has a launch MSRP of $182, while the AMD part has no listed launch MSRP. The Intel part number is SR3X6, while the AMD part number is not listed. Both support DDR4 dual-channel memory, neither supports ECC, and both have locked multipliers.