Memory by stefan @ 2022-08-15
As the 16GB sticks, the 32GB versions of the Sabrent Rocket 4800Mhz U-DIMM memory modules have proven to be very overclockable and are the only way to go if you need both speed and huge capacity. By only raising the stock voltage to 1.25V, we managed to get 5800MHz fully stable and the modules barely got warm after the intensive TM5 stress tests.
At first, we would like to thank Sabrent for offering a sample of their Rocket 64GB (2x32GB) 4800MHz DDR5 Memory Kit for testing and reviewing.
“At Sabrent, we create products that help people realize the power of technology and make people’s lives easier and better.
We have a proven track record to consumers and distribution partners, who are part of the rapidly growing Sabrent family.
Deliver the latest technology at an affordable price.
offer a broad product selection, specializing in items that sell.
Maintain large inventory levels and provide same day shipping.
Attractive retail packaging.
Instant live customer service and technical support, including remote access sessions.
No-nonsense product exchanges.
Sabrent’s commitment is to offer the latest technology and the highest quality consumer electronic products at an affordable cost to everyone. Since its founding, Sabrent has consistently delivered to market a full line of computer peripherals and accessories that incorporate style, quality and the latest technologies available.”
Less Voltage, Better Efficiency
DDR5 requires less voltage, which results in lower power consumption than DDR4. On-module power management further increases efficiency and reduces motherboard complexity.
Up To Double the Bandwidth
DDR5 allows for up to double the bandwidth of DDR4, reducing a memory bottleneck. Content creation, gaming, and more will benefit from these rocket-fast speeds.
High Performance
DDR5 has other internal improvements that lead to better overall performance. Make the most of your memory and reach the next level in gaming with these new technologies.
Higher Capacity
DDR5 can have up to four times the capacity in the same space, making sure you never run out of memory again. More is better, especially if you’re juggling sixteen cores or more.
Compatible & Reliable
DDR5 also has improvements to error correction, making sure your experience is consistent and reliable. Further, our memory meets all JEDEC memory standards, so it’s easier than ever to upgrade and be on your way. Installation is always simple and easy, too.
SKU: 2x SB-DR5U-32G
Dimensions
Length: 5.26 in
Width: 1.25 in
Height: 0.13 in
Weight: 0.7 oz
What's in the Box?
DDR5 U-DIMM Memory Module.
User Manual
After the interesting adventure with four Rocket 16GB 4800MHz modules which really put a strain on the memory controller, we figured out that there is another way we could benefit from having 64GB of DDR5 of RAM installed, but while running at higher frequencies: by trying out the Rocket DDR5 32GB modules from Sabrent!
As before, the modules ship in standalone packaging, fully sealed:
On the top cover, we will note the name of the module, learning again that it takes part of the Rocket series. Here we will also find out the capacity of the single memory module:
On the side, Sabrent informs the user that the packaging contains a product for desktops and not for notebooks:
The back area provides the serial number, but also the module code name:
After removing the top packaging layer, we will note an internal enclosure, which opens like a book, being held closed by magnetic force:
The module does sit securely inside a foam material mold, and we will also receive some documentation:
Unexperienced users should follow the written instructions in order not to damage the modules:
As we have seen with the 16GB sticks, the 32GB SKUs carry the same layout, with the heatspreader made of a thin layer of copper, which extends on both sides:
The capacity of the module is also written on the heatspreader, along with the Rocket branding logo:
Nearby, we will find the stock operating speed of the module, and its type:
The back side comes with a larger, central Rocket logo:
A closer look does reveal a QR code, the model code name and we will also be informed that if the copper foil is removed, the warranty is void (basically, if we do aim to remove the thin copper layer, it will be not possible to re-install it afterwards because the glue won’t stick anymore on the ICs):
CPU: Intel i7-12700K @ Stock
CPU Cooler: be quiet! Pure Loop 240mm AIO
Motherboard: EVGA Z690 CLASSIFIED
RAM: currently tested kit
Video: XFX Radeon RX 5700XT Ultra THICC III
Power Supply: Cooler Master 850W
SSD: Silicon Power US70 1TB PCIe 4.0
Case: Cooler Master ATCS 840
The pre-programmed timings and frequencies can be also found by using AIDA64; the DRAM IC manufacturer is listed as SK hynix:
As you have probably noted from the first screenshot, these modules do not come with a pre-loaded XMP profile, so the motherboard will automatically go for the most compatible timing set after the first boot-up. Our Z690 CLASSIFIED from EVGA went for the tightest timings involving the 4800MHz frequency, which are 40-40-40-76; we then went ahead and tested with TM5 the stability:
Naturally, we then went ahead and checked out how far we can go and in order to be on the safe temperature/stability side, we upped the voltage to a maximum of 1.25V as well; 5200MHz was perfectly doable, at the exact same timings!
We were quite surprised to see that the 5400MHz test has passed as well:
Well, this is interesting…the kit was marketed at 4800MHz but can do 5600 this easy?
To our surprise, at the stock clocks 5800MHz was perfectly doable as well:
This is a new one! 4800MHz-rated kit running 6000MHz fully stable at stock timings…there you have it:
6000MHz was quite an impressive end of the road, because with 6200MHz we started having issues booting up.
As the 16GB sticks, the 32GB versions of the Sabrent Rocket 4800Mhz U-DIMM memory modules have proven to be very overclockable and are the only way to go if you need both speed and huge capacity. By only raising the stock voltage to 1.25V, we managed to get 5800MHz fully stable and the modules barely got warm after the intensive TM5 stress tests.
Given the very slim copper heatspreader on the Rocket modules, there is enough space remaining between the DIMMs for air to flow through. These do not come with pre-programmed XMP profiles, but only JEDEC timings for maximum compatibility on different motherboards. To get everything in working order, you may only need to set the operating frequency of the modules, if they won’t run at 4800 via Auto setttings.
The Sabrent website has a very interesting offer right now: buy 2, get 25% off! For getting a total of 64GB of DDR5 4800, you will have to pay about $448.5 from the original $600.
We would like to thank again to Sabrent for making this review possible!