Question I'm concerned about heat and choosing between Ryzen 5700X and 5900X ?

Oct 13, 2024
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I'm upgrading from a Ryzen 1700X on a Asrock B350 board. Built it in 2018 and had absolutely ZERO issues.

Right now and up to Jan 12th I need to make a decision if I should go with the Ryzen 5700X or the 5900X.
I have them both, unopened and ready to upgrade update the BIOS and install one OR the other.

Cooling is a new Thermalright Phantom Spirit 120

RAM: Upgrading from 2 x 8GB 2400 to 2 x 16GB 3200

GPU: Upgrading from RTX 660 to Asus Dual RX 6600

PSU: 525 watts

Case: Conventional mid tower

Everything was bought from Black Friday and I was suppose to put up this post a long time ago to upgrade but delayed...because if i went ahead, i was afraid of any problems that would pop up and i couldn't use the computer.

1***Because of concerns for heat issues and longevity, do i go to the 5700x or go all the way to 5900x?

2***Is the fan going to be a lot noisier?


3***If I go with the 5900x, can I limit voltage or is there software built in to throttle the heat issue?

4***Do I have enough power to run the 5900x?


I'm not a gamer, I just run AutoCad, Chief Architect for fun and surf. I want to cut down on some of the larger design that take up time to process. I just have to January 12 to bring one or the other processor back.

HELP!!! And thank you in advance!

(BTW...I trust opinions from you guys 1000x more the computer part jockeys at BestBuy!)
 
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Ideally, we need to know the exact model number and revison of your B350 motherboard and similarly, the manufacturer and part number for your "525W" PSU.

Personally, I'd opt for the 5900X, but I'd be happier placing it on a motherboard with heatsinks on the VRMs. Still, if you don't overclock it with PBO, a B350's VRMs should cope.

Provided you have a high quality PSU, 525W might be sufficient, but I'd factor in a good 650W or 750W unit if the warranty on your existing PSU has run out.

I run my 7950X up to its 95C limit from time to time in video renders, using an NH-D15 air cooler.

If you're desperate to keep things cool, you could mess around with CPU power limits in the motherboard BIOS, but I wouldn't bother. Modern CPUs are designed to boost up to the thermal ceiling unless you're paranoid.
 
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The main difference is that 5700x has 16 processing threads, and the 5900X has 24.
If your app can use all 24 threads, opt for the 5900X.
You might go 5900X regardless.
There are any number of ways to limit heat, IF it is a problem.

What is the make/model of your case?
The cooler is a good one and should be sufficient in a well ventilated case.
Noise comes from small fans running at high rpm.
If you want the absolute best air cooler, look at the new noctua NH-D15G.
It will be very quiet at any load.
Noctua maintains a list of suitable air coolers.
Here is the list for the 5900X:
https://ncc.noctua.at/cpus/model/AMD-Ryzen-9-5900X-1045

What is the make/model of the 525w psu?
PSU requirements are defined mostly by the graphics card. I suspect that your 525w psu may be old and insufficient.
 
Ideally, we need to know the exact model number and revison of your B350 motherboard and similarly, the manufacturer and part number for your "525W" PSU.

Personally, I'd opt for the 5900X, but I'd be happier placing it on a motherboard with heatsinks on the VRMs. Still, if you don't overclock it with PBO, a B350's VRMs should cope.

Provided you have a high quality PSU, 525W might be sufficient, but I'd factor in a good 650W or 750W unit if the warranty on your existing PSU has run out.

I run my 7950X up to its 95C limit from time to time in video renders, using an NH-D15 air cooler.

If you're desperate to keep things cool, you could mess around with CPU power limits in the motherboard BIOS, but I wouldn't bother. Modern CPUs are designed to boost up to the thermal ceiling unless you're paranoid.
One step forward...one step back....

I just want to improve the file conversion times. The house cad files are getting so big that even a simple task like saving my work runs into 15 second delays. Converting a pdf to dxf can be a 3 minute wait.

I'm hoping the 5700x can cut 3 minute jobs into a minute and I don't care as much if the 5900x cuts another 5 seconds. Unless the 5900x makes 3 minute jobs into 30 seconds, it won't be worth any potential headaches.

Problem is, I won't know until I do the changes. Of course if someone has experience, I love to hear about it.
 
Since autocad is primarily single threaded im not sure if either will really matter, technically the 5900X has slightly faster base and boost clocks, but it wouldnt be a night and day difference, the 5700X runs at 3.4 Ghz base and 4.6 Ghz boost vs 3.7 and 4.8 Ghz on the 5900X. The 5900X is the better cpu, but it likely wont be a night and day difference between the two for most of your tasks.
 
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One step forward...one step back....

I just want to improve the file conversion times. The house cad files are getting so big that even a simple task like saving my work runs into 15 second delays. Converting a pdf to dxf can be a 3 minute wait.

I'm hoping the 5700x can cut 3 minute jobs into a minute and I don't care as much if the 5900x cuts another 5 seconds. Unless the 5900x makes 3 minute jobs into 30 seconds, it won't be worth any potential headaches.

Problem is, I won't know until I do the changes. Of course if someone has experience, I love to hear about it.
You may also want to look at getting 64GB ram (running at at least 3200 mhz) and as fast an SSD as you can get to help with these times as well.
 
I have no idea how much of an improvement I will have going from 1700x to 5700x. It could be multiples or it can be two figure percentages.

I was going to upgrade to a B650, 7700x and memory, but now the $600 creeps to $900 AND a couple of hundred for Windows. At that point, might as well build a complete unit.

After i build the house, I don't care about speed. It didn't bother me for the last 6 years and not likely to bother me for the next 6 years. By then, the 9900x is $200 and another round of upgrade is $600.

I remember my first computer was $3,300 and today's money, close to $8,000. Then 5 builds capped at $1200. That's why I'm still running a RTX660 from 2012. Two builds ago.

From memory...1985...1992...1998...2005...2012...2018....2024 upgrade...next is the brain chip implant...
 
i have a 5900x with a peerless assasin 120 on it. it runs very cool and quiet. heat won't be an issue with the better cooler you're looking at. i have PBO enabled and let it do whatever it wants. don't think i've ever seen it above 75 degrees even running a torture test.

as for how it will effect your program times vs a 5700x is hard to say. does what you are doing now already use every core you have? can it use more cores? it's not faster single core operations you're getting with a 5900x vs a 5700x. but rather more cores to do more work if your program can use them.