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AM4 CPU "upgrade" 5700X or 5800X3XD

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So I am basically redoing my little ITX machine I build back in 2019 for gaming and productivity work. It was fittet with 32GB DDR4 3600MHz memory, Gigiabyte X570 Aorus ITX, RTX 2070 Super and a Ryzen 9 3900X with a 240mm AIO fitted in a Sharkoon QB one case.
After the hiatus I have come to the conclusion that productivity work isn't really being done, so the core potential does really get utilized, and gaming is more getting the focus (I've been missing that for almost 2years).
So right now I am waiting for my AMD Radeon RX 6800 16GB to arrive, and in the same upgrade process I was thinking if swapping CPU would be beneficial to improving the "legs" of the RX 6800 and bring some more performance to the table.
The perfect choice would obviously be a Ryzen 9 5900X where I could keep the same core count and more performance, but knowing I wouldn't do any productivity work I think it might just be a waste of cores ? (And also the price for one new is more than I'm willing to pay at the moment)
So I am wondering if downgrading in cores to something like a Ryzen 7 5700X would be a "sane" move to get more gaming performance. Or would it be better to go for a 5800X (it's just €15 more from new over the 5700X)...or is 5800X3D the best choice here ?
I am sorry for the long post. I have looked and several reviews of 5700X, 5800X and 5800X3D and comparisons with the 3900X, but it hasn't made the decision process any easier. So any real on hand knowledge would be much appreciated.
 
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The 5900x is very close to the 5800x3d in games but some like msfs love the extra l3 cache on the x3d .

Google

5800x3d v 5900x gaming .
 
The 5900x is very close to the 5800x3d in games but some like msfs love the extra l3 cache on the x3d .

Google

5800x3d v 5900x gaming .
Yea the 5900X would also be the optimum choice keeping the 12 cores, but pricing is a but more than I'm willing to go for, and the used cpu market isn't flowing with them, and those I found were just about €30 cheaper than a new one.

The 5700X and 5800X are both significantly cheaper at €160 and €170 new.
 
Yea the 5900X would also be the optimum choice keeping the 12 cores, but pricing is a but more than I'm willing to go for, and the used cpu market isn't flowing with them, and those I found were just about €30 cheaper than a new one.

The 5700X and 5800X are both significantly cheaper at €160 and €170 new.
Then wait

It's your call and finances But selling your 3900x will bring cost down but I'm not sure it's rely worth it especially gaming above 1080p.

3900x v 5800x

 
I wouldn't bother with the 5900X. Either go cheap (5700X) or go hard (5800X3D).
Yea it will most likely be the 5700X, only 65watt TDP which I positive on the power bill these days. The 5800X3D is definitely interesting but priced at the same level of a 5900X and the fact a AM5 7800X is nearly the same price also, just doesn't make it that attractive from new.
 
That is a bit more than getting a 5800x new. The extra cores can't hurt. Should last you until AM5 is out.
I was ready to purchase a new Ryzen 7 5700X for £161 (5800X was £184), but a person I purchased some used hardware from before reached out to me that he had a R9 5900X he would be selling.
So I went that route. A new 5800X3D/5900X costs the same here, approximately £400, so in that regard some quid were saved.
 
As you say you're not doing any productivity work, but want to upgrade your CPU for gaming, a 5700X is a fine choice. I have mine paired with a 7900 XT and am very pleased, although I'm chasing high resolutions at lower refresh rates (max 100 Hz).

Someone here helped talk me out of going for the 5800X3D a good few months ago and saving the money. I found out that was the right call for me.

In terms of future proofing, I'm of the opinion the 5800X3D and 5700X will be 'going down' together. I'm very doubtful coughing up the extra money for a 5800X3D will buy you more time than with a 5700X. When the 5700X is a 50 fps CPU, the 5800X3D will be a 50-60 fps CPU tops, game depending.

My 5700X with decent cooling and a small offset undervolt happily boosts to a consistent 4,650 MHz. The 5800X is supposed to boost to 4,700 MHz, so I hear. I'm happy knowing I have the lower TDP 5700X and am achieving nearly the same speed.
 
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As you say you're not doing any productivity work, but want to upgrade your CPU for gaming, a 5700X is a fine choice. I have mine paired with a 7900 XT and am very pleased, although I'm chasing high resolutions at lower refresh rates (max 100 Hz).

Someone here helped talk me out of going for the 5800X3D a good few months ago and saving the money. I found out that was the right call for me.

In terms of future proofing, I'm of the opinion the 5800X3D and 5700X will be 'going down' together. I'm very doubtful coughing up the extra money for a 5800X3D will buy you more time than with a 5700X. When the 5700X is a 50 fps CPU, the 5800X3D will be a 50-60 fps CPU tops, game depending.

My 5700X with decent cooling and a small offset undervolt happily boosts to a consistent 4,650 MHz. The 5800X is supposed to boost to 4,700 MHz, so I hear. I'm happy knowing I have the lower TDP 5700X and am achieving nearly the same speed.

The 5700X definitely is a solid choice and it also would have been the CPU I had opted for and purchased from new, if it wasn't for the deal I got on the 5900X.
 
A solid choice and avoids a potential situation where you find yourself regretting 'downgrading' from 12 cores to 8, even though a 5700X would be faster than a 3900X in nearly all use cases. Keep in mind the 5900X gets hot which might be an issue in a small ITX machine.

To be honest the X3D chips are a bit annoying, I like the concept but the price premium feels a bit excessive (even if it's somewhat justified for gaming).
 
A solid choice and avoids a potential situation where you find yourself regretting 'downgrading' from 12 cores to 8, even though a 5700X would be faster than a 3900X in nearly all use cases. Keep in mind the 5900X gets hot which might be an issue in a small ITX machine.

To be honest the X3D chips are a bit annoying, I like the concept but the price premium feels a bit excessive (even if it's somewhat justified for gaming).
Yea I am pretty happy I held out just a bit and the deal appeared.
I'm using a Corsair H100X 240mm AIO with Noctua NF-A12x25 fans and it does a good job of cooling... I had a 3950X (this one went into my main rig) in there briefly and temps were fine.
 
Hi all how much better for gaming is the 5800x3d over the 5700x I am in same boat have a 3900x feeling a little sluggish price difference is 100 quid how much % better is it I game at 1440p with a 5700xt atm
 
It depends on the game, it can be anywhere from 3% to 40%.


If it was me (assuming you don't play a game that loves the cache), then if you're planning to keep the 5700 XT and later dump the lot: I'd get the 5700X. If you're going to upgrade the 5700 XT: then buy the X3D.
 
Used 5800x can be had for less than a new 5700x so thats an option too. If gaming is your main use then the x3d is better for hanging onto am4 long term
 
Used 5800x can be had for less than a new 5700x so thats an option too. If gaming is your main use then the x3d is better for hanging onto am4 long term

I agree with this, the boost you get is very game dependent. I've decided to upgrade my 3600X to the X3D to try and prolong my AM4 journey as much as possible, should offer a good boost. I purely came on mine so the benefit of extra cores isn't a consideration. When it comes down to pure value it gets a bit more tricky since the X3D is that bit more...
 
Got my Ryzen 9 5900X yesterday and it was a nice improvement over my older Ryzen 9 3900X. Approximately a 19~23% performance uplift in the games (cpu bound titles) and applications I tested in.
However after the pc was in storage for almost 2 years I've discovered the CMOS battery is almost completely drained and the BIOS settings keeps resetting when all power has been cut to the PC.
And of course because it is an ITX board it isn't easy accessible batteri. I have to disassemble the whole machine to get the motherboard out and remove the shroud that hides the battery.
Waiting for the battery to arrive in mail since it is not just one of those simple ones you can purchase anywhere. Nope has to be shrink wrapped and with connector piece.
 
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