• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Poll: Ryzen 7950X3D, 7900X3D, 7800X3D

Will you be purchasing the 7800X3D on the 6th?

  • Total voters
    191
  • Poll closed .
Demon said:
From my own experience (may not be as extensive as yours, feel free to correct me!) I've found the larger L3 cache's have more impact on your first use case than your second. that doesn't mean the second isn't always the quickest, but with more scope and range for branch prediction it softens the blow for cache misses?

I've used Intel PCM on Xeon processors to figure out where our bottlenecks are and just noted that we get more of an uplift with larger L3 cache for more algorithmic/logical threads than not.. The data processing threads tend to fit nicely in L2's range anyway (once optimised), but larger or more varied datasets do see an increase. We do encoding of large data streams at times, those algorithms are too heavy to 'fit' fully in L2 and our hit rates decrease so the L3 size often does help then.

As a side note, when we have not seen any performance difference between hardware generations with more L3/better features, it's normally been data synchronisation issues between threads (so stalling the CPU constantly) or worse, heavy context switching on data processing, that gets very low hit ratios on all the cache.
Click to expand...
My experience of compute workloads is limited, so just supposition on my part. In my experience in games, especially Unreal which fundamentally is a disaster in terms of cache efficiency, and multi-threading....we're usually battling quirks in the engine all the time, certainly getting nowhere close to optimal hardware performance. You can get your data all nicely lined up and chew through it cache-efficient fashion, but then in order to realise the results in the UWorld you have to go back to single-threaded, cache-disaster zone.

There's a lot of work been done in UE5 to be fair to address these issues, but it's still pretty painful to work with.
 
delta0 said:
I think considering how well it has sold then it may not come down much but then we may just see a cut on some aib cards down to msrp level.
Click to expand...

Don't think we have data on how well it's sold vs 4080/4090 combined. 4090 alone had sold > 250,000 units after a few weeks, this was revealed when the whole 12vhpwr drama was playing out.
 
What chipset / motherboards will be the right choice for these new X3D CPU's 670E or 650E
and will DDR5 Memory speed be a important factor, looking for a VR Only Flight Sim Gaming rig DCS / FS2020
 
Last edited:
5950X here, looking to upgrade next year, would a 7950X3D (or possibly 7900X3D) be a decent and worthwhile upgrade? flight sims (FS2020, DCS) use mostly, some high end games.
 
Tetras said:
Probably best to wait, any board you buy now may need a BIOS update and there are no cheap AM5 CPUs if it doesn't boot.
Click to expand...
Also might need certain speed ram. It would be foolish to buy an AM5 system now with a view to upgrading when the x3d chips come out , before their requirements are known
 
rumple9 said:
Also might need certain speed ram. It would be foolish to buy an AM5 system now with a view to upgrading when the x3d chips come out , before their requirements are known
Click to expand...
I’m holding back from buying for this reason. There could be more RAM and motherboards coming out for the X3D release.
 
Last edited:
delta0 said:
I’m holding back from buying for this reason. There could be more RAM and motherboards coming out for the X3D release.
Click to expand...

The X3D's will still have the 6000 M/T's DDR5 recommendation. All these 1st Gen 7xxx Sku's will carry that. The Infinity Fabric (and it's ratio's) is hamstringing these CPU's for high mem clocks. This might even carry on throughout the life of AM5.
 
Legion said:
The X3D's will still have the 6000 M/T's DDR5 recommendation. All these 1st Gen 7xxx Sku's will carry that. The Infinity Fabric (and it's ratio's) is hamstringing these CPU's for high mem clocks. This might even carry on throughout the life of AM5.
Click to expand...
Is expo ram a must or just higher clocks?
 
Don’t think fast RAM makes as much difference on AM5 as on AM4. The difference between 5200 and 6000 looks to be ~2-4% and the price difference can be a lot. I went for 5600 CL36 as it was the best value at the time and I will probably upgrade to 2*32GB at some point.
 
I know this is a little bit of crystal ball territory but I'm planning my next upgrade and I am purely gaming focused so do we think this will definitely be the way to go judging by the 5800X3D's performance or do we anticipate a fairly swift Intel counter? I have no doubt these CPU's will be amazing for games but theres no point in me investing in the platform if Intel are going to counter with something better a month or two after
 
AssaTM said:
I know this is a little bit of crystal ball territory but I'm planning my next upgrade and I am purely gaming focused so do we think this will definitely be the way to go judging by the 5800X3D's performance or do we anticipate a fairly swift Intel counter? I have no doubt these CPU's will be amazing for games but theres no point in me investing in the platform if Intel are going to counter with something better a month or two after
Click to expand...

Intel will likely lack a decent response for a while. The higher up 13000 series CPU's are already very hot and power hungry and Intel may be having some 'issues' with their upcoming node... (maybe a somewhat less serious repeat of the whole 14nm to 10nm debacle)

AMD just got greedy....

after the 5800x3d was released all the higher up 7000 CPU's should have been 'X3d' chips but they thought they could get lots of sales for 7950's 7900's and 7800's and then release the x3d versions at their leisure for even more £££'s

But the market looked at the 7000 series CPU's and the expensive platform they needed at launch and largely said "no thanks not at that price for the performance uplift over the last lot"...
The 7000 series didn't sell well and Intel managed to get ahead with their CPU's again by clocking them close to their limits.
 
Last edited:
They won't release the x3d chips now when they can't sell the existing 7000 series. It's not that AMD got greedy the issue is the high price of AM5 mobos and DDR5 ram. At least with intel you can choose to stay with ddr4 which considerbly cuts the price of an upgrade. Why would an existing AM4 user spend a minimum of £625+ to upgrade to a platform with little additional perfomance when they can just drop in a 5800x3d/5900 for £325
 
ZXSpekky48k said:
Let’s hope it includes 5900x3d 5950x3d etc
Click to expand...
I think it is extremely unlikely.

rumple9 said:
They won't release the x3d chips now when they can't sell the existing 7000 series. It's not that AMD got greedy the issue is the high price of AM5 mobos and DDR5 ram. At least with intel you can choose to stay with ddr4 which considerbly cuts the price of an upgrade. Why would an existing AM4 user spend a minimum of £625+ to upgrade to a platform with little additional perfomance when they can just drop in a 5800x3d/5900 for £325
Click to expand...
They need the X3D to compete with the Intel 13th gen. The recent price drop of the X CPUs looks like they are moving them out of the way for the X3D pricing. Expected to be 7800X3D $449, 7900X3D $549 and 7950X3D $799.
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom