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SilentiumPC Spartan 5 Max tests under higher load (125 W)

Key parameters

We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

We will not be going back to the design breakdown of the Silentium Spartan 5 Max cooler in this article. That you can find in the earlier analysis in tests on the Core i5-12400. This CPU didn’t trouble the Spartan 5 Max too much even in unlimited power mode at higher clock speeds and around 93 W of input power.

The difference in cooling compared to the Spartan 5, which doesn’t have four heatpipes (like the Spartan 5 Max) but only two, was minimal under such a load. You don’t need a more powerful cooler than the Spartan 5 in these conditions on an Intel platform, it wouldn’t do you any good. At the same noise level, the heating will be virtually the same, even compared to even more powerful coolers, like for example, from the SilentiumPC Endorfy stable, the Fera 5.

However, as the power draw increases, the difference in cooling performance also increases and the larger number of heatpipes starts to show, as the heat needs to be dissipated faster. To find out how the cooler handles higher loads, Pavel Sekerka has tested it using the standard methodology for more powerful models. At 125 watts, the efficiency of the Spartan 5 Max is still very high, holding just behind the Fera 5, even at lower noise levels. Tho older Fera 3, just like many other coolers (including the Arctic Freezer 34 or the Noctua NH-U12S redux), is a less efficient option for such loads across the entire speed spectrum at an equal noise level.

Based on these tests, we can conclude that the Spartan 5 Max is a very attractive choice among the cheaper coolers if you want to use Intel processors with limited power at the TDP level.

Of course, the AMD AM5 platform is also supported and this cooler will be suitable even for lower-end Ryzen 7000 processors that don’t exceed 100 W. Due to the lower heat transfer intensity (compared to Intel Raptor Lake or Alder Lake processors) from small chiplets, the cooling requirements of AMD processors are higher at the same power draw. The Spartan 5 Max is also capable of cooling processors with power draw above 125 W (the specifications state TDP up to 180 W), but only in optimal conditions, to which Intel chips (and TIMs) are closer design-wise.

The Spartan 5 Max did not pass the test mode with 210 W. The Fera 5 is already “on the edge” here too (here it should be emphasized that the values in the graphs are not the actual temperatures, but the difference from the ambient air temperature, i.e. roughly +20–25 ºC), which needs higher speeds. For lower noise at such a high load, there are other, larger coolers.

English translation and edit by Jozef Dudáš



We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

Measurement methodology

As a test processor and heat generator, I am now using an Intel Core i7-11700K on the Asus TUF Gaming Z590-Plus WiFi motherboard. The entire build is mounted on a Streacom BC1 frame with no fans to provide airflow. Acoustic shielding (acoustic foam on OSB boards) is installed around the test setup to eliminate ambient noise.

The Voltcraft SL-100 calibrated noise meter is placed perpendicular to the cooler in a fixed position relative to the motherboard at a distance of approximately 35 cm from the processor socket. Stress tests are performed using Prime95 with a duration of 30–35 minutes. The coolers are tested at three standardized noise levels (36, 39 and 42 dBA) and finally at maximum speed. The tests are run in two sets according to the heat output of the processor.

The first set of tests is at 125 W, the PL1 processor’s enforced limit. The second set of power draw is then about 205–210 W (4500 MHz at 1.285 V). However, this second level represents a very high concentration of heat per mm² due to the small size of the chip itself. Thus, not all coolers can be expected to pass this set of tests at all noise levels. At the end of the test, the highest temperature achieved is always recorded.

All data regarding CPU temperatures and heat output are obtained from the HWiNFO64 application. The measured values are then corrected against the room temperature as the resulting Delta T value. Any higher value means a processor temperature over 95–100 °C and a risk of thermal throttling. Therefore, if the cooler does not pass the load with a Delta T value below 75 °C, such a test is marked as a failure.



We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

Results – 36 dBA


Why is there a missing value in the cooler chart? Either because the cooler could no longer handle the load in the specified mode, or because the fan could not be slowed down to the required level, typically the mode with the lowest noise level.



We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

Results – 39 dBA


Why is there a missing value in the cooler chart? Either because the cooler could no longer handle the load in the specified mode, or because the fan could not be slowed down to the required level, typically the mode with the lowest noise level.



We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

Results – 42 dBA


Why is there a missing value in the cooler chart? Either because the cooler could no longer handle the load in the specified mode, or because the fan could not be slowed down to the required level, typically the mode with the lowest noise level.



We’ve already tested the SilentiumPC Spartan 5 Max CPU cooler, but with a fairly low-power processor. Its results thus merged with the simpler (Spartan 5) model without the “Max” in the name. On more powerful CPUs with more thermal output, however, the situation changes somewhat. How does the Spartan 5 Max compare to other coolers on a processor with 125 W, i.e. at the TDP level of Intel’s “K” models?

Results – maximum speed



Why is there a missing value in the cooler chart? Either because the cooler could no longer handle the load in the specified mode, or because the fan could not be slowed down to the required level, typically the mode with the lowest noise level.