AMD Ryzen 9 7900: What Reddit Says About the Quiet 12-Core

And slightly lower clocks. So, even in e.g. single-threaded workloads that don't run into a power limit, you're still getting a bit worse performance. Meaning, if prices were equal, I'd always choose the X SKU over the non-X and just tweak power settings and co. to reasonable efficiency.

For me, introducing the 170W TDP tier was the worst decision AMD did for their CPUs in years and it shows again with this model. There were no tangible performance benefits doing this with Ryzen 5000 and there are even less on Ryzen 7000, which is on a much more efficient node and didn't bring any 16+ core models.

So the non-X SKUs are basically the same as the X SKUs but with eco mode enabled by default?

People really underestimate how expensive power is. 'Just slap a bigger cooler' isnt enough. More power means more pins needed, which means bigger socket, which means more traces required, but less space for traces, which means more pcb layers are needed.

It's insane to me that none of these respectable tech reviewers do any kind of analysis on idle or video playback power consumption. You know, things that a regular computer might do for 60% of the time it's on, even for hardcore gamers.

This review made me realize how bad the 1% and .1% lows are for Zen 4, especially 2 CCD chips. They all end up worse than the 13600k, which isnt even Intels best for gaming.

Wow, it's cheaper than the 7800x3D. I didn't realize gamers skew the market this hard.

A 65w 12 core chip that performs this well is insane. Why on earth is the default 170w when it's hardly even performing much better? At 65w it's doing nearly the same performance while cutting the temps basically in half from 95 to the 50's.

Non x 7900. Even with PBO, it runs as fast as the x but at lower power. Far easier to keep cool.

Nothing wrong with that cpu, I run 1440p 144hz games and never had a bottleneck, and its 12 core count is useful for me when compiling big projects or writing multithreaded code, which is certainly a lot faster than 8 core x3d variants. On top of this, it is a very efficient cpu that is easy to cool, but if you need more power you can always enable pbo and get stock 7900x performance.

The 7900 is much better for threaded loads. Also it is easier to cool because the heat is dissipated over 2 CCDs.

Looks good. Even the 7700-7700x shreds a lot of things.

The 9700x is a LOT more efficient due to containing a single, zen5 Octacore Chip, instead of two zen4 Hexacore Units, which drives down Latencies and Power consumption, while improving Memory speeds (up to 6400MT/s). So with tasks requiring both a good single core performance and multithreaded performance, like Blender, it seems the sweet spot.

Great for a highly efficient server/workstation CPU that runs 24/7.

I think that as long as you don't mind a smallish hit to gaming performance, have a real use for the extra cores, don't wanna wait for the 7800x3d to restock and pay $200-300 extra bucks for it... its the move.

I own both (7900X and 7700X). There's no difference in gaming or every day use (youtube, netflix, MS Office, Zoom, etc.).

If it's just for gaming, the 7900 makes no sense in general. Either 7600, 7700 or 7800X3D or their 9000 series counterparts.

Improved performance in what? Gaming no. Video editing yes.

I can't find any benchmarks that specifically talk about Unreal Engine, but Puget's Blender benchmarks showed pretty clearly a pretty big increase in performance between the 7900X over the 7700X. Given that the 9700X is pretty similar in performance to the 7700X, I would suspect that the blender performance of the 9700X will be significantly under the 7900X. As far as power efficiency, increasing this on the 7900X is a no-brainer.

Sorry to break this for you, but for gaming Ryzen 7600X / 7700X would be even better pick than Ryzen 7900 / 9900.

I have two CPUs one with 9700x and one with 7900, with same MSI gaming plus motherboard and 64GB RAM 6000Mhz. I do programming using multiple instance of Visual Studio and SQL server. Ryzen 9 7900 performs far better than 9700x.

The 7900 is in the realm of 'perfectly fine' CPUs along with the other low-wattage CPUs, and performs in the same band as other Ryzen 7000 non-X3D chips. I'd have no trouble using one with a 4090. The 7900 is effectively just a pair of 7600s stapled together with a high speed interconnect, and the 7600 is a good pairing with any GPU already.

Overall the r9-7900 is better than a r7-5800x3d for gaming. I wouldn't call it ideal, but paired with a 4k monitor it should be fine.

I got the ryzen 9 7900, I could not be happier.

For gaming, there might be better options. But it's truly a beast for production work.

It is just a bad cpu. Worse gaming and multicore than a 14700k and worse gaming performance than a 7800x3d. It is pretty much a ryzen 5 7600 in terms of gaming. If you can get on sale then it might be an okay choice but otherwise I would avoid it.

If you're willing to take the performance hit in gaming, take the performance bump in multi-threaded apps, and wait a bit, the 7900X3D has hit this price point before.

The 7900X with Eco mode turned on is a 7900. The 7900 manually overclocked is a 7900X. I just hope you aren't buying this primarily as a gaming CPU. A TON of people buy the 7900/7900X for gaming thinking it's a better gaming CPU than something in the Ryzen 7 series, and in-fact, it's rarely better.

Especially since it comes with a cooler (not great, but does the job), integrated graphics, and you can basically just enable PBO to get the same performance as the 7900x. I think the sweet spot is around 100W (according to GN's testing), but I bet you could reach the same performance level at only 80 watts with some undervolting and fine tuning. That thing looks like it would crush anything that's video encoding or code compile with an absolutely godly power efficiency.

7700x is better (and cheaper) because it's one 8 core CCD than twin six cores. Most games don't even use 6 cores half of the time, much less all 12.

AMD has stopped producing the 7XXX series, the 9XXX series are meh, and Intel's Arrow Lake is just a power reduction with mainly matching or regressing from Rocket Lake gaming performance — this creates the perfect storm to boost the 7800X3D's prices.

7900 is more of a productivity chip for intense stuff not web browsing. The 7600 is a lot cheaper for similar gaming performance.

Nothing special. $280 was the deal. Decent cpu, if you purchase this consider buying process lasso.

PBO gets it to 7900x performance (or at least so close you wouldn't care) and by the time you add a simple -30 all core undervolt you're looking at about 16/17% above stock in r23. Been solid in gaming and very impressive for my production workloads. Ultimately I think they're so similar (just set differently out of the box) that you can't go wrong either way now the price is so close.

For gaming, dual-CCD chips (12/16 cores) are cost-ineffective. 7900X is no better in games than 7700X, and loses to 7800X3D and 7600X3D in every game that I've seen tested. Even 7600X, which is literally 7900X chopped in half, is only marginally slower.

9700x with NO CHANGE out the box hits 5.5-5.6 GHz at 65w. So for gaming, & streaming 9700x wins. For editing, rendering, etc 7900 wins by 20%. Both use 65w. It's a tough choice.

There is almost no performance difference between Ryzen 7000 and Ryzen 9000 non x3d cpus. The 7900 runs cool. The included cooler is adequate and looks nice. It's a fine chip. Enjoy it and don't worry.

7900x is a good chip but only if you feel like you'd benefit from the extra cores/threads.

I got this CPU because it sounded reasonable to me and im happy with the performance i get. Im using a DARK ROCK 4 and on idle the cpu runs at about 50°C under full load its somewhere between 60-70°C.

I upgraded my son's AM4 to AM5, 5900 non X to 7900 non X. Zero complaints from either CPU.

Yes you could underclock the 7900X; Maybe I'm blessed with cheap power where I live but I could not give two shits about an additional 20W power draw or whatever. If they are the same price just get the 7900X.