Advice on new build

[sasani]

I've just got my hands on an Asus x670e-i motherboard for £200 and regularly see 3090s going on ebay for £500-600.

I haven't built a PC for a few years and want to know what AM5 CPU to get? I want to keep costs down and so was thinking of going for a 7600x, but I'm worried this would bottleneck the GPU.

I will only use it for gaming.

I guess I also am keen to know if the 3090 is a bad idea.

Appreciate any advice.

 

[ShrimpBrime]

Any X3D chip you can find would be good.

Depends on where you get the 3090. If used for cheap, there's a gamble involved because you don't know if it was abused and no warranty. If you have the money for a used 3090, it might be wiser to get a New 4070 or 4080. Both around the same performance of a 3090, but New. So warranty and no signs of abuse.

GL with your coins!

 

[Woomack]

There are price cuts for the 7800X3D, and I would get that for gaming. I also would consider the new RTX4070 Super, which performs well for the price. You can find them for £500, but I wouldn't count on gaming at 4k+ and max details in everything. It still handles most titles at 4k and has a high enough FPS.

 

[mackerel]

7600X is ok, comparable in gaming performance to the best AM4 gaming model: the 5800X3D. If you can stretch a bit more, 7800X3D is the current best gaming CPU. Initial wave of Zen 5 CPUs due in next month are not expected to beat it.

The main benefit of a 3090 is that it has 24GB of VRAM if you have something that needs more than current consumer tier GPUs. Obviously buying used as an element of risk. Assuming you're in the UK consider looking at Cex as you'll get store warranty which you wouldn't otherwise. In a quick look on their site their cheapest in stock is from £600.

If you go new, you can get 4070 Super in budget, starting from £550. It is slightly slower than a 3090 but you do gain the newer features and it is much more power efficient.

 

[sasani]

Thanks for the tips - I opted for 7600x (needed to keep the costs down) with 4070 Super.

Benefit is that I can keep my PSU so a bit more saved there.

I hardly have time to game any more - I just really wanted to build a new PC

 

[sasani]

Just finished my build. I actually had so much fun I decided to throw caution to the wind and experimented with a lot of different parts. 7600x, 8700g and finally got 7800x3d.

I also downgraded the mobo to gigabyte b650m autos elite ax.

WIth 7800x3d I got a decent performance bump with xmp, but curve optimizer of -30 not really doing anything in cinebench. Is it worth keeping it or should I just leave it at stock? It's perfectly stable. I could mess around with per core but not sure it'll be worth the hassle.

Is there any other bios tweaks I should consider?

 

[PimpyBoy]

Just finished my build. I actually had so much fun I decided to throw caution to the wind and experimented with a lot of different parts. 7600x, 8700g and finally got 7800x3d.

I also downgraded the mobo to gigabyte b650m autos elite ax.

WIth 7800x3d I got a decent performance bump with xmp, but curve optimizer of -30 not really doing anything in cinebench. Is it worth keeping it or should I just leave it at stock? It's perfectly stable. I could mess around with per core but not sure it'll be worth the hassle.

Is there any other bios tweaks I should consider?

Can you share some overclocking insighs, I would like to learn something new for me , thank you

 

[]-[itman]

Just finished my build. I actually had so much fun I decided to throw caution to the wind and experimented with a lot of different parts. 7600x, 8700g and finally got 7800x3d.

I also downgraded the mobo to gigabyte b650m autos elite ax.

WIth 7800x3d I got a decent performance bump with xmp, but curve optimizer of -30 not really doing anything in cinebench. Is it worth keeping it or should I just leave it at stock? It's perfectly stable. I could mess around with per core but not sure it'll be worth the hassle.

Is there any other bios tweaks I should consider?

-30 on CO will just tell it to use less voltage, it won't push your frequency up at all unless it was running into thermal/power/current limits before. Honestly, the X3D parts run so efficiently already, I would just leave it at stock and not risk a potential stability problem unless you just really want to play with it and squeeze every bit of efficiency you can out of the CPU.

Post magically merged: Aug 5, 2024

Can you share some overclocking insighs, I would like to learn something new for me , thank you

If you have a specific question, I would suggest starting a new thread and people can help you there.

 

[sasani]

So I kept tweaking and also played around with LLC a little - got my best cinebench score but still only marginal gains and temps were getting to 85 - didn't think it was worth it and manually set eerything back to stock and just kept the EXPO - After this I kept getting minute long spikes in temperatures every 10 minutes or so and the system would get buggy during those periods. While playing a game temps spiked to 90.5 which freaked me out as 89 is the max for 7800x3d. I then reset BIOs to optimised defaults and set EXPO and everything went back to normal. Finally I tried the PBO Enhancement to set Curve Optimised to -20 and limit temps to 80 degrees and this is pretty much the same as the best performance I managed with everything else. Very happy with the 80 degree limit, gives me peace of mind.

 

[Flamethrower1972]

Thanks for the tips - I opted for 7600x (needed to keep the costs down) with 4070 Super.

Benefit is that I can keep my PSU so a bit more saved there.

I hardly have time to game any more - I just really wanted to build a new PC

If ya don't game anymore F@H on it for team 32.

 

[sasani]

If ya don't game anymore F@H on it for team 32.

Never heard of this before. Thanks for the suggestion.

 

[Kenrou]

Negative curve optimiser, as hitman said, will tell your CPU to use less voltage, but it has 2 other upsides, less heat and (if it's stable) because of it, higher/ more stable boost clocks during gaming. You won't see it in cinebench/prime that loads all cores but it usually shows in higher score during 3dmark and gaming, try it out