Time for a new rig

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Agathon
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Joined: Sat Apr 05, 2014 3:17 am

Time for a new rig

Post by Agathon » Sun Jan 19, 2020 1:38 pm

Its been a couple of years since I last updated my PC. Thanks to this forum it served me well ;)

Now its time for an update.
Parameters did not change much. I still hate anything that makes noise in my PC. Still working, still playing games. Dont care much about costs, as I am not updating my computer all the time.

To make up my mind, I do have a couple of questions:
- CPU: For many years there was consensus that Intel was the preferred option. Now I do see AMD chips that may also be interesting, eg: Ryzen 7 3700x, it has a TDP of 65W wich is significantly less compared to its intel counterparts. The 7nm seen to matter. I read a couple of reviews where the real consumption was measured and the 3700x excelled. Do you guys consider AMD these days? Am I missing something?
- GPU: Again looking at the power consumption, I got interested in the Radeon VII. When undervolted it looks like to be a powerful, yet less power consuming card. Problem is that the dba are madness. Some reports say its around 50dba! The modders that I came across try some stunts to make it better, but still looks like to be a hot and loud card. In a couple of places I saw praises for EVGAs cards in general. Can this be confirmed? What is currently the best power to noise card in your opinion?
- RAM: Not much to say here, looks like Corsair is good
- PSU: Had bad luck with my last PSU from Seasonic, it fried by GPU at some point, capacitor went puffff. Have a corsair now. A bit unsure in what W I should go for. I currently think of 750W. Any brand alternatives that come to mind?
- Case: was planning to stick to my current Fractal Design case.
- MB: Did not yet dive into this topic yet, any advise is welcome.

Would be great to hear your advise!

CA_Steve
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Re: Time for a new rig

Post by CA_Steve » Sun Jan 19, 2020 4:54 pm

AMD has certainly gotten back in the game. It's worth considering for your build. Note the marketing smoke and mirrors regarding TDP these days from both Intel and AMD. It's best to look at reviews that compare the processors you are interested in with app loads you use and see the actual power usage.

While AMD is using a smaller sized process for their GPUs, Nvidia still has a bit of a lead on fps/W...part dependent. Here's a comparison of the VII vs RTX 2070 Super @ Anandtech's Bench.

When you narrow down the CPU and GPU choice we can chat about PSU sizing. That said, the total system power in the above comparison was 300W under gaming load. So, chances are a 650W class PSU will be quiet while gaming.
1080p Gaming build: i5-4670K, Mugen 4, Asrock Z97 Anniversary, MSI GTX 1660 Gaming X, 8GB 1866 RAM, Samsung 860 Evo 500GB, Crucial MX100 256GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front+rear) case fans, Seasonic SSR-550FX. 35W idle, 45-55W video streaming, 170-200W WoW, 318W stress test (Prime95 + Furmark)

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CA_Steve
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Re: Time for a new rig

Post by CA_Steve » Tue Jan 21, 2020 11:53 am

.and then things change. Looks like AMD did a bit of tuning with the 5600 XT. Excellent performance / Watt. Too bad they still didn't resolve the multi-monitor RAM clock power issue.
1080p Gaming build: i5-4670K, Mugen 4, Asrock Z97 Anniversary, MSI GTX 1660 Gaming X, 8GB 1866 RAM, Samsung 860 Evo 500GB, Crucial MX100 256GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front+rear) case fans, Seasonic SSR-550FX. 35W idle, 45-55W video streaming, 170-200W WoW, 318W stress test (Prime95 + Furmark)

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Olle P
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Re: Time for a new rig

Post by Olle P » Fri Jan 31, 2020 6:29 am

I'm all for Ryzen CPUs. Steve's comment on TDP is possibly true for the high end models. I run an R5 3600X which has an official TDP of 95W and it's using a solid 70W at full load.

As for AMD's GPUs they aren't very power efficient when running at their regular factory overclocked speed.
If frequency and voltage is dropped to levels that are more suitable from a technical perspective they become power efficient. That's why for example Vega cards were highly praised by cryptominers a few years ago.
It's really poor price performance to run the cards at that level though.

I suppose a slightly underclocked and undervolted RX 5700X would be a nice buy. Don't know how well Turing cards respond to power reduction.

Agathon
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Joined: Sat Apr 05, 2014 3:17 am

Re: Time for a new rig

Post by Agathon » Thu Feb 13, 2020 11:16 am

Thanks for the comments so far. I must confess that my last AMD build was probably over 15 years ago. At that time to find a compatible combination of board, CPU, RAM and GFX was an art on its own.
Are you aware of specific reviews around getting CPU and GPU silent for those new AMD parts? Power consumption is not the only factor I guess. In some reviews I came across so far you see comments of strange high frequency sounds.

Abula
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Re: Time for a new rig

Post by Abula » Thu Feb 13, 2020 12:44 pm

CA_Steve wrote:
Tue Jan 21, 2020 11:53 am
Too bad they still didn't resolve the multi-monitor RAM clock power issue.
Nvidia is really nice when you have 2 60hz monitors, but if you have one 144hz the clocks get screwed, if you drop multi monitor you can have a single 144/240 and still downclocks correctly... but in my particular case, what i did was to have my 240hz monitor off unless im playing fps games, and the 4k60 2k60 are the two monitors that i use on the daily basis, but as soon as i introduce a 60+ monitor like 4k120 ill be screwed with the clocks and nvidia, for this i simply think that AMD isnt a bad option.
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Agathon
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Re: Time for a new rig

Post by Agathon » Sun Feb 23, 2020 3:26 am

Not sure if I understand the issue correctly that you are talking about, can you explain a bit please?
I am running dual screen at all times. Most if the time its just standard work or surfing. I dont play intensive FPS games these days anymore. The 2 screens are from the same type and brand (Dells).

CA_Steve
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Re: Time for a new rig

Post by CA_Steve » Sun Feb 23, 2020 7:10 am

From that same 5600 XT review. AMD's card keep the RAM clock running at rated speed rather than downclocking to the few hundreds of MHz when there's more than one monitor connected. Nvidia's cards do - except for the case Abula mentioned.

In your use case, an AMD card would use 18 to 36W for general web browsing and other 2D tasks while an Nvidia card would use 5 to 21W (all depending on which card in the stack you get...).
1080p Gaming build: i5-4670K, Mugen 4, Asrock Z97 Anniversary, MSI GTX 1660 Gaming X, 8GB 1866 RAM, Samsung 860 Evo 500GB, Crucial MX100 256GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front+rear) case fans, Seasonic SSR-550FX. 35W idle, 45-55W video streaming, 170-200W WoW, 318W stress test (Prime95 + Furmark)

Support SPCR through these links: Amazon and Newegg

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