AMD Ryzen 7 9800X3D

labbby · 2024-11-13T16:11:11+0000

ffs I'm starting to get the itch.

Tetras · 2024-11-13T16:29:08+0000

SuperJoe said:
So, apologies if this sounds dumb, but a BIOS update shouldn't be required before installing this CPU, right? I have a BIOS update ready for my new MSI X870 Tomahawk Wi-Fi ready to go, and I could use BIOS Flashback, but I was planning on going the traditional route of booting into the flash tool via the UEFI.

MSI's support page is not very helpful because it says "latest beta BIOS" for all CPUs, but looking at other X870 boards (e.g. Gigabyte & Asus), they appear to have support for the X3D from the first BIOS release even though it doesn't officially exist.

matty007 · 2024-11-13T16:53:59+0000

labbby said:
ffs I'm starting to get the itch.

You only live once lol

SuperJoe · 2024-11-13T16:54:45+0000

Tetras said:
MSI's support page is not very helpful because it says "latest beta BIOS" for all CPUs, but looking at other X870 boards (e.g. Gigabyte & Asus), they appear to have support for the X3D from the first BIOS release even though it doesn't officially exist.

Same as what I saw. Oh well, I'll do it their way instead of mine just to 'be safe'.

Random Guy Esq. · 2024-11-13T16:55:24+0000

labbby said:
ffs I'm starting to get the itch.

Anusol to the rescue.

petridish · 2024-11-13T17:08:21+0000

Hotwired said:
The temperature of the chip due to the new manufacturing is not the important part.

A 9800x3d turns more watts of electricity into heat than a 7800x3d so in a small computer case where the question is heat build up, the 9800x3d is producing more heat.

Can it be gimped to a lower wattage and still be a better performer? Maybe.

I'm kinda hoping it would maintain stock performance with fewer volts to bring the two closer in line. I'll have as many case fans as I can fit to get heat out so I can maximise GPU headroom.

Poneros · 2024-11-13T17:18:58+0000

Hotwired said:
The temperature of the chip due to the new manufacturing is not the important part.

Not important to who? The people who don't care about their CPU throttling?

Hotwired said:
A 9800x3d turns more watts of electricity into heat than a 7800x3d so in a small computer case where the question is heat build up, the 9800x3d is producing more heat.

Can it be gimped to a lower wattage and still be a better performer? Maybe.

There is no maybe. Fps/w for the 9800X3D is higher = it's a more efficient CPU.

eeii · 2024-11-13T17:25:20+0000

petridish said:
Now that people are getting to grips with the review data and starting to get their hands on them, wonder if anyone can help confirm what I'm thinking.

Going to be putting this in a fractal terra (very small case) and coupling with a higher end GPU (possibly 7900xtx, tbc). So my my main criteria will be to keep heat down.

My thoughts initially were that the slight higher power draw / thermals in some reviews actually makes a case for the 7800X3D for my use case, but on second thoughts the performance per watt is actually still in favour of the 9800X3D. Assuming I can undervolt to help keep temps lower where cooling is limited I'm thinking stick with 9800X3D when I can eventually order one.

Also any thermal focused reviews anyone's spotted that I can have a look over in case I've missed them?

I love my 7900xtx but you do not want to put one in a small case. Untamed she can pull 450watts. Most of them are 3 slots aswell.

petridish · 2024-11-13T17:33:44+0000

eeii said:
I love my 7900xtx but you do not want to put one in a small case. Untamed she can pull 450watts. Most of them are 3 slots aswell.

My only comfort is that there are a few builds on pc part picker that manage with one. Again I'd be looking for a slight undervolt if I can. 3 slots is a concern I'd already picked up on and pushing me towards a smaller CPU cooler than I'd prefer hence my original question. Still, the way the case is layed out with a vertical GPU and spine through the middle I should be able to get a decent amount of hot air straight out.

LtMatt · 2024-11-13T17:38:41+0000

Had a bit more time to play with my 9800X3D and refine my tuning, and whilst these are not going to be my best scores, they are the best I've managed so far using PBO and just today I experimented with an all core overclock.

PBO

All Core Overclock 5.7Ghz (can optimise further for sure)

I've not yet had much success with ECLK, currently PBO scores better so probably need to find the right balance of voltage, e-clock and curve optimiser settings to max out performance there.

@Poneros @Robert896r1

Hotwired · 2024-11-13T18:05:41+0000

Poneros said:
Not important to who? The people who don't care about their CPU throttling?

There is no maybe. Fps/w for the 9800X3D is higher = it's a more efficient CPU.

Not important to the question of which cpu produces more heat which was the question you were replying to...

If you don't understand that the 9800x3d runs cooler AND produces more heat than a 7800x3d then this won't be a happy discussion.

Poneros · 2024-11-13T18:09:22+0000

Hotwired said:
Not important to the question of which cpu produces more heat which was the question you were replying to...

If you don't understand that the 9800x3d runs cooler AND produces more heat than a 7800x3d then this won't be a happy discussion.

It's already an unhappy discussion since you don't understand the simple concept of efficiency.

matty007 · 2024-11-13T18:31:09+0000

petridish said:
My only comfort is that there are a few builds on pc part picker that manage with one. Again I'd be looking for a slight undervolt if I can. 3 slots is a concern I'd already picked up on and pushing me towards a smaller CPU cooler than I'd prefer hence my original question. Still, the way the case is layed out with a vertical GPU and spine through the middle I should be able to get a decent amount of hot air straight out.

YMMV, but my 7900XTX doesn’t like undervolting at all. If I go anymore than 10-15mv under volt, it gives driver timeout errors in some games randomly.

Excellent card aside from that.

RavenXXX2 · 2024-11-13T18:46:03+0000

petridish · 2024-11-13T18:55:20+0000

matty007 said:
YMMV, but my 7900XTX doesn’t like undervolting at all. If I go anymore than 10-15mv under volt, it gives driver timeout errors in some games randomly.

Excellent card aside from that.

Good to know thanks.

Hotwired · 2024-11-13T19:02:58+0000

Poneros said:
It's already an unhappy discussion since you don't understand the simple concept of efficiency.

I'm cool like a 9800x3d benefiting from rearrangement of cache and chiplets about efficiency.

How are you about understanding that temperature doesn't decide the heat output.

snips86x · 2024-11-13T20:08:13+0000

labbby said:
ffs I'm starting to get the itch.

You're not alone, especially comparing 2 generations ago. Anyone found any decent air coolers?

McCarthy · 2024-11-13T20:21:59+0000

I wait patiently for the 9950x3d :rolleyes:

If this is anything to go by, it will be worth it

LtMatt · 2024-11-13T20:22:43+0000

labbby said:
ffs I'm starting to get the itch.

Get it treated mate, or it’ll spread to your belly button and eventually your armpits and ears.

Poneros · 2024-11-13T20:23:40+0000

snips86x said:
You're not alone, especially comparing 2 generations ago. Anyone found any decent air coolers?

Can't go wrong with Thermalright.

Thermalright Phantom Spirit 120 EVO Review: This isn’t a competition. This is a massacre.

As long as it will fit in your case, this is the air cooler you should probably buy.

www.tomshardware.com