Replacing my 3900XT based PC

Sparky

Sparky

Sparky

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Hi

I am looking at replacing my old 3900xt system with something a bit quicker and that is DDR5. Uses are the odd game now and then [ BF1 , 2042 etc ] as well as ripping Blurays.

Would this work together and would it be better than my current setup ?

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Sparky said:
Hi

I am looking at replacing my old 3900xt system with something a bit quicker and that is DDR5. Uses are the odd game now and then [ BF1 , 2042 etc ] as well as ripping Blurays.

Would this work together and would it be better than my current setup ?

www.overclockers.co.uk

Login | OcUK

Leading the way in bespoke PC systems and PC gaming, any and all of your components & peripherals needs are met with our vast range of products and services.
www.overclockers.co.uk www.overclockers.co.uk
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You haven't got an old system. Drop a 5700x3d or 5800x3d then your done for a while.
 
So a bit of a unnecessary upgrade regarding the mobo and RAM then ? Will look at the 5700/5800x3d
 
X3D upgrade would be really good price/performance given that you'd have to do a whole platform upgrade to go AM5.

With the disappointing performance of the 9XXX chips I'd personally do 5700X3D/5800X3D and wait.

Have you got 3600MT+ RAM already?
 
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I’ll echo what the others have said. Get a 5700X3D or 5800X3D and you’ll be happy.

Waste of money replacing the whole system when your current one is good enough, especially with a relatively cheap upgrade to an X3D CPU.
 
kaku said:
X3D upgrade would be really good price/performance given that you'd have to do a whole platform upgrade to go AM5.

With the disappointing performance of the 9XXX chips I'd personally do 5700X3D/5800X3D and wait.

Have you got 3600MT+ RAM already?
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No not bought anything yet, current rig is
3900XT
MSI MPG X570 GAMING PRO CARBON WIFI
64gb Corsair Ram
Gigabyte 3060ti
 
yeah just upgrade the cpu like others have said, and spend the change on getting more system RAM or save it to put towards a new gpu in the future, or even a nice new monitor!
 
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Tetras said:
Yes, but in keep in mind while the 5700X3D/5800X3D are great gaming CPUs, in fully multithreaded work they are slower than your 3900XT.
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That was one thing that was making me think twice , I do a lot of decoding and the 3900xt is pretty good for that.
 
Sparky said:
That was one thing that was making me think twice , I do a lot of decoding and the 3900xt is pretty good for that.
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Since there's no 5900X3D/5950X3D on AM4, your only option for both gaming and multithreaded is an upgrade to AM5 and a 7900X3D or 7950X3D.

The 5950X IS faster than your 3900XT, both in games and fully multithreaded work, but the gap is much less in games than to the 5700X3D/5800X3D.

By the way, if the encoder/decoder uses AVX512 (I believe AV1 can) then the difference is pretty big between the 7000 and 9000 series CPUs.
 
Tetras said:
Since there's no 5900X3D/5950X3D on AM4, your only option for both gaming and multithreaded is an upgrade to AM5 and a 7900X3D or 7950X3D.

The 5950X IS faster than your 3900XT, both in games and fully multithreaded work, but the gap is much less in games than to the 5700X3D/5800X3D.

By the way, if the encoder/decoder uses AVX512 (I believe AV1 can) then the difference is pretty big between the 7000 and 9000 series CPUs.
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OK then so its either go full hog like my original feeling or upgrade CPU/GPU and stick with AM4. If I went for a 4070Ti I assume the 3900xt would become a bottleneck?
 
Sparky said:
OK then so its either go full hog like my original feeling or upgrade CPU/GPU and stick with AM4. If I went for a 4070Ti I assume the 3900xt would become a bottleneck?
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You’ll always have a bottleneck, it just changes as you upgrade.

If I was you, I’d keep the 3900XT and get the better GPU.

the 3900XT isn’t the fastest anymore but it’s not bad and if you wanted to upgrade the whole system down the road, you could then build it up around a better GPU
 
Sparky said:
If I went for a 4070Ti I assume the 3900xt would become a bottleneck?
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It would, but like JollyJamma says, you'll always have a bottleneck somewhere and if you only play the odd game now and then, you likely won't care about 250 fps versus 200 fps.

Sparky said:
OK then so its either go full hog like my original feeling or upgrade CPU/GPU and stick with AM4.
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It does depend on your usage, I mean you'd have to check specific benchmarks and investigate, because the scaling with cores is not always easy to predict and it varies on the app and with encoding/decoding it also depends on the codec.

This is a really rough comparison from PassMark (single core/thread, multi core/thread).

Note that the X3D CPUs have much better performance in games than their single thread scores suggest, because of the cache.

Ryzen 9 3900 XT (AM4): 2745, 32680
Ryzen 7 5700X3D (AM4): 2980, 26306
Ryzen 7 7800X3D (AM5): 3748, 34247
Ryzen 9 7900 (AM5): 4150, 48823
Ryzen 9 9900X (AM5): 4720, 54804
 
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