AGi UD858 DDR5 TURBOJET RGB (DDR5-6000 CL30) Review – A Hidden Gem

Unboxing & Walkaround

We previously reviewed a similar module from AGI before, which is the DDR5-6800 variant of the UD858 series; for this review we’re looking at the DDR5-6000 version with timings CL30-40-40-96 out of the box. One thing to note, the timings were not printed on the label for some reason, which could be a production mistake.

RGB is available, which must be configured via your host system’s motherboard software. By default, the modules have the tendency to drift off sync, so some manual configuration will be required here if you want to tidy up the lighting effects.

Specifications

AGi UD858 DDR5 TURBOJET RGB (DDR5-6000 CL30)

Full specifications available in product webpage and datasheet.

Model Number	AGI6AWG16UD858
Frequency	6000MT/s
Primary Timings	CL30-40-40-96
Voltage	1.3V
Capacity	16GB x2
Dimensions	133.35 x 37.0 x 7.7 mm

Test System

CPU	Intel Core i9-13900K
Cooling	Cooler Master MasterLiquid PL360 Flux 30th Anniversary Edition Cooler Master MasterGel Maker
Motherboard	ASUS ROG Maximus Z790 HERO
GPU	NVIDIA GeForce RTX 3080 Ti Founders Edition
Memory	AGi UD858 DDR5 TURBOJET RGB (DDR5-6000 CL30)
Storage	ADATA LEGEND 960 MAX 1TB
Power Supply	GameMax Rampage GX-1050 PRO (ATX 3.1) 1050W
Case	VECTOR Bench Case (Open-air chassis)
Operating System	Windows 11 Home 23H2

Overclocking

Starting with the baseline at 6000MT/s CL30-40-40-96 at 1.3 volts, there’s no issues detected throughout the 30-minute memory stress test. Memory latency measures at 72.2 nanoseconds, with 93.5GB/s read, 83.0GB/s write, and 85.4GB/s copy speeds recorded on the AIDA64 benchmark.

Knowing the capabilities of the DDR5-6800 module we previously tested, the first run we used a very aggressive overclock with a clock speed bump while leaving timings untouched (though voltage is increased to give it the best chance for stability). This guarantees a performance increase, leaving the stability as the only factor – but unfortunately it didn’t take long for the modules to start complaining.

Next run we dialed it back just ever so slightly, by simply adjusting the primary timing to CL32, and the rest is once again untouched. And it worked! Latency is now 70.2 nanoseconds, a 3.8% reduction; all bandwidth measurements have seen a roughly 5% increase as well. With this successful run, let’s crank the dial even higher next.

While we’re cranking the clock speed all the way to 6800MT/s this time, we decided to go more conservative and loosen the additional timings as well (aside from the CAS Latency, a.k.a. the first CL value). In fact, this timing is tighter than the DDR5-6800 module we tested at stock overclock profiles (which ran at CL34-45-45-108), so that’s already quite impressive for this set of modules that ran at just 6000MT/s stock.

We tried going further to 7200MT/s but to no avail, loosening the timings didn’t help. Dialing it back to 7000MT/s while retaining the CAS Latency to 34 (so we don’t end up having worse latency over our last configuration if we stick to CL36), there’s still too little stability to make this overclock work.

Verdict

Just like it’s DDR5-6800 counterpart we tested, the AGI UD858 DDR5-6000 is a very capable overclocker with some good performance to be extracted if you’re patient enough to play with the dials and knobs in the BIOS settings. Unfortunately, we can’t find the exact pricing of this particular module (even in Taiwan – its home market), most likely that this model is discontinued to make way for faster modules. If that is not the case, we expect the pricing to be somewhere around 4,000 NTD, slightly lower than what the 6400MT/s counterpart is currently sold for.

Malaysian buyers won’t have access to this brand’s RAM modules for now, but during our conversation with the AGI reps on-site they stated their intention to enter Malaysian market at some point in the future. It’s hard to say when that will be, but if they do, it’s reasonable to expect cheap prices if Taiwan’s local pricing is any indication.

Special thanks to AGi Technology for providing this set of UD858 DDR5 TURBOJET RGB modules for this review.