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Best high-performance RAM to pair with an RTX 5090?

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Hey everyone! I'm finally pulling the trigger on an ultimate build centered around the RTX 5090. Since I'm spending so much on the GPU, I really want to make sure the rest of my components keep up, especially the memory.

I've been looking at some high-speed DDR5 kits, but I'm torn between raw frequency and tighter timings. Here is what I'm currently looking at:

  • G.Skill Trident Z5 at 8000MHz
  • Corsair Dominator Titanium at 7200MHz CL34
  • 64GB total capacity versus 32GB

I mainly do heavy 4K gaming and high-end rendering. Do you think pushing for 8000MHz is worth the potential stability trade-off for this setup? What RAM would you recommend to get the absolute most out of the 5090?


7 Answers
12

I totally agree that chasing 8000MHz is just asking for a headache, especially for rendering. Honestly, the market is currently carried by Hynix A-die kits. If you want the best balance of speed and cooling for that 5090, Corsair Dominator Titanium 64GB DDR5 7200MT/s CL34 is hard to beat. Their DHX tech actually makes a difference during long render sessions where heat soak can cause errors. 64GB is definitely the sweet spot for high-end builds now.


11

Tbh, 8000MHz is a stability gamble. Grab Teamgroup T-Force Delta RGB 64GB DDR5 7200MHz CL34 instead; the extra capacity is way more important for high-end rendering than those marginal speed gains.


3

Tbh, 8000MHz is overkill and prone to crashes. Get G.Skill Flare X5 32GB DDR5-6000 CL30 instead. It is way cheaper and you wont actually notice the speed difference in 4K.


3

Man, seeing people talk about pushing 8000MHz makes my eye twitch a little bit lol. I saw this post earlier while I was grabbing lunch but had to take a breather before typing because it just brings back so much anxiety. This whole situation just reminds me of back when I was building my first real high-end workstation for my design business. I was totally obsessed with getting the highest numbers possible because I thought it would make my renders fly. I remember stayin up until 3am tweaking voltages and timings on this old kit I had. It felt stable for like two days and I was so proud of myself... until it wasnt. I was right in the middle of a massive 48-hour render for a client, everything seemed fine, and then I just got a total system lockup. When I finally got it back up, my OS was totally corrupted because of the memory instability. I ended up losing almost three weeks of work because I didnt have a proper off-site backup at the time. It was a complete disaster. My brother-in-law had a similar nightmare too, he actually ended up frying his memory controller because he was pushing way too much voltage trying to hit some arbitrary speed he saw on a forum. It turned into this whole ordeal where he had to RMA the board and the chip, and he was out of a PC for like a month. Its just wild how much of a headache it can become when things go sideways. Anyway, really brings back some stressful memories thinking about those high frequencies...


3

Nice, didn't know that


3

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1

Just saw this thread and honestly... it brings back some bad memories. I spent weeks trying to stabilize a super high-speed kit last year and unfortunately it was just a massive waste of time. I had issues with random crashes right in the middle of long renders which is basically the worst nightmare when you're on a deadline. The performance wasnt as good as expected either because the latency hits were weird. I ended up swapping to more conservative kits for my long-term work and havent looked back.

  • Kingston FURY Renegade 64GB DDR5 6400MT/s CL32: This has been rock solid. The timings are tight enough to keep the 5090 fed but it doesnt cook itself during 10-hour render sessions.
  • Crucial Pro Overclocking 64GB DDR5 6000MHz: Its not as flashy as the G.Skill stuff but its built like a tank. Very reliable, tho the lack of RGB might be a bummer for a high-end build. Really hope you find something that stays stable for you. Stick to the 6000-6400 range if you want to actually use your PC instead of staring at blue screens...


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