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GTX 3070

Vale

Vale

Vale

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Joined
25 Dec 2008
Posts
353
Location
Birmingham
I've a 450W BEQUIET PSU. 8600G cpu, 3 NVME drives and 2 SSD drives. Currently running a GTX 1080.
In gaming my plug in wattage meter goes up to 282W, on browsing it is stable at 66.5W.

The power difference between a GTX 1080 and an RTX 3070 is 70W give or take.
In Theory my system should handle that?
Google and other sources say 550W PSU minimum.

If I buy the RTX 3070, will it run OK or do I need a better PSU?

Thanks.
 
I can't remember for certain now, your 8600G will give more leeway, but when I had my Xeon 1650 V2 w/ 3070 setup IIRC was seeing around 415-460 watt full system power draw when gaming. Unfortunately the only 3070 I have in use right now is in a TB4 enclosure so can't easily re-test to see.
 
I'd be looking at a good 650W for that tier of card, and tbh I'd argue it's a poor buy second hand as of the end of 2024 unless you get an absolutely fantastic deal.
 
If you undervolt it that should whack 50+w off and be similar to your gtx 1080 in power draw

I've had my 3080 undervolted since I got it in 2020, 330w stock to 250w undervolted with the same performance.
 
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I run a 3060ti with a 13600K undervolted thats runs around 125w with a 500w PSU and have no issues, the 3070 was not only expensive at the time I was not going to risk it.

AMD alternatives are a no go above 8GB VRAM except maybe the 7600XT 16GB as they power spike above 300w which was one of the reasons why I ditched the 6700XT vs the 3060ti. The other was that a 6700XT was around £260+ and I got the 3060ti for £190 at end of December a year ago.
 
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greatash said:
If you undervolt it that should whack 50+w off and be similar to your gtx 1080 in power draw

I've had my 3080 undervolted since I got it in 2020, 330w stock to 250w undervolted with the same performance.
Click to expand...

Not guaranteed though - one of my 3070s would only drop about 30w before stability/performance was impacted, I seem to recall my FE card didn't like reducing voltage at all, and they can still have quite big power transients especially with certain games for some reason.
 
Whats your budget? Probably more suitable cards than a 3070. Whats the exact PSU model?

Your PSU is likely fine though. Just try it and see.
 
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Power supply is a BEQUIET 450W Power 10. I settled on a cheaper 2070 Super Black Edition. Does everything I want it to. With my In-the-wall wattage meter, it only hits 330W maximum on Heaven benchmark. Gaming is fine, playing the new Indiana Jones game at the moment. All good. Thank you for everyone that replied.
 
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That is 450W to the 12V rail, should be enough long term.

That card also uses a near identical amount of power to the 3070.
 
muon said:
That is 450W to the 12V rail, should be enough long term.

That card also uses a near identical amount of power to the 3070.
Click to expand...

Average power consumption is close - off the top of my head something like 12w difference but the 3070s can spike way higher - igorslab had the 3070 causing the system to reboot on a 500 watt Pure Power Gold albeit with a more power demanding CPU in there. With the 8600G might just about get away with it.
 
Rroff said:
Average power consumption is close - off the top of my head something like 12w difference but the 3070s can spike way higher - igorslab had the 3070 causing the system to reboot on a 500 watt Pure Power Gold albeit with a more power demanding CPU in there. With the 8600G might just about get away with it.
Click to expand...

People said the same think about Turing.

The reason it was so prominent for Ampere was because nvidia provided everyone with that new power monitoring tool.
 
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So being cautious as I am, I bought a new power supply. 700w, ran Heaven benchmark for all of 10 seconds before exploding and took most of the pc with it. GPU dead, board dead, Nvme drives ok. CPU miraculously still works. Brand new psu as well. 700w, maybe the GPU spike killed everything?
 
Neither 2070 Super Black Edition or even a 3070 would have spikes enough to kill any decent 700 watt PSU like that - there are certain models like some Gigabyte ones known for not gracefully shutting down in an over current situation and potentially killing hardware but that would need far more of a sustained spike than you'd normally get from any GPU.
 
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