When you’re sitting at the top of the stack and hold the crown for the gaming king for a desktop processor, how do you carry on innovating? If the competition has gone quiet, and are struggling to keep up where the majority of the userbase are looking, you have a couple of options and this is exactly what AMD were faced with for the Ryzen 7 9800X3D. A 3D V-Cache-based CPU that took gaming to new heights, and is sorely regarded as the best of the best in the desktop gaming landscape, at least that was until today, where it’s set to be beaten by its successor, the Ryzen 7 9850X3D. Now, don’t let the name fool you. While this is a successor, on paper, there’s not a huge amount going on, but this isn’t an unexpected move for the red team, as we’ve seen this playbook time and time before with the XT line of CPUs in their previous arsenal of products.
AMD Ryzen 7 9850X3D
It’s a tale as old as time: take a winning formula, bin the silicon a little more aggressively to squeeze out a few hundred extra megahertz, maybe tweak the voltage curve, and slap a new badge on the box. We saw it with the 3000 XT series, we saw it with the 5000 XT refresh, and now, we’re seeing it here.
The 9850X3D promises boost clocks of 5.6GHz which is a healthy 400MHz bump over the let’s now call it, “vanilla” 9800X3D, and while that sounds great on a spec sheet, the real question we have to ask comes down to if that actually translate to more frames in Cyberpunk, or is it just a way to keep the price tag high while the competition flounders? With the 9800X3D already saturating the capabilities of even the RTX 5090 in many titles, are we hitting the point of diminishing returns, or is this the new gold standard for the enthusiast who just has to have the best?
Zen 5
Architecture-wise, if you’ve been paying attention to the Zen 5 lifecycle, a lot of this is going to sound very familiar. The Ryzen 7 9850X3D is built on the same core foundations as its predecessor, utilising TSMC’s 4nm process node. You’re still looking at 8 cores and 16 threads, which we’ve said time and time again is the sweet spot for modern gaming.
However, the magic, as always with the X3D parts, lies in that vertical stacking. We’re looking at the second generation of AMD’s “under-die” 3D V-Cache implementation. Unlike the 5000 and 7000 series, where the cache sat on top of the cores, acting like a thermal blanket and limiting clock speeds, AMD flipped the script with the 9000 series. By putting the cache underneath the CCD, the cores have direct contact with the IHS and this is exactly why we can now see those boost frequencies hitting the likes of 5.6GHz, a number that would have been a pipe dream for a V-Cache chip just a few years ago.
You’re still getting the standard 32MB of L3 cache native to the Zen 5 CCD, plus that massive 64MB slice of 3D V-Cache, giving us a grand total of 96MB of L3 cache. That massive pool of memory is what keeps the frametimes smooth and the 1% lows high, but with the 9850X3D, AMD claims they’ve refined things to allow this chip to sustain those higher clocks for longer periods without hitting the thermal wall quite as fast.
Hitting 5.6GHz
This is where binning is the key important word of the day. The “9850” designation implies this is the cream of the crop silicon. In semiconductor manufacturing, no two chips are identical due to microscopic variances in the wafer. The 9850X3D dies are likely leakage-screened to ensure they can hit that 5.6GHz target at lower voltage points than a standard 9800X3D would require. This V/F (Voltage/Frequency) optimisation is crucial because, despite the better thermal layout, 3D V-Cache is still extremely voltage sensitive and it really doesn’t like high voltages. By selecting the highest quality silicon that runs stable at lower volts, AMD can push the frequency slider up without frying the sensitive cache underneath.
Another scenario is that the 9850X3D could be using other model CPUs that didn’t quite make the cut and repurposing those parts into what we have here today. Think of a 9900X3D that didn’t quite hit the performance markers needed to see it see the light of day in the retail world. Instead of simply throwing it away, all AMD has to do is to shave off 4 cores and 8 threads, bump the frequency up slightly by 100MHz, and we suddenly have a new CPU on our hands.
9800X3D Vs 9850X3D
So, going back to the original point. You’ve got the thermal solution of the inverted stack, the hungry front-end of Zen 5, and the voltage efficiency of top-tier binning all working in tandem. On paper, it’s a monster, but how much more can it deliver over its older brother, and more importantly, what does that mean for the end consumer? A few increases in performance here and there, and some extra frames per second in-game, but if you’re already pushing the limits with the 9800X3D, is it really worth it, and if as AMD claims, both the 9800X3D and 9850X3D will live side-by-side, then you have to ask what the point of releasing it really is.
Performance Expectations
Now, without sounding like I’m concluding rather than introducing, it seems that the release has nothing to do directly with the 9800X3D. AMD even claimed themselves that in gaming there’s a small 7% uplift on average, and some small gains here and there in productivity based tasks, depending on the workload, but where it matters is further extending that lead over Intel’s flagship Core Ultra 9 285K, of which again, if the claims are anything to go by, we’ll be seeing up to 27% faster performance when directly pitted against each other, though of course that’s game dependent.
So, the big questions come down to if that 27% figure holds up in the real world outside of carefully curated marketing slides, and perhaps the biggest question of all: is it enough to justify the price premium over the already legendary 9800X3D for anyone other than the most die-hard enthusiasts? We’ve got a full suite of benchmarks to get through, thermal analysis to check if that inverted stack is doing its job, and the answers to whether this is a worthy upgrade or just a humble flex.
Affordability
Pricing-wise, the 9850X3D is launching at $499, which is $20 more than what the 9800X3D launched for back in November of 2024. With inflation affecting everything around the world, I’d honestly say that’s about right, but with how the 9800X3D can now be picked up for $469, it creates a bigger disparity, putting the 9850X3D 6% more expensive, compared to 4% if we’re comparing launch pricing. So with a 6% price margin between them, the 9850X3D’s yard stick sits firmly at that, and personally we’d want to be seeing 10% uplifts or higher to make it worthwhile unless you’re just chasing frames and want the very best, then you could argue a 6% increase is perfectly fine, but after being in this industry for a very long time, myself and the team are not content on being perfectly fine, and I’d argue that the general enthusiast consumer base isn’t either.
