MadShrimps recently wrapped up two reviews featuring 16GB DDR4 kits. The first is the $170 G.SKILL DDR4-3000 kit with two 8GB modules and timings of 15-15-15-35 while the second is the $106 Patriot VIPER 4 Series DDR4-2400 which has four 4GB DIMMs and timings of 15-15-15-35. This provides a great way to compare the performance delta between a quad channel kit with lower frequencies against a dual channel kit with higher frequencies. As they have used the same tests and lowered the G.SKILL to comparable frequencies the results of the charts are quite informative and demonstrate how little performance difference there is between these two kits.
"With the F4-3000C15D-16GVRB Ripjaws V kit from G.SKILL we will have the same memory capacity as the Patriot Viper 4 kit which we have recently reviewed, but with half the number of modules. The higher memory speed of 3000MHz at stock has also an impact on the operating voltage, which is now 1.35V instead of 1.2V and overclocking over this particular speed will usually need some extra voltage adjustments on the CPU side, a solid motherboard and UEFI construction but also a good CPU memory controller."
Here are some more Memory articles from around the web:
- Patriot Viper 4 3400MHz CL16 PV48G340C6K 2x4GB DDR4 @ Modders-Inc
- G.Skill Trident Z 3200 MHz C16 DDR4 (2x 8 GB) @ techPowerUp
- HyperX Fury 2666MHz CL15 HX426C15FBK2 2x8GB DDR4 @ Modders-Inc
- Crucial Ballistix Sport 2400MHz 32GB (4x8GB) Quad Channel @ eTeknix
On a modern dual channel
On a modern dual channel memory controller, why would we expect a performance delta (at the same frequencies and timings) between a four module kit and a two module kit?
Comparing the two reviews, there’s (as expected ) no functional performance difference between the kits other than that one reaches frequencies the other doesn’t, so the review of the faster kit makes that of the slower one redundant …
Obviously this would be different if the tests were on a CPU with a memory controller having more than 2 channels.
There’s no real difference at
There's no real difference at the higher speeds either, I was more reminded of the old discussions about whether adding extra DIMMs would cause any noticeable increase in latency when I was looking at the review.