Corsair Dominator Titanium First Edition DDR5-6600 C32 2x32GB Review: Abundant Capacity And Performance

Today, we have the 64GB Corsair Dominator Titanium First Edition DDR5-6600 C32 kit on our test bench as it vies for a spot on our list of the best RAM. Manufacturers have worked hard to improve the density of the integrated circuits (ICs) that power memory modules. With DDR5, the launch of 24Gb (3GB) DDR5 ICs has dramatically enhanced the density per memory module, adding non-standard capacities, such as 24GB and 48GB options, to the mix. It represents a massive improvement for owners of motherboards that are limited to just two DDR5 memory slots. 

Modern dual-DIMM motherboards possess the faculty to lodge up to 96GB (2x48GB) of memory, 50% more than the previous 64GB (2x32GB) configuration. By today's standard, 64GB is still plenty of memory, even if you're a professional or content creator. Therefore, 64GB memory kits, like the Dominator Titanium First Edition DDR5-6600 C32, will never fall out of favor - at least not for many years.

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The Dominator Titanium series is another testament that Corsair cannot make ugly memories. The austere aluminum heat spreader comes in a single color with a matte finish. Intel users are the more fortunate since they can choose between white or black. AMD users, on the other hand, are left with the grey theme. It's good to see that Corsair has kept the marketing to a minimum on the Dominator Titanium memory. The "First Edition" versions, with only 500 units available, will come with the lot number inscribed on the bottom right of the heat spreader.

The last couple of Dominator iterations stood tall, and the new series continues the tendency. Checking in at 57mm (2.24 inches), it's highly recommended that you measure the clearance space underneath your CPU air cooler. However, it's refreshing to see Corsair trying something new with the Dominator Titanium series: interchangeable top bars.

The top bar of the Dominator Titanium is removable via two tiny screws. The vanilla memory kits will come with the RGB diffuser, illuminated by 11 bright RGB LEDs that you can manage individually with Corsair's included iCUE software. The RGB diffuser communicates with the memory through a small reversible connector. Nonetheless, Corsair still offers the old-school design with cooling fins for $29.99. If you own a 3D printer, you can make your top bar. The Dominator Titanium First Edition memory kits include the fin top bar and the necessary tools to replace and install it.

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Corsair utilizes a custom PCB for the Dominator Titanium memory modules. The reason is that the manufacturer has integrated the RGB connector onto the PCB so the corresponding header from the RGB diffuser slots into it effortlessly. It's a different approach from what we're usually accustomed to, such as having the RGB LEDs on the memory module's PCB or having the RGB diffuser connected to the PCB with a ribbon cable.

The memory kit has a total capacity of 64GB, constituted by two 32GB DDR5 memory modules. These sport a dual-rank design with eight integrated circuits (ICs) on each side of the PCB. Corsair is employing SK hynix H5CG48AGBDX018 (A-die) ICs that are 4GB each. Corsair sourced the 0P=AC UG6 power management IC (PMIC) from Richtek, one of the leading IC manufacturers.

Like any other DDR5 memory, the Dominator Titanium runs at DDR5-4800 by default with 40-40-40-77 timings. Unlike many brands that only provide a single XMP 3.0 profile, Corsair inserted two into the memory modules. One profile is naturally for DDR5-6600 with 32-39-39-76 and 1.4V. The other profile overclocks the memory to DDR5-6800 and sets the timings and DRAM voltage to 32-40-40-96 and 1.45V, respectively. See our PC Memory 101 feature and How to Shop for RAM story for more timings and frequency considerations.

Comparison Hardware

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The Intel system runs the Core i9-13900K on the MSI MEG Z690 Unify-X with the 7D28vAA firmware. In contrast, the AMD system pairs the Ryzen 7 7700X with the MSI MPG X670E Carbon WiFi changed to the 7D70v18 firmware. The Corsair CUE H100i Elite LCD liquid cooler keeps our Raptor Lake and Zen 4 processor operating temperatures under check.

The MSI GeForce RTX 4080 16GB Gaming X Trio tackles the more graphics-intensive workloads, ensuring that there isn't a graphics bottleneck in our gaming RAM benchmarks. The Windows 11 installation, benchmarking software, and games reside on Crucial's MX500 SSDs. Meanwhile, the Corsair RM1000x Shift ATX 3.0 power supply provides our systems with clean and abundant power, directly feeding the GeForce RTX 4080 with a native 16-pin (12VHPWR) power cable. Lastly, the Streacom BC1 open-air test bench is vital to organizing our hardware.

Intel Performance

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Predictably, the Dominator Titanium memory kit fell behind the DDR5-7200 memory kits regarding cumulative application performance. It excelled in the Adobe Premiere, where the added capacity gave it an edge over the 32GB (2x16GB) memory kits. The Dominator Titanium was up to 3.7% faster than the DDR5-7200 memory kits.

AMD Performance

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Corsair's memory kit flipped the script on the competition on the AMD platform and outperformed the DDR5-7200 memory kits. It increased the performance delta to 5.6% on Adobe Premiere. The Dominator Titanium only trailed the Trident Z5 RGB DDR5-6400 C32 memory kit, which was running in a 1:1 unified memory controller clock (UCLK) to memory clock (MEMCLK) ratio.

Overclocking and Latency Tuning

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Overclocking dual-rank memory modules are more difficult than pushing the single-rank counterparts. Not even SK hynix's revered A-die ICs can break the mold. Raising the DRAM voltage to 1.45V only of us to DDR5-6800 with 34-39-39-76 timings. It's comparable to the Dominator Titanium's onboard DDR5-6800 overclocking profile (32-40-40-96) that prioritize the CAS Latency (CL) over the other memory timings.

Lowest Stable Timings

Expectations weren't high for optimizing the Dominator Platinum at DDR5-6600. While SK hynix A-die ICs are great for hitting high frequencies, they don't really run at tight timings. Applying a 1.45V DRAM voltage only allowed us to lower the tRCD, tRP, and tRAS from 39-39-76 to 37-37-76.

Bottom Line

You can never have enough system memory whether you're a professional, prosumer, content creator, or streamer. If you need a fast memory kit with the capacity for serious multitasking, the Dominator Titanium First Edition DDR5-6600 C32 fits the bill just fine. Many will appreciate that Corsair even went the extra mile to provide an overclocked DDR5-6800 profile to squeeze some extra performance out of the memory kit. The interchangeable is a nice touch to the Dominator Titanium's design, but each top bar accessory kit will set you back $29.99.

Being a First Edition memory kit, the Dominator Titanium First Edition DDR5-6600 C32 is available exclusively on Corsair's online store for a whopping $349.99. If you don't care for the additional fin accessory, the regular memory kit retails for $329.99. It's a steep price tag, but the thing is that Corsair has the early-comer advantage. Corsair is currently the only vendor that sells DDR5-6600 64GB memory kits on the market. That's slim pickings for consumers who want a memory kit of that specific data rate and capacity.

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