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AMD Product Pages Say Upcoming 7950X3D and 7800X3D "Unlocked for Overclocking"

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The product pages of the upcoming AMD Ryzen 9 7950X3D and Ryzen 7 7800X3D "Zen 4" processors went online, which say that the two chips are unlocked for overclocking. This normally implies that the processor has an unlocked base-clock multiplier, which makes it easy to overclock. The previous-generation Ryzen 7 5800X3D processors came with locked base-clock multipliers, making them complicated to overclock. Both the 16-core/32-thread 7950X3D and the 8-core/16-thread 7800X3D come with a TDP rating of 120 W, which for the 7950X3D is significantly lower than the 170 W that the 7950X is rated at. It's also worth noting that the T-junction max (TJmax) value is lower, at just 89°C, compared to 95°C of the 7950X and 7700X.

Slated for a February 2023 market release, the two chips introduce stacked 3D vertical cache technology (3DV cache). The 7800X3D comes with 64 MB of 3DV cache stacked on top of the 32 MB of on-die L3 cache, taking its L3 cache size to 96 MB, and total cache (L2+L3) to 104 MB. On the other hand, the 7950X3D and the 12-core/24-thread 7900X3D only come with the 3DV cache memory on one of the two "Zen 4" CCDs. The first CCD has 96 MB of L3 cache (including the 3DV cache), while the second CCD is a standard "Zen 4" CCD with just 32 MB of on-die L3 cache. For these chips, the L3 cache adds up to 128 MB, and total cache to 140 MB for the 7900X3D, and 144 MB for the 7950X3D.



Update Jan 24th: AMD updated their product pages to remove this field altogether. It looks like we'll have to wait a bit for AMD to finalize its specs.

View at TechPowerUp Main Site | Source
 
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*AIO or watercooling required....:laugh:


Considering the performance and cost if you aren't water-cooling these chips you really have no business purchasing them. It would be like buying a Ferrari and then putting in the cheapest gas and tires and wondering why it just doesn't work as well as others. I suppose some people are that dumb, but I would hope no one here is.
 
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Considering the performance and cost if you aren't water-cooling these chips you really have no business purchasing them. It would be like buying a Ferrari and then putting in the cheapest gas and tires and wondering why it just doesn't work as well as others. I suppose some people are that dumb, but I would hope no one here is.

Updated my post...:D

*Watercooling or LN2 required....


I don't think there's much to overclock, unless you just run few benchmarks with LN2....
 
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That's great news if it would be the case. I'm not sure how clocks're going to work for 2CCD designs but 7800x3D is now even more tempting. If it can boost to 7700x's speeds then you can have vCache advantage without a compromise.
 
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OC for the non 3d chiplet only?
 
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Updated my post...:D

*Watercooling or LN2 required....


I don't think there's much to overclock, unless you just run few benchmarks with LN2....
Maybe a chilled water phase change system for some buffer. If someone wanted to donate the $$$ I would sacrifice my time to build a Phase change/freon system for a complete AMD build to overclock......
 
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good , i hope it will mean my next upgrade path, a 5800X3D, will maybe, probably, eventually, why not, drop a bit more (preferably under 300chf )

as for OC ... well, never bothered to OC my R5 3600, last OC CPU was on my previous 6600K and it did not end well, even with a mild OC that ultimately got wrecked by M$ and Intel (no workaround worked sadly)
all OC prior to the 6600k were fun ... Socket 7, Super 7, 939, 940, AM2, AM3, FM2/FM2, S775, S1366 even FS1b (aka AM1, yeah my Athlon 5350 was indeed overclocked )
 
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The Ferrari is very useful cliche, lately. Meanwhile I wait for something useful to ordinary peoples which isn't wish to pay for wet alien technologies just to cool a pieces of silicium.
 
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If this isn't a listing mistake, I'd put money on the overclocking only being applied to the non-vCache CCD

I was sure I saw a tweet from AMD official that the X3D Zen4 chips would still be locked...
 
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OC for the non 3d chiplet only?
It's a possibility, but on the other hand the 5800x3d I have already runs at 4.65GHz with an Arctic Freezer 280 at 82c and it doesn't go any further because my motherboard won't let me, so anything is possible.
 
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If this isn't a listing mistake, I'd put money on the overclocking only being applied to the non-vCache CCD

I was sure I saw a tweet from AMD official that the X3D Zen4 chips would still be locked...


The 7800X3D only has one CCD and if it officially supports overclocking maybe they found a way to make the extra cache go faster, or its luck of the draw, or they are doing a really good job binning these dies to make sure there is at least some room.
 

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Considering the performance and cost if you aren't water-cooling these chips you really have no business purchasing them. It would be like buying a Ferrari and then putting in the cheapest gas and tires and wondering why it just doesn't work as well as others. I suppose some people are that dumb, but I would hope no one here is.

I think a big Noctua D15 or D15S can still exploit a 7800X3D quite nicely
 
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Beautiful. But I'm sure it will require at least 360mm AIO for this because there will be performance throttling at 89 degrees.
But if it is increased to 95-100 degrees from the motherboard, it is different. For 7950X3D it may be at 420mm.
Maybe with a little voltage adjustment the heat will stay under control.
 
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the mixing of a hot 5.7ghz die that likes 95C all the time - and a 5Ghz die that doesn't like anything above 89C ever on the same chip, right next to each other, is an interesting approach for sure. It's like a 90's sitcom recipe.

7800X3D looks amazing tho.
 
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I think a big Noctua D15 or D15S can still exploit a 7800X3D quite nicely
Or you could just cut the power limit. The 7700 non-x is within 1% gaming performance of the X model at 1080p, at it's stock 65w tdp (88w PPT). It's been generally acknowledged that Zen 4 was pushed way past the optimal point in its efficiency curve.
 
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Or you could just cut the power limit. The 7700 non-x is within 1% gaming performance of the X model at 1080p, at it's stock 65w tdp (88w PPT). It's been generally acknowledged that Zen 4 was pushed way past the optimal point in its efficiency curve.
Yes, I am currently running a 7600X on a noctua D15S, PBO is set to 80W limit with a curve optimization and the performance impact is ridiculous indeed
 
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Updated my post...:D

*Watercooling or LN2 required....


I don't think there's much to overclock, unless you just run few benchmarks with LN2....
It could be one chiplet only, without 3d cache.

Edit, that could be the case only for the big chip. I guess we have to wait.
 
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Does Overcklocking at least means, that PBO Curve is unlocked for all Mainboards? My B550 Board does not have PBO Curve for the 5800X3D.
 

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why are people surprised? Can't go past 5.7GHz All-core anyways for us normals. If it was locked, the same overclock of 5.3 GHz all-core would happen. Its still a Zen4 CPU.
 
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The 7800X3D only has one CCD and if it officially supports overclocking maybe they found a way to make the extra cache go faster, or its luck of the draw, or they are doing a really good job binning these dies to make sure there is at least some room.
That's why I am not certain that this isn't just a listing mistake. AMD have made temporary mistakes on their product pages in the past for motherboard chipsets and GPU specs too - so I'm not entirely trusting in them when they first appear.

With the dual-CCD models having on non-vCache CCD, it would make sense that one CCD can OC like any other Zen4 so far, and the vCache CCD is the restricted one.

The 7800X being a single CCD with overclocking is the first time info from AMD has conflicted. I'm trying to find the tweet or r/AMD official post that said Zen4 3DvCache chiplets wouldn't be overclockable - which isn't incompatible with a dual-CCD model being overclockable on the other, regular CCD.
 
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That's why I am not certain that this isn't just a listing mistake. AMD have made temporary mistakes on their product pages in the past for motherboard chipsets and GPU specs too - so I'm not entirely trusting in them when they first appear.

With the dual-CCD models having on non-vCache CCD, it would make sense that one CCD can OC like any other Zen4 so far, and the vCache CCD is the restricted one.

The 7800X being a single CCD with overclocking is the first time info from AMD has conflicted. I'm trying to find the tweet or r/AMD official post that said Zen4 3DvCache chiplets wouldn't be overclockable - which isn't incompatible with a dual-CCD model being overclockable on the other, regular CCD.
The 5800X3D can overclock some now too.
 
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