AMD choice

[sargan]

Intend this time (first time) to move off Intel to AMD
Use is for video editing / rendering inc 4k at 100fps on Davinci.

Unsure whether to go for AMD 9900X or 7900X
Performance seems very similar with 9900 only 6% better
The 9900X being Zen 5 Granite Ridge is newer technology and does have 50W lower TDP

Same cache, cores, threads etc.


The 9900X costs about 30% more, what is the view - jump in and get 9900X as power saving will pay for the extra cost in 2-3yrs, and getting later technology chip

 

[sargan]

Get a 7950X and sell the game codes so its around the same price as a 9900X but has 4 extra cores. Run it at ECO 105W and it would probably use less power than the 9900X too.

Even though 7950 is about £50 more you think it a better value for money CPU ?

 

[sargan]

The other option is to wait for the new intel CPU's in mid October. Zen 5 is also likely to be discounted a fair bit by that point.

Thnaks, but I don't want Intel ... want to use AMD

 

[sargan]

In my opinion, the 7950X is the best value AMD chip. It can be found f

I had assumed that Zen5 would be better as architecture nearly 2 years further on, but comparison shows performance is better (assume the 16 cores) the negative seems to be the 170W.
Certainly something for me to consider.

 

[sargan]

I think the point he is making is once intel launch their new chips in 6 weeks then ryzen may see some good discounts.

Sorry had not realised that was the context

 

[sargan]

The 9x chips have much faster AVX512 (20-50%), its just a bit buggy at this time. If the software uses AVX512, it could be worth spending extra. I run my 7950X using ECO 65W (max power of 88W), it looses ~20% multi-core performance at 65W, at ECO 105W (~130W max power) it looses ~ 5-10% but saves > 100W.

OK ... Davinci does not use AVX512 instruction, so could be relevant in my choice.