Patriot Viper Steel Series 16GB (2x8GB) DDR4-4400MHz Memory Kit Review

Test Rig

For our tests, we used our Test Rig which consists of an EVGA Z370 Micro motherboard, along with and Intel Core i7-8700K (Coffee Lake) and a Zotac GeForce GTX 2070 (8GB GDDR6) graphics card. 


* ALL tests are conducted at specified default speeds and settings.

CPU Intel Core i7-8700K @ 3.7GHz / Turbo boost 4.3GHz
Cooling Corsair H115i AIO cooler
Motherboard EVGA Z370 Micro
Ram Patriot Viper Steel DDR4-4400 16GB Memory Kit
XMP 2.0 profiles Memory timings : 19-19-19-39 @1.35v (2x8GB)
SSD Patriot Hellfire  –  240GB
PSU Cooler Master GXII 750W
VGA card Zotac GeForce RTX 2070 (8GB GDDR6)
Windows 10



The EVGA Z370 Micro motherboard only has 2 DIMM slots, so once we installed the pair of Patriot Viper Steel memory modules, there’s no room to add any more. 


BIOS Setup

We used the EVGA Z370 Micro motherboard … and It couldn’t be simplier. Selecting XMP Profiles will give you a memory to 4133 MHz by default. However, when I tried to set the speed to 4400 MHz, it failed to boot 🙂

I’d expect you’ll be able run these memory module at the rated speed of DDR4-4400 using the Asus ROG Maximus XI Apex motherboard. 

Using the EVGA Z370 Micro motherboard, the furthest I could take these memory modules to was DDR4-4300, which was close enough. DIMM voltage and DRAM timings were left on AUTO and untouched. There’s no real need to adjust anything here.


CPU-Z and SPD Information

CPU-Z reports the ram speed at 2150MHz, that’s DDR4-4300 spec … 

Ram timings is correctly shown at 19-19-19-39. Notice the memory ICs are made by Samsung and they are certified XMP 2.0.



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Winston has over 20 years of experience in the I.T. Industry. He launched Funky Kit with the aim to capture a wider audience worldwide. His knowledge in PC hardware is very distinguished, not only publishing enjoyable reviews but also writing great articles.