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AMD Zen 5 rumours

Relative to the cost of a high end Threadripper it might not add that much cost so could be a good differentiator as well as potentially being useful for some workloads, what they would be apart from gaming I'm not actually sure. Almost all productivity stuff I've seen (I don't pay much attention to those parts of reviews though to be fair) a higher clockspeed or more cores usually makes more difference.
 
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tommoT.Striker said:
Looks like Threadripper will get V Cache as well.

https://videocardz.com/newz/amd-reportedly-preparing-threadripper-and-next-gen-apus-with-3d-v-cache

I wonder what workstation apps will be accelerated with the extra cache, enough for AMD to offer on Threadripper? Might be Threadripper Pro WRX only, but looks like with the cache under the die, they can provide a more compelling use case than the original V Cache implementation.
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V$ was originally done for Epyc CPUs in fact, that's how we got it for desktop, it trickled down. Their main use case was for databases, it had huge gains there (and that's pretty much it iirc). There was a whole interview about it (years after the fact) with an ex-AMD guy I think but I can't remember exactly. Or maybe it was a Forrest Norrod interview. I'm sure someone can track the exact source down.
 
Some good vids there for people building new systems.
If you just want your new shiny to work properly, stick with 6000 CL30 DDR5 "if" you don't want to have to learn to tune the system

 
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tamzzy said:
i think at stock, the 9800x3d will only be 5-15% faster than the 7800x3d

my reasoning for this speculation is:
going from a 5800x to a 7700x is a 15% performance bump
going from a 5800x3d to a 7800x3d is a 20% performance bump (+5% on top of vanilla)

so, if the performance uplift of a 7700x to a 9700x is only 5%, then i would assume a 10% increase (5% + 5% for the x3d portion)
the only way i can see this improving is if zen 5 is much more efficient than zen 4 and allows the 9800x3d to keep the boost clocks higher and for longer, given that the x3d sits in between the cpu and the heat spreader

putting this out here so i can either be proven right or be laughed at when next month comes round :cry:
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i would like to say...i called it

the £230 i paid for my 7800x3d still is a bargain :cry:
 
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tamzzy said:
i would like to say...i called it

the £230 i paid for my 7800x3d still is a bargain :cry:
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Not to mention that 5% increase in performance for the x3D is really the bump in both power use and Mhz increase tbh. If you look at setting the 9800x3D to the same power and Mhz max speed then you loose that 5% increase as such so really the 9000 series isn't any better than the 7000 series beyond that 5%% increase generally.
 
Rob_B said:
Relative to the cost of a high end Threadripper it might not add that much cost so could be a good differentiator as well as potentially being useful for some workloads, what they would be apart from gaming I'm not actually sure. Almost all productivity stuff I've seen (I don't pay much attention to those parts of reviews though to be fair) a higher clockspeed or more cores usually makes more difference.
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Zen 5 thread ripper will be super interesting to see for the impact of 4/8 channel memory.

Zen 5 was heavily widened vs. Zen 4, but it's clear that feeding it is a big bottleneck. Hence why vcache has positively effected IPC in productivity workloads for Zen 5 where it had no effect on IPC on Zen 4 (accounting clock speed regression).

On a hugely speculative tangent, it does look like Zen 5 could have been intended to come with a new IO die but it didn't work out?
 
Wow, the 7800X3D prices really shot up since July. I got one for £308 in a sale before Zen5 was released and £330 seemed about the usual going rate.

The cheapest I have seen one is £390. Have the prices increased because the 9800X3D is deemed not much faster?
 
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ICDP said:
Wow, the 7800X3D prices really shot up since July. I got one for £308 in a sale before Zen5 was released and £330 seemed about the usual going rate.

The cheapest I have seen one is £390. Have the prices increased because the 9800X3D is deemed not much faster?
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I've said this is another thread but I bet it was to make the 9800X3D price "look" better as its currently only £30 more for the 9800X3D.

Back in June the 7800X3D was £315, it went up from £400 to £420 yesterday.

Will most likely get some black Friday discount and in turn try and make it look good compared to the price is currently is
 
ED209 said:
I've said this is another thread but I bet it was to make the 9800X3D price "look" better as its currently only £30 more for the 9800X3D.

Back in June the 7800X3D was £315, it went up from £400 to £420 yesterday.

Will most likely get some black Friday discount and in turn try and make it look good compared to the price is currently is
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The problem with that hypothesis, is that the 9800X3D is launching at the 7800X3D launch MSRP. So the 9800X3D will still sell well as it is now the best gaming CPU.

I believe the price of the 7000 X3D CPU prices went up because the earlier Zen 5 no 3D CPUs were not particularly well received and reviewed. So retailers bumped the prices up due to demand.

AMD did not raise 7000 X3D prices, retailers did.
 
Just checked my 7900X3D price when I bought it back in Dec 2023. It was £375. It actually got much cheaper than that. This was a much maligned CPU but that negativity was purely on price, it was launched at £620 here in the UK. That was clearly designed to upsell to the 7950X3D.

At £375 it has been a great CPU for gaming and productivity. It’s now £85 more expensive at £460. These 7000 X3D prices are pure price gouging by retailers IMHO.
 
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missed out yesterday, so on pre for December. gives me time to sort rest out. (mobo & Ram) coming from 5800xd and 5900x. should see better results. Cmon Santa
 
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