stusser
1627
Sure, that’s what curve optimizer is for. But I would expect it to be outrageously buggy at release.
Might give it a go on the 5600X. Input seems to be a sign (‘negative’) and just an integer starting from 1, which is pleasingly simple.
abrandt
1629
Good to know, thanks. I was probably going to hold off on a CPU until the mid-range next gen of GPUs are out(,and hopefully actually available), but now I definitely will.
This is exactly what I’m weighing for a current build. I caved and put together an ebay shell desktop that has a 3700X with a newly sub-$900 3080 Ti, which for most things would see negligible benefit from a 5700X (which has the same 65W TDP). However, for sim racing games, which are very CPU intensive, there’s a noticeable shift into truly high framerates on triple monitors when upgrading from the 3700X, particularly for iRacing and Assetto Corsa Competizione.
Ultimately, I think it’s probably wiser to wait for both newer CPU generations and Nvidia’s 4000 series, since this is the cheapest build I could get that will run literally everything I need it to until at least 2024 when new sims are slated for release, but I am tempted by a CPU upgrade that would push me from double digit framerates into consistent triple digit framerates. At this point, I would wait for new Ryzen CPUs to drive prices down on the 5700X, so it’s almost a moot point, but it’s really not when I consider power efficiency too. It’s the classic midrange dilemma.
5800X3D or whatever it’s called not interesting?
No, I’m still trying to balance price & power efficiency (on a “mere” 750W PSU no less) for the 3080 Ti build. A 5700X would give me a roughly 1/3 improvement in performance over the 3700X without cutting much into those considerations. If I start going any bigger, I’m definitely just gonna go all in on a next gen build. Plus I could get that prebuilt.
Assuming I didn’t just intercept a reply to someone else!
No it was for you :) Just wondered how the X3D chip was for that kind of sim. Meanwhile thought this was funny about the new CPUs…
AMD version:
Proper Y-Axis version :)
Nicked from Videocardz comments.
stusser
1634
It would be insane to buy a 5800X3D now when the 7600X is gonna smoke it.
Different MB etc though. 7600X3D probably incoming too at some point :)
stusser
1636
Right like I said before I wouldn’t buy zen4 right at launch.
stusser
1638
Videocardzzzzz is notoriously inaccurate, they’ll post even the slightest hint of a rumor. Maybe the 3D vcache CPUs will be announced at CES, and then ship later, or maybe the whole thing is bullshit. I wouldn’t hold my breath.
z22
1639
Was hoping Zen4 would run significantly cooler than AlderLake. Only reason I didn’t go with AL was not wanting to water cool it. Now, that may be required for upcoming high end CPUs. Darn.
Looking forward to the full reviews.
It probably will if you undervolt or run at reduced TDP.
But Intel and AMD are in a stick-measuring contest, and at this point they’re less concerned with power consumption than they are with pumping out maximum benchmark results to top one another, and damn the temperatures.
stusser
1641
Exactly right; AMD’s press kit says it scales really well down to 65w so undervolting with the curve optimizer will make a lot of sense. Hell, I did it on my 5950X too. You lose like 5% peak performance and cut power utilization by >20% or even more.
Actually, I do it on my GPU too. Undervolting is cool.
Yeah, you can run a 5900X at 65watt TDP instead of 105watt TDP and you still get like 80% of the performance, but with vastly reduced power consumption and heat.
And Zen 4 is supposed to be a lot more efficient.
stusser
1643
That works (setting “ECO mode”) but is the lame way to do it, via TDP. Curve optimizer is much more involved in that it reduces individual voltages on a per-core basis, but also eliminates most of the performance impact. In fact, in many cases, it can actually increase performance because cores aren’t given power they don’t need, reducing temperatures.
https://www.amd.com/system/files/documents/faq-curve-optimizer.pdf
Look at that. I never knew there was something called Ryzen Master.
stusser
1645
Oh yes, Ryzen Master is essential, if you have a desktop Zen CPU. Most other programs other than hwinfo64 aren’t capable of measuring the Zen chips as they change frequency much faster than Intel.
Finding sim racing benchmarks is hard to do. Assetto Corsa Competizione sets the bar for current gen sims. I’ve had to make do with 3700X vs 5600X comparisons when weighing the 5700X, which again doesn’t change my power usage much, and it uses the same AM4 socket.
Does Ryzen Master work with the older 3700X chips, and is there a way to increase the max boost clock speed in a thermally efficient way via that app? This box came with CPU water cooling, so I probably have extra wiggle room, as long as there’s a way to do it dynamically. A traditional static overclock actually drops performance on these chips, since it’s so thermally inefficient. That would definitely make a 5700X a moot point.
