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*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

I suppose AC: Odyssey is just one of those games that works terribly with SMT enabled (seems to vary between models).

Reviewers should aways test new CPUs with HT/SMT on and off...
 
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Both seem expensive to me especially when you get both 32gb of ram and a motherboard for £200 then drop a 5800X3D for literally the same performance as Zen 4 will give.
But in fairness when AM4 5000 series dropped good ddr4 3600Mhz was £240 ish and it took me 5 weeks of looking to get a kit with low CAS for that and setting up multiple price alerts.

You can if you look about get CL30 6000Mhz 32GB kits for that fine so relative to previous release they aren't any more expensive for newer products.

And yeah you can do that to get same performance now but a 7000 series 3D cache likely to smash that. And you can just drop another CPU in next gen and get another 20-25% performance jump then.

Just need B series boards to release. It's not like the z790 boards are cheaper than the x670 boards. They all 5-10% more for Intels latest too. Both as bad as each other on motherboard side.
 
Will i get bad performance impact or anything else in gaming if i pick b650 mobo over b650e or x670/x670e with upcoming zen 4 x3d chip,1x16gb 6000 cl 36 ddr5 ram,and fast nvme drive insert into closest slot to the cpu.
 
Will i get bad performance impact or anything else in gaming if i pick b650 mobo over b650e or x670/x670e with upcoming zen 4 x3d chip,1x16gb 6000 cl 36 ddr5 ram,and fast nvme drive insert into closest slot to the cpu.
There will be no difference unless you want to use a PCIE 5 SSD (they aren't even out yet) and even then it will be many years before such a fast SSD is fully utilised.
 
This is the best specced B650E board I've seen so far:

ASROCK-B650-SPECS-2_videocardz-768x429.jpg


High end VRM and USB4 (just 1 port!).

Hopefully, we will see a couple more boards like this, from other manufacturers.
 
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But in fairness when AM4 5000 series dropped good ddr4 3600Mhz was £240 ish and it took me 5 weeks of looking to get a kit with low CAS for that and setting up multiple price alerts.

You can if you look about get CL30 6000Mhz 32GB kits for that fine so relative to previous release they aren't any more expensive for newer products.

And yeah you can do that to get same performance now but a 7000 series 3D cache likely to smash that. And you can just drop another CPU in next gen and get another 20-25% performance jump then.

Just need B series boards to release. It's not like the z790 boards are cheaper than the x670 boards. They all 5-10% more for Intels latest too. Both as bad as each other on motherboard side.
I feel like this is a really good take. I'm gonna wait for b series boards to drop then buy a 7950x esp as another forum member mentioned that amd don't really restrict anything on b series boards.
 
Thx for this,so with zen 4 is the same situation like with zen 3 (5800x3d) works great with any ram and with any mobo?
You need two sticks of DDR 5 RAM not one, but other than that yes. If you must get only one stick you can but there will be a hit to performance, but I'm not sure how big it will be. Any speed from 5200MHz and up is fine as long as latency is decent (5600MHz to be absolutely sure), also if it says EXPO it has been optimised for AMD Zen 4 with more tuned timings than XMP would usually set.
 
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You need two sticks of DDR 5 RAM not one, but other than that yes. If you must get only one stick you can but there will be a hit to performance, but I'm not sure how big it will be. Any speed from 5200MHz and up is fine as long as latency is decent (5600MHz to be absolutely sure), also if it says EXPO it has been optimised for AMD Zen 4 with more tuned timings than XMP would usually set.
Is it worth paying the extra tenner or so for optimised for AMD ram? Can't you just change the settings in the BIOS anyway?
 
2x this one

KF560C36BBEA-16​


can you explain why :)
Don't buy separate sticks, buy a kit like this one:


You need two sticks in order to maximise the number of memory channels in use which improves performance.
 
Is it worth paying the extra tenner or so for optimised for AMD ram? Can't you just change the settings in the BIOS anyway?
Well they are supposed to tune some subtimings for you and guarantee their stability which saves work and the profile is automatically applied (no having to enable XMP in the BIOS) which is good for people who are not very experienced with hardware. However, for those of us who are more experienced maybe it's not worth it, but I do like saving myself some time and for it to just be plug and play.

Edit:that plug and play is not due to EXPO but is a Kingston feature and I don't think it works as I thought, you still have to enable EXPO in the BIOS.
 
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i dont need 32gb in any scenario,ok i try to find 2x8gb kit 6000,does CL 40 or 36 plays big roll for 7000 x3d or not
With X3D I am pretty confident you would be able to get away with 5200MHz if it's cheaper. I doubt the CL difference will be anything other than negligible on this chip.

I would wait for prices to come down on the motherboards and memory before buying anything if you are waiting for the X3D, people will be able to test how much RAM matters when it's released (although it's probably like 5800X3D).
 
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