Intel Pentium Gold G6400

The Intel Pentium Gold G6400 is a dual-core, four-thread desktop processor built on Intel's 14nm Comet Lake architecture, operating at a fixed 4.00 GHz base clock with no boost capability. It sits in a peculiar market position, as its average benchmark score of 7019 places it in the 67th percentile of all CPUs, yet its nearest rivals are a mix of high-end HEDT parts and a budget APU, revealing a performance profile that is more nuanced than its modest core count suggests.

Benchmark Performance

The G6400's multi-threaded performance is defined by its 2-core/4-thread configuration, and the Cinebench results show a predictable ceiling. In Cinebench R23, the processor scores 3497 points multi-core and 493 points single-core. The multi-core figure is roughly seven times the single-core score, which is typical for a dual-core part with Hyper-Threading, but it highlights how heavily the chip relies on its 4.00 GHz clock speed to keep up with wider competitors. In the older Cinebench R20 suite, the multi-core score is 1468, while the single-core result is 207, maintaining a similar ratio.

What is more revealing is the PassMark suite, where the G6400 shows uneven results across different workloads. The single-thread score of 2457 is respectable, indicating that the high clock speed pays off for lightly-threaded tasks. However, the multi-thread score of 4118 is only about 1.7 times the single-thread figure, which is low for a processor with four threads. The integer math score of 13941 and floating-point math score of 8788 are modest, but the data compression score of 62806 is surprisingly strong, suggesting that the chip's cache and memory subsystem handle compression algorithms well. Conversely, the find prime numbers score is a mere 17, and the extended instructions score is 1784, both of which indicate weakness in specialized computational tasks.

Comparing the G6400 to its nearest rivals, the average benchmark score of 7019 puts it almost exactly at parity with the Intel Core i9-9960X, which scores 7003, a delta of only 0.2% in favor of the Pentium. Against the AMD Ryzen Threadripper 2990WX, the G6400 trails by 0.3% (7041 vs 7019), and it is 0.5% behind the Intel Core i9-7980XE (7058 vs 7019). These deltas are statistically negligible, meaning the G6400 effectively matches these 18-core and 32-thread behemoths in the aggregate PassMark average score. This is a counterintuitive result, but it reflects the fact that the average benchmark score includes single-threaded tests where the G6400's high clock speed is competitive, and the HEDT parts' massive core counts are not fully utilized across the entire benchmark suite. The only rival it meaningfully beats is the AMD Ryzen 3 3200G, which scores 6948, a 1% advantage for the Pentium.

Power and Thermals

The G6400 carries a TDP of 58 watts, placing it firmly in the mainstream desktop power envelope. This is not an extreme high-performance part nor an ultra-low-power chip; it sits in the middle ground that has historically been occupied by entry-level and mid-range desktop processors. The 58-watt TDP means that a basic air cooler is entirely sufficient for maintaining safe operating temperatures, as the chip does not have a boost clock to generate transient power spikes. The lack of a multiplier unlock further ensures that power draw remains predictable, as there is no overclocking headroom to push voltages higher.

From a thermal management perspective, the 14nm process node is mature and well-understood, and the dual-core design means that heat density is low across the die. The data does not include specific temperature readings, but the combination of a 58W TDP and a 4.00 GHz fixed clock suggests that the processor will run cool under sustained loads, even with a stock cooler. For system builders, this implies that power delivery and cooling can be kept simple and inexpensive, with no need for high-end aftermarket coolers or robust VRM designs on the motherboard. The integrated UHD Graphics 610 further reduces the need for a discrete GPU in basic systems, which also lowers the overall thermal footprint of the build.

Platform and Compatibility

The G6400 is compatible with the Intel Socket 1200 platform, which is the same socket used by Intel's Comet Lake desktop processors. This is a key consideration for upgrade paths, as the socket supports a range of CPUs from the entry-level Pentium and Celeron lines up to higher-core-count Core i7 and i9 parts. The chip uses a dual-channel DDR4 memory bus with a peak bandwidth of 42.7 GB/s, which is standard for this generation. It does not support ECC memory, so it is not suited for error-correcting workloads like NAS systems or entry-level servers.

PCIe support is limited to Gen 3 with 16 lanes available from the CPU. This is adequate for a single discrete graphics card or a couple of NVMe drives via the chipset, but it does not offer the PCIe Gen 4 capabilities found on newer platforms. The integrated graphics are UHD Graphics 610, which is a basic solution intended for office productivity and media playback rather than gaming. The processor is built on the Comet Lake architecture, and it is currently marked as Active in production status, meaning it is still a viable part for new builds. The release date was April 29, 2020, and the part number is SRH3Y. For those looking at the upgrade path, the Socket 1200 platform allows users to move to a higher-core-count Comet Lake CPU without changing the motherboard, provided the BIOS is updated.

Who Should Consider It

Given the benchmark data, the G6400 is best suited for basic office productivity, web browsing, and light media consumption. The single-thread score of 2457 in PassMark indicates that it handles everyday applications with reasonable responsiveness, and the 4.00 GHz clock ensures that tasks like spreadsheet calculations or document editing feel snappy. The data compression score of 62806 is a standout, making this chip surprisingly capable for file archiving and decompression tasks. For users who primarily work with ZIP or RAR files, the G6400 will perform notably better than its core count might suggest.

Gaming is not a strong use case for this processor. The integrated UHD Graphics 610 is not designed for modern 3D titles, and the multi-thread performance is limited, as shown by the Cinebench R23 multi-core score of 3497. While it could handle older or less demanding games at low settings with a discrete GPU, the dual-core design will bottleneck in titles that require more than two cores. The PassMark physics score of 356 reinforces this, as physics calculations in games are typically multi-threaded and heavily loaded. For content creation, the results are mixed: the floating-point math score of 8788 is decent for light photo editing, but the extended instructions score of 1784 and prime numbers score of 17 indicate that heavy video encoding or 3D rendering will be slow. This is not a processor for creative professionals; it is a chip for everyday computing and light productivity.

How It Compares

Against the Intel Core i9-9960X, the G6400 posts a negligible 0.2% advantage in average benchmark score (7019 vs 7003). This is a remarkable result given the i9-9960X's far higher core count, but it is an artifact of the benchmark suite's mix of single-threaded and multi-threaded tests. In purely multi-threaded workloads like Cinebench R23, the i9-9960X would be vastly faster, but the aggregate score shows near-parity, suggesting that the Pentium's high clock speed masks its core deficit in many common tasks.

The comparison to the AMD Ryzen Threadripper 2990WX shows the G6400 trailing by only 0.3% (7041 vs 7019). The Threadripper 2990WX is a 32-thread monster, yet the Pentium loses by a hair in the average benchmark score. This again highlights the G6400's strength in single-threaded performance, where its 4.00 GHz clock is competitive with much more expensive parts. However, the delta is so small that it is within the margin of error, making the two effectively equal in this metric, despite their completely different architectures and intended markets.

The Intel Core i9-7980XE is 0.5% ahead of the G6400 (7058 vs 7019), representing the largest gap among the rivals except for the Ryzen 3 3200G. The i9-7980XE is an 18-core part, and its 0.5% lead in the aggregate score is surprisingly narrow. This suggests that the benchmark average is heavily weighted toward single-threaded and lightly-threaded tests where the Pentium excels, rather than the multi-threaded workloads where the i9 would dominate. The G6400's performance here is a testament to the efficiency of its high clock speed.

Finally, the AMD Ryzen 3 3200G is the closest in terms of market positioning, and the G6400 beats it by 1% (7019 vs 6948). This is the only rival where the Pentium has a clear, if modest, advantage. The Ryzen 3 3200G has a similar core count and is also a budget part, but the G6400's higher clock speed gives it an edge in the aggregate benchmark score. This makes the G6400 a slightly better choice for users who prioritize CPU performance over the Ryzen's integrated graphics, which are not part of the benchmark comparison.