SPD Information
As we know, we can find almost all information about a RAM module in the SPD. Besides the already known product number, module capacity and specified clock rate, we once again find confirmation about the used memory modules with manufacturer SK Hynix and Stepping A-Die. At this point, it should be mentioned that Corsair has included this information in the SPD, which is unfortunately not a matter of course.
As usual for 16 GB DDR5 modules, it is a single-rank layout with 8 ICs per x8 bit width, which results in the total 64-bit of the module. These are then again divided into the two 32-bit subchannels, as it has been standard since DDR5.
Important for overclocking is the installed PMIC and whether it supports more than 1.435 V for VDD and VDDQ. With an XMP profile specified to 1.45 V, this is of course to be assumed, but here we find confirmation once again. It is a PMIC5100 types from Richtek Power, which can deliver more than 1.435 V in 10 mV steps.
The XMP profile also contains the VPP voltage with 1.8 V and the VDD2 or memory controller voltage with 1.2 V, as well as the subtimings tRFC2 576 (160 ns), tRFCpb 468 (130 ns) and tWR 108 (30 ns). Since it is a kit with 2 modules, only the operation in “1 DIMM per channel” is recommended or officially supported. The screenshot shows the fully loaded XMP profile via the “XMP II” option of the Asus Maximus Z790 Hero motherboard, as well as the automatically configured additional subtimings.
Heatsink test
As usual, we continue to test the cooling solution of the working memory modules and how much thermal potential is available for overclocking accordingly. Implicitly, of course, this also tests whether a kit survives the stress test in XMP operation at all without becoming unstable – yes, that also happens sometimes!
In the display, I now no longer use a curve over the test duration, but a simplified display of the maximum temperature. It doesn’t really matter whether the highest temperature is reached after 10 or 30 minutes for the stability test. Testing is done with a Type K temperature sensor between the RAM cooler and the PCB of the warmer module directly next to a RAM IC.
With the stress test Testmem5 v0.12 and the profile “Extreme1@Anta777” and without a slot distance between the modules, the highest possible heat load is generated. Together with another temperature sensor on the testbench, the delta to the ambient temperature is determined, once passively cooled and once actively cooled with a 120 mm fan, which lies directly on the modules and blows downwards at 2000 rpm.
Despite having the highest voltage of any XMP kit we’ve had the pleasure of testing, the 7200 Dominator kit comes in second in passively cooled mode, beaten only by the 6600 Dominator kit with the same cooler and lower voltage. However, if you point a fan at the modules, the Dominator coolers with their wide design have a disadvantage, because simply not enough air gets between the modules. Overall, though, the cooler does a good job, as you would expect given its size and build.
For better visibility the manufacturers and product names of the ram kits use abbreviations as follows:
- CDPR: Corsair Dominator Platinum RGB
- TGDR: Teamgroup DELTA RGB
- CVR: Corsair Vengeance RGB
- GSTZ5R: G.Skill Trident Z5 RGB
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