AMD Ryzen 9 7900 Beats the 7900X with PBO Enabled: Same Performance at $120 Less?

The other day AMD released its Ryzen 7000 non-X processors at lower price tags (and TDPs) compared to the earlier launched X series CPUs. Despite what marketing may have you believe, there’s almost no difference between the X and non-X variants. Out of the box, the latter feature slightly lower boost clocks and a TDP of 65W, but that can be changed in a single click.

As shown in the above shot, MSI and other motherboard vendors allow you to change the TDP and power limit on the non-X chips as well. Upon setting the TDP to 170W (same as the X series SKUs) and enabling Precision Boost Overdrive, we see the Ryzen 9 7900 gain a performance boost of 15%. The resulting Cinebench numbers put it squarely on par with the 7900X.

We see similar behavior from the Ryzen 7 7700. Although it ends up slightly slower than the 7700X in the multi-threaded segment, the difference is negligible and will vary from sample to sample. It’ll be interesting to see if these chips draw more power than their X variants in a given workload, as they’re lower-binned.

ModelCores/ThreadsBoost/Base FrequencyTotal CacheTDPCoolerSEP (USD)
AMD Ryzen 9 790012C/24TUp to 5.4 GHz / 3.7 GHz76MB65WWraith Prism$429
AMD Ryzen 7 77008C/16TUp to 5.3 GHz / 3.8 GHz40MB65WWraith Prism$329
AMD Ryzen 5 76006C/12TUp to 5.1 GHz / 3.8 GHz38MB65WWraith Stealth$229


Config TDP – Quick way to overclock 65W Ryzen 7900/7700 with PBO?
7700/7900 Cinebench R23 MT performance with Config TDP 95W/105W/125W/170W:
7900: 13% faster with 170W Config TDP. 9% faster with 95W.
7700: 3% faster with 170W.
(MB: MSI B650 Carbon WiFi, BIOS 110, AGESA

Originally tweeted by chi11eddog (@g01d3nm4ng0) on January 6, 2023.

Areej Syed

Processors, PC gaming, and the past. I have been writing about computer hardware for over seven years with more than 5000 published articles. Started off during engineering college and haven't stopped since. Mass Effect, Dragon Age, Divinity, Torment, Baldur's Gate and so much more... Contact: areejs12@hardwaretimes.com.
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