RTX 5080 Upgrade on Old Hardware: Rough but Convinced Me of Multi-Frame Generation's Value

Jun 30,25

I always get a thrill when a new graphics card drops, and even more so with the reveal of the RTX 5080 and its groundbreaking DLSS 4 technology. Leveraging AI to boost visuals and frame rates beyond previous limits is nothing short of revolutionary. But as soon as I looked at my aging gaming rig, excitement gave way to hesitation.

My trusty RTX 3080 held up well for years, delivering a smooth 60 fps at 4K with max settings in my favorite titles. Unfortunately, performance steadily declined until I was forced to lower settings just to keep gameplay tolerable. It was frustrating—I play games to experience every visual detail. The artists pour their hearts into these worlds, and I want to see it all. Could my PC still do justice to that art?

As it turns out, the Nvidia GeForce RTX 5080 does work with my older build. Plus, I’ve got a 1000-watt PSU ready to handle the increased power draw from the new GPU. That said, there were some bumps along the road.

Despite the upgrade, my system wasn’t exactly optimized, and raw performance felt underwhelming. Still, despite my initial skepticism—especially regarding DLSS 4—its multi-frame generation tech impressed me enough to reconsider everything I thought I knew about upscaling.

Installing the RTX 5080 – A Four-Hour Saga

Calling my build “grandpa-level” might be an exaggeration. After all, it runs an AMD Ryzen 7 5800X with 32GB of RAM on a Gigabyte X570 Aorus Master motherboard (a detail that matters more than you’d think). Swapping out a GPU should be straightforward, right? Wrong.

Assuming the same PCIe 8-pin cables that powered my RTX 3080 would work, I connected two of them to two of the three required adapters on the RTX 5080. I didn’t expect it to work—but hey, laziness is real. The card wouldn’t power on. No LED lights, no signal. Just silence.

So I did what any rational person would do: ordered PCIe Gen 5 12-pin power cables via DoorDash from a Best Buy across state lines—$44 later, they arrived. Plugged everything in, turned the PC on, and… partial success. The GPU flickered but wouldn’t boot. Red VGA light on the motherboard confirmed something was wrong.

After an hour of head-scratching, I realized the issue: the X570’s massive chipset fan blocked full insertion into the PCIe x16 slot. No matter how hard I tried, the RTX 5080 simply wouldn’t seat properly. So I caved and inserted it into the x8 slot instead. Yep. One of the best GPUs from Nvidia, stuck in x8 mode. Not ideal, but it was alive.

RTX 5080 Performance on My Aging Rig

Running 30 benchmarks across five major titles, the raw performance was... average at best. However, once DLSS 4 kicked in, those eye-popping numbers Nvidia promised started showing up—and they made all the difference.

For the uninitiated, DLSS 4 is an AI-powered upscaling technology that boosts performance while preserving image quality. What makes the RTX 50-series stand out is Multi Frame Generation, which can create up to three frames per actual rendered frame. This feature is game-specific, though some titles support frame generation without full multi-frame capabilities. Fortunately, you can override settings via the Nvidia app.

Equipped with the RTX 5080, I dove into Monster Hunter Wilds, a notoriously poorly optimized title. At 4K Ultra with RT High, I only managed 51 fps without DLSS. Enabling DLAA and standard frame generation (2x) boosted that to 74 fps. Switching to Ultra Performance pushed it to 124 fps. While Multi-Frame Generation (4x) didn’t work natively at the time, users have since found a workaround.

Next up was Avowed. Previously, I struggled to hit 60 fps even with settings dialed back. With DLSS off, Ultra 4K and RT enabled yielded just 35 fps. Flipping on DLAA and MFG shot it up to 113 fps—a 223% increase. And Ultra Performance nearly doubled that again.

Then came Oblivion: Remastered, where even the mighty RTX 5080 faltered. Without DLSS, performance hovered around 30 fps, dipping as low as 20 in dense areas. Enable DLAA and MFG, and suddenly I had 95 fps. Ultra Performance? 172 fps. That’s over five times the original frame rate.

In Marvel Rivals, a competitive title where timing matters, I tested both frame rate and latency. At Ultra 4K without DLSS, I saw 65 fps with 45ms latency. DLAA + MFG brought 182 fps at 50ms, while switching to Performance mode dropped latency to 28ms at 189 fps—matching non-generation performance. DLSS definitely helped, even if it didn't land me MVP status.

Lastly, Black Myth: Wukong delivered solid results through its benchmark tool. At Cinematic 4K with DLSS set to 40% and RT Very High, I hit 42 fps. Frame generation bumped that to 69 fps. If Multi-Frame Generation doubles that gain, I could expect around 123 fps—plenty for an enjoyable experience.

Needless to say, relying solely on raw GPU power left me disappointed. Part of this stems from my outdated components, and partly because this generation's performance leap wasn't as dramatic as expected. But DLSS 4 changed the equation entirely.

You Don’t Need a Brand New PC to Enjoy a New GPU

Of course, DLSS 4 and Multi-Frame Generation come with trade-offs. The AI generates visuals that weren’t originally there, and while impressive, it’s not perfect. Environmental textures sometimes appeared blurry or distorted during UI interactions. DLSS isn’t magic—it trades raw fidelity for smoother performance. It helps struggling ports, but I hope developers don’t lean too heavily on this tech going forward.

Still, my takeaway is clear: even in less-than-ideal conditions, the RTX 5080 delivers. I considered removing my motherboard fan to fit the card in x16 mode, but after seeing DLSS 4 in action, it seemed unnecessary.

So no, you don’t need a full PC overhaul to enjoy a next-gen GPU. You might need a beefier PSU (the RTX 5080 recommends at least 850W) and compatible cables (like I did), but that’s about it. GPUs are expensive and tough to find—no need to overspend on other parts unless absolutely necessary.

Will my current setup last forever? Probably not. But thanks to DLSS 4 and Multi-Frame Generation, I’ve bought myself enough time to casually wave hello to Wesker before needing another full upgrade.

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