DDR5 6000 CL30 is the best choice.

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Like someone mentioned, 32GB at 6000MHz is basically the sweet spot for the 9070, but i would suggest being really cautious about the specific kit you pick. If you want this build to stay rock solid for years, stability is way more important than chasing the tightest timings possible. Before you buy anything, make sure to look at these:

• Your motherboard manufacturer's QVL (Qualified Vendor List) to see which kits they actually tested.
• The Buildzoid / Actually Hardcore Overclocking videos for deep dives on memory stability.
• Stress testing tools like OCCT or MemTest86 to run once you get everything installed. I've seen way too many people just grab whatever is on sale and then wonder why their games crash once a week. Checking that QVL is honestly the best way to save yourself a massive headache later on. Let me know if you need help finding the compatibility list for your specific board tho, i'd be glad to look it up with you.

Yo, if youre building around an RX 9070, you definitely want to look at the sub-timings and the ICs used. While everyone jumps to G.Skill, Ive found Corsair Vengeance RGB 32GB DDR5 6000MHz CL30 to be rock solid with EXPO profiles lately. Their voltage regulation is usually pretty tight which helps with system stability during long sessions. Another sleeper pick is the TeamGroup T-Force Delta RGB 32GB DDR5 6000MHz CL30. They often use SK Hynix A-die chips which are basically the gold standard for DDR5 right now because they handle heat well and have great overclocking headroom if you want to tighten those timings manually later on. Basically, for a high-end card like the 9070, sticking to 6000MT/s CL30 is the play. It minimizes the memory latency bottleneck that can crop up at higher frame rates. If youre doing heavy productivity like 4K video editing tho, you might actually benefit from a 64GB kit instead of 32GB.

Re: "Yo, if youre building around an RX 9070,..." - solid point on those Hynix chips. Basically the thread is leaning toward 32GB of DDR5 at 6000MHz, which is definitely the sweet spot for a build like this. Make sure to be careful with the physical height of your RAM modules. Some of these gaming sticks are massive. If you use a big air cooler, you might want to consider low-profile options so you dont run into clearance issues. Checking your motherboard QVL list is also a must because some boards are still finicky with specific kits. A couple other options to look at:

• Crucial Pro Overclocking 32GB DDR5 6000MHz CL36
• Great if you need something that fits under a large CPU cooler.
• Kingston FURY Renegade 32GB DDR5 6000MT/s CL32
• Very reliable choice that often goes on sale. Whatever you get, remember to toggle the EXPO profile in your BIOS. Seen way too many people leave it on auto and wonder why their performance is tanking. Dont be that person... it only takes a second and actually lets the hardware do what it was built for.

DDR5 is recommended.

For optimal performance with your RX 9070, I recommend DDR5 RAM, as it offers higher bandwidth and future-proofing over DDR4. A 32GB kit (2x16GB) at 6000MT/s with low CAS latency (CL30) is ideal for gaming and productivity. The G.Skill Trident Z5 Neo RGB is a solid choice, offering excellent performance and compatibility.

16GB is still playable but honestly feels tight in 2025. Go 32GB if your budget allows - DDR5 prices have come down a lot. The RX 9070 can push high resolutions where you'll actually use that extra RAM for texture streaming.