Most powerful card that can run on my 650W PSU without crashing

[emothxughts]

First of all, my full PC specs:

Spoiler

CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor
CPU Cooler: Deepcool GAMMAXX 400 V2 64.5 CFM CPU Cooler
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard
Memory: PNY XLR8 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
Storage: HP EX900 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive
Storage: PNY CS900 1 TB 2.5" Solid State Drive
Video Card: Sapphire PULSE Radeon RX 550 2 GB Video Card
Power Supply: Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply
Operating System: Microsoft Windows 10 Pro Retail - Download 32/64-bit
Wireless Network Adapter: TP-Link TL-WN881ND 802.11a/b/g/n PCIe x1 Wi-Fi Adapter
Monitor: LG 24MP400-B 24.0" 1920 x 1080 75 Hz Monitor
Keyboard: Logitech G413 Carbon Wired Gaming Keyboard
Mouse: Logitech G102 Prodigy Wired Optical Mouse

And yes, I'm running a poor little RX550 card right now because my main RX5600XT card is under repair. Now on to the topic, I'm not really currently shopping for a new graphics card right now.  I'm just curious, what is the most powerful GPU that can be powered by my Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply without crashing due to power spikes, transients, whatever? For this reason, really high end, top of the pops stuff like the RTX4090 or RX7900XTX are right out.

 

For reference, it's a non-modular PSU, and it has two main PCIe cables, each split into two connectors. This is also specifically the 230V-only version of the PSU, which is Tier C in the PSU tierlist.

[filpo]

3 minutes ago, emothxughts said:

First of all, my full PC specs:

  Reveal hidden contents

CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor
CPU Cooler: Deepcool GAMMAXX 400 V2 64.5 CFM CPU Cooler
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard
Memory: PNY XLR8 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
Storage: HP EX900 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive
Storage: PNY CS900 1 TB 2.5" Solid State Drive
Video Card: Sapphire PULSE Radeon RX 550 2 GB Video Card
Power Supply: Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply
Operating System: Microsoft Windows 10 Pro Retail - Download 32/64-bit
Wireless Network Adapter: TP-Link TL-WN881ND 802.11a/b/g/n PCIe x1 Wi-Fi Adapter
Monitor: LG 24MP400-B 24.0" 1920 x 1080 75 Hz Monitor
Keyboard: Logitech G413 Carbon Wired Gaming Keyboard
Mouse: Logitech G102 Prodigy Wired Optical Mouse

And yes, I'm running a poor little RX550 card right now because my main RX5600XT card is under repair. Now on to the topic, I'm not really currently shopping for a new graphics card right now.  I'm just curious, what is the most powerful GPU that can be powered by my Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply without crashing due to power spikes, transients, whatever? For this reason, really high end, top of the pops stuff like the RTX4090 or RX7900XTX are right out.

 

For reference, it's a non-modular PSU, and it has two main PCIe cables, each split into two connectors. This is also specifically the 230V-only version of the PSU, which is Tier C in the PSU tierlist.

a 3070 or a 6800. Also the a770 16 gig will be fine

[filpo]

4 minutes ago, emothxughts said:

First of all, my full PC specs:

  Reveal hidden contents

CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor
CPU Cooler: Deepcool GAMMAXX 400 V2 64.5 CFM CPU Cooler
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard
Memory: PNY XLR8 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
Storage: HP EX900 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive
Storage: PNY CS900 1 TB 2.5" Solid State Drive
Video Card: Sapphire PULSE Radeon RX 550 2 GB Video Card
Power Supply: Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply
Operating System: Microsoft Windows 10 Pro Retail - Download 32/64-bit
Wireless Network Adapter: TP-Link TL-WN881ND 802.11a/b/g/n PCIe x1 Wi-Fi Adapter
Monitor: LG 24MP400-B 24.0" 1920 x 1080 75 Hz Monitor
Keyboard: Logitech G413 Carbon Wired Gaming Keyboard
Mouse: Logitech G102 Prodigy Wired Optical Mouse

And yes, I'm running a poor little RX550 card right now because my main RX5600XT card is under repair. Now on to the topic, I'm not really currently shopping for a new graphics card right now.  I'm just curious, what is the most powerful GPU that can be powered by my Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply without crashing due to power spikes, transients, whatever? For this reason, really high end, top of the pops stuff like the RTX4090 or RX7900XTX are right out.

 

For reference, it's a non-modular PSU, and it has two main PCIe cables, each split into two connectors. This is also specifically the 230V-only version of the PSU, which is Tier C in the PSU tierlist.

if we're talking older cards then a gtx 1080 ti or a top of the line original RDNA card

[Alex Atkin UK]

5 minutes ago, emothxughts said:

First of all, my full PC specs:

  Reveal hidden contents

CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor
CPU Cooler: Deepcool GAMMAXX 400 V2 64.5 CFM CPU Cooler
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard
Memory: PNY XLR8 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
Storage: HP EX900 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive
Storage: PNY CS900 1 TB 2.5" Solid State Drive
Video Card: Sapphire PULSE Radeon RX 550 2 GB Video Card
Power Supply: Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply
Operating System: Microsoft Windows 10 Pro Retail - Download 32/64-bit
Wireless Network Adapter: TP-Link TL-WN881ND 802.11a/b/g/n PCIe x1 Wi-Fi Adapter
Monitor: LG 24MP400-B 24.0" 1920 x 1080 75 Hz Monitor
Keyboard: Logitech G413 Carbon Wired Gaming Keyboard
Mouse: Logitech G102 Prodigy Wired Optical Mouse

And yes, I'm running a poor little RX550 card right now because my main RX5600XT card is under repair. Now on to the topic, I'm not really currently shopping for a new graphics card right now.  I'm just curious, what is the most powerful GPU that can be powered by my Cooler Master MWE Bronze V2 650 W 80+ Bronze Certified ATX Power Supply without crashing due to power spikes, transients, whatever? For this reason, really high end, top of the pops stuff like the RTX4090 or RX7900XTX are right out.

 

For reference, it's a non-modular PSU, and it has two main PCIe cables, each split into two connectors. This is also specifically the 230V-only version of the PSU, which is Tier C in the PSU tierlist.

An RTX 4070 Ti will work on that just fine, frankly a 4080 likely would too.

[filpo]

Just now, Alex Atkin UK said:

frankly a 4080 likely would too.

just about but ye. Don't think thats in their budget tho lol

[Alex Atkin UK]

9 minutes ago, filpo said:

just about but ye. Don't think thats in their budget tho lol

They have no budget, they said they were "just curious".

 

I actually had a 3080 running on a 650W but under really heavy load the transients would cause a shut-down.  If I just ran Folding@Home and nothing else, it actually was fine as that's a constant load, unlike gaming.

I'm actually running a 4070 Ti on my folding box using a Cooler Master Mastercool 650W.  Will be trying Stable Diffusion on it later too.

[filpo]

4 minutes ago, Alex Atkin UK said:

They have no budget

ye sorry mb i just thought cuz of their specs that they wouldn't wanna spend too much

[emothxughts]

18 minutes ago, Alex Atkin UK said:

They have no budget, they said they were "just curious".

 

I actually had a 3080 running on a 650W but under really heavy load the transients would cause a shut-down.  If I just ran Folding@Home and nothing else, it actually was fine as that's a constant load, unlike gaming.

I'm actually running a 4070 Ti on my folding box using a Cooler Master Mastercool 650W.  Will be trying Stable Diffusion on it later too.

Yea, no monetary budget in this thread, only the power budget of my 650w PSU, so feel free to suggest whatever GPU this PSU can handle.

[SorryBella]

18 minutes ago, emothxughts said:

Yea, no monetary budget in this thread, only the power budget of my 650w PSU, so feel free to suggest whatever GPU this PSU can handle.

The 6800XT recommendation is definitely stretching it especially considering that its not the more solidly built MWE Gold, but id recommend it if youre in on a dice roll and a dream. 4070 would be a less risky option with same performance but also comes with poor pricing.

[kitnoman]

Can and will are two different things. For example, even a 3080 will work a 650w psu. However, if paired with cpu with 200-250 max tdp/power draw it might not. So in my opinion, the simplest and best way to "guess" is to count it. For example. What is your cpu highest power draw. Let's day a regular intel i5 13400/r5 5600 or any 65w cpu. now pair that with 3080, which is 350w. While other parts like ram, fans ssd, rgb, let's just we just round it at 50w. So that's 65+350+50=465w total. As my personal rule, the way I choose my psu is that the maximum power draw(465w) should only be around 70-80% or lower of the total wattage a psu is rated for. So that the psu won't work extra hard and hot. As well as to cover if there's any spikes. So 465w is around 72% of the 650w. Of course your pc won't also draw that match power in reality. Probably only on test where both cpu and gpu are working.

But yeah, the idea of this is so that you can estimate  if you already need to upgrade your psu or not if you get a new cpu and/or gpu.

[Alex Atkin UK]

On 4/21/2023 at 11:03 AM, kitnoman said:

Can and will are two different things. For example, even a 3080 will work a 650w psu. However, if paired with cpu with 200-250 max tdp/power draw it might not. So in my opinion, the simplest and best way to "guess" is to count it. For example. What is your cpu highest power draw. Let's day a regular intel i5 13400/r5 5600 or any 65w cpu. now pair that with 3080, which is 350w.

Its not that simple, you basically have to write-off the 3080 because its transient power draw can be 2.5x its rated wattage.

 

Also a 4070 Ti will trounce a 3080 in performance at a lower power consumption and smaller transients.

 

Bottom line, you can't base it on average power consumption, or a 4090 would qualify - my whole system hardly ever pulls over 650w from the wall and that includes a 55" OLED TV, according to my UPS.  But that can't measure transients.