What is the best RAM for an RTX 5090 build?

Honestly, I've been super happy with my G.Skill Trident Z5 Neo RGB 64GB (2x32GB) DDR5-6000 CL30-40-40-96 and I'd suggest sticking to something stable like that. Here's why I'm cautious about pushing higher:

1. Stability is king. Basically, 8000MHz kits often require manual tuning that can lead to crashes, and for a beastly RTX 5090 build, you want it to actually work without headaches.
2. Diminishing returns. At 4K, the GPU does the heavy lifting, so you're mostly just paying for numbers that look good in benchmarks but dont help your gaming experience that much.

I mean, if you really want to push it, maybe try Corsair Vengeance RGB 64GB (2x32GB) DDR5-6600 CL32-39-39-76, but going beyond that is lowkey risky. Plus, the 6000-6400MHz range is the sweet spot for reliability right now. Good luck with the dream build! 👍

Quick question - what CPU and motherboard are you planning to drop into this beast?? Honestly, that makes a HUGE difference for DDR5 stability since the memory controller on the chip is basically the gatekeeper for those crazy high speeds. I've been building high-end rigs for years and pushing past 7200MHz is actually super risky unless you've got a top-tier 2-dimm board like an Apex or Tachyon.

I love the ambition though!! For a 5090 build, you definitely want something amazing like TeamGroup T-Force Delta RGB DDR5 32GB (2x16GB) 7200MHz CL34 or maybe the Kingston Fury Renegade DDR5 64GB (2x32GB) 6400MHz CL32 if you want that rock-solid reliability for your video rendering. I once tried pushing 8000MHz on a 4-slot board and it was a total nightmare... literally crashed every time I tried to export a 4K timeline lol.

So yeah, tell me your CPU choice and I can give you a more technical breakdown on whether those bleeding-edge speeds are actually worth the headache! 👍

I'd actually suggest a different approach... honestly, i've had issues with pushing those crazy speeds before and it was NOT as good as expected. unfortunately, stability is where it’s at for rendering. just get any high-capacity kit from ADATA or maybe PNY. after years of builds, i've learned that crashes literally ruin the experience, right? definitely focus on safety over those benchmark numbers... peace.

sooo I totally get the hype for the 5090 but honestly? I wouldn't go overboard on the most expensive RAM kits just because the GPU is top-tier. In my experience, once you get past a certain point, you're basically just paying for bragging rights rather than actual frames per second, especially at 4K where you're gonna be GPU bound anyway.

I recommend looking at something like the Teamgroup T-Force Vulcan DDR5 64GB (2x32GB) 6000MHz CL34 or even the Patriot Viper Venom DDR5 64GB (2x32GB) 6400MHz CL32. These are usually way cheaper than those 8000MHz kits and ur much less likely to deal with system crashes or endless BIOS tweaking. Like, is 2-3 extra FPS worth an extra $150 and the headache of a blue screen during a video render?? Probably not!

Also, if ur doing video work, 64GB is lowkey more important than hitting 8000MHz. Higher speeds can actually be harder to keep stable when you're running high-capacity sticks. I mean, if you really wanna push it, maybe try the Crucial Pro Overclocking 32GB (2x16GB) DDR5 6000MHz CL36 if you're on a tighter budget, but sticking to 6000-6400MHz is the real sweet spot for value. It just works, you know? Anyway, dont let the 5090 hype trick you into spending $400 on memory when that money could go toward more NVMe storage or a better cooler. Just my two cents... gl with the build!!

Any updates on this?

Honestly if youre building for the long haul just get something stable that works without fiddling too much because after a year you wont even notice the speed diff anyway. It reminds me of when I spent way too much on a fancy standing desk last summer. I thought it would change my life but I mostly just use it to stack old magazines and empty coffee mugs now. My cat actually reclaimed the corner of it as his new sleeping spot so I cant even raise it anymore without waking him up. He is this grumpy orange tabby who thinks he owns the place and he gets so annoyed if I move his favorite blanket even an inch... anyway lol sorry kinda went off topic there.

^ This. Also, I am totally with you on the struggle and it is honestly exhausting! I love the energy you are putting into this build though, it is gonna be amazing! Even after building high-end rigs for fifteen years, I still have no idea what to do here. I've been trying to finalize my own 5090 part list for weeks now and the RAM is the one thing I keep deleting and re-adding to my cart. It's so frustrating because I want that peak performance for my 4K projects but I'm terrified of high-speed kits being a nightmare to stabilize. Basically my whole week has been:

• Comparing latencies until my eyes bleed
• Reading every single conflicting opinion on the web
• Swapping between high clock speeds and tighter timings every hour I'm right there with you and it's the worst feeling! I've been stuck in this loop for a month and honestly still dont have a clue. If anyone actually cracks the code for the perfect pairing please let us both know!

Saved for later, ty!