Corsair Dominator Platinum PC3-17066 C9 2x4 GB (CMD8GX3M2A2133C9)
We had some special hopes about the CMD8GX3M2A2133C9 kit which consists of two 4GB DDR3-2133 modules. This high-speed memory comes with aggressive timings and a voltage of 1.5 volts. Based on highly promising Samsung chips, it seemed to require a higher voltage and relaxed timings in order to reach much higher clock rates. We were disappointed, however. This kit couldn’t work at 2400 MHz, so we had to content ourselves with DDR3-2200 mode.
Of course, the 66MHz increase in frequency isn’t high at all, so it is not surprising that this kit was stable in DDR3-2200 mode with timings of 9-10-10-27-1T which were somewhat better than the specified ones. However, we have to admit that the junior products of the Dominator Platinum series do not overclock well. High-speed memory is more expensive and Corsair leaves no way for overclockers to save some money.
Corsair Dominator Platinum PC-19200 C10 2x8 GB (CMD16GX3M2A2400C10)
If the junior models of the Dominator Platinum series are not very good at overclocking, we can hardly expect the top-end products to be any better. They work at their best even at their default settings. The CMD16GX3M2A2400C10 illustrates this fact very well. We couldn’t overclock this DDR3-2400 kit at all.
The specified settings are indeed the best settings this kit is stable at. It is not because it consists of 8GB modules. In our previous reviews we could see dual-channel 16GB kits overclock no worse than their 8GB counterparts.
Corsair Dominator Platinum PC-21300 C11 2x4 GB (CMD8GX3M2A2666C11)
The fastest memory kit of this review, CMD8GX3M2A2666C11, is similar to the CMD16GX3M2A2400C10 in having zero overclocking potential. We could not overclock this 2x4GB DDR3-2666 kit above its rated frequency.
Well, we managed to lower one of the basic timings, RAS# Precharge Delay, from 13 to 12, but this can hardly have a noticeable effect on performance. The lack of any overclocking potential might be expected because DDR3-2666 and similar modules are already overclocked to their best. Every high-speed DDR3 module is going to behave like that.
The results of our overclocking experiments are summed up in the following table:
So, the Dominator Platinum series doesn’t overclock well. These memory kits are excellent in the specified mode but won’t work if you increase their frequency or improve their timings much compared to their specs.