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Just scored a 6700XT (thanks StockDrops Discord!). Currently have a 5600XT, gaming at 1440p.
My PSU is currently 550W. Do I need to upgrade it for the additional draw from the 6700XT? If so, is 650W enough, or should I go 700-800W?
For reference, below is my parts list of my current PC. Nothing else would change but the GPU (and PSU).
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Should be fine.
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You will probably pull like 300 maybe 350 watts at the wall when gaming. You should be just fine.
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Check out Gamer Nexus's video on power consumption. Believe it was from last summer. Upgrading wouldn't hurt but you should be fine with your current psu imo.
Just found it:
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Does the main harness on that PSU have a PCIe power cable in addition to the modular one? Or is the only pcie power cable the modular one? If it's the latter, you really need a new PSU since you want two dedicated cables running back to the PSU from from card.
But if it's the former, and you've got one in the harness plus the modular one and therefore can make two direct connections to the GPU from the PSU, then you can try it and see how it goes, but if you experience random shutdowns, then you'll know that you need to get a 650W or larger. The issue isn't just the wattage of the card itself it's the peak transient spikes that occur for brief periods of time (milliseconds) which can trigger the protection mechanisms of lower wattage (and most EVGA) PSUs due to the current clamping value being set lower to match the wattage of the PSU (except in EVGA's case it's set too low causing them to clamp too soon and shut down under these transient loads).
But you're right on the border of being able to run it, since the PSU is good, but may not quite be able to handle the transient spikes of the card. Also if you can't run two dedicated power cables, I'd really advise just getting a new PSU, since using a daisy chain power cable to power the card is only going to increase the likelihood of problems.
ID: h3qnnwnAh damn I didn’t even think about the harness, I’ll look, thanks!
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PSU is the one thing where going overboard actually saves you money in the long run.
ID: h3qamb7Not always.
Power supplies are most efficient at around half load. If you oversize or undersize you will be pushing your average load into a less efficient range.
If you look at the 80 plus gold rating, its 87% at 20% load, 90% at 50%, 87% at 100% load. If your load is 300 watts, that's 345 watts @ 87% and 333 watts @ 90%. At 8 hours a day that's an extra 35kwh($4-$20 ish depending where you live). If 3-5 years later you find out you need a bigger power supply $100 saved on power, + savings from not oversizing in the first place would easily pay for a new one then. Except now you have a new one instead of a 3-5 year old one....that you could still use for something else or sell.
Of course if you have to buy twice on the same build, because you undersized.... That will certainly cost you more.
ID: h3q8i4fsecond this, had i bought a 850W Plat PSU when i first bought my old 650W bronze i would have paid 70-80€ more but i wouldn't have had to fork out 200€ for one during mining boom.
ID: h3qbc0fI bought a HX1200 from Corsair a while back, enjoying that quiet operation since.
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Should be fine, if you are scared you could always undervolt your 6700 xt
Pretty sure you can make it run 10-15% more efficient without losing any performance
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Better go bit bigger then you need cos just cos it needs certain target does not mean it cant exceed it, it can still draw more at peek for example, however psu's are effected by shortages, just find a really good one and do not cheap out on it, no need to go all overkill on wattage tho.
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No, it's not fine using it though others here are saying otherwise. You need something bigger.
ID: h3qlxczThose recommendations/"requirements" are just a safe guideline for people that don't know and factoring in low quality PSUs. If you are knowledgeable with hardware this can be ignored and almost always the best choice would be a lower wattage high quality PSU.
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The 6700xt can see spikes up to 321W during stress tests and up to 250w during gaming. So assuming you get spikes up to 275W in your usage. Your 2600 combined with the rest of your system should be around 150W of power during a stress test. That leaves 125W or 77% usage during a stress test, a gaming load should be lower.
The TXM Gold is rated A in the LTT tier list. It should be able to handle the card. If you're really worried, get a 750W power supply as the price difference between 650 and 750 is usually small
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You'll probably be fine, I also have the exact same PSU and I had no issues so far.
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Im running my 6700 XT with 500W bronze for 2 months right now ant its fine. Also before that was running for 1.5 year 5700XT and also was fine.
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Nah you're good.
I have a 6700 XT and overclocked 3800X on a 650 watt PSU.
The 6700XT only pulls like 230 watts max, mine has never gotten over 215 watts on my monitor software.
My CPU pulled 120 watts under load, mobo is around 75 watts and 5 watts for each of my 7 fans.
That's means I'm pulling 455 watts plus RAM and HDDs so call it even 500.
Still got 50 watts of headroom which should be enough.
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I have a 3080 ti and 5600x running on a 600w 80+ bronze PSU. The GPU is overclocked and yet I still haven’t had any problems
引用元:https://www.reddit.com/r/Amd/comments/obtgu2/just_scored_a_6700xt_do_i_need_to_upgrade_my_psu/
You’ll be fine.
You can calculate here: https://outervision.com/b/QeaXxJ