6750 XT + Rysen 5 7600X required Wattage?

[mclaudiocp]

Hello all,

I don’t have a lot of knowledge on this so I am asking for your support on some questions if you don’t mind...

I have a draft of a new specification as below, suggested by other users on another topic.
One very helpful person there gave me some good inputs regarding general approach for PSU for this new machine and he was comfortable with a 650W PSU however he doesn’t know very well the below model so I decided to come to the right subforum for advice for peace of mind.

1 x AMD Ryzen 5 7600X Six Core 5.30GHz (Socket AM5) Processor - Retail (SKU: CP-3DG-AM) = £248.99
1 x TeamGroup Vulcan 32GB (2X16GB) DDR5 PC5-44800C36 5600MHz Dual Channel Kit - Black (FLBD532G5600HC36BDC01) (SKU: MY-0BB-TG) = £139.99
1 x Asrock B650M PG Riptide (Socket AM5) DDR5 Micro-ATX Motherboard (SKU: MB-18Y-AK) = £179.99
1 x WD Black SN770 1TB SSD M.2 2280 NVME PCI-E Gen4 Solid State Drive (WDS100T3X0E) (SKU: HD-58F-WD) = £69.95
1 x Gigabyte Radeon RX 6750 XT Gaming OC 12GB GDDR6 PCI-Express Graphics Card (SKU GX-1FU-GI) = £449.99
1 x Alpenfohn Dolomit Advanced 120mm ARGB CPU Cooler - Black (SKU: HS-05V-AL) = £35.00
1 x Lian Li Lancool II ARGB Midi-Tower Case - Black with Corsair RM Series RM650 (SKU: BU-00A-LL) = £142.80

Originally this set was suggested for a 6700 XT that has less power consumption, but with some extra money I can buy the higher model.

Lian Li Lancool II ARGB Midi-Tower Case - Black with Corsair RM Series RM650

Order Lian Li Lancool II ARGB Midi-Tower Case - Black with Corsair RM Series RM650 now online and benefit from fast delivery.

www.overclockers.co.uk

Some extra inputs with some simulations that I read some people mentioning on this forum, hope I did it correctly, but adding an old HDD and 1 or 2 extra fans if cooling becomes a problem:

• ************ gave me an Estimate Wattage of 491W.
• bequiet gave me a maximum wattage requirement of 657W, however I couldn’t find the 6750 XT so I choose the 6700XT with OC for simulation, wattage increased 30W, if I go to AMD website the delta between both GPUs are 20W so it should be more or less right. However huge difference compared to ************ so not sure which is right.
• AMD wattage Minimum PSU Recommendation for this GPU is 650W

So my questions are...
Is this 650W PSU appropriate for this system or I should go for 750W? If so which one?
Cost wise I was comfortable with that buddle case + PSU of £142.80 but I don't want to have problems.

Thak you in advance for your help.

 

[mclaudiocp]

I'd be happy running that system on a 650w unless you plan to run some heavy overclocks.

Average gaming the 7600X will pull around 70w and the 6750XT between 200-250w so you'd be looking at around 350-400w average for the full system and another 250w headroom for spikes.

Thank you for the reply Joxeon.

No overclocks intended. Not sure why bequiet gave me all that, and you are correct, AMD mentions 250w on their website.
Just to understand, what happens to the system if a spike occurs and its higher than a PSU wattage?

 

[mclaudiocp]

I'm no expert but PSU are ratings for continuous power but better power supplies will have various methods to handle transient power spikes, shorts, over current protection etc. Plus as you may be using the PSU for up to 10 years it's one component worth over specifying from day one. My Corsair HX850i was more than I needed about 5 years a go but recently it's been perfect for my RTX 3080 and now RTX 4080 which both draw around 270 - 330W plus a i7 12700K CPU at around 200W max with OC.

As for assessing power you could use uk.************.com to play add system parts and use the filters to select overclockers as the supplier. I just assembled my current system and the estimate is 634W and 850W is the recommended minimum from nVidia.

Hi bimbleuk, thank you for your comments, I cant see the PM, can you send me again please?
I did already a simulation on a site that was also blocked the name here, there I "picked" the components just for that purpose of checking the needed wattage, gave me 491w, if its the same of yours perhaps is a problem since it will be only 160w from the maximum of the 650w on this PSU?

 

[mclaudiocp]

PC Part Picker was the site so you may have used this already.

650W PSU is fine for your component choice and I've mostly used Corsair myself without issue. The PSU will have a higher capacity than 650W for the transient power spikes that modern CPU/GPUs can draw for fractions of a second.

Thank you bimbleuk, comfortable now.

 

[mclaudiocp]

If the PSU can't handle it, then it will trip and shut down.



What Joxeon said is correct, the 7600X is usually under 100 when gaming and the 6750 XT around 250. If you don't believe us, look at the reviews yourself, or check out YouTube gameplay comparison videos where they include the power figures. The calculators aren't 100% accurate and they often include some headroom and may assume that you're using both components to their max capacity. Games pretty much never run the CPU to max multi-threaded load (like e.g. Prime 95 would), or run the GPU to max (like e.g. Furmark would).

I'd personally recommend a decent 750 PSU for that system (like the Phanteks AMP), but you should be fine with 650.

Understood Tetras, thank you for the support and explanations on both forum rooms, will now pick my card and do shopping.

 

[mclaudiocp]

Always go for more if you can. PSU's can last over 10 years and in that lifetime you will no doubt upgrade parts as you go, potentially more wattage, so try not to go with a minmium just to get by for now. I always try and plan ahead. AMD stress test and GPU-Z suggests my 6700XT (slightly underclocked) pulls 170W but as @Joxeon says, if you whack the sliders up it'll be over 200W. Hope that helps.

Helps, thank you for the advice.

 

[mclaudiocp]

Thank you both, understood all your points, they make sense.

However I have a bundle opportunity to pay only £142.80 on case + psu, that from all the inputs I received it will work, for me to jump to a higher psu spec I would have pay the 2 components individually.

Lian Li Lancool II ARGB Midi-Tower Case - Black with Corsair RM Series RM650

Order Lian Li Lancool II ARGB Midi-Tower Case - Black with Corsair RM Series RM650 now online and benefit from fast delivery.

www.overclockers.co.uk

Assuming the same case it will cost £90.95.

Lian Li Lancool II ARGB Midi-Tower Case - Black

Order Lian Li Lancool II ARGB Midi-Tower Case - Black now online and benefit from fast delivery.

www.overclockers.co.uk

Assuming same psu brand...

750w: £90.95 + £109.99 = £200.94 (+£58.1)

CORSAIR RM Series RM750 Fully Modular Ultra-Low Noise ATX Power Supply - Wh

Order CORSAIR RM Series RM750 Fully Modular Ultra-Low Noise ATX Power Supply - Wh now online and benefit from fast delivery.

www.overclockers.co.uk

850w: £90.95 + £129.95 = £220.9 ( +£78.1)

CORSAIR RM Series RM850 Fully Modular Ultra-Low Noise ATX Power Supply - White

Order CORSAIR RM Series RM850 Fully Modular Ultra-Low Noise ATX Power Supply - White now online and benefit from fast delivery.

www.overclockers.co.uk

1000w: £90.95 + £159.95 = £250.9 ( +108.1)

Corsair RMx Series RM1000x 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020201-UK)

Order Corsair RMx Series RM1000x 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020201-UK) now online and benefit from fast delivery.

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Also, at the time if I eventually replace the GPU, is 100w enough? is 200w enough? Probably at that time makes more sense to have a £1000w, but for £108 more currently I rather sell this £650W psu and use both moneys to buy a new 1000w psu.

So, does it makes sense to pay and don’t use it on that configuration or to invest on other things, I believe the last one is a more interesting option, like extending the 1TB SSD to 2TB that with games already going over 100Gb is definetly a must.

Thank you

 

[mclaudiocp]

There's no wrong answer - just what works for you. You either bite the bullet now, pay the extra ~£100 and then not worry about the PSU again for x years. Or, you save money now and invest in your 2TB drive (as an example), but always knowing that in x years down the line you'll not just be upgrading CPU/GPU, you'll potentially also have to do the PSU. And undo all the cabling etc again to rip the guts out. Would you rather get it out of the way now, or kick the can down the road and deal with it later. Either way is OK.

FYI that 1000w PSU can be found for £149.99 along with the Lian Li case for £82.78 = £232.77 (+£89.97)

Agree Firegod, have to choose best devil.

Thank you